{"id":7919,"date":"2026-09-01T09:39:35","date_gmt":"2026-09-01T09:39:35","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=7919"},"modified":"2026-09-03T05:33:50","modified_gmt":"2026-09-03T05:33:50","slug":"rc-33-rotary-cutter-gearbox-replacement-for-omni-rc-33-gearbox","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/fr\/produit\/rc-33-rotary-cutter-gearbox-replacement-for-omni-rc-33-gearbox\/","title":{"rendered":"Bo\u00eete de vitesses de remplacement pour broyeur rotatif RC-33 Omni RC-33"},"content":{"rendered":"

The RC-33 Rotary Cutter Gearbox Replacement for Omni RC-33 Gearbox is a heavy-duty power transmission unit engineered exclusively for agricultural machinery. Designed to drive rotary blades in demanding field operations, this gearbox for rotary cutter excels at grass cutting, straw crushing, and brush clearing across a wide range of terrain conditions. Its core function is to transform the raw rotational output of the tractor PTO shaft into precisely managed, high-torque mechanical energy that blade assemblies demand. Whether you are running a three-point-hitch finishing mower across a flat paddock or pushing a rotary slasher through dense roadside scrub, the RC-33 delivers consistent, load-stable power. The agricultural gearbox is built to tolerances that protect the blade carrier and tractor driveline alike, absorbing shock loads without transmitting them back into the machine.<\/p>\n

Through a precision bevel gear set, the RC-33 converts the standard 540 or 1,000 RPM input from the tractor PTO into lower-speed, higher-torque output ideally matched to rotary cutting demands. Three available rotary cutter gearbox ratio options to 1:1.47, 1:1.71, and 1:1.93 to let operators select blade speed to suit crop density, vegetation type, or field gradient. The unit maintains stable power delivery even as load fluctuates during cutting cycles, ensuring clean cuts through thick corn stubble, overgrown weeds, or woody shrub stalks. This rotary mower gearbox has been validated for use on finishing mowers, rotary cutters, and rotary slashers, making it a versatile and reliable component for professional farming operations, municipal mowing contractors, and orchard management teams worldwide.<\/p>\n

\"Bo\u00eete<\/p>\n

Sp\u00e9cifications du produit<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Mod\u00e8le:<\/td>\nBo\u00eete de vitesses RC-33<\/td>\n<\/tr>\n
Couple :<\/td>\n2 800 \u2013 4 667 lb-po
\n(316 \u2013 527 Nm.)<\/td>\n<\/tr>\n
Proportions :<\/td>\n1:1.47, 1:1.71, 1:1.93<\/td>\n<\/tr>\n
Type d'\u00e9quipement :<\/td>\nBiseau<\/td>\n<\/tr>\n
Type de joint :<\/td>\nTriple l\u00e8vre \u00e0 ressort<\/td>\n<\/tr>\n
Type de roulement :<\/td>\nBoule \u00e0 rainures profondes<\/td>\n<\/tr>\n
Capacit\u00e9 en huile :<\/td>\n23 oz.
\n(0,68 L)<\/td>\n<\/tr>\n
Poids:<\/td>\n51 livres
\n(23.1 kg)<\/td>\n<\/tr>\n
Applications :<\/td>\nTondeuses de finition
\nCoupeurs rotatifs
\nBroyeurs rotatifs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

