{"id":8409,"date":"2026-10-20T03:10:09","date_gmt":"2026-10-20T03:10:09","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&#038;p=8409"},"modified":"2026-10-20T07:24:32","modified_gmt":"2026-10-20T07:24:32","slug":"t-19a-rotary-tiller-gearbox-ratio-11-84-replacement-for-comer-t-19a-gearbox","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/fr\/produit\/t-19a-rotary-tiller-gearbox-ratio-11-84-replacement-for-comer-t-19a-gearbox\/","title":{"rendered":"R\u00e9ducteur de motoculteur T-19A, rapport 1:1,84, remplacement pour bo\u00eete de vitesses Comer T-19A"},"content":{"rendered":"<p>The T-19A Rotary Tiller Gearbox with a 1:1.84 ratio is a precision-built agricultural power transmission unit engineered as a direct replacement for the Comer T-19A gearbox. Manufactured by CMN Transmission in South Korea, this rotary tiller gearbox transfers rotational power from a tractor’s power take-off (PTO) shaft to the rotating blades of a rotary tiller, commonly known as a rotavator. Through its internal spur gear system, the gearbox adjusts rotational speed and increases output torque during reduction operation, delivering 137 N\u00b7m of maximum torque at up to 20 HP. Constructed with a durable cast iron GG25 housing, hardened alloy steel gears, sealed bearings, and premium oil seals, the T-19A is built to handle the rigors of daily soil cultivation across diverse field conditions.<\/p>\n<p>Ce r\u00e9ducteur pour fraise rotative est compatible avec une large gamme d'applications agricoles, notamment les fraises rotatives multi-rangs, les faucheuses, les \u00e9pandeurs d'engrais et les scies \u00e0 ruban. Que vous pr\u00e9pariez des lits de semence en sol sableux meuble, ameublis des sols argileux compact\u00e9s ou incorporiez les r\u00e9sidus de r\u00e9colte avant les semis, le T-19A garantit une vitesse de rotor constante et une transmission de puissance fiable. Les arbres d'entr\u00e9e et de sortie sont \u00e9quip\u00e9s de raccords standard \u00e0 6 cannelures de 1-3\/8 pouce (Z6), assurant une large compatibilit\u00e9 avec les prises de force et les entra\u00eenements de rotor de fraise existants. Gr\u00e2ce \u00e0 sa conception compacte de 14 kg et \u00e0 son montage simple par boulonnage, l'installation peut \u00eatre r\u00e9alis\u00e9e directement sur le terrain sans outillage sp\u00e9cifique.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8351 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.84.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.84.webp 800w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.84-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour fraise rotative T-19A 1-1,84\" width=\"800\" height=\"800\" \/><\/p>\n<h2>Param\u00e8tres techniques<\/h2>\n<table class=\"alignleft\" style=\"width: 100%;\" contenteditable=\"true\" spellcheck=\"false\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Mod\u00e8le<\/strong><\/td>\n<td style=\"width: 57.3477%;\">Bo\u00eete de vitesses T-19A 1:1,84<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Remplacer la marque<\/strong><\/td>\n<td style=\"width: 57.3477%;\">Arrivant<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>D\u00e9tails du produit<\/strong><\/td>\n<td style=\"width: 57.3477%;\">\n<ul>\n<li class=\"_1f26mj97\">Toutes les bo\u00eetes de vitesses sont livr\u00e9es sans huile.<\/li>\n<li class=\"_1f26mj97\">First oil change after 50-70 operating hours, then after 500-700 operating hours or at least once a year.<\/li>\n<li class=\"_1f26mj97\">Contactez-nous pour obtenir une puissance \u00e0 un r\u00e9gime moteur diff\u00e9rent.<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Domaine d'application<\/strong><\/td>\n<td style=\"width: 57.3477%;\">\n<ul>\n<li class=\"_1f26mj97\">Diverses applications (agricoles)<\/li>\n<li class=\"_1f26mj97\">fraises rotatives \u00e0 plusieurs rangs<\/li>\n<li class=\"_1f26mj97\">Tondeuses<\/li>\n<li class=\"_1f26mj97\">\u00e9pandeurs d'engrais<\/li>\n<li class=\"_1f26mj97\">scies \u00e0 ruban<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Rapport\u00a0<\/strong><\/td>\n<td style=\"width: 57.3477%;\">1:1.84<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Connection 1 Outside Diameter inch and splines<\/strong><\/td>\n<td style=\"width: 57.3477%;\">1.3\/8-6<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Connection 2 Outside Diameter inch and splines<\/strong><\/td>\n<td style=\"width: 57.3477%;\">1.3\/8-6<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Puissance d'entr\u00e9e maximale<\/strong><\/td>\n<td style=\"width: 57.3477%;\">14,7 kW<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Vitesse de rotation d'entr\u00e9e maximale<\/strong><\/td>\n<td style=\"width: 57.3477%;\">540 tr\/min<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Puissance de sortie maximale<\/strong><\/td>\n<td style=\"width: 57.3477%;\">14,7 kW<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Puissance de sortie maximale<\/strong><\/td>\n<td style=\"width: 57.3477%;\">20 CV<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Couple de sortie maximal<\/strong><\/td>\n<td style=\"width: 57.3477%;\">137 N\u00b7m<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Configuration des engrenages en augmentation<\/strong><\/td>\n<td style=\"width: 57.3477%;\">23-24<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>R\u00e9duction de l'agencement des engrenages<\/strong><\/td>\n<td style=\"width: 57.3477%;\">3-4<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Contient de l'huile<\/strong><\/td>\n<td style=\"width: 57.3477%;\">Non<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Capacit\u00e9 d'huile maximale<\/strong><\/td>\n<td style=\"width: 57.3477%;\">0,9 L<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Intervalle de vidange d'huile maximal<\/strong><\/td>\n<td style=\"width: 57.3477%;\">500 h<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Grade de viscosit\u00e9 SAE de l'huile<\/strong><\/td>\n<td style=\"width: 57.3477%;\">80W-90<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Mat\u00e9riau du bo\u00eetier<\/strong><\/td>\n<td style=\"width: 57.3477%;\">Fonte GG25<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 42.4134%; text-align: center;\"><strong>Poids<\/strong><\/td>\n<td style=\"width: 57.3477%;\">14 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Nous avons fait r\u00e9aliser un audit fournisseur et une v\u00e9rification d'entreprise par un tiers, avec le soutien de SGS\/T\u00dcV Rheinland. Cette v\u00e9rification permet aux acheteurs d'examiner l'identit\u00e9 de l'entreprise, ses activit\u00e9s, son profil et ses capacit\u00e9s de production. Des rapports d'inspection sp\u00e9cifiques aux produits, des documents relatifs aux mat\u00e9riaux ou des attestations de conformit\u00e9 peuvent \u00eatre fournis sur demande.<\/p>\n<p><strong>Quantit\u00e9 minimale de commande (MOQ) :<\/strong>\u00a0Param\u00e9trable de mani\u00e8re flexible en fonction du type de produit et de la quantit\u00e9 command\u00e9e.<\/p>\n<p><strong>Exemples :<\/strong>\u00a0Les nouveaux clients peuvent demander de 1 \u00e0 5 \u00e9chantillons dans certaines circonstances.<\/p>\n<p><strong>Commandes mixtes :<\/strong>\u00a0La combinaison de diff\u00e9rents mod\u00e8les est prise en charge ; le montant total de la commande doit atteindre environ $1 500.<\/p>\n<p><strong>Petites commandes :<\/strong>\u00a0Les commandes \u00e0 partir de 1 ou 2 pi\u00e8ces sont accept\u00e9es, mais le prix unitaire sera relativement plus \u00e9lev\u00e9.<\/p>\n<p><strong>D\u00e9lai de mise en \u0153uvre:<\/strong>\u00a010 \u00e0 25 jours ouvrables pour les pi\u00e8ces standard ; 20 \u00e0 45 jours ouvrables pour les composants personnalis\u00e9s ; 45 \u00e0 120 jours ouvrables pour les \u00e9quipements sp\u00e9cifiques \u00e0 un projet.<\/p>\n<p><strong>Conditions commerciales :<\/strong>\u00a0Les conditions EXW, FOB, CIF et DAP sont g\u00e9n\u00e9ralement accept\u00e9es\u00a0; les conditions FCA, CFR, CPT, CIP et DDP peuvent faire l\u2019objet de n\u00e9gociations sp\u00e9cifiques.<\/p>\n<h2>Dimensions de la bo\u00eete de vitesses de la fraise rotative T-19A<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8404 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1981px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1.webp 1981w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1-1280x640.webp 1280w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1-980x490.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1-480x240.webp 480w\" alt=\"Dimensions de la bo\u00eete de vitesses de la fraise rotative T-19A\" width=\"1981\" height=\"991\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8405 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1364px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2.webp 1364w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2-1280x1082.webp 1280w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2-980x828.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2-480x406.webp 480w\" alt=\"Dimensions de la bo\u00eete de vitesses de la fraise rotative T-19A\" width=\"1364\" height=\"1153\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8406 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-3.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1123px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-3.webp 1123w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-3-980x1223.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-3-480x599.webp 480w\" alt=\"Dimensions de la bo\u00eete de vitesses de la fraise rotative T-19A\" width=\"1123\" height=\"1401\" \/><\/p>\n<h2>Principaux avantages de la bo\u00eete de vitesses du cultivateur rotatif T-19A<\/h2>\n<p>1. Couple \u00e9lev\u00e9<br \/>\nOffrant un couple maximal de 137 N\u00b7m \u00e0 20 ch, ce r\u00e9ducteur pour motoculteur est optimis\u00e9 pour le travail du sol sous forte charge. Son rapport de r\u00e9duction de 1:1,84 convertit la vitesse d'entr\u00e9e de la prise de force en une force de rotation accrue au niveau du rotor, permettant ainsi aux lames de travailler l'argile compact\u00e9e, les sols durs et secs, et les sols encombr\u00e9s de racines sans caler. La capacit\u00e9 de couple est calibr\u00e9e pour r\u00e9pondre aux exigences des motoculteurs multi-rangs op\u00e9rant sur diff\u00e9rents types de terrains, des sols sableux meubles aux champs argileux lourds, assurant une rotation constante et productive du rotor quelle que soit la r\u00e9sistance rencontr\u00e9e.<\/p>\n<p>2. Conception d'engrenages haute r\u00e9sistance<br \/>\nLa bo\u00eete de vitesses T-19A est dot\u00e9e d'engrenages en acier alli\u00e9 haute r\u00e9sistance, usin\u00e9s avec pr\u00e9cision et soumis \u00e0 un traitement thermique contr\u00f4l\u00e9 pour une duret\u00e9 de surface et une r\u00e9sistance \u00e0 l'usure optimales. Chaque engrenage est fini par taillage, rasage et rectification afin de garantir des tol\u00e9rances dimensionnelles serr\u00e9es. Ce proc\u00e9d\u00e9 de fabrication en plusieurs \u00e9tapes r\u00e9duit le bruit des engrenages, am\u00e9liore l'efficacit\u00e9 de l'engr\u00e8nement et prolonge consid\u00e9rablement la dur\u00e9e de vie de la bo\u00eete de vitesses de la fraise. Il en r\u00e9sulte une transmission de puissance fluide et constante, m\u00eame apr\u00e8s des milliers d'heures d'utilisation sur le terrain, dans des conditions de sol abrasif.<\/p>\n<p>3. Structure compacte et l\u00e9g\u00e8re<br \/>\nPesant seulement 14 kg, le T-19A adopte une conception modulaire qui lui permet de s'int\u00e9grer dans le m\u00eame espace de montage que l'unit\u00e9 Comer T-19A d'origine. Son format compact le rend compatible avec une large gamme de fraises et de rotoculteurs rotatifs de petite et moyenne taille, sans modification structurelle. Les entraxes de fixation standard et les raccords d'arbre \u00e0 6 cannelures de 1-3\/8 pouce permettent un remplacement direct, ce qui signifie que les techniciens peuvent effectuer le remplacement de la bo\u00eete de vitesses lors des interventions de maintenance planifi\u00e9es, avec des outils manuels de base et un temps d'immobilisation minimal de la machine.<\/p>\n<p>4. Bo\u00eetier en fonte GG25 de qualit\u00e9 industrielle<br \/>\nLe carter de la bo\u00eete de vitesses est moul\u00e9 avec pr\u00e9cision en fonte grise GG25, un mat\u00e9riau choisi pour ses excellentes propri\u00e9t\u00e9s d'amortissement des vibrations, sa haute r\u00e9sistance \u00e0 la compression et sa r\u00e9sistance \u00e0 l'usure. Contrairement aux alliages plus l\u00e9gers, le carter en GG25 absorbe les chocs g\u00e9n\u00e9r\u00e9s lorsque les lames de la fraise rencontrent des pierres, des racines ou des couches de sol compact\u00e9es. Les surfaces de moulage sont usin\u00e9es avec une grande pr\u00e9cision au niveau des logements de paliers et des faces des brides, garantissant un alignement parfait de l'engrenage interne et prolongeant la dur\u00e9e de vie de la bo\u00eete de vitesses agricole, m\u00eame en cas d'impacts r\u00e9p\u00e9t\u00e9s.<\/p>\n<p>5. Syst\u00e8me d'\u00e9tanch\u00e9it\u00e9 avanc\u00e9<br \/>\nChaque point d'entr\u00e9e d'arbre est \u00e9quip\u00e9 de joints d'huile \u00e0 l\u00e8vres multiples et de bagues anti-poussi\u00e8re formant une barri\u00e8re multicouche contre les particules de sol, l'humidit\u00e9 et les d\u00e9bris v\u00e9g\u00e9taux. Le syst\u00e8me d'\u00e9tanch\u00e9it\u00e9 est con\u00e7u pour maintenir la pression d'huile interne et pr\u00e9venir les fuites de lubrifiant lors d'une utilisation prolong\u00e9e. Un bouchon de vidange et un \u00e9vent d\u00e9di\u00e9s sur le carter permettent l'\u00e9galisation de la pression lorsque la bo\u00eete de vitesses chauffe pendant le travail, \u00e9vitant ainsi la d\u00e9faillance des joints. Ce syst\u00e8me d'\u00e9tanch\u00e9it\u00e9 r\u00e9duit consid\u00e9rablement la fr\u00e9quence de maintenance et assure la propret\u00e9 et la lubrification optimale des pi\u00e8ces de la bo\u00eete de vitesses de la fraise rotative tout au long de la saison.<\/p>\n<p>6. Ing\u00e9nierie personnalis\u00e9e<br \/>\nCMN Transmission propose des services de production sur mesure, notamment la modification des rapports de transmission, les configurations d'arbres alternatives et les syst\u00e8mes de montage adapt\u00e9s. Si la conception de votre fraisier ou les conditions de sol de votre r\u00e9gion n\u00e9cessitent une configuration non standard, notre \u00e9quipe d'ing\u00e9nieurs peut adapter les param\u00e8tres du T-19A \u00e0 vos exigences. Ce service est particuli\u00e8rement pr\u00e9cieux pour les fabricants et distributeurs d'\u00e9quipements d'origine (OEM) qui fournissent des fraisiers rotatifs sur des march\u00e9s aux profils de sol, normes de tracteurs ou conceptions d'outils sp\u00e9cifiques. Nous travaillons \u00e0 partir des plans du client, d'\u00e9chantillons de bo\u00eetes de vitesses existants ou de sp\u00e9cifications techniques d\u00e9taill\u00e9es pour fournir des unit\u00e9s parfaitement adapt\u00e9es.<\/p>\n<p>7. Qualit\u00e9 certifi\u00e9e et approvisionnement mondial<br \/>\nChaque unit\u00e9 T-19A est fabriqu\u00e9e selon un syst\u00e8me de gestion de la qualit\u00e9 certifi\u00e9 ISO 9001 et b\u00e9n\u00e9ficie de la certification CE pour le march\u00e9 europ\u00e9en. De l'inspection des mati\u00e8res premi\u00e8res \u00e0 l'assemblage final et aux tests de rodage, chaque \u00e9tape de la production suit des proc\u00e9dures document\u00e9es avec des enregistrements de qualit\u00e9 tra\u00e7ables. CMN Transmission exp\u00e9die dans plus de 60 pays \u00e0 travers le monde et maintient des niveaux de stock constants pour r\u00e9pondre aux commandes ponctuelles et aux accords d'approvisionnement OEM \u00e0 long terme.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8427 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-15.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-15.webp 1000w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-15-980x980.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-15-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour motoculteur\" width=\"1000\" height=\"1000\" \/><\/p>\n<h2>Principe de fonctionnement<\/h2>\n<p>The T-19A rotavator gearbox receives mechanical power from the tractor’s rear PTO shaft, which commonly rotates at 540 RPM in standard agricultural configurations. This input enters the gearbox through a 1-3\/8 inch 6-spline input shaft and engages the internal spur gear set. With a reduction ratio of 1:1.84, the gearbox converts the incoming 540 RPM into approximately 293 RPM at the output shaft. This speed reduction is accompanied by a proportional increase in torque, delivering up to 137 N\u00b7m of rotational force to the tiller rotor. The lower speed and higher torque at the output side gives the tiller blades the mechanical advantage needed to cut into compacted or rocky soil without overwhelming the tractor’s drivetrain.<\/p>\n<p>Log\u00e9 dans un carter en fonte GG25, le r\u00e9ducteur T-19A utilise deux engrenages cylindriques \u00e0 denture droite rectifi\u00e9s avec pr\u00e9cision, agenc\u00e9s selon un nombre de dents sp\u00e9cifique. La configuration multiplicatrice utilise un engrenage 23-24, tandis que la configuration d\u00e9ductrice emploie un engrenage 3-4. Lorsque le pignon d'entr\u00e9e (\u00e0 moins de dents) entra\u00eene le pignon de sortie (\u00e0 plus grande denture), la vitesse diminue et le couple se multiplie selon le rapport de transmission. Les dents sont c\u00e9ment\u00e9es pour r\u00e9sister \u00e0 la corrosion par piq\u00fbres et \u00e0 l'\u00e9caillage sous fortes contraintes, et leurs profils sont rectifi\u00e9s pour garantir des tol\u00e9rances d'engr\u00e8nement tr\u00e8s serr\u00e9es. Cette fabrication soign\u00e9e assure une transmission de puissance efficace, avec des pertes d'\u00e9nergie minimales sous forme de chaleur ou de vibrations, maintenant ainsi un rendement de transmission global largement sup\u00e9rieur \u00e0 95 % en conditions normales d'utilisation.