RC-33 Rotary Cutter Gearbox Dimensions<\/h2>\n

\"Dimensions<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Mod\u00e8le<\/th>\nMaximum
\nPoids
\nde l'unit\u00e9<\/th>\n		CL \u00e0 travers
\nCapuchon
\nUN<\/th>\n		CL \u00e0
\nBride
\nB<\/th>\n		Bride \u00e0
\nHub pilote
\nC<\/th>\n		Hub pilote
\nDiam\u00e8tre
\nH<\/th>\n		Diam\u00e8tre de la bride
\nD1<\/th>\n		Trou de boulon
\nMod\u00e8le
\nE1<\/th>\n		Trous de fixation
\nF1<\/th>\n		Bride carr\u00e9e
\nTaille
\nD2<\/th>\n		Trou de boulon
\nMod\u00e8le
\nE2<\/th>\n		Trous de fixation
\nF2<\/th>\n<\/tr>\n
kg<\/th>\nkg<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\ndans<\/th>\nmm<\/th>\n<\/tr>\n<\/thead>\n
RC-20<\/td>\n34<\/td>\n15<\/td>\n3.0<\/td>\n76<\/td>\n6.5<\/td>\n165<\/td>\n2.40<\/td>\n61.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n6.18<\/td>\n157<\/td>\n6.8<\/td>\n171.5<\/td>\n(4) 0.67<\/td>\n(4) 17<\/td>\n<\/tr>\n
RC-27<\/td>\n47<\/td>\n21<\/td>\n3.5<\/td>\n88<\/td>\n6.4<\/td>\n164<\/td>\n2.40<\/td>\n61.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n6.18<\/td>\n157<\/td>\n6.8<\/td>\n171.5<\/td>\n(4) 0.67<\/td>\n(4) 17<\/td>\n<\/tr>\n
RC-30<\/td>\n51<\/td>\n23<\/td>\n3.9<\/td>\n100<\/td>\n6.4<\/td>\n164<\/td>\n3.30<\/td>\n84.0<\/td>\n2.5<\/td>\n63.5<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n6.89<\/td>\n175<\/td>\n6.8<\/td>\n171.5<\/td>\n(4) 0.67<\/td>\n(4) 17<\/td>\n<\/tr>\n
RC-51<\/td>\n56<\/td>\n25<\/td>\n3.7<\/td>\n94<\/td>\n6.4<\/td>\n164<\/td>\n3.50<\/td>\n88.9<\/td>\n2.5<\/td>\n63.5<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n6.89<\/td>\n175<\/td>\n6.8<\/td>\n171.5<\/td>\n(4) 0.67<\/td>\n(4) 17<\/td>\n<\/tr>\n
RC-61<\/td>\n81<\/td>\n37<\/td>\n4.2<\/td>\n107<\/td>\n7.2<\/td>\n183<\/td>\n3.50<\/td>\n88.9<\/td>\n2.5<\/td>\n63.5<\/td>\n9.5<\/td>\n242.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(4) 0.787<\/td>\n(4) 20<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-71<\/td>\n83<\/td>\n38<\/td>\n4.2<\/td>\n107<\/td>\n7.2<\/td>\n183<\/td>\n3.50<\/td>\n88.9<\/td>\n2.5<\/td>\n63.5<\/td>\n9.5<\/td>\n242.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(4) 0.787<\/td>\n(4) 20<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-81<\/td>\n98<\/td>\n45<\/td>\n4.6<\/td>\n116<\/td>\n11.0<\/td>\n279<\/td>\n3.50<\/td>\n88.9<\/td>\n2.5<\/td>\n63.5<\/td>\n9.6<\/td>\n245.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(4) 0.787<\/td>\n(4) 20<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-100<\/td>\n96<\/td>\n44<\/td>\n4.8<\/td>\n121<\/td>\n7.1<\/td>\n180<\/td>\n3.78<\/td>\n96.0<\/td>\n2.5<\/td>\n63.5<\/td>\n9.4<\/td>\n240.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(4) 0.787<\/td>\n(4) 20<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-130S<\/td>\n109<\/td>\n49<\/td>\n5.1<\/td>\n130<\/td>\n7.1<\/td>\n180<\/td>\n4.00<\/td>\n102.0<\/td>\n2.9<\/td>\n73.0<\/td>\n9.8<\/td>\n250.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(6) 0.807<\/td>\n(6) 21<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-130L<\/td>\n120<\/td>\n54<\/td>\n5.1<\/td>\n130<\/td>\n7.1<\/td>\n180<\/td>\n7.20<\/td>\n184.0<\/td>\n3.8<\/td>\n96.0<\/td>\n9.8<\/td>\n250.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(6) 0.807<\/td>\n(6) 21<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-145<\/td>\n110<\/td>\n50<\/td>\n5.6<\/td>\n142<\/td>\n8.9<\/td>\n225<\/td>\n8.05<\/td>\n204.5<\/td>\n3.8<\/td>\n96.0<\/td>\n10.2<\/td>\n260.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(6) 0.807<\/td>\n(6) 21<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-150L<\/td>\n145<\/td>\n66<\/td>\n5.1<\/td>\n130<\/td>\n11.0<\/td>\n280<\/td>\n7.20<\/td>\n184.0<\/td>\n3.8<\/td>\n96.0<\/td>\n9.8<\/td>\n250.0<\/td>\n8.0<\/td>\n203.2<\/td>\n(6) 0.807<\/td>\n(6) 21<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
RC-200<\/td>\n220<\/td>\n100<\/td>\n6.4<\/td>\n162<\/td>\n9.5<\/td>\n241<\/td>\n8.00<\/td>\n203.0<\/td>\n5.3<\/td>\n135.0<\/td>\n11.8<\/td>\n300.0<\/td>\n10<\/td>\n254.0<\/td>\n(6) 0.905<\/td>\n(6) 23<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Key Features of RC-33 Rotary Cutter Gearbox<\/h2>\n