<\/p>\n<p>L'arbre de sortie du r\u00e9ducteur du cultivateur rotatif est reli\u00e9 \u00e0 l'entra\u00eenement du rotor de la fraise par un accouplement \u00e0 six cannelures de 1-3\/8 pouce. La rotation de l'arbre de sortie entra\u00eene le rotor horizontal et ses fraises en forme de L ou de C qui p\u00e9n\u00e8trent dans le sol. La vitesse de rotation constante, assur\u00e9e par la r\u00e9duction de vitesse, garantit une profondeur de travail du sol uniforme et une qualit\u00e9 de m\u00e9lange optimale, m\u00eame sur des terrains plus durs ou pr\u00e9sentant des variations d'humidit\u00e9. Cette vitesse de rotation constante est essentielle pour obtenir un lit de semences homog\u00e8ne et une incorporation compl\u00e8te de la mati\u00e8re organique, des r\u00e9sidus de culture et des engrais.<\/p>\n<p>Le carter robuste en fonte GG25 sert \u00e0 la fois de structure et de barri\u00e8re contre les intemp\u00e9ries. Ses parois \u00e9paisses absorbent les vibrations et les chocs transmis par la transmission lors du labour, \u00e9vitant ainsi le desserrage des composants internes et la fatigue des fixations. Les surfaces du carter sont trait\u00e9es avec des rev\u00eatements anticorrosion pour r\u00e9sister \u00e0 une exposition prolong\u00e9e \u00e0 l'humidit\u00e9 du sol, aux engrais et aux variations de temp\u00e9rature entre les d\u00e9marrages \u00e0 froid et les pics de fonctionnement. Des joints efficaces \u00e0 chaque ouverture d'arbre et joint du carter emp\u00eachent les particules de sol, le sable et l'humidit\u00e9 de p\u00e9n\u00e9trer dans le bain d'huile, prot\u00e9geant ainsi les engrenages et les roulements de l'abrasion. Un \u00e9vent permet \u00e0 la pression d'air interne de s'\u00e9quilibrer lors de la mont\u00e9e en temp\u00e9rature de la bo\u00eete de vitesses, \u00e9vitant ainsi une surpression qui pourrait entra\u00eener des fuites d'huile au niveau des joints.<\/p>\n<p>Dans de nombreuses installations de fraises rotatives, la transmission entre la prise de force et la bo\u00eete de vitesses comprend un dispositif de protection contre les surcharges, tel qu'un accouplement \u00e0 boulon de cisaillement, un embrayage \u00e0 friction ou un limiteur de couple. Ces m\u00e9canismes de s\u00e9curit\u00e9 sont con\u00e7us pour interrompre la transmission de puissance si le rotor se bloque soudainement contre une grosse pierre, une souche enfouie ou un objet immobile. En absorbant ou en rel\u00e2chant le choc avant qu'il n'atteigne les composants internes de la bo\u00eete de vitesses, ces dispositifs prot\u00e8gent les engrenages, les arbres, les roulements et le carter contre une d\u00e9faillance catastrophique. Lors du choix ou du remplacement d'une bo\u00eete de vitesses T-19A, il est recommand\u00e9 de v\u00e9rifier que l'arbre de prise de force est \u00e9quip\u00e9 d'un dispositif de protection contre les surcharges adapt\u00e9 \u00e0 la puissance de 20 ch et au couple de 137 N\u00b7m de la bo\u00eete de vitesses.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8419 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-7.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1200px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-7.webp 1200w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-7-980x735.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-7-480x360.webp 480w\" alt=\"Bo\u00eete de vitesses pour motoculteur\" width=\"1200\" height=\"900\" \/><\/p>\n<h2>Applications de la bo\u00eete de vitesses de la fraise rotative T-19A<\/h2>\n<div>\n<h3>Pr\u00e9paration du lit de semences et culture primaire<\/h3>\n<p>La fonction principale du r\u00e9ducteur d'une fraise rotative est d'entra\u00eener les lames qui m\u00e9langent et pulv\u00e9risent le sol afin de cr\u00e9er un lit de semences fin et homog\u00e8ne. Le r\u00e9ducteur T-19A fournit un couple constant au rotor qui brise les mottes, nivelle la surface et cr\u00e9e la structure granuleuse n\u00e9cessaire \u00e0 un bon contact entre les semences et le sol. Cette application est essentielle en c\u00e9r\u00e9alerie, en mara\u00eechage et en p\u00e9pini\u00e8re, o\u00f9 des taux de germination r\u00e9guliers d\u00e9pendent de la bonne pr\u00e9paration du sol.<\/p>\n<\/div>\n<div>\n<h3>Incorporation et compostage des r\u00e9sidus de r\u00e9colte<\/h3>\n<p>Apr\u00e8s la r\u00e9colte, les fraises rotatives, entra\u00een\u00e9es par des r\u00e9ducteurs comme le T-19A, servent \u00e0 broyer et \u00e0 incorporer les chaumes, la paille et les r\u00e9sidus v\u00e9g\u00e9taux \u00e0 la couche arable. Ce proc\u00e9d\u00e9 acc\u00e9l\u00e8re la d\u00e9composition en m\u00e9langeant la mati\u00e8re organique aux micro-organismes du sol et \u00e0 l'oxyg\u00e8ne. Le r\u00e9ducteur agricole de la fraise rotative maintient une vitesse de rotation constante, assurant ainsi un m\u00e9lange homog\u00e8ne du compost, des engrais verts ou des fertilisants sur toute la profondeur de travail. Ce proc\u00e9d\u00e9 favorise le recyclage des nutriments et am\u00e9liore la sant\u00e9 du sol avant le prochain cycle de plantation.<\/p>\n<\/div>\n<div>\n<h3>Nivellement l\u00e9ger et finition de surface<\/h3>\n<p>Sur les petites parcelles, les potagers et les vergers, la fraise rotative sert \u00e9galement d'outil de nivellement. Ses lames rotatives aplanissent les orni\u00e8res, comblent les creux et cr\u00e9ent une surface uniforme qui am\u00e9liore la r\u00e9partition de l'irrigation et r\u00e9duit la formation de flaques. Le r\u00e9ducteur de la fraise rotative T-19A maintient une vitesse de rotation constante lors des passages de finition, un facteur essentiel pour obtenir la texture de sol pr\u00e9cise et homog\u00e8ne requise pour les cultures \u00e0 haute valeur ajout\u00e9e et les syst\u00e8mes de culture sur\u00e9lev\u00e9s.<\/p>\n<\/div>\n<div>\n<h3>Gestion des vignes et des vergers<\/h3>\n<p>Les fraises rotatives compactes \u00e9quip\u00e9es du r\u00e9ducteur T-19A sont largement utilis\u00e9es entre les rangs de vigne et sous le couvert des arbres fruitiers, l\u00e0 o\u00f9 l'espace est restreint et o\u00f9 un travail pr\u00e9cis est indispensable. Le r\u00e9ducteur actionne les lames de la fraise pour ma\u00eetriser la pousse des adventices, incorporer les r\u00e9sidus de cultures de couverture et ameublir la surface du sol afin d'am\u00e9liorer l'infiltration de l'eau autour des racines. Son poids r\u00e9duit de 14 kg et ses raccords cannel\u00e9s standard la rendent id\u00e9ale pour les fraises sp\u00e9cialis\u00e9es de petite taille intervenant dans ces environnements de production exigus et exigeants.<\/p>\n<\/div>\n<div>\n<h3>Am\u00e9nagement de plates-bandes potag\u00e8res et travaux de mara\u00eechage<\/h3>\n<p>Les mara\u00eechers et les producteurs de l\u00e9gumes utilisent des motoculteurs pour cr\u00e9er des planches sur\u00e9lev\u00e9es, incorporer des amendements et pr\u00e9parer des sillons de plantation \u00e0 grain fin. Le T-19A offre la vitesse de lame et le contr\u00f4le du couple constants requis pour ces op\u00e9rations, garantissant ainsi une intensit\u00e9 de travail uniforme sur chaque planche. Que le producteur travaille un sol sableux l\u00e9ger ou un sol alluvial lourd, le r\u00e9ducteur agricole du motoculteur assure un fonctionnement constant du rotor, ce qui influe directement sur l'homog\u00e9n\u00e9it\u00e9 des cultures et la pr\u00e9visibilit\u00e9 des rendements sur l'ensemble de la surface cultiv\u00e9e.<\/p>\n<\/div>\n<div>\n<h3>R\u00e9novation des p\u00e2turages et gestion des prairies<\/h3>\n<p>Livestock farms use rotary tillers to renovate degraded pastures by breaking up the existing sod, incorporating seed, and mixing in lime or fertilizer. The T-19A gearbox handles the heavy loads that come from cutting through established grass root mats and compacted grazing surfaces. This renovation process restores productive grass stands without full reseeding, saving time and input costs. The gearbox’s reliable torque output ensures that the tiller can process even heavily matted pasture sections without requiring multiple passes.<\/p>\n<\/div>\n<div>\n<h3>Pr\u00e9paration des accotements et des sols pour les chantiers de construction<\/h3>\n<p>Outre l'agriculture traditionnelle, les fraises rotatives \u00e9quip\u00e9es du T-19A sont utilis\u00e9es pour la pr\u00e9paration des sols en bordure de route, sur les talus et les chantiers, o\u00f9 le terrain doit \u00eatre ameubli et nivel\u00e9 avant les semis ou le rev\u00eatement. La bo\u00eete de vitesses r\u00e9siste aux conditions abrasives de ces environnements non agricoles, o\u00f9 le sol peut contenir du gravier, des d\u00e9bris de construction et des mat\u00e9riaux de remblai compact\u00e9s. Son carter robuste en fonte et son engrenage tremp\u00e9 supportent ces conditions difficiles sans l'usure rapide que subiraient les bo\u00eetes de vitesses plus l\u00e9g\u00e8res.<\/p>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8413 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-1.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1200px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-1.webp 1200w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-1-980x735.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-1-480x360.webp 480w\" alt=\"Bo\u00eete de vitesses pour motoculteur\" width=\"1200\" height=\"900\" \/><\/p>\n<h2>Comment choisir la bo\u00eete de vitesses agricole adapt\u00e9e \u00e0 une fraise rotative ?<\/h2>\n<p>1. Commencez par consulter les sp\u00e9cifications de votre tracteur et de votre fraise.<br \/>\nAvant de choisir une bo\u00eete de vitesses pour votre fraise rotative, rassemblez les param\u00e8tres de fonctionnement cl\u00e9s\u00a0: puissance du tracteur, puissance et vitesse de la prise de force, largeur de travail de la fraise, vitesse de rotation requise, profondeur de travail, conditions du sol, sp\u00e9cifications des arbres d'entr\u00e9e et de sortie, position de montage, ainsi que les r\u00e9f\u00e9rences ou sch\u00e9mas techniques des bo\u00eetes de vitesses existantes. Ces param\u00e8tres d\u00e9finissent les exigences de vitesse, de couple et d'installation auxquelles votre nouvelle bo\u00eete de vitesses devra r\u00e9pondre. Notez que deux tracteurs de puissance similaire peuvent n\u00e9cessiter des configurations de bo\u00eete de vitesses diff\u00e9rentes, car la largeur de travail, la disposition des lames, la vitesse de rotation et la r\u00e9sistance du sol peuvent varier consid\u00e9rablement d'une op\u00e9ration \u00e0 l'autre.<\/p>\n<p>2. Adaptez la bo\u00eete de vitesses \u00e0 la puissance du tracteur.<br \/>\nLa puissance du tracteur est un point de rep\u00e8re important, mais la bo\u00eete de vitesses doit \u00eatre adapt\u00e9e \u00e0 la puissance r\u00e9elle transmise par la prise de force et \u00e0 la charge g\u00e9n\u00e9r\u00e9e par la fraise en conditions de travail. Une bo\u00eete de vitesses agricole sous-dimensionn\u00e9e peut entra\u00eener une surchauffe, une usure acc\u00e9l\u00e9r\u00e9e des roulements, une d\u00e9t\u00e9rioration des dents d'engrenage ou une dur\u00e9e de vie r\u00e9duite. \u00c0 l'inverse, une bo\u00eete de vitesses inutilement surdimensionn\u00e9e peut alourdir l'ensemble, augmenter son co\u00fbt et poser des probl\u00e8mes d'installation. Pour toute demande de recommandation de bo\u00eete de vitesses, il est essentiel de fournir des informations compl\u00e8tes, notamment la puissance du tracteur, les sp\u00e9cifications de la prise de force, la largeur de la fraise et les conditions d'utilisation habituelles, plut\u00f4t que de se fier uniquement \u00e0 la puissance.<\/p>\n<p>3. V\u00e9rifier la vitesse de la prise de force<br \/>\nLa vitesse de la prise de force (PDF) est l'une des sp\u00e9cifications les plus importantes lors du choix d'une bo\u00eete de vitesses pour fraise rotative. La plupart des outils agricoles fonctionnent avec une PDF standard de 540 ou 1\u00a0000 tr\/min, et la bo\u00eete de vitesses convertit cette vitesse en la vitesse de rotation requise par le rotor de la fraise. Avant de passer commande, v\u00e9rifiez la vitesse d'entr\u00e9e de la PDF de votre tracteur, la vitesse d'entr\u00e9e nominale de la bo\u00eete de vitesses, la vitesse de rotation requise au niveau du rotor et le sens de rotation. Deux bo\u00eetes de vitesses aux dimensions externes et \u00e0 l'entraxe de fixation identiques peuvent produire des vitesses de rotation tr\u00e8s diff\u00e9rentes si leurs rapports de transmission internes diff\u00e8rent\u00a0; cette v\u00e9rification est donc essentielle.<\/p>\n<p>4. S\u00e9lectionnez le rapport de transmission appropri\u00e9<br \/>\nThe rotary tiller gearbox ratio determines the relationship between input and output speed (Gear Ratio = Input Speed \/ Output Speed). However, the ideal ratio depends on more than just speed conversion. Rotor diameter, blade configuration, tilling depth, soil resistance, tractor power, and forward travel speed all influence which ratio produces the best cultivation result. A higher rotor speed is not always better: hard soil and deep tillage increase load substantially, so speed and torque should be evaluated together. The T-19A’s 1:1.84 ratio provides a balanced combination suitable for typical multi-row tiller applications up to 20 HP.<\/p>\n<p>5. Tenir compte de la largeur de travail de la fraise<br \/>\nLa largeur de la fraise influe directement sur la charge de transmission exerc\u00e9e sur la bo\u00eete de vitesses. Une fraise \u00e9troite utilis\u00e9e avec un tracteur compact g\u00e9n\u00e8re g\u00e9n\u00e9ralement une charge moindre sur la transmission qu'un outil plus large fonctionnant \u00e0 la m\u00eame vitesse de prise de force et \u00e0 la m\u00eame profondeur de travail. Plus la largeur de travail augmente, plus le nombre de lames en contact simultan\u00e9 avec le sol est \u00e9lev\u00e9, ce qui accro\u00eet la demande de couple et la chaleur g\u00e9n\u00e9r\u00e9e dans la bo\u00eete de vitesses. Il est donc recommand\u00e9 de sp\u00e9cifier la bo\u00eete de vitesses, le rotor, les arbres et la prise de force comme un syst\u00e8me de transmission complet plut\u00f4t que de les choisir s\u00e9par\u00e9ment. Lors de toute demande de devis ou de recommandation de remplacement, il est imp\u00e9ratif de toujours indiquer la largeur de travail r\u00e9elle de la fraise \u00e0 vos fournisseurs de bo\u00eetes de vitesses pour fraises rotatives.<\/p>\n<p>6. Adapter la bo\u00eete de vitesses aux conditions du sol<br \/>\nLe type de sol peut modifier consid\u00e9rablement la charge sur la bo\u00eete de vitesses. Un sol l\u00e9ger ou d\u00e9j\u00e0 cultiv\u00e9 offre une r\u00e9sistance mod\u00e9r\u00e9e et stable, tandis qu'un sol argileux ou compact augmente la r\u00e9sistance des lames et exige un couple plus important de la bo\u00eete de vitesses. Un sol sec et dur peut g\u00e9n\u00e9rer des chocs r\u00e9p\u00e9t\u00e9s lors de l'entr\u00e9e et de la sortie des lames, ce qui sollicite fortement les engrenages, les arbres, les roulements et la structure du carter. Si le m\u00eame mod\u00e8le de motoculteur est destin\u00e9 \u00e0 \u00eatre utilis\u00e9 dans diff\u00e9rentes r\u00e9gions ou commercialis\u00e9 sur plusieurs march\u00e9s, le choix de la bo\u00eete de vitesses doit tenir compte des conditions de sol les plus exigeantes que l'\u00e9quipement rencontrera au cours de sa dur\u00e9e de vie.<\/p>\n<p>7. V\u00e9rifier la compatibilit\u00e9 de l'arbre et de la cannelure<br \/>\nM\u00eame si la puissance et le rapport de transmission sont correctement adapt\u00e9s, une bo\u00eete de vitesses ne peut \u00eatre install\u00e9e si la configuration de l'arbre ne permet pas une connexion physique avec la prise de force du tracteur et l'entra\u00eenement du rotor de la fraise. Avant de commander, v\u00e9rifiez le diam\u00e8tre de l'arbre d'entr\u00e9e, le diam\u00e8tre de l'arbre de sortie, le type et le nombre de cannelures, les dimensions des rainures de clavette, la longueur, l'orientation et le sens de rotation de l'arbre. Pour les projets OEM et de remplacement, fournir des sch\u00e9mas techniques, des \u00e9chantillons de bo\u00eetes de vitesses existantes ou des mesures dimensionnelles pr\u00e9cises am\u00e9liore consid\u00e9rablement la pr\u00e9cision de la compatibilit\u00e9 et \u00e9vite les retours co\u00fbteux dus \u00e0 des probl\u00e8mes d'ajustement.<\/p>\n<p>8. V\u00e9rifier les dimensions de montage et le d\u00e9gagement<br \/>\nLes r\u00e9ducteurs de motoculteurs de petite et moyenne taille s'adaptent souvent aux espaces restreints du ch\u00e2ssis. Avant de commander, v\u00e9rifiez l'entraxe des trous de fixation, l'entraxe des boulons, les dimensions ext\u00e9rieures du carter, la position relative des arbres d'entr\u00e9e et de sortie, le sens de montage (horizontal, vertical ou inclin\u00e9) et le d\u00e9gagement disponible autour du r\u00e9ducteur pour le d\u00e9battement de l'arbre de prise de force, les protections de cha\u00eene et les protections de lames. Un r\u00e9ducteur avec le rapport et la puissance appropri\u00e9s peut s'av\u00e9rer inadapt\u00e9 si son encombrement ne correspond pas \u00e0 la structure du ch\u00e2ssis. Les dimensions du T-19A sont indiqu\u00e9es sur les sch\u00e9mas ci-dessus pour une comparaison directe avec votre installation actuelle.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8428 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-16.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-16.webp 1000w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-16-980x980.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-16-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour motoculteur\" width=\"1000\" height=\"1000\" \/><\/p>\n<h2>D\u00e9pannage courant<\/h2>\n<p><strong>Fuite d'huile<\/strong><br \/>\nLa pr\u00e9sence de lubrifiant visible autour des arbres, des joints, des raccords du carter ou des bouchons de vidange indique g\u00e9n\u00e9ralement des joints d'huile us\u00e9s, des bouchons desserr\u00e9s, des surfaces d'\u00e9tanch\u00e9it\u00e9 endommag\u00e9es ou des microfissures dans le carter. Si le niveau d'huile baisse sensiblement entre deux contr\u00f4les, n'utilisez pas la bo\u00eete de vitesses pendant une p\u00e9riode prolong\u00e9e tant que la source de la fuite n'a pas \u00e9t\u00e9 identifi\u00e9e et r\u00e9par\u00e9e. Un niveau d'huile insuffisant entra\u00eenera une usure rapide des engrenages et des roulements. Remplacez tout joint pr\u00e9sentant des signes de durcissement, de fissure ou de d\u00e9formation, et inspectez les surfaces des arbres afin de d\u00e9tecter d'\u00e9ventuelles rayures qui pourraient emp\u00eacher la bonne mise en place d'un nouveau joint.<\/p>\n<p><strong>bruit de grincement ou de cliquetis<\/strong><br \/>\nTout bruit m\u00e9canique inhabituel ou nouveau provenant de la bo\u00eete de vitesses de la motobineuse pendant son fonctionnement peut indiquer une lubrification insuffisante, une usure des roulements, des dents d'engrenage endommag\u00e9es ou un mauvais engr\u00e8nement. Un grincement signale souvent un contact m\u00e9tal sur m\u00e9tal d\u00fb \u00e0 un niveau d'huile bas ou \u00e0 un lubrifiant d\u00e9grad\u00e9 ayant perdu sa viscosit\u00e9. Un cliquetis peut indiquer des composants internes desserr\u00e9s ou un jeu excessif des roulements. Si le bruit devient important ou s'accompagne de vibrations, arr\u00eatez imm\u00e9diatement la machine et inspectez les composants internes de la bo\u00eete de vitesses avant de la remettre en marche afin d'\u00e9viter d'autres dommages.<\/p>\n<p><strong>Vibrations excessives<\/strong><br \/>\nDes vibrations soudaines ou d'intensit\u00e9 croissante pendant le labour peuvent avoir plusieurs origines\u00a0: boulons de fixation de la bo\u00eete de vitesses desserr\u00e9s, roulements us\u00e9s ou d\u00e9fectueux, arbres d'entr\u00e9e ou de sortie tordus, probl\u00e8mes de joint de cardan de l'arbre de prise de force, d\u00e9s\u00e9quilibre du rotor d\u00fb \u00e0 des lames manquantes ou endommag\u00e9es, ou d\u00e9faut d'alignement entre la bo\u00eete de vitesses et le ch\u00e2ssis de la fraise. Puisque les vibrations peuvent provenir de n'importe quel point de la transmission, il est important d'inspecter l'ensemble du circuit de puissance, depuis la prise de force du tracteur jusqu'au rotor, en passant par l'arbre de transmission et la bo\u00eete de vitesses, plut\u00f4t que de supposer que la bo\u00eete de vitesses est la seule responsable.<\/p>\n<p><strong>Performances de labour r\u00e9duites<\/strong><br \/>\nUne faible performance du rotor ou une r\u00e9duction notable de la profondeur de travail du sol ou de la qualit\u00e9 du m\u00e9lange peuvent \u00eatre dues \u00e0 plusieurs facteurs\u00a0: un r\u00e9glage incorrect de la vitesse de la prise de force du tracteur, une r\u00e9sistance excessive du sol li\u00e9e \u00e0 une s\u00e9cheresse ou un compactage extr\u00eame, des lames de fraise fortement us\u00e9es, des probl\u00e8mes d'arbre de prise de force r\u00e9duisant la puissance d\u00e9livr\u00e9e, une usure interne de la bo\u00eete de vitesses entra\u00eenant une perte de puissance, ou des composants de la transmission endommag\u00e9s qui patinent sous charge. Avant tout d\u00e9montage, comparez ce sympt\u00f4me avec toute modification du bruit de fonctionnement, des vibrations, de la temp\u00e9rature de la bo\u00eete de vitesses et du mouvement de l'arbre afin de d\u00e9terminer la cause probable.<\/p>\n<p><strong>Le rotor ne tourne pas.<\/strong><br \/>\nSi la prise de force du tracteur fonctionne mais que le rotor de la fraise ne tourne pas ou tourne par intermittence, arr\u00eatez imm\u00e9diatement la machine. Les causes possibles incluent des dents d'engrenage us\u00e9es ou cass\u00e9es \u00e0 l'int\u00e9rieur de la bo\u00eete de vitesses, un arbre d'entr\u00e9e ou de sortie cisaill\u00e9, des cannelures endommag\u00e9es, des clavettes d'accouplement d\u00e9fectueuses, des cha\u00eenes ou pignons de transmission cass\u00e9s (sur les fraises \u00e0 cha\u00eene), ou un dispositif de protection contre les surcharges d\u00e9clench\u00e9 (boulon de cisaillement ou embrayage \u00e0 friction). Avant d'ouvrir le carter de bo\u00eete de vitesses pour une inspection interne, v\u00e9rifiez d'abord la connexion de l'arbre de prise de force \u00e0 l'entr\u00e9e de la bo\u00eete de vitesses, puis la connexion de la sortie de la bo\u00eete de vitesses \u00e0 l'entra\u00eenement du rotor.<\/p>\n<p><strong>Temp\u00e9rature de fonctionnement anormale<\/strong><br \/>\nToutes les bo\u00eetes de vitesses g\u00e9n\u00e8rent de la chaleur en fonctionnement, un ph\u00e9nom\u00e8ne naturel d\u00fb au frottement des engrenages et au cisaillement de l'huile. Cependant, une augmentation significative de la temp\u00e9rature par rapport aux conditions normales de fonctionnement peut indiquer un niveau de lubrifiant insuffisant, l'utilisation d'une huile de viscosit\u00e9 inadapt\u00e9e, des probl\u00e8mes de roulements ou de pr\u00e9charge, un d\u00e9faut d'alignement des arbres ou des engrenages, une charge excessive ou une augmentation du frottement interne due \u00e0 l'usure des composants. Il est donc pr\u00e9f\u00e9rable de comparer la temp\u00e9rature de fonctionnement dans des conditions constantes plut\u00f4t que de se fier \u00e0 une seule mesure de temp\u00e9rature absolue, car les conditions ambiantes et l'intensit\u00e9 de la charge influent sur la g\u00e9n\u00e9ration de chaleur.<\/p>\n<p><strong>Contamination ou d\u00e9coloration par l'huile<\/strong><br \/>\nLors des vidanges d'huile moteur, inspectez l'huile vidang\u00e9e afin de d\u00e9tecter tout signe de contamination. La pr\u00e9sence de particules m\u00e9talliques ou d'une huile gris\u00e2tre et laiteuse indique une usure des composants internes ou une infiltration d'eau par des joints d\u00e9fectueux. Une huile fonc\u00e9e et \u00e9paisse sugg\u00e8re une surchauffe ou des intervalles de vidange trop longs. La pr\u00e9sence de fines particules de salet\u00e9 dans l'huile indique un joint endommag\u00e9 ou une fissure du carter. Dans tous les cas, rincez le carter de bo\u00eete de vitesses avant de le remplir d'huile neuve SAE 80W-90 et recherchez la cause du probl\u00e8me. Un contr\u00f4le r\u00e9gulier de l'\u00e9tat de l'huile est l'un des moyens les plus efficaces de d\u00e9tecter les probl\u00e8mes naissants. <a href=\"https:\/\/korea-transmission.com\/fr\/rotary-tiller-gearbox\/\"><strong>bo\u00eete de vitesses pour fraise rotative<\/strong> <\/a>R\u00e9soudre les probl\u00e8mes avant qu'ils n'entra\u00eenent un \u00e9chec total.<\/p>\n<p><strong>Jeu de l'arbre ou mouvement de l'extr\u00e9mit\u00e9<\/strong><br \/>\nSi vous constatez un jeu axial (d'une extr\u00e9mit\u00e9 \u00e0 l'autre) ou radial (lat\u00e9ral) au niveau de l'arbre d'entr\u00e9e ou de sortie lorsque la machine est arr\u00eat\u00e9e, les roulements supportant cet arbre sont peut-\u00eatre us\u00e9s, mal pr\u00e9charg\u00e9s ou endommag\u00e9s. Un jeu excessif de l'arbre entra\u00eene un d\u00e9sengr\u00e8nement des engrenages, ce qui augmente le bruit, r\u00e9duit le rendement, acc\u00e9l\u00e8re l'usure des dents et peut, \u00e0 terme, provoquer leur rupture. Remplacez rapidement les roulements et assurez-vous que les nouveaux roulements sont correctement pr\u00e9charg\u00e9s conform\u00e9ment aux sp\u00e9cifications de montage de la bo\u00eete de vitesses.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8431 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-19.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-19.webp 1000w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-19-980x980.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-19-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour motoculteur\" width=\"1000\" height=\"1000\" \/><\/p>\n<h2>Bo\u00eete de vitesses pour fraise rotative vs. bo\u00eete de vitesses pour \u00e9pandeur d'engrais<\/h2>\n<div>\n<div>\n<h3>Qu'est-ce qu'une bo\u00eete de vitesses pour motoculteur ?<\/h3>\n<p>A rotary tiller gearbox, also called a rotary cultivator gearbox, is a critical component in soil cultivation equipment. It transmits mechanical power from the tractor’s PTO shaft to the tiller’s horizontal rotor and blade assembly, converting rotational speed into the torque needed to break up, mix, and refine soil. These gearboxes are built with heavy-duty housings, hardened gears, and robust seals to survive the constant impact, vibration, and abrasive conditions encountered during ground-engaging work.<\/p>\n<h4>Avantages des bo\u00eetes de vitesses pour fraises rotatives<\/h4>\n<ul>\n<li>Con\u00e7u pour r\u00e9sister aux chocs importants et aux charges en contact avec le sol, avec des bo\u00eetiers robustes en fonte ou en acier alli\u00e9 qui absorbent les chocs des roches, des racines et des couches de sol compact\u00e9es lors des op\u00e9rations de culture continues.<\/li>\n<li>Les rapports de r\u00e9duction (tels que 1:1,84) convertissent la vitesse de la prise de force en un couple de sortie \u00e9lev\u00e9, donnant aux lames de la fraise la force n\u00e9cessaire pour couper l'argile lourde, la cro\u00fbte s\u00e8che et les syst\u00e8mes de racines enchev\u00eatr\u00e9s sans caler.<\/li>\n<li>Les syst\u00e8mes de roulements \u00e9tanches et de joints d'huile sont sp\u00e9cialement con\u00e7us pour emp\u00eacher l'infiltration des fines particules de sol et de l'humidit\u00e9, ce qui est essentiel pour les \u00e9quipements fonctionnant partiellement enterr\u00e9s dans le sol lors d'une utilisation normale.<\/li>\n<li>Disponible en plusieurs configurations de rapports de bo\u00eete de vitesses et de tailles d'arbre pour fraises rotatives afin de s'adapter \u00e0 une large gamme de classes de puissance de tracteurs, de largeurs de fraises et de conditions de sol r\u00e9gionales dans le monde entier.<\/li>\n<\/ul>\n<h4>Applications des bo\u00eetes de vitesses pour motoculteurs<\/h4>\n<ul>\n<li>Pr\u00e9paration des lits de semences pour les cultures c\u00e9r\u00e9ali\u00e8res, les l\u00e9gumes et les plants de p\u00e9pini\u00e8re sur tous types de sols, du limon sableux \u00e0 l'argile lourde, en terrain plat ou en pente.<\/li>\n<li>Incorporer les r\u00e9sidus de r\u00e9colte, le compost, la chaux et les engrais de pr\u00e9-plantation \u00e0 la couche arable afin d'am\u00e9liorer la structure du sol et la r\u00e9partition des nutriments avant la plantation.<\/li>\n<li>Gestion des sols des vignobles, vergers et potagers o\u00f9 les motoculteurs compacts doivent travailler dans des espaces entre les rangs r\u00e9duits avec pr\u00e9cision et une profondeur de perturbation du sol constante.<\/li>\n<li>R\u00e9novation des p\u00e2turages, remise en \u00e9tat des terres et pr\u00e9paration des sols sur les chantiers de construction o\u00f9 la fraise doit traiter des mat\u00e9riaux de sol compact\u00e9s, rocailleux ou charg\u00e9s de d\u00e9bris.<\/li>\n<\/ul>\n<\/div>\n<div>\n<h3>Qu'est-ce qu'une bo\u00eete de vitesses pour \u00e9pandeur d'engrais\u00a0?<\/h3>\n<p>Le r\u00e9ducteur d'\u00e9pandeur d'engrais, \u00e9galement appel\u00e9 r\u00e9ducteur de distribution d'engrais, est un composant essentiel des machines d'\u00e9pandage qui r\u00e9partissent uniform\u00e9ment les engrais granulaires ou en poudre sur un champ. Plac\u00e9 au centre de la machine, il transmet la force de la prise de force aux disques ou vis sans fin qui r\u00e9partissent l'engrais de mani\u00e8re large et uniforme. Ces r\u00e9ducteurs sont con\u00e7us avec des mat\u00e9riaux r\u00e9sistants \u00e0 la corrosion et des m\u00e9canismes de contr\u00f4le de vitesse pr\u00e9cis afin de supporter la nature chimiquement active et abrasive des engrais.<\/p>\n<h4>Avantages des bo\u00eetes de vitesses pour \u00e9pandeurs d'engrais<\/h4>\n<ul>\n<li>Con\u00e7u pour une rotation constante et \u00e0 grande vitesse des disques, cr\u00e9ant des motifs d'\u00e9pandage uniformes sur de larges largeurs de coupe, ce qui est essentiel pour une distribution homog\u00e8ne des nutriments et une optimisation du rendement des cultures.<\/li>\n<li>Les syst\u00e8mes d'engrenages internes permettent un r\u00e9glage pr\u00e9cis de la vitesse et du couple pour s'adapter aux diff\u00e9rents types d'engrais (granul\u00e9s, pastilles, poudre) et aux exigences d'\u00e9pandage sur le terrain, sans modifications m\u00e9caniques s\u00e9par\u00e9es.<\/li>\n<li>Le bo\u00eetier et les composants sont trait\u00e9s avec des rev\u00eatements r\u00e9sistants aux produits chimiques et scell\u00e9s contre l'humidit\u00e9 afin d'\u00e9viter la corrosion due \u00e0 la poussi\u00e8re d'engrais, aux sels et aux conditions de stockage humides.<\/li>\n<li>G\u00e9n\u00e9ralement plus l\u00e9g\u00e8res et plus compactes que les bo\u00eetes de vitesses de motoculteurs, car les charges de fonctionnement sont plus faibles et consistent principalement en une rotation de disque \u00e0 vitesse constante sans les forces d'impact des lames en contact avec le sol.<\/li>\n<\/ul>\n<h4>Applications des bo\u00eetes de vitesses pour \u00e9pandeurs d'engrais<\/h4>\n<ul>\n<li>\u00c9pandage \u00e0 la vol\u00e9e d'engrais granulaires, de chaux, de gypse et d'amendements du sol sur de vastes champs de cultures en rangs et de c\u00e9r\u00e9ales \u00e0 l'aide d'\u00e9pandeurs \u00e0 disques centrifuges.<\/li>\n<li>Application pr\u00e9cise de semences, de sel, de sable et de produits de d\u00e9givrage sur les routes, les propri\u00e9t\u00e9s commerciales et les zones d'entretien des terrains municipaux \u00e0 l'aide de syst\u00e8mes \u00e0 taux variable.<\/li>\n<li>Le surfa\u00e7age des gazons sur les terrains de sport, les parcours de golf et les projets d'am\u00e9nagement paysager o\u00f9 une r\u00e9partition uniforme \u00e0 des taux contr\u00f4l\u00e9s est essentielle pour maintenir la qualit\u00e9 de la surface.<\/li>\n<li>Distribution d'engrais organiques et sp\u00e9cialis\u00e9s dans les vignobles, les vergers et les exploitations de cultures sp\u00e9cialis\u00e9es o\u00f9 la pr\u00e9cision de l'application influe directement sur la qualit\u00e9 du produit et le respect de l'environnement.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h3>Tableau comparatif\u00a0:<\/h3>\n<div>\n<table style=\"height: 400px; width: 100%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<thead>\n<tr>\n<th style=\"text-align: center;\">Fonctionnalit\u00e9<\/th>\n<th style=\"text-align: center;\">Bo\u00eete de vitesses pour motoculteur<\/th>\n<th style=\"text-align: center;\">Bo\u00eete de vitesses d'\u00e9pandeur d'engrais<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\">Fonction principale<\/td>\n<td style=\"text-align: center;\">Entra\u00eene le rotor et les lames de la fraise \u00e0 travers le sol<\/td>\n<td style=\"text-align: center;\">Entra\u00eene des disques rotatifs ou des vis sans fin pour l'\u00e9pandage de mat\u00e9riaux<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Type de charge typique<\/td>\n<td style=\"text-align: center;\">Impact \u00e9lev\u00e9, variable (charges de choc provenant du sol, des roches)<\/td>\n<td style=\"text-align: center;\">Rotation r\u00e9guli\u00e8re \u00e0 vitesse constante (faible impact)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Plage de rapports de transmission<\/td>\n<td style=\"text-align: center;\">1:1 \u00e0 1:3+ (r\u00e9duction du couple)<\/td>\n<td style=\"text-align: center;\">1:1 \u00e0 1:2,5 (souvent avec augmentation de la vitesse)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Mat\u00e9riau du bo\u00eetier<\/td>\n<td style=\"text-align: center;\">Fonte robuste (par exemple GG25)<\/td>\n<td style=\"text-align: center;\">Fonte ou alliage d'aluminium avec traitement anticorrosion<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Exposition environnementale<\/td>\n<td style=\"text-align: center;\">Terre, boue, roches, humidit\u00e9, d\u00e9bris de r\u00e9colte<\/td>\n<td style=\"text-align: center;\">Poussi\u00e8res d'engrais, sels, humidit\u00e9, agents chimiques<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Couple requis<\/td>\n<td style=\"text-align: center;\">Haute (\u00e0 r\u00e9sistance variable, en contact avec le sol)<\/td>\n<td style=\"text-align: center;\">Mod\u00e9r\u00e9 (inertie du disque et flux de mati\u00e8re)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Priorit\u00e9 de scellement<\/td>\n<td style=\"text-align: center;\">Exclusion de la terre et des particules abrasives<\/td>\n<td style=\"text-align: center;\">r\u00e9sistance chimique et \u00e0 l'humidit\u00e9<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Poids<\/td>\n<td style=\"text-align: center;\">Plus lourd (construction robuste pour r\u00e9sister aux chocs)<\/td>\n<td style=\"text-align: center;\">G\u00e9n\u00e9ralement plus l\u00e9ger (demande structurelle plus faible)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8350 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.46.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.46.webp 800w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.46-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour fraise rotative T-19A 1-1,46\" width=\"800\" height=\"800\" \/><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8073 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/0_Fertilizer-Spreader-Gearbox-5.