1. Prise de force du tracteur \u00e0 entra\u00eenement direct
\nLe RC-33 se connecte directement \u00e0 la prise de force du tracteur et est enti\u00e8rement compatible avec les vitesses de sortie standard de 540 et 1\u00a0000 tr\/min, couvrant ainsi la grande majorit\u00e9 des tracteurs agricoles vendus dans le monde. L'interface de couplage \u00e0 changement rapide ne n\u00e9cessite aucun outil sp\u00e9cifique\u00a0: les op\u00e9rateurs peuvent installer ou d\u00e9sinstaller la transmission en quelques minutes, r\u00e9duisant ainsi les temps d'arr\u00eat lors des changements de production. La configuration des cannelures de l'arbre d'entr\u00e9e est conforme aux dimensions standard du secteur, garantissant une large compatibilit\u00e9 avec les principales marques de tracteurs, des tracteurs utilitaires compacts aux grandes machines pour cultures en rangs. Cette connexion \u00ab\u00a0plug-and-play\u00a0\u00bb simplifie la transmission et r\u00e9duit les risques de panne par rapport aux transmissions par courroie ou par cha\u00eene.<\/p>\n

2. Multi-Ratio Bevel Gear Set
\nThree available rotary cutter gearbox ratio options to 1:1.47, 1:1.71, and 1:1.93 to give operators genuine flexibility to match blade tip speed to the vegetation being cut. Lighter grass and cover crop applications benefit from higher blade speed ratios to produce a clean, even finish. Dense weed mats, brush, or heavy straw stubble often require a slower, higher-torque ratio to avoid stalling the implement. The precision bevel gearing is forged from alloy steel and machine-cut to tight tolerances, producing smooth, quiet operation and reducing heat buildup during extended cutting runs. This adaptability makes the RC-33 equally at home on a 40 hp rotary cutter gearbox application as on 75 hp or 100 hp rotary cutter gearbox setups.<\/p>\n

3. Triple Lip Spring-Loaded Seal System
\nOne of the most critical wear points in any finishing mower gearbox is the shaft seal. The RC-33 uses a triple lip, spring-loaded seal assembly on all rotating shaft exits. The three-lip architecture creates progressive contamination barriers: the outermost lip blocks mud, water, and plant debris; the middle lip catches any moisture that bypasses the first; the innermost lip retains gear oil within the housing. The spring loading ensures constant radial pressure on the shaft surface even as the seal lip wears over time, maintaining integrity far longer than single or double-lip alternatives. This dramatically reduces the frequency of rotary cutter gearbox repair calls related to oil loss and bearing contamination.<\/p>\n

4. Field-Accessible Lubrication Ports
\nProper rotary cutter gearbox oil maintenance is the single most important factor in gearbox longevity. The RC-33 features external oil fill and drain ports positioned for easy access without removing the gearbox from the machine. The fill port is located at a height that makes gravity-fed oil changes straightforward in the field, while the drain plug is positioned to allow complete oil evacuation without tilting the unit. Oil capacity is 23 oz. (0.68 L), and the unit accepts both mineral and synthetic gear oils in accordance with application requirements. Clear guidance markings on the housing assist operators in maintaining the correct rotary cutter gearbox oil level without the need for a dipstick or special gauge tool.<\/p>\n