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/0_Fertilizer-Spreader-Gearbox-5.webp 1000w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/0_Fertilizer-Spreader-Gearbox-5-980x980.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/0_Fertilizer-Spreader-Gearbox-5-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses d&#039;\u00e9pandeur d&#039;engrais\" width=\"1000\" height=\"1000\" \/><\/td>\n<\/tr>\n<tr style=\"height: 18px;\">\n<td style=\"height: 18px; text-align: center; width: 50%;\"><strong>Bo\u00eete de vitesses pour motoculteur\u00a0<\/strong><\/td>\n<td style=\"height: 18px; text-align: center; width: 50%;\"><strong>Bo\u00eete de vitesses d'\u00e9pandeur d'engrais<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Bo\u00eete de vitesses pour cultivateur rotatif et arbre de prise de force agricole<\/h2>\n<p>Rotary cultivator gearboxes are essential components in agricultural machinery, transferring power from the tractor’s PTO or engine to the tiller rotor while ensuring consistent soil cultivation performance. The internal gear set adjusts speed and torque to handle varying soil conditions, and the heavy-duty construction ensures long-term durability across hundreds or thousands of hours of field operation. In any rotary tiller installation, the gearbox sits at the critical junction between the PTO driveline and the implement’s working components, converting the tractor’s rotational output into the specific speed and torque combination that the tiller blades need to perform effective soil cultivation.<\/p>\n<p>The agricultural PTO shaft for a rotary tiller functions as the critical driveline that transmits mechanical power from a tractor’s rear output directly to the implement’s gearbox input. This shaft typically consists of two telescoping halves connected by universal joints at each end, allowing for angular misalignment and length changes as the tiller follows the tractor over uneven terrain. The inner half slides within the outer half to accommodate the changing distance between the tractor and the implement during turns, lifts, and transport. Without a properly sized and maintained PTO shaft, the gearbox cannot receive the consistent power input it needs to drive the rotor at the correct speed.<\/p>\n<p>The PTO shaft and the rotary tiller gearbox form a complete power transmission pathway from the tractor engine to the soil-engaging blades. The tractor’s PTO stub shaft drives the driveline shaft at 540 RPM (or 1000 RPM, depending on the tractor configuration), and the driveline shaft delivers that rotation to the gearbox input spline. Inside the gearbox, the gear set reduces the speed and increases the torque according to its ratio (1:1.84 in the case of the T-19A), and the output shaft then drives the tiller rotor. The universal joints in the PTO shaft compensate for the angular offset between the tractor’s PTO height and the gearbox input position, while the telescoping section adjusts for distance changes during three-point hitch operation.<\/p>\n<p>Pour que la bo\u00eete de vitesses du T-19A fonctionne correctement, <a href=\"https:\/\/korea-transmission.com\/fr\/pto-shaft-for-rotary-tiller\/\"><strong>arbre de transmission de prise de force<\/strong><\/a> must match several critical parameters. The shaft’s implement-end yoke must have a 1-3\/8 inch 6-spline bore that fits the gearbox input shaft precisely. The shaft’s torque rating must equal or exceed the gearbox’s 20 HP \/ 137 N\u00b7m capacity to prevent driveline failure under load. The shaft length (collapsed and extended) must suit the distance between the tractor PTO stub and the gearbox input when the tiller is in working position. Universal joint angles should remain below the manufacturer’s recommended maximum (typically 25 to 30 degrees) to prevent vibration, accelerated wear, and power loss through the driveline. An overload protection device, such as a shear bolt or friction clutch built into the PTO shaft assembly, provides an additional layer of safety for the gearbox.<\/p>\n<p>L'arbre de prise de force et la bo\u00eete de vitesses d'un motoculteur n\u00e9cessitent un entretien r\u00e9gulier pour garantir leur fiabilit\u00e9. L'arbre de prise de force requiert un graissage p\u00e9riodique de ses joints de cardan et de sa partie t\u00e9lescopique, une inspection des protections et la v\u00e9rification de l'\u00e9tat des cannelures du joug. La bo\u00eete de vitesses exige un contr\u00f4le du niveau d'huile avant chaque utilisation, des vidanges d'huile programm\u00e9es (d'abord toutes les 50 \u00e0 70 heures, puis toutes les 500 heures ou annuellement) et une inspection de l'\u00e9tanch\u00e9it\u00e9 des joints d'arbre. Si l'un des composants pr\u00e9sente des signes d'usure, de vibration ou de bruit anormal, il convient de les inspecter ensemble plut\u00f4t que s\u00e9par\u00e9ment, car un probl\u00e8me sur l'un affecte directement l'autre. CMN Transmission fournit des bo\u00eetes de vitesses pour motoculteurs et des arbres de prise de force compatibles afin de constituer une solution de transmission adapt\u00e9e \u00e0 votre \u00e9quipement.<\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6898 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-Farm-Maxx-Rotary-Tiller.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-Farm-Maxx-Rotary-Tiller.webp 800w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-Farm-Maxx-Rotary-Tiller-480x480.webp 480w\" alt=\"Arbre de prise de force pour fraise rotative Farm-Maxx\" width=\"800\" height=\"800\" \/><\/h2>\n<h2>Why Choose CMN Transmission’s Rotary Tiller Gearboxes?<\/h2>\n<p>Korea CMN Transmission Co., Ltd., fond\u00e9e en 2000 et bas\u00e9e \u00e0 Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, en Cor\u00e9e du Sud, emploie plus de 100 personnes d\u00e9di\u00e9es \u00e0 la recherche, au d\u00e9veloppement, \u00e0 la fabrication, \u00e0 la vente et au service apr\u00e8s-vente. Au cours des deux derni\u00e8res d\u00e9cennies, CMN Transmission s'est impos\u00e9e comme une r\u00e9f\u00e9rence dans le secteur mondial des r\u00e9ducteurs agricoles, exportant ses produits dans plus de 60 pays d'Am\u00e9rique du Nord, d'Am\u00e9rique du Sud, d'Europe, d'Asie, d'Afrique et d'Oc\u00e9anie.<\/p>\n<p>Notre gamme de produits couvre pr\u00e8s de mille sp\u00e9cifications de r\u00e9ducteurs, r\u00e9parties dans un catalogue complet d'\u00e9quipements de transmission de puissance agricole. Celle-ci inclut des r\u00e9ducteurs pour fraises rotatives, faucheuses rotatives, m\u00e9langeuses d'aliments, tondeuses rotatives, \u00e9pandeurs d'engrais, broyeurs \u00e0 fl\u00e9aux, tari\u00e8res, presses \u00e0 balles rondes et carr\u00e9es, faucheuses \u00e0 disques, syst\u00e8mes d'irrigation \u00e0 pivot central, transmissions hydrauliques, ensileuses, pulv\u00e9risateurs arboricoles, andaineurs rotatifs, moissonneuses-batteuses, silos \u00e0 grains, syst\u00e8mes de transport de grains, cueilleuses \u00e0 ma\u00efs, barres de coupe, distributeurs de nourriture pour volailles, ainsi que des r\u00e9ducteurs agricoles sur mesure, fabriqu\u00e9s selon les sp\u00e9cifications du client. Notre gamme de produits comprend \u00e9galement des arbres de prise de force, des joints universels, des \u00e9triers, des tubes, des limiteurs de couple, des couvercles, des adaptateurs, des accouplements, des roulements, des lames, des cha\u00eenes et des pignons.<\/p>\n<p>Avec une capacit\u00e9 de production annuelle sup\u00e9rieure \u00e0 500\u00a0000 unit\u00e9s, CMN Transmission fournit des performances fiables et une durabilit\u00e9 \u00e0 long terme aux \u00e9quipementiers et distributeurs de pi\u00e8ces d\u00e9tach\u00e9es du monde entier. Chaque produit est fabriqu\u00e9 selon des syst\u00e8mes de gestion de la qualit\u00e9 certifi\u00e9s CE et ISO 9001, garantissant un contr\u00f4le qualit\u00e9 rigoureux, de l'approvisionnement en mati\u00e8res premi\u00e8res \u00e0 l'assemblage final, aux tests et \u00e0 l'emballage.<\/p>\n<h3>Principaux avantages<\/h3>\n<ul>\n<li><strong>Deux d\u00e9cennies d'exp\u00e9rience dans la fabrication sp\u00e9cialis\u00e9e<\/strong><br \/>\nDepuis 2000, CMN se consacre exclusivement \u00e0 la production de r\u00e9ducteurs agricoles. Forte de cette longue exp\u00e9rience, notre \u00e9quipe d'ing\u00e9nieurs a r\u00e9solu des milliers de probl\u00e8mes sp\u00e9cifiques \u00e0 diff\u00e9rentes applications, sur divers march\u00e9s mondiaux, dans des conditions de sol vari\u00e9es et avec diff\u00e9rentes plateformes d'\u00e9quipements. Chaque le\u00e7on tir\u00e9e de 25 ans de retours d'exp\u00e9rience sur le terrain est int\u00e9gr\u00e9e \u00e0 la conception de nos produits actuels, notamment le T-19A.<\/li>\n<li><strong>Capacit\u00e9 de production enti\u00e8rement personnalis\u00e9e<\/strong><br \/>\nNous assurons la production sur mesure \u00e0 partir de vos plans, d'\u00e9chantillons de bo\u00eetes de vitesses existants ou de sp\u00e9cifications techniques d\u00e9taill\u00e9es. Que vous ayez besoin d'un rapport de transmission modifi\u00e9, d'une configuration d'arbre alternative, d'un montage non standard ou d'une conception de bo\u00eete de vitesses enti\u00e8rement nouvelle, nos services d'ing\u00e9nierie et d'usinage internes nous permettent de vous fournir des prototypes pr\u00eats pour la production et des commandes en s\u00e9rie r\u00e9pondant pr\u00e9cis\u00e9ment \u00e0 vos exigences.<\/li>\n<li><strong>Logistique mondiale et assistance r\u00e9active<\/strong><br \/>\nNos produits sont export\u00e9s vers les \u00c9tats-Unis, le Canada, le Mexique, le Br\u00e9sil, l'Argentine, la France, l'Allemagne, l'Italie, l'Espagne, le Royaume-Uni, la Russie, la Chine, l'Inde, la Tha\u00eflande, le Vietnam, la Turquie, l'Australie, la Nouvelle-Z\u00e9lande et des dizaines d'autres pays. Notre \u00e9quipe logistique poss\u00e8de une vaste exp\u00e9rience en mati\u00e8re d'exp\u00e9dition internationale, de documentation douani\u00e8re et de normes d'emballage pour les composants de machines agricoles, garantissant ainsi la livraison de votre commande en parfait \u00e9tat, quelle que soit sa destination.<\/li>\n<\/ul>\n<p>En choisissant CMN Transmission comme fabricant et fournisseur de bo\u00eetes de vitesses pour motoculteurs, vous b\u00e9n\u00e9ficiez d'un partenaire de production dot\u00e9 d'une expertise technique pointue, d'une capacit\u00e9 de production \u00e0 grande \u00e9chelle, de certifications de qualit\u00e9 et d'une infrastructure logistique mondiale, vous assurant ainsi un soutien fiable et durable \u00e0 votre activit\u00e9 de mat\u00e9riel agricole. Que vous soyez un constructeur de motoculteurs, un distributeur de pi\u00e8ces d\u00e9tach\u00e9es proposant des bo\u00eetes de vitesses de rechange ou un agriculteur ayant besoin d'une seule unit\u00e9 de remplacement, CMN poss\u00e8de la gamme de produits et l'infrastructure n\u00e9cessaires pour r\u00e9pondre \u00e0 vos besoins. Contactez-nous d\u00e8s aujourd'hui pour nous faire part de vos exigences.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8411 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-Manufacturers-1.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1200px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-Manufacturers-1.webp 1200w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-Manufacturers-1-980x719.webp 980w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-Manufacturers-1-480x352.webp 480w\" alt=\"Fabricants de bo\u00eetes de vitesses pour motoculteurs\" width=\"1200\" height=\"880\" \/><\/p>\n<h2>Foire aux questions<\/h2>\n<p><strong>Q : La bo\u00eete de vitesses CMN T-19A est-elle un remplacement direct de la bo\u00eete de vitesses Comer T-19A d'origine ?<\/strong><br \/>\nR : Oui. Le r\u00e9ducteur CMN T-19A est con\u00e7u pour remplacer, en termes de dimensions et de fonctionnalit\u00e9s, le r\u00e9ducteur de fraise rotative Comer T-19A. Il poss\u00e8de le m\u00eame rapport de r\u00e9duction de 1:1,84, les m\u00eames cannelures d'arbre d'entr\u00e9e et de sortie de 1-3\/8 pouce, les m\u00eames entraxes de fixation et les m\u00eames dimensions d'encombrement. Dans la plupart des cas, il peut \u00eatre boulonn\u00e9 directement \u00e0 l'emplacement du ch\u00e2ssis d'origine sans aucune modification de la fraise ni de la prise de force.<\/p>\n<p><strong>Q : Quel type d'huile dois-je utiliser dans la bo\u00eete de vitesses de la fraise rotative T-19A ?<\/strong><br \/>\nA : Le T-19A est con\u00e7u pour fonctionner avec une huile pour engrenages SAE 80W-90 EP (Extr\u00eame Pression). Cette huile multigrade assure une r\u00e9sistance optimale du film lubrifiant, aussi bien lors des d\u00e9marrages \u00e0 froid que par les temp\u00e9ratures \u00e9lev\u00e9es typiques des travaux agricoles. La bo\u00eete de vitesses a une capacit\u00e9 maximale de 0,9 litre. Remplissez-la par le bouchon de remplissage pr\u00e9vu \u00e0 cet effet, jusqu'\u00e0 ce que le niveau atteigne le bas de l'orifice de remplissage, la bo\u00eete de vitesses \u00e9tant en place. V\u00e9rifiez le niveau d'huile de la bo\u00eete de vitesses de la fraise rotative avant chaque utilisation.<\/p>\n<p><strong>Q : \u00c0 quelle fr\u00e9quence dois-je changer l'huile de la bo\u00eete de vitesses d'une fraise rotative ?<\/strong><br \/>\nA : Proc\u00e9dez \u00e0 la premi\u00e8re vidange apr\u00e8s 50 \u00e0 70 heures de fonctionnement afin d'\u00e9liminer les particules de rodage des engrenages et roulements neufs. Apr\u00e8s cette premi\u00e8re vidange, vidangez et remplacez l'huile toutes les 500 \u00e0 700 heures de fonctionnement, ou au moins une fois par an si le nombre d'heures de fonctionnement est inf\u00e9rieur. Inspectez toujours l'huile vidang\u00e9e afin de d\u00e9tecter la pr\u00e9sence de particules m\u00e9talliques, une d\u00e9coloration ou des traces d'eau, car ces signes peuvent indiquer une usure interne naissante ou une d\u00e9faillance d'\u00e9tanch\u00e9it\u00e9 n\u00e9cessitant une intervention.<\/p>\n<p><strong>Q : Quelle est la puissance maximale admissible pour la bo\u00eete de vitesses T-19A ?<\/strong><br \/>\nR : La bo\u00eete de vitesses T-19A est con\u00e7ue pour une puissance d'entr\u00e9e maximale de 14,7 kW, soit 20 ch. Cette valeur est valable pour une vitesse de prise de force standard de 540 tr\/min. Un fonctionnement au-del\u00e0 de cette puissance acc\u00e9l\u00e9rera l'usure des engrenages et des roulements et pourrait entra\u00eener une panne pr\u00e9matur\u00e9e. Si votre motoculteur n\u00e9cessite une puissance sup\u00e9rieure, veuillez contacter CMN Transmission pour obtenir des recommandations sur un mod\u00e8le plus puissant.<\/p>\n<p><strong>Q : Puis-je utiliser la bo\u00eete de vitesses T-19A avec un tracteur \u00e0 prise de force de 1000 tr\/min ?<\/strong><br \/>\nR : La bo\u00eete de vitesses T-19A est con\u00e7ue pour une vitesse d'entr\u00e9e maximale de 540 tr\/min. Un fonctionnement \u00e0 1\u00a0000 tr\/min d\u00e9passerait cette vitesse et engendrerait des contraintes internes nettement sup\u00e9rieures, pouvant entra\u00eener une surchauffe, une usure acc\u00e9l\u00e9r\u00e9e et une d\u00e9faillance potentielle des engrenages. Si vous avez besoin d'une bo\u00eete de vitesses pour fraise rotative compatible avec une prise de force (PDF) de 1\u00a0000 tr\/min, veuillez contacter notre \u00e9quipe d'ing\u00e9nieurs afin de discuter des mod\u00e8les pr\u00e9sentant la vitesse nominale et le rapport de r\u00e9duction adapt\u00e9s \u00e0 votre application.<\/p>\n<p><strong>Q : La bo\u00eete de vitesses du T-19A est-elle livr\u00e9e pr\u00e9-remplie d'huile ?<\/strong><br \/>\nR : Non. Toutes les bo\u00eetes de vitesses CMN Transmission sont livr\u00e9es sans huile afin d'\u00e9viter les fuites pendant le transport et de permettre au client de choisir la marque d'huile pour engrenages SAE 80W-90 de son choix. Avant la premi\u00e8re utilisation, remplissez la bo\u00eete de vitesses par le bouchon de remplissage d'huile jusqu'au niveau sp\u00e9cifi\u00e9 (0,9 litre maximum). Faire fonctionner la bo\u00eete de vitesses sans huile, m\u00eame bri\u00e8vement, endommagera gravement et imm\u00e9diatement les engrenages et les roulements, ce qui ne sera pas couvert par la garantie.<\/p>\n<p><strong>Q : Quelle est la vitesse de sortie de la bo\u00eete de vitesses T-19A \u00e0 une entr\u00e9e de 540 tr\/min ?<\/strong><br \/>\nA : Avec un rapport de r\u00e9duction de 1:1,84 et une vitesse d'entr\u00e9e standard de 540 tr\/min, l'arbre de sortie du T-19A tourne \u00e0 environ 293 tr\/min. Cette vitesse de sortie r\u00e9duite s'accompagne d'une augmentation proportionnelle du couple, qui peut atteindre 137 N\u00b7m \u00e0 la sortie de l'arbre. La vitesse de sortie exacte peut varier l\u00e9g\u00e8rement en fonction des conditions de charge et des tol\u00e9rances de fabrication du nombre de dents de l'engrenage.<\/p>\n<p><strong>Q : Existe-t-il des pi\u00e8ces de rechange pour la bo\u00eete de vitesses de la fraise rotative T-19A ?<\/strong><br \/>\nR : Oui. CMN Transmission fournit des pi\u00e8ces d\u00e9tach\u00e9es pour bo\u00eetes de vitesses de motoculteurs, notamment des engrenages, des arbres d'entr\u00e9e et de sortie, des roulements, des joints d'huile, des joints d'\u00e9tanch\u00e9it\u00e9, des bouchons de vidange et des composants de carter pour le mod\u00e8le T-19A. Si vous avez besoin d'une pi\u00e8ce de rechange sp\u00e9cifique, veuillez indiquer la r\u00e9f\u00e9rence de la bo\u00eete de vitesses ainsi qu'une description ou une photo de la pi\u00e8ce recherch\u00e9e. Notre \u00e9quipe pi\u00e8ces d\u00e9tach\u00e9es vous confirmera la disponibilit\u00e9, le prix et le d\u00e9lai de livraison.<\/p>\n<p><strong>Q : CMN Transmission peut-elle fournir des r\u00e9ducteurs pour fraises rotatives avec diff\u00e9rents rapports ?<\/strong><br \/>\nR : Oui. Outre le mod\u00e8le T-19A 1:1,84, CMN fabrique \u00e9galement le T-19A en versions 1:1 et 1:1,46. Nous produisons \u00e9galement d'autres mod\u00e8les de r\u00e9ducteurs agricoles couvrant diff\u00e9rentes classes de puissance, diam\u00e8tres d'arbre et configurations de montage. Pour tout besoin sp\u00e9cifique non r\u00e9pertori\u00e9 dans notre catalogue standard, notre \u00e9quipe d'ing\u00e9nieurs peut \u00e9tudier la faisabilit\u00e9 et vous fournir un devis pour des unit\u00e9s modifi\u00e9es ou fabriqu\u00e9es sur mesure.<\/p>\n<p><strong>Q: O\u00f9 puis-je acheter une bo\u00eete de vitesses pour motoculteur T-19A ?<\/strong><br \/>\nA: La bo\u00eete de vitesses T-19A et les autres mod\u00e8les pour fraises rotatives sont disponibles directement aupr\u00e8s de CMN Transmission via notre site web et notre \u00e9quipe commerciale. Nous fournissons des unit\u00e9s individuelles pour les besoins de remplacement des utilisateurs finaux, ainsi que des commandes en gros pour les fabricants d'\u00e9quipement d'origine (OEM) et les distributeurs de pi\u00e8ces agricoles. Pour conna\u00eetre les prix, les d\u00e9lais de livraison et les options d'exp\u00e9dition pour votre r\u00e9gion, veuillez consulter notre page \u00ab\u00a0Nous contacter\u00a0\u00bb ou nous envoyer une demande via le formulaire de demande de devis sur cette page produit.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8353 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-2.16.webp\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" srcset=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-2.16.webp 800w, https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-2.16-480x480.webp 480w\" alt=\"Bo\u00eete de vitesses pour fraise rotative T-19A 1-2,16\" width=\"800\" height=\"800\" \/><\/p>\n<h2>Avis clients<\/h2>\n<p><strong>Mike Thompson, Culture de grandes cultures, \u00c9tats-Unis<\/strong><br \/>\n“We farm about 800 acres of corn and soybeans in central Illinois and run a 4-row rotary tiller behind our 45 HP utility tractor. The original Comer T-19A gearbox had been leaking oil for two seasons, and getting a genuine replacement was going to take weeks. We ordered the CMN T-19A with the 1:1.84 ratio, and the spline fit was identical to the old one. Swapped it out on a Saturday morning, filled it with 80W-90 as recommended, and we were back tilling by lunchtime. After about 340 hours of use so far, no leaks, no noise, runs just like it should. The price was also very reasonable compared to the OEM part.”<\/p>\n<p><strong>James Kowalski, Production de l\u00e9gumes, Canada<\/strong><br \/>\n“I operate a small vegetable farm in Ontario and use a compact rotary tiller for seedbed preparation every spring and fall. When the gearbox failed mid-season last year, I needed a quick turnaround. CMN shipped the T-19A replacement to Toronto within about 10 business days, well packed with foam padding inside the box. The 1-3\/8 six-spline shafts matched my existing PTO line perfectly. I did the first oil change at 60 hours as instructed, and the oil came out clean with no metal particles at all. Going into my second season with this unit now and it has been completely trouble-free.”<\/p>\n<p><strong>Santiago Vargas, agriculture c\u00e9r\u00e9ali\u00e8re, Argentine<\/strong><br \/>\n“We manage about 1,500 hectares of wheat and corn in the Pampas region and use several multi-row tillers for soil preparation. We replaced three worn Comer gearboxes with CMN T-19A units at the start of this planting season. The shipment arrived in Buenos Aires in solid condition, every unit was properly labeled with the ratio and serial number, and all three spline interfaces matched our existing driveshafts without any modification. After the break-in oil change at 65 hours, the insides were spotless. Very impressed with the build quality considering the price point.”<\/p>\n<p><strong>Ricardo Mendes, Distribution de pi\u00e8ces agricoles, Br\u00e9sil<\/strong><br \/>\n“Our company distributes agricultural spare parts across southern Brazil and we have been sourcing rotary tiller gearbox replacements from CMN for about two years now. The T-19A with the 1:1.84 ratio is one of our most requested items because Comer-equipped tillers are very common in our market. Customer feedback has been consistently positive. The cast iron housing feels substantial, the gear finish is smooth, and we have had zero warranty claims on the batch we received last quarter. CMN’s sales team responds quickly and provides clear technical documentation, which helps our warehouse staff verify compatibility before shipping to end users.”<\/p>\n<p><strong>Klaus Bauer, agriculture mixte, Allemagne<\/strong><br \/>\n“We run a mixed farm in Bavaria with about 120 hectares of arable land and 40 hectares of pasture. Our rotary tiller is a 2.5-meter Italian-made unit with a Comer T-19A gearbox that needed replacing after the output seal failed and we ran it too long with low oil. I was a bit hesitant about buying a non-OEM replacement, but after comparing the dimensional drawings and specifications, everything matched. Installation took less than 45 minutes. We have been using it in clay-heavy soil for about 200 hours and the gearbox runs quiet and cool. Good quality product at a fair price.”<\/p>\n<p><strong>Pierre Lefebvre, Cultures sp\u00e9cialis\u00e9es, France<\/strong><br \/>\n“We grow lavender and sunflowers in the Provence area and rely on a compact tiller for between-row cultivation. The original gearbox on our Italian tiller was 15 years old and had developed a persistent oil leak that we could not fix by replacing seals alone. We ordered the CMN T-19A as a complete replacement. The customer service was excellent during the ordering process, they even confirmed the bolt pattern compatibility from our photos before shipping. Delivery to France took about two weeks. The unit bolted right in and has been running smoothly for one full growing season now. I appreciated that they included detailed oil-change instructions with the gearbox.”<\/p>\n<p><strong>Somchai Phetcharoen, Production de riz, Tha\u00eflande<\/strong><br \/>\n“Our rice farming operation in Chiang Mai province uses rotary tillers extensively for paddy field preparation. The soil here is very wet and sticky during the monsoon season, so the gearbox takes a lot of punishment. We switched to the CMN T-19A after our previous replacement gearbox from another supplier failed within six months. The CMN unit has now completed a full wet season and dry season cycle, roughly 500 hours of heavy use, and we just did the second oil change. Everything inside looks normal, no metal filings, seals are holding well despite the constant mud exposure. Very happy with this purchase.”<\/p>\n<p><strong>Rajesh Patil, Culture mara\u00eech\u00e8re, Inde<\/strong><br \/>\n“We have a 40-acre market garden near Pune where we grow onions, tomatoes, and leafy greens for local wholesale markets. The tiller is essential for bed preparation, and when our old gearbox broke a gear tooth, we could not afford to wait. CMN arranged an air freight option that got the T-19A to us in about a week. The 1:1.84 ratio matched our tiller perfectly, and the shaft splines fit without any machining. I also liked that the gearbox came with a label showing the oil type and fill capacity right on the housing. We have been running it for about 150 hours now with no issues at all. Will order again when we need more spare parts.”<\/p>\n<p><strong>Craig Henderson, entrepreneur agricole, Australie<\/strong><br \/>\n“I run a contracting business in Queensland doing soil preparation, pasture renovation, and land clearing for other farmers. Our tillers see a lot of rough country, red clay soils with rocks, and long working days. We ordered two CMN T-19A gearboxes as spares and have already installed one after the Comer original wore out on our busiest machine. The replacement has been running for about three months through some very demanding ground conditions, and I am genuinely impressed with how it has held up. The cast iron housing is thick and well-finished, and the gears are noticeably quieter than the worn unit we pulled out. Good value for the money, and shipping to Australia was straightforward.”<\/p>","protected":false},"excerpt":{"rendered":"<p>Le r\u00e9ducteur pour fraise rotative T-19A, avec un rapport de 1:1,84, est un syst\u00e8me de transmission agricole de pr\u00e9cision con\u00e7u pour remplacer directement le r\u00e9ducteur Comer T-19A. Fabriqu\u00e9 par CMN Transmission en Cor\u00e9e du Sud, ce r\u00e9ducteur transmet la puissance de rotation de la prise de force (PDF) du tracteur aux lames rotatives de la fraise rotative, aussi appel\u00e9e rotoculteur. Gr\u00e2ce \u00e0 son syst\u00e8me d'engrenages cylindriques internes, le r\u00e9ducteur ajuste la vitesse de rotation et augmente le couple de sortie lors de la r\u00e9duction, d\u00e9livrant un couple maximal de 137 N\u00b7m pour une puissance allant jusqu'\u00e0 20 ch.<\/p>","protected":false},"featured_media":8351,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"The T-19A Rotary Tiller Gearbox with a 1:1.84 ratio is a precision-built agricultural power transmission unit engineered as a direct replacement for the Comer T-19A gearbox. Manufactured by CMN Transmission in South Korea, this rotary tiller gearbox transfers rotational power from a tractor's power take-off (PTO) shaft to the rotating blades of a rotary tiller, commonly known as a rotavator. Through its internal spur gear system, the gearbox adjusts rotational speed and increases output torque during reduction operation, delivering 137 N\u00b7m of maximum torque at up to 20 HP. Constructed with a durable cast iron GG25 housing, hardened alloy steel gears, sealed bearings, and premium oil seals, the T-19A is built to handle the rigors of daily soil cultivation across diverse field conditions.\r\n\r\nThis gearbox for rotary tiller supports a wide range of agricultural applications including multi-row rotary tillers, mowers, fertiliser spreaders, and band saws. Whether you are preparing seedbeds in loose sandy soil, breaking up compacted clay fields, or incorporating crop residues before planting season, the T-19A delivers consistent rotor speed and reliable power transmission. Both input and output shafts feature standard 1-3\/8 inch 6-spline connections (Z6), ensuring broad compatibility with existing PTO drivelines and tiller rotor drives. With a compact 14 kg design and straightforward bolt-on mounting, installation can be completed in the field without specialized tooling.\r\n\r\n<img class=\"aligncenter wp-image-8351 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.84.webp\" alt=\"T-19A Rotary Tiller Gearbox 1-1.84\" width=\"800\" height=\"800\" \/>\r\n<h2>Technical Parameters<\/h2>\r\n<table class=\"alignleft\" style=\"width: 100%;height: 706px\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\r\n<tbody>\r\n<tr style=\"height: 23px\">\r\n<td style=\"text-align: center;width: 41.5771%;height: 23px\"><strong>Model<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">T-19A Gearbox 1:1.84<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"text-align: center;width: 41.5771%;height: 23px\"><strong>Replace Brand<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">Comer<\/td>\r\n<\/tr>\r\n<tr style=\"height: 123px\">\r\n<td style=\"text-align: center;width: 41.5771%;height: 123px\"><strong>Product Details<\/strong><\/td>\r\n<td style=\"text-align: center;width: 58.184%;height: 123px\">\r\n<ul>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">All gearboxes are supplied without oil.<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">First oil change after 50-70 operating hours, then after 500-700 operating hours or at least once a year.<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Contact us for power at a different RPM.<\/li>\r\n<\/ul>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 146px\">\r\n<td style=\"text-align: center;width: 41.5771%;height: 146px\"><strong>Application Range<\/strong><\/td>\r\n<td style=\"text-align: center;width: 58.184%;height: 146px\">\r\n<ul>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Various (agricultural) applications<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Multi-row rotary tillers<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Mowers<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Fertiliser spreaders<\/li>\r\n \t<li class=\"_1f26mj97\" style=\"text-align: left\">Band saws<\/li>\r\n<\/ul>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Ratio\u00a0<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">1:1.84<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Connection 1 Outside Diameter inch and splines<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">1.3\/8-6<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Connection 2 Outside Diameter inch and splines<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">1.3\/8-6<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. input Power<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">14.7 kW<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. input Rotation Speed<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">540 r\/min<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. output Power<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">14.7 kW<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. output power<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">20 HP<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. output Torque<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">137 N\u00b7m<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Gear Arrangement Increasing<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">23-24<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Gear Arrangement Reducing<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">3-4<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Contains Oil<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">No<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. oil Capacity<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">0.9 L<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Max. Oil Change Interval<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">500 h<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Oil SAE Viscosity Grade<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">80W-90<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Housing Material<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">Cast iron GG25<\/td>\r\n<\/tr>\r\n<tr style=\"height: 23px\">\r\n<td style=\"width: 41.5771%;text-align: center;height: 23px\"><strong>Weight<\/strong><\/td>\r\n<td style=\"width: 58.184%;height: 23px\">14 kg<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nWe have completed a third-party supplier audit and company verification supported by SGS \/ T\u00dcV Rheinland. This verification helps buyers review company identity, business operations, supplier profile and general manufacturing capability. Product-specific inspection reports, material documents or compliance records can be provided according to order requirements.\r\n\r\n<strong>Minimum Order Quantity (MOQ):<\/strong>\u00a0Flexibly set based on the product type and order amount.\r\n\r\n<strong>Samples:<\/strong>\u00a0New customers may request 1\u20135 samples under appropriate circumstances.\r\n\r\n<strong>Mixed Orders:<\/strong>\u00a0Combining different models is supported; the total order amount must reach approximately $1,500.\r\n\r\n<strong>Small Orders:<\/strong>\u00a0Orders starting from 1\u20132 pieces are supported, but the unit price will be relatively higher.\r\n\r\n<strong>Lead Time:<\/strong>\u00a010\u201325 working days for standard parts; 20\u201345 working days for customized components; 45\u2013120 working days for project-based equipment.\r\n\r\n<strong>Trade Terms:<\/strong>\u00a0EXW, FOB, CIF, and DAP are generally supported; FCA, CFR, CPT, CIP, and DDP terms can be specifically negotiated.\r\n<h2>T-19A Rotary Tiller Gearbox Dimensions<\/h2>\r\n<img class=\"aligncenter wp-image-8404 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-1.webp\" alt=\"T-19A Rotary Tiller Gearbox Dimensions\" width=\"1981\" height=\"991\" \/> <img class=\"aligncenter wp-image-8405 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-2.webp\" alt=\"T-19A Rotary Tiller Gearbox Dimensions\" width=\"1364\" height=\"1153\" \/> <img class=\"aligncenter wp-image-8406 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-Dimensions-3.webp\" alt=\"T-19A Rotary Tiller Gearbox Dimensions\" width=\"1123\" height=\"1401\" \/>\r\n<h2>Key Advantages of the T-19A Rotary Cultivator Gearbox<\/h2>\r\n1. High Torque Output\r\nDelivering a maximum output torque of 137 N\u00b7m at 20 HP, this rotary cultivator gearbox is optimized for high-load soil cultivation. The 1:1.84 reduction ratio converts PTO input speed into greater rotational force at the tiller rotor, enabling the blades to cut through compacted clay, dry hard ground, and root-laden soil without stalling. The torque capacity is calibrated to match the demands of multi-row rotary tillers operating across varying terrain types, from loose sandy soils to heavy clay fields, keeping the rotor turning at a steady, productive pace regardless of the resistance encountered.