5. High-Strength Ductile Iron Housing
\nLe carter de bo\u00eete de vitesses est moul\u00e9 en fonte ductile, un mat\u00e9riau choisi pour sa combinaison de r\u00e9sistance \u00e0 la compression et d'absorption des chocs. En milieu agricole, les carters de bo\u00eete de vitesses sont r\u00e9guli\u00e8rement expos\u00e9s aux pierres, aux souches et aux impacts qui fissureraient la fonte grise cassante. La microstructure en graphite nodulaire de la fonte ductile lui permet de fl\u00e9chir l\u00e9g\u00e8rement sous l'impact au lieu de se fracturer, pr\u00e9servant ainsi l'int\u00e9grit\u00e9 du carter m\u00eame apr\u00e8s plusieurs saisons d'utilisation intensive. L'ext\u00e9rieur re\u00e7oit de s\u00e9rie une couche d'appr\u00eat antirouille rouge, formant une barri\u00e8re anticorrosion initiale contre la boue, l'eau, les r\u00e9sidus d'engrais et la s\u00e8ve qui s'accumulent lors des travaux agricoles. D'autres rev\u00eatements sont disponibles pour les utilisateurs en zones c\u00f4ti\u00e8res ou \u00e0 forte humidit\u00e9.<\/p>\n

6. Overload Protection and Safety Mechanism
\nWhen blade assemblies encounter buried rocks, concrete debris, or heavy stumps at full operating speed, the torque spike transmitted back through the driveline can reach multiples of rated load in milliseconds. The RC-33 integrates an overload protection mechanism, available as an optional free-wheel clutch, that disconnects the power path before peak torque can damage the gear set or the tractor PTO. The pressure relief plug is supplied as standard equipment, preventing housing over-pressurization during temperature cycling in sealed oil-bath operation. These safety features reduce the likelihood of catastrophic gearbox failure and protect the broader machine investment, keeping costly rotary cutter gearbox rebuild events to a minimum throughout the service life of the implement.<\/p>\n

\"Bo\u00eete<\/p>\n

How Does the Rotary Cutter Gearbox Work<\/h2>\n

The rotary cutter gearbox sits at the mechanical heart of any rotary mower or cutter implement. Its job is deceptively simple to describe but technically demanding to execute reliably across thousands of hours of field operation: receive rotational power from the tractor PTO shaft, change its direction by 90 degrees, adjust its speed and torque characteristics, and deliver clean, consistent drive power to the blade spindle assembly below.<\/p>\n

La puissance est transmise au RC-33 par l'arbre d'entr\u00e9e, directement reli\u00e9 \u00e0 la prise de force (PDF). La PDF du tracteur fonctionne \u00e0 540 ou 1\u00a0000 tr\/min selon le mode de fonctionnement s\u00e9lectionn\u00e9 et le mod\u00e8le du tracteur. Ces vitesses sont trop \u00e9lev\u00e9es et le couple trop faible pour une application directe sur une lame rotative lourde en conditions de travail au champ. Le train d'engrenages coniques int\u00e9gr\u00e9 au carter assure simultan\u00e9ment la r\u00e9duction de vitesse et l'inversion du sens de rotation. L'engrenage conique d'entr\u00e9e s'engr\u00e8ne \u00e0 angle droit avec l'engrenage conique de sortie, redirigeant la rotation de l'horizontale (axe de la PDF) \u00e0 la verticale (axe de la broche de la lame). Par ailleurs, le rapport de r\u00e9duction du r\u00e9ducteur de la faucheuse rotative est s\u00e9lectionnable entre 1:1,47, 1:1,71 et 1:1,93 sur cette s\u00e9rie, afin de multiplier le couple tout en r\u00e9duisant la vitesse. On obtient ainsi une plage de couple de sortie de 316 \u00e0 527 Nm (2\u00a0800 \u00e0 4\u00a0667 lb-in), parfaitement adapt\u00e9e aux exigences de la coupe de v