\r\n\r\n2. High-Strength Gear Design\r\nThe T-19A features high-strength alloy steel gears that undergo precision machining and controlled heat treatment to achieve optimal surface hardness and wear resistance. Each gear is finished through hobbing, shaving, and grinding processes to maintain tight dimensional tolerances. This multi-step manufacturing approach reduces gear noise, improves meshing efficiency, and significantly extends the operating life of the tiller gearbox. The result is a gear set that delivers smooth, consistent power transmission even after thousands of hours of field operation in abrasive soil conditions.\r\n\r\n3. Compact and Lightweight Structure\r\nWeighing just 14 kg, the T-19A adopts a modular housing design that fits into the same mounting envelope as the original Comer T-19A unit. The compact footprint makes it compatible with a wide range of small to mid-size rotary tillers and rotavators without structural modifications. Standard bolt patterns and 1-3\/8 inch 6-spline shaft connections allow for a direct bolt-on swap, which means field technicians can complete a gearbox replacement during scheduled maintenance windows with basic hand tools and minimal machine downtime.\r\n\r\n4. Industrial-Grade Cast Iron GG25 Housing\r\nThe gearbox housing is precision-cast from GG25 grade grey cast iron, a material selected for its excellent vibration damping properties, high compressive strength, and resistance to surface wear. Unlike lighter alloy alternatives, the GG25 housing absorbs shock loads generated when tiller blades encounter rocks, roots, or compacted soil layers. The casting surfaces are machined to close tolerances at bearing seats and flange faces, ensuring proper alignment of the internal gear train and extending the service life of the agricultural gearbox under repetitive impact conditions.\r\n\r\n5. Advanced Sealing System\r\nEach shaft entry point is fitted with multi-lip oil seals and dust exclusion rings that form a layered barrier against soil particles, moisture, and crop debris. The sealing system is designed to maintain internal oil pressure while preventing lubricant leakage during extended operation. A dedicated oil plug and breather vent on the housing allow pressure equalization as the gearbox heats up during work, preventing seal blowout. This sealing arrangement drastically reduces the frequency of maintenance and keeps the rotary tiller gearbox parts clean and properly lubricated throughout the season.\r\n\r\n6. Customized Engineering\r\nCMN Transmission provides custom production services covering gear ratio modifications, alternative shaft configurations, and adjusted mounting arrangements. If your a specific tiller design or regional soil conditions call for a non-standard setup, our engineering team can adapt the T-19A parameters to your requirements. This service is particularly valuable for OEM equipment manufacturers and distributors who supply rotary tillers in markets with unique soil profiles, tractor standards, or implement designs. We work from customer drawings, existing gearbox samples, or detailed technical specifications to deliver precisely matched units.\r\n\r\n7. Certified Quality and Global Supply\r\nEvery T-19A unit is manufactured under ISO 9001 certified quality management and carries CE certification for the European market. From incoming raw material inspection through final assembly and run-in testing, each production stage follows documented procedures with traceable quality records. CMN Transmission ships to over 60 countries worldwide and maintains consistent stock levels to support both spot orders and long-term OEM supply agreements.\r\n\r\n<img class=\"aligncenter wp-image-8427 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-15.webp\" alt=\"Rotary Tiller Gearbox\" width=\"1000\" height=\"1000\" \/>\r\n<h2>Operating Principle<\/h2>\r\nThe T-19A rotavator gearbox receives mechanical power from the tractor's rear PTO shaft, which commonly rotates at 540 RPM in standard agricultural configurations. This input enters the gearbox through a 1-3\/8 inch 6-spline input shaft and engages the internal spur gear set. With a reduction ratio of 1:1.84, the gearbox converts the incoming 540 RPM into approximately 293 RPM at the output shaft. This speed reduction is accompanied by a proportional increase in torque, delivering up to 137 N\u00b7m of rotational force to the tiller rotor. The lower speed and higher torque at the output side gives the tiller blades the mechanical advantage needed to cut into compacted or rocky soil without overwhelming the tractor's drivetrain.\r\n\r\nInside the cast iron GG25 housing, the T-19A uses a pair of precision-ground spur gears arranged in a specific tooth count configuration. The increasing arrangement uses a 23-24 gear pair, while the reducing arrangement employs a 3-4 configuration. When the input pinion gear (with fewer teeth) drives the larger output gear, the speed decreases and the torque multiplies according to the gear ratio. The gear teeth are case-hardened to resist pitting and spalling under high-contact stress, and the tooth profiles are ground to achieve tight engagement tolerances. This careful manufacturing ensures that the gear mesh transfers power efficiently with minimal energy loss to heat or vibration, keeping the overall transmission efficiency well above 95 percent during normal field operation.\r\n\r\nThe output shaft of the gearbox for rotary cultivator connects to the tiller rotor drive through a matching 1-3\/8 inch 6-spline coupling. As the output shaft turns, it drives the horizontal rotor and its array of L-shaped or C-shaped tiller blades through the soil. The steady output speed produced by the gear reduction maintains consistent blade engagement depth and soil mixing quality, even when the tractor encounters patches of harder ground or varying moisture content. This consistent rotor speed is critical for producing uniform seedbed texture and thorough incorporation of organic matter, crop residues, and applied fertilizers.\r\n\r\nThe robust GG25 cast iron housing serves as both a structural frame and an environmental barrier. Its thick walls absorb the vibration and impact forces that travel through the drivetrain during tilling, preventing those forces from loosening internal components or fatiguing the mounting hardware. The housing surfaces are treated with corrosion-resistant coatings to withstand prolonged exposure to soil moisture, fertilizer chemicals, and temperature cycling between cold morning starts and peak operating heat. Effective seals at every shaft opening and housing joint keep soil particles, grit, and moisture from entering the oil bath, protecting the gears and bearings from abrasive damage. A breather vent allows internal air pressure to equalize as the gearbox warms up, preventing pressure buildup that could push oil past the seals.\r\n\r\nIn many rotary tiller installations, the drivetrain between the PTO and the gearbox includes an overload protection device such as a shear bolt coupling, a friction slip clutch, or a torque limiter. These safety mechanisms are designed to interrupt the power flow if the rotor suddenly jams against a large rock, a buried stump, or an immovable object. By absorbing or releasing the shock load before it reaches the gearbox internals, these devices protect the gear teeth, shafts, bearings, and housing from catastrophic failure. When selecting or replacing a T-19A gearbox, it is recommended to verify that the PTO shaft assembly includes a properly rated overload protection device matched to the 20 HP and 137 N\u00b7m torque capacity of the gearbox.\r\n\r\n<img class=\"aligncenter wp-image-8419 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-7.webp\" alt=\"Rotary Tiller Gearbox\" width=\"1200\" height=\"900\" \/>\r\n<h2>Applications of the T-19A Rotary Tiller Gearbox<\/h2>\r\n<div>\r\n<h3>Seedbed Preparation and Primary Cultivation<\/h3>\r\nThe primary use of any rotary tiller gearbox is powering the blades that mix and pulverize soil to create a fine, uniform seedbed. The T-19A provides steady torque to the rotor as it breaks apart clods, levels the surface, and creates the crumb structure that seeds need for good soil-to-seed contact. This application is fundamental across grain farming, vegetable production, and nursery operations where consistent germination rates depend on properly prepared planting surfaces.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Crop Residue Incorporation and Composting<\/h3>\r\nAfter harvest, rotary tillers powered by gearboxes like the T-19A are used to chop and incorporate crop stubble, straw, and plant residues into the topsoil layer. This process accelerates decomposition by mixing organic matter with soil microorganisms and oxygen. The agricultural gearbox for rotary tiller maintains consistent rotor speed to ensure thorough mixing of compost, green manure, or applied fertilizer throughout the tilling depth, promoting nutrient recycling and soil health improvement ahead of the next planting cycle.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Light Land Leveling and Surface Finishing<\/h3>\r\nOn small plots, vegetable beds, and orchard floors, the rotary tiller serves double duty as a leveling tool. The rotating blades smooth out ruts, fill in low spots, and create an even surface texture that improves irrigation distribution and reduces puddling. The T-19A rotary cultivator gearbox keeps the rotor speed consistent during these finishing passes, which is critical for achieving the precise, uniform soil texture required in high-value crop production and raised bed farming systems.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Vineyard and Orchard Floor Management<\/h3>\r\nCompact rotary tillers equipped with the T-19A gearbox are widely used between vineyard rows and under orchard tree canopies where space is limited and precise cultivation is necessary. The gearbox drives the tiller blades to control weed growth, incorporate cover crop residues, and loosen the soil surface to improve water infiltration around root zones. Its compact 14 kg footprint and standard spline connections make it suitable for the smaller, specialized tiller implements that work in these narrow, high-value production environments.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Vegetable Bed Formation and Market Garden Work<\/h3>\r\nMarket gardeners and commercial vegetable growers rely on rotary tillers to build raised beds, incorporate amendments, and prepare fine-textured planting rows. The T-19A delivers the consistent blade speed and torque control that these operations demand, ensuring each bed receives the same cultivation intensity. Whether the grower is working light sandy loam or heavy alluvial soil, the agricultural gearbox for rotavator keeps the rotor performing at the same standard, which directly affects crop uniformity and yield predictability across the entire planting area.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Pasture Renovation and Grassland Management<\/h3>\r\nLivestock farms use rotary tillers to renovate degraded pastures by breaking up the existing sod, incorporating seed, and mixing in lime or fertilizer. The T-19A gearbox handles the heavy loads that come from cutting through established grass root mats and compacted grazing surfaces. This renovation process restores productive grass stands without full reseeding, saving time and input costs. The gearbox's reliable torque output ensures that the tiller can process even heavily matted pasture sections without requiring multiple passes.\r\n\r\n<\/div>\r\n<div>\r\n<h3>Road Shoulder and Construction Site Soil Preparation<\/h3>\r\nBeyond traditional farming, rotary tillers equipped with the T-19A find use in preparing soil along road shoulders, embankments, and construction sites where the ground needs to be loosened and graded before seeding or surfacing. The gearbox withstands the abrasive conditions found in these non-agricultural environments, where soil may contain gravel, construction debris, and compacted fill material. Its durable cast iron housing and hardened gear set handle these tough conditions without the rapid wear that lighter gearbox designs would experience.\r\n\r\n<\/div>\r\n<img class=\"aligncenter wp-image-8413 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-1.webp\" alt=\"Rotary Tiller Gearbox\" width=\"1200\" height=\"900\" \/>\r\n<h2>How to Select the Right Agricultural Gearbox for Rotary Tiller<\/h2>\r\n1. Start with Your Tractor and Tiller Specifications\r\nBefore selecting a gearbox for rotary tiller, gather the key operating parameters: tractor horsepower, PTO output power and speed, rotary tiller working width, required rotor speed, tilling depth, prevailing soil conditions, input and output shaft specifications, mounting position, and any existing gearbox model numbers or technical drawings. These parameters collectively define the speed, torque, and installation requirements your replacement gearbox must satisfy. Keep in mind that two tractors with similar horsepower ratings may still require different gearbox configurations because tiller width, blade arrangement, rotor speed, and soil resistance can vary significantly between operations.\r\n\r\n2. Match the Gearbox to Tractor Power\r\nTractor horsepower serves as an important reference point, but the gearbox should be matched to the actual power transmitted through the PTO and the load generated by the tiller under working conditions. An undersized agricultural gearbox may experience excessive heat buildup, accelerated bearing wear, gear tooth damage, or shortened service life. An unnecessarily oversized unit may add weight, increase cost, and create installation clearance problems. When requesting a gearbox recommendation, provide complete information including tractor power, PTO specifications, tiller width, and typical operating conditions rather than relying on horsepower alone.\r\n\r\n3. Confirm PTO Speed\r\nPTO speed is one of the most critical specifications when choosing a rotary tiller gearbox. Most agricultural implements operate with standard PTO inputs of either 540 RPM or 1000 RPM, and the gearbox converts this input into the output speed required by the tiller rotor. Before placing an order, confirm the PTO input speed of your tractor, the gearbox rated input speed, the required output speed at the rotor, and the rotation direction. Two gearboxes with identical external dimensions and mounting patterns may produce very different rotor speeds if their internal gear ratios differ, so this verification step is essential.\r\n\r\n4. Select the Correct Gear Ratio\r\nThe rotary tiller gearbox ratio determines the relationship between input and output speed (Gear Ratio = Input Speed \/ Output Speed). However, the ideal ratio depends on more than just speed conversion. Rotor diameter, blade configuration, tilling depth, soil resistance, tractor power, and forward travel speed all influence which ratio produces the best cultivation result. A higher rotor speed is not always better: hard soil and deep tillage increase load substantially, so speed and torque should be evaluated together. The T-19A's 1:1.84 ratio provides a balanced combination suitable for typical multi-row tiller applications up to 20 HP.\r\n\r\n5. Consider Tiller Working Width\r\nTiller width directly affects the transmission load placed on the gearbox. A narrow tiller working behind a compact tractor generally creates less drivetrain load than a wider implement operating at the same PTO speed and tilling depth. As working width increases, more blades engage the soil simultaneously, raising both the torque demand and the heat generated within the gearbox. The gearbox, rotor, shafts, and PTO system should be specified as a complete transmission system rather than selected independently. Always provide the actual tiller working width to your rotary tiller gearbox suppliers when requesting a quotation or replacement recommendation.\r\n\r\n6. Match the Gearbox to Soil Conditions\r\nSoil type can change gearbox loading dramatically. Light or previously cultivated soil creates moderate, stable resistance, while clay and compact ground increase blade resistance and demand greater torque capacity from the gearbox. Dry, hard soil can generate repeated impact loads as blades enter and exit the ground surface, stressing gears, shafts, bearings, and the housing structure. If the same tiller model will be deployed across different regions or sold into multiple markets, the gearbox selection should account for the most demanding soil conditions that the equipment will encounter during its service life.\r\n\r\n7. Check Shaft and Spline Compatibility\r\nEven when power rating and gear ratio are correctly matched, a gearbox cannot be installed if the shaft configuration does not physically connect to the tractor PTO and tiller rotor drive. Verify input shaft diameter, output shaft diameter, spline type and count, keyway dimensions, shaft length, shaft orientation, and rotation direction before ordering. For OEM and replacement projects, providing technical drawings, existing gearbox samples, or detailed dimensional measurements greatly improves the accuracy of model matching and avoids costly returns due to fit issues.\r\n\r\n8. Check Mounting Dimensions and Clearance\r\nSmall and mid-size rotary tiller gearboxes often fit into limited installation spaces on the tiller frame. Before placing an order, confirm the mounting hole pattern, bolt circle center distance, housing external dimensions, input and output shaft positions relative to each other, installation direction (horizontal, vertical, or angled), and available clearance around the gearbox for PTO shaft swing, chain guards, and blade shields. A gearbox with the correct ratio and power rating may still be unsuitable if its mounting envelope does not match the tiller frame structure. The T-19A dimensions are provided in the drawings above for direct comparison with your existing installation.\r\n\r\n<img class=\"aligncenter wp-image-8428 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-16.webp\" alt=\"Rotary Tiller Gearbox\" width=\"1000\" height=\"1000\" \/>\r\n<h2>Common Troubleshooting<\/h2>\r\n<strong>Oil Leakage<\/strong>\r\nVisible lubricant around the shafts, seals, housing joints, or drain plugs typically indicates worn oil seals, loose plugs, damaged sealing surfaces, or hairline cracks in the housing. If the oil level drops noticeably between checks, do not operate the gearbox for extended periods until the source of the leak has been identified and repaired. Running the unit with insufficient oil will lead to rapid gear and bearing damage. Replace any seal that shows signs of hardening, cracking, or deformation, and inspect the shaft surfaces for scoring marks that could prevent a new seal from seating properly.\r\n\r\n<strong>Grinding or Rattling Noise<\/strong>\r\nAny new or unusual mechanical noise coming from the tiller gearbox during operation may indicate insufficient lubrication, bearing wear, gear tooth damage, or incorrect gear mesh engagement. A grinding sound often points to metal-to-metal contact caused by low oil level or degraded lubricant that has lost its viscosity. Rattling may suggest loose internal components or excessive bearing clearance. If the noise becomes severe or is accompanied by vibration, stop the machine immediately and inspect the gearbox internals before resuming operation to avoid further damage.\r\n\r\n<strong>Excessive Vibration<\/strong>\r\nSudden or gradually increasing vibration during tilling may result from several sources: loose gearbox mounting bolts, worn or failed bearings, bent input or output shafts, PTO shaft universal joint problems, rotor imbalance due to missing or damaged blades, or misalignment between the gearbox and the tiller frame. Since vibration can originate from any point in the drivetrain, inspect the complete power path from the tractor PTO through the driveline shaft, gearbox, and rotor assembly rather than assuming the gearbox alone is the cause.\r\n\r\n<strong>Reduced Tilling Performance<\/strong>\r\nWeak rotor performance or noticeable reduction in tilling depth or soil mixing quality can result from several conditions: incorrect PTO speed setting on the tractor, excessive soil resistance due to extreme dryness or compaction, severely worn tiller blades, PTO shaft problems that reduce power delivery, internal gearbox wear that causes power loss, or damaged drivetrain components that slip under load. Compare the symptom with any changes in operating noise, vibration, gearbox temperature, and shaft movement to narrow down the probable cause before disassembly.\r\n\r\n<strong>Rotor Does Not Turn<\/strong>\r\nIf the tractor PTO is operating but the tiller rotor does not turn or turns intermittently, stop the machine immediately. Possible causes include stripped or broken gear teeth inside the gearbox, a sheared input or output shaft, damaged spline connections, failed coupling keys, broken drive chains or sprockets (in chain-driven tiller designs), or a tripped overload protection device (shear bolt or slip clutch). Inspect the PTO shaft connection to the gearbox input first, then check the gearbox output connection to the rotor drive, before opening the gearbox housing for internal inspection.\r\n\r\n<strong>Abnormal Operating Temperature<\/strong>\r\nAll gearboxes generate heat during operation as a natural byproduct of gear mesh friction and oil shearing. However, a clear increase in temperature compared to normal operating conditions may indicate low lubricant level, use of an incorrect oil viscosity grade, bearing problems or preload issues, shaft or gear misalignment, excessive operating load, or increased internal friction from worn components. Compare the operating temperature under consistent working conditions rather than relying on a single absolute temperature reading, since ambient conditions and load intensity affect normal heat generation.\r\n\r\n<strong>Oil Contamination or Discoloration<\/strong>\r\nDuring routine oil changes, inspect the drained oil for signs of contamination. Metallic particles or a grey, milky appearance indicate internal component wear or water ingress through failed seals. Dark, thick oil suggests overheating or excessively long drain intervals. Fine soil particles in the oil indicate a compromised seal or housing crack. In all cases, flush the gearbox housing before refilling with fresh SAE 80W-90 oil, and investigate the root cause. Regular monitoring of oil condition is one of the most effective ways to detect developing <a href=\"https:\/\/korea-transmission.com\/rotary-tiller-gearbox\/\"><strong>rotary tiller gearbox<\/strong> <\/a>problems before they lead to complete failure.\r\n\r\n<strong>Shaft Play or End Movement<\/strong>\r\nIf you can detect axial (end-to-end) or radial (side-to-side) movement in the input or output shaft by hand when the machine is stopped, the bearings supporting that shaft may be worn, improperly preloaded, or damaged. Excessive shaft play allows the gears to move out of their optimal mesh position, which increases noise, reduces efficiency, accelerates tooth wear, and may eventually lead to tooth breakage. Address bearing replacement promptly, and verify that the new bearings are properly preloaded according to the gearbox assembly specifications.\r\n\r\n<img class=\"aligncenter wp-image-8431 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-19.webp\" alt=\"Rotary Tiller Gearbox\" width=\"1000\" height=\"1000\" \/>\r\n<h2>Rotary Tiller Gearbox vs. Fertilizer Spreader Gearbox<\/h2>\r\n<div>\r\n<div>\r\n<h3>What Is a Rotary Tiller Gearbox?<\/h3>\r\nA rotary tiller gearbox, also called a rotary cultivator gearbox, is a critical component in soil cultivation equipment. It transmits mechanical power from the tractor's PTO shaft to the tiller's horizontal rotor and blade assembly, converting rotational speed into the torque needed to break up, mix, and refine soil. These gearboxes are built with heavy-duty housings, hardened gears, and robust seals to survive the constant impact, vibration, and abrasive conditions encountered during ground-engaging work.\r\n<h4>Advantages of Rotary Tiller Gearboxes<\/h4>\r\n<ul>\r\n \t<li>Engineered for high-impact, ground-engaging loads with heavy-duty cast iron or alloy steel housings that absorb shock from rocks, roots, and compacted soil layers during continuous cultivation operations.<\/li>\r\n \t<li>Reduction ratios (such as 1:1.84) convert PTO speed into high output torque, giving the tiller blades the force needed to cut through heavy clay, dry crust, and tangled root systems without stalling.<\/li>\r\n \t<li>Sealed bearing and oil seal systems are specifically designed to exclude fine soil particles and moisture, critical for equipment that operates partially buried in the ground during normal use.<\/li>\r\n \t<li>Available in multiple rotary tiller gearbox ratio configurations and shaft sizes to match a wide range of tractor power classes, tiller widths, and regional soil conditions around the world.<\/li>\r\n<\/ul>\r\n<h4>Applications of Rotary Tiller Gearboxes<\/h4>\r\n<ul>\r\n \t<li>Seedbed preparation for grain crops, vegetables, and nursery stock across all soil types, from sandy loam to heavy clay, in both flat and sloped field conditions.<\/li>\r\n \t<li>Incorporating crop residues, compost, lime, and pre-plant fertilizers into the topsoil to improve soil structure and nutrient distribution before planting.<\/li>\r\n \t<li>Vineyard, orchard, and market garden floor management where compact tillers must work in tight row spacing with precision and consistent soil disturbance depth.<\/li>\r\n \t<li>Pasture renovation, land reclamation, and construction site soil preparation where the tiller must process compacted, rocky, or debris-laden ground materials.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div>\r\n<h3>What Is a Fertilizer Spreader Gearbox?<\/h3>\r\nA fertilizer spreader gearbox, also called a fertilizer distributor gearbox, is an essential component of spreading machinery that delivers granular or powdered material evenly across a field. Positioned at the center of the machine, it transmits PTO power to the spinning discs or augers that distribute fertilizer in a wide, uniform pattern. These gearboxes are engineered with corrosion-resistant materials and precise speed control mechanisms to handle the chemically active and abrasive nature of fertilizer products.\r\n<h4>Advantages of Fertilizer Spreader Gearboxes<\/h4>\r\n<ul>\r\n \t<li>Designed for consistent, high-speed disc rotation that creates uniform spreading patterns across wide swath widths, which is essential for even nutrient distribution and crop yield optimization.<\/li>\r\n \t<li>Internal gear arrangements allow precise speed and torque adjustment to match different fertilizer types (granular, pellet, powder) and field spreading requirements without separate mechanical modifications.<\/li>\r\n \t<li>Housing and components are treated with chemical-resistant coatings and sealed against moisture to prevent corrosion from fertilizer dust, salts, and humid storage conditions.<\/li>\r\n \t<li>Typically lighter and more compact than tiller gearboxes, since operating loads are lower and consist primarily of constant-speed disc rotation without the impact forces of ground-engaging blades.<\/li>\r\n<\/ul>\r\n<h4>Applications of Fertilizer Spreader Gearboxes<\/h4>\r\n<ul>\r\n \t<li>Broadcast application of granular fertilizers, lime, gypsum, and soil amendments across large-scale row crop and cereal grain production fields using centrifugal disc spreaders.<\/li>\r\n \t<li>Precision application of seed, salt, sand, and de-icing materials on roadways, commercial properties, and municipal grounds maintenance areas using variable-rate systems.<\/li>\r\n \t<li>Top-dressing turf grass on sports fields, golf courses, and landscaping projects where uniform distribution at controlled rates is critical for maintaining surface quality.<\/li>\r\n \t<li>Organic and specialty fertilizer distribution in vineyards, orchards, and specialty crop operations where application accuracy directly affects product quality and environmental compliance.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<\/div>\r\n<h3>Comparison Table:<\/h3>\r\n<div>\r\n<table style=\"height: 400px;width: 100%\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\r\n<thead>\r\n<tr>\r\n<th style=\"text-align: center\">Feature<\/th>\r\n<th style=\"text-align: center\">Rotary Tiller Gearbox<\/th>\r\n<th style=\"text-align: center\">Fertilizer Spreader Gearbox<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td style=\"text-align: center\">Primary Function<\/td>\r\n<td style=\"text-align: center\">Drives tiller rotor and blades through soil<\/td>\r\n<td style=\"text-align: center\">Drives spinning discs or augers for material spreading<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Typical Load Type<\/td>\r\n<td style=\"text-align: center\">High-impact, variable (shock loads from soil, rocks)<\/td>\r\n<td style=\"text-align: center\">Steady, constant-speed rotation (low impact)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Gear Ratio Range<\/td>\r\n<td style=\"text-align: center\">1:1 to 1:3+ (reduction for torque)<\/td>\r\n<td style=\"text-align: center\">1:1 to 1:2.5 (often speed-increasing)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Housing Material<\/td>\r\n<td style=\"text-align: center\">Heavy-duty cast iron (e.g. GG25)<\/td>\r\n<td style=\"text-align: center\">Cast iron or aluminum alloy with anti-corrosion treatment<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Environmental Exposure<\/td>\r\n<td style=\"text-align: center\">Soil, mud, rocks, moisture, crop debris<\/td>\r\n<td style=\"text-align: center\">Fertilizer dust, salts, humidity, chemical agents<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Torque Requirement<\/td>\r\n<td style=\"text-align: center\">High (ground-engaging, variable resistance)<\/td>\r\n<td style=\"text-align: center\">Moderate (disc inertia and material flow)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Sealing Priority<\/td>\r\n<td style=\"text-align: center\">Soil and abrasive particle exclusion<\/td>\r\n<td style=\"text-align: center\">Chemical and moisture resistance<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\">Weight<\/td>\r\n<td style=\"text-align: center\">Heavier (robust construction for impact loads)<\/td>\r\n<td style=\"text-align: center\">Generally lighter (lower structural demand)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<table style=\"border-collapse: collapse;width: 100%\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 50%\"><img class=\"aligncenter wp-image-8350 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-1.46.webp\" alt=\"T-19A Rotary Tiller Gearbox 1-1.46\" width=\"800\" height=\"800\" \/><\/td>\r\n<td style=\"width: 50%\"><img class=\"aligncenter wp-image-8073 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/0_Fertilizer-Spreader-Gearbox-5.webp\" alt=\"Fertilizer Spreader Gearbox\" width=\"1000\" height=\"1000\" \/><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 50%;text-align: center\"><strong>Rotary Tiller Gearbox\u00a0<\/strong><\/td>\r\n<td style=\"width: 50%;text-align: center\"><strong>Fertilizer Spreader Gearbox<\/strong><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h2>Rotary Cultivator Gearbox and Agricultural PTO Shaft<\/h2>\r\nRotary cultivator gearboxes are essential components in agricultural machinery, transferring power from the tractor's PTO or engine to the tiller rotor while ensuring consistent soil cultivation performance. The internal gear set adjusts speed and torque to handle varying soil conditions, and the heavy-duty construction ensures long-term durability across hundreds or thousands of hours of field operation. In any rotary tiller installation, the gearbox sits at the critical junction between the PTO driveline and the implement's working components, converting the tractor's rotational output into the specific speed and torque combination that the tiller blades need to perform effective soil cultivation.\r\n\r\nThe agricultural PTO shaft for a rotary tiller functions as the critical driveline that transmits mechanical power from a tractor's rear output directly to the implement's gearbox input. This shaft typically consists of two telescoping halves connected by universal joints at each end, allowing for angular misalignment and length changes as the tiller follows the tractor over uneven terrain. The inner half slides within the outer half to accommodate the changing distance between the tractor and the implement during turns, lifts, and transport. Without a properly sized and maintained PTO shaft, the gearbox cannot receive the consistent power input it needs to drive the rotor at the correct speed.\r\n\r\nThe PTO shaft and the rotary tiller gearbox form a complete power transmission pathway from the tractor engine to the soil-engaging blades. The tractor's PTO stub shaft drives the driveline shaft at 540 RPM (or 1000 RPM, depending on the tractor configuration), and the driveline shaft delivers that rotation to the gearbox input spline. Inside the gearbox, the gear set reduces the speed and increases the torque according to its ratio (1:1.84 in the case of the T-19A), and the output shaft then drives the tiller rotor. The universal joints in the PTO shaft compensate for the angular offset between the tractor's PTO height and the gearbox input position, while the telescoping section adjusts for distance changes during three-point hitch operation.\r\n\r\nFor the T-19A gearbox to perform correctly, the <a href=\"https:\/\/korea-transmission.com\/pto-shaft-for-rotary-tiller\/\"><strong>PTO driveline shaft<\/strong><\/a> must match several critical parameters. The shaft's implement-end yoke must have a 1-3\/8 inch 6-spline bore that fits the gearbox input shaft precisely. The shaft's torque rating must equal or exceed the gearbox's 20 HP \/ 137 N\u00b7m capacity to prevent driveline failure under load. The shaft length (collapsed and extended) must suit the distance between the tractor PTO stub and the gearbox input when the tiller is in working position. Universal joint angles should remain below the manufacturer's recommended maximum (typically 25 to 30 degrees) to prevent vibration, accelerated wear, and power loss through the driveline. An overload protection device, such as a shear bolt or friction clutch built into the PTO shaft assembly, provides an additional layer of safety for the gearbox.\r\n\r\nBoth the PTO shaft and the gearbox for rotary cultivator require regular maintenance to remain reliable. The PTO shaft needs periodic greasing of its universal joints and telescoping section, inspection of safety shields, and verification that the yoke splines are not worn or damaged. The gearbox requires oil level checks before each use, scheduled oil changes (first at 50 to 70 hours, then every 500 hours or annually), and inspection of the shaft seals for leakage. When either component shows signs of wear, vibration, or abnormal noise, both should be inspected as a system rather than individually, since a problem in one directly affects the other. CMN Transmission supplies both rotary tiller gearboxes and compatible PTO shafts to provide a matched drivetrain solution for your equipment.\r\n<h2><img class=\"aligncenter wp-image-6898 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-Farm-Maxx-Rotary-Tiller.webp\" alt=\"PTO Shaft for Farm-Maxx Rotary Tiller\" width=\"800\" height=\"800\" \/><\/h2>\r\n<h2>Why Choose CMN Transmission's Rotary Tiller Gearboxes?<\/h2>\r\nKorea CMN Transmission Co., Ltd. was established in 2000 and is headquartered in Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, South Korea. With more than 100 factory employees dedicated to research, development, manufacturing, sales, and after-sales service, CMN Transmission has grown over the past two decades into a trusted name in the global agricultural gearbox industry, exporting to over 60 countries across North America, South America, Europe, Asia, Africa, and Oceania.\r\n\r\nOur product range covers nearly one thousand gearbox specifications across a comprehensive catalog of agricultural power transmission equipment. This includes rotary tiller gearboxes, rotary cutter gearboxes, feed mixer gearboxes, rotary mower gearboxes, fertilizer spreader gearboxes, flail mower gearboxes, post hole digger gearboxes, round baler gearboxes, square baler gearboxes, disc mower gearboxes, center pivot irrigation gearboxes, hydraulic drive gearboxes, silage machine gearboxes, orchard sprayer gearboxes, rotary rake gearboxes, combine harvester gearboxes, grain storage gearboxes, grain transportation gearboxes, corn header gearboxes, cutting bar gearboxes, poultry feeding gearboxes, and custom agricultural gearboxes built to customer specifications. Our additional product lines include PTO shafts, universal joints, yokes, tubes, torque limiters, covers, adapters, couplings, bearings, blades, chains, and sprockets.\r\n\r\nWith an annual production quantity exceeding 500,000 units, CMN Transmission consistently delivers reliable performance and long-term durability to global OEM manufacturers and parts distributors. Every product is manufactured under CE and ISO 9001 certified quality management systems, ensuring consistent quality control from raw material sourcing through final assembly, testing, and packaging.\r\n<h3>Key Advantages<\/h3>\r\n<ul>\r\n \t<li><strong>Two Decades of Specialized Manufacturing Experience<\/strong>\r\nSince 2000, CMN has focused exclusively on agricultural gearbox production. This long track record means our engineering team has solved thousands of application-specific challenges across diverse global markets, soil conditions, and equipment platforms. Every lesson learned from 25 years of field feedback is built into our current product designs, including the T-19A.<\/li>\r\n \t<li><strong>Complete Custom Production Capability<\/strong>\r\nWe support custom production based on customer drawings, existing gearbox samples, or detailed technical specifications. Whether you need a modified gear ratio, an alternative shaft configuration, a non-standard mounting arrangement, or a completely new gearbox design, our in-house engineering and machining capabilities can deliver production-ready prototypes and volume orders to your exact requirements.<\/li>\r\n \t<li><strong>Global Logistics and Responsive Support<\/strong>\r\nOur products are exported to the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, China, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and dozens of other markets. Our logistics team has extensive experience with international shipping, customs documentation, and packaging standards for agricultural machinery components, ensuring that your order arrives in good condition regardless of destination.<\/li>\r\n<\/ul>\r\nWhen you choose CMN Transmission as your rotary tiller gearbox manufacturer and supplier, you gain a production partner with the technical depth, manufacturing scale, quality certifications, and global logistics infrastructure to support your agricultural equipment business reliably over the long term. Whether you are an OEM building new tillers, a parts distributor stocking replacement gearboxes, or an end-user farmer who needs a single replacement unit, CMN has the product range and support structure to meet your needs. Contact us today to discuss your requirements.\r\n\r\n<img class=\"aligncenter wp-image-8411 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/0_Rotary-Tiller-Gearbox-Manufacturers-1.webp\" alt=\"Rotary Tiller Gearbox Manufacturers\" width=\"1200\" height=\"880\" \/>\r\n<h2>Frequently Asked Questions<\/h2>\r\n<strong>Q: Is the CMN T-19A a direct fit replacement for the original Comer T-19A gearbox?<\/strong>\r\nA: Yes. The CMN T-19A is engineered as a dimensional and functional replacement for the Comer T-19A rotary tiller gearbox. It shares the same 1:1.84 gear ratio, 1-3\/8 inch 6-spline input and output shaft connections, mounting bolt patterns, and housing envelope dimensions. In most cases, the replacement can be bolted directly into the same frame position as the original unit without any modifications to the tiller or PTO driveline.\r\n\r\n<strong>Q: What type of oil should I use in the T-19A rotary tiller gearbox?<\/strong>\r\nA: The T-19A is designed to operate with SAE 80W-90 EP (Extreme Pressure) gear oil. This multi-grade viscosity provides adequate film strength across both cold starts and high operating temperatures typical of agricultural field work. The gearbox holds a maximum of 0.9 liters. Fill the oil through the designated oil plug until the level reaches the bottom of the fill hole with the gearbox in its installed position. Check the rotary tiller gearbox oil level before every use.\r\n\r\n<strong>Q: How often should I change the oil in a rotary tiller gearbox?<\/strong>\r\nA: Perform the first oil change after 50 to 70 hours of operation to remove break-in particles from new gears and bearings. After the initial change, drain and replace the oil every 500 to 700 operating hours, or at least once per year if operating hours are lower. Always inspect the drained oil for metal particles, discoloration, or water contamination, as these signs may indicate developing internal wear or seal failure that requires attention.\r\n\r\n<strong>Q: What is the maximum horsepower rating for the T-19A gearbox?<\/strong>\r\nA: The T-19A is rated for a maximum input power of 14.7 kW, which is equivalent to 20 HP. This rating applies at the standard PTO input speed of 540 RPM. Operating the gearbox above this power rating will accelerate gear and bearing wear and may lead to premature failure. If your tiller application requires higher power capacity, contact CMN Transmission for a larger model recommendation.\r\n\r\n<strong>Q: Can I use the T-19A gearbox with a 1000 RPM PTO tractor?<\/strong>\r\nA: The T-19A is rated for a maximum input speed of 540 RPM. Operating the gearbox at 1000 RPM would exceed the designed input speed and create significantly higher internal forces, which could lead to overheating, accelerated wear, and potential gear failure. If you need a rotary tiller gearbox compatible with a 1000 RPM PTO, please contact our engineering team to discuss models with the appropriate speed rating and gear ratio for your application.\r\n\r\n<strong>Q: Does the T-19A gearbox come pre-filled with oil?<\/strong>\r\nA: No. All CMN Transmission gearboxes are shipped without oil to prevent leakage during transport and to allow the customer to select their preferred brand of SAE 80W-90 gear oil. Before first use, fill the gearbox through the oil plug to the specified level (0.9 liters maximum). Running the gearbox without oil, even briefly, will cause immediate and severe damage to the gears and bearings that is not covered by warranty.\r\n\r\n<strong>Q: What is the output speed of the T-19A gearbox at 540 RPM input?<\/strong>\r\nA: With a gear ratio of 1:1.84 and a standard input of 540 RPM, the output shaft of the T-19A rotates at approximately 293 RPM. This reduced output speed is accompanied by a proportional increase in torque, delivering up to 137 N\u00b7m at the output shaft. The exact output speed may vary slightly depending on load conditions and the manufacturing tolerances of the gear tooth count.\r\n\r\n<strong>Q: Are replacement parts available for the T-19A rotary tiller gearbox?<\/strong>\r\nA: Yes. CMN Transmission supplies individual rotary tiller gearbox parts including gear sets, input and output shafts, bearings, oil seals, gaskets, oil plugs, and housing components for the T-19A model. If you need a specific replacement part, provide the gearbox model number and a description or photo of the component you need, and our parts team will confirm availability, pricing, and lead time for your order.\r\n\r\n<strong>Q: Can CMN Transmission supply rotary tiller gearboxes with different ratios?<\/strong>\r\nA: Yes. In addition to the T-19A 1:1.84, CMN also manufactures the T-19A in 1:1 ratio and 1:1.46 ratio variants. We also produce other agricultural gearbox models covering different power classes, shaft sizes, and mounting configurations. For custom ratio requirements not listed in our standard catalog, our engineering team can evaluate feasibility and provide a quotation for modified or custom-built units.\r\n\r\n<strong>Q: Where can I buy a T-19A rotary tiller gearbox for sale?<\/strong>\r\nA: The T-19A and other rotary tiller gearbox for sale models are available directly from CMN Transmission through our website and sales team. We supply individual units for end-user replacement needs as well as volume orders for OEM manufacturers and agricultural parts distributors. To request pricing, lead time, and shipping options for your location, please visit our Contact Us page or send an inquiry through the quote request form on this product page.\r\n\r\n<img class=\"aligncenter wp-image-8353 size-full\" src=\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/10\/T-19A-Rotary-Tiller-Gearbox-1-2.16.webp\" alt=\"T-19A Rotary Tiller Gearbox 1-2.16\" width=\"800\" height=\"800\" \/>\r\n<h2>Customer Reviews<\/h2>\r\n<strong>Mike Thompson, Row Crop Farming, United States<\/strong>\r\n\"We farm about 800 acres of corn and soybeans in central Illinois and run a 4-row rotary tiller behind our 45 HP utility tractor. The original Comer T-19A gearbox had been leaking oil for two seasons, and getting a genuine replacement was going to take weeks. We ordered the CMN T-19A with the 1:1.84 ratio, and the spline fit was identical to the old one. Swapped it out on a Saturday morning, filled it with 80W-90 as recommended, and we were back tilling by lunchtime. After about 340 hours of use so far, no leaks, no noise, runs just like it should. The price was also very reasonable compared to the OEM part.\"\r\n\r\n<strong>James Kowalski, Vegetable Production, Canada<\/strong>\r\n\"I operate a small vegetable farm in Ontario and use a compact rotary tiller for seedbed preparation every spring and fall. When the gearbox failed mid-season last year, I needed a quick turnaround. CMN shipped the T-19A replacement to Toronto within about 10 business days, well packed with foam padding inside the box. The 1-3\/8 six-spline shafts matched my existing PTO line perfectly. I did the first oil change at 60 hours as instructed, and the oil came out clean with no metal particles at all. Going into my second season with this unit now and it has been completely trouble-free.\"\r\n\r\n<strong>Santiago Vargas, Grain Farming, Argentina<\/strong>\r\n\"We manage about 1,500 hectares of wheat and corn in the Pampas region and use several multi-row tillers for soil preparation. We replaced three worn Comer gearboxes with CMN T-19A units at the start of this planting season. The shipment arrived in Buenos Aires in solid condition, every unit was properly labeled with the ratio and serial number, and all three spline interfaces matched our existing driveshafts without any modification. After the break-in oil change at 65 hours, the insides were spotless. Very impressed with the build quality considering the price point.\"\r\n\r\n<strong>Ricardo Mendes, Agricultural Parts Distribution, Brazil<\/strong>\r\n\"Our company distributes agricultural spare parts across southern Brazil and we have been sourcing rotary tiller gearbox replacements from CMN for about two years now. The T-19A with the 1:1.84 ratio is one of our most requested items because Comer-equipped tillers are very common in our market. Customer feedback has been consistently positive. The cast iron housing feels substantial, the gear finish is smooth, and we have had zero warranty claims on the batch we received last quarter. CMN's sales team responds quickly and provides clear technical documentation, which helps our warehouse staff verify compatibility before shipping to end users.\"\r\n\r\n<strong>Klaus Bauer, Mixed Farming, Germany<\/strong>\r\n\"We run a mixed farm in Bavaria with about 120 hectares of arable land and 40 hectares of pasture. Our rotary tiller is a 2.5-meter Italian-made unit with a Comer T-19A gearbox that needed replacing after the output seal failed and we ran it too long with low oil. I was a bit hesitant about buying a non-OEM replacement, but after comparing the dimensional drawings and specifications, everything matched. Installation took less than 45 minutes. We have been using it in clay-heavy soil for about 200 hours and the gearbox runs quiet and cool. Good quality product at a fair price.\"\r\n\r\n<strong>Pierre Lefebvre, Specialty Crops, France<\/strong>\r\n\"We grow lavender and sunflowers in the Provence area and rely on a compact tiller for between-row cultivation. The original gearbox on our Italian tiller was 15 years old and had developed a persistent oil leak that we could not fix by replacing seals alone. We ordered the CMN T-19A as a complete replacement. The customer service was excellent during the ordering process, they even confirmed the bolt pattern compatibility from our photos before shipping. Delivery to France took about two weeks. The unit bolted right in and has been running smoothly for one full growing season now. I appreciated that they included detailed oil-change instructions with the gearbox.\"\r\n\r\n<strong>Somchai Phetcharoen, Rice Production, Thailand<\/strong>\r\n\"Our rice farming operation in Chiang Mai province uses rotary tillers extensively for paddy field preparation. The soil here is very wet and sticky during the monsoon season, so the gearbox takes a lot of punishment. We switched to the CMN T-19A after our previous replacement gearbox from another supplier failed within six months. The CMN unit has now completed a full wet season and dry season cycle, roughly 500 hours of heavy use, and we just did the second oil change. Everything inside looks normal, no metal filings, seals are holding well despite the constant mud exposure. Very happy with this purchase.\"\r\n\r\n<strong>Rajesh Patil, Vegetable Farming, India<\/strong>\r\n\"We have a 40-acre market garden near Pune where we grow onions, tomatoes, and leafy greens for local wholesale markets. The tiller is essential for bed preparation, and when our old gearbox broke a gear tooth, we could not afford to wait. CMN arranged an air freight option that got the T-19A to us in about a week. The 1:1.84 ratio matched our tiller perfectly, and the shaft splines fit without any machining. I also liked that the gearbox came with a label showing the oil type and fill capacity right on the housing. We have been running it for about 150 hours now with no issues at all. Will order again when we need more spare parts.\"\r\n\r\n<strong>Craig Henderson, Agricultural Contracting, Australia<\/strong>\r\n\"I run a contracting business in Queensland doing soil preparation, pasture renovation, and land clearing for other farmers. Our tillers see a lot of rough country, red clay soils with rocks, and long working days. We ordered two CMN T-19A gearboxes as spares and have already installed one after the Comer original wore out on our busiest machine. The replacement has been running for about three months through some very demanding ground conditions, and I am genuinely impressed with how it has held up. The cast iron housing is thick and well-finished, and the gears are noticeably quieter than the worn unit we pulled out. Good value for the money, and shipping to Australia was straightforward.\"","_et_gb_content_width":""},"product_brand":[],"product_cat":[320],"product_tag":[326,329,327,325,322,323,321,332,330,333,331,324,328],"class_list":{"0":"post-8409","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rotary-tiller-gearbox","7":"product_tag-agricultural-gearbox","8":"product_tag-agricultural-gearbox-for-rotary-tiller","9":"product_tag-agricultural-gearbox-for-rotavator","10":"product_tag-gearbox-for-rotary-cultivator","11":"product_tag-gearbox-for-rotary-tiller","12":"product_tag-rotary-cultivator-gearbox","13":"product_tag-rotary-tiller-gearbox","14":"product_tag-rotary-tiller-gearbox-for-sale","15":"product_tag-rotary-tiller-gearbox-manufacturers","16":"product_tag-rotary-tiller-gearbox-price","17":"product_tag-rotary-tiller-gearbox-suppliers","18":"product_tag-rotavator-gearbox","19":"product_tag-tiller-gearbox","21":"first","22":"instock","23":"shipping-taxable","24":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product\/8409","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/comments?post=8409"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media\/8351"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media?parent=8409"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_brand?post=8409"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_cat?post=8409"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_tag?post=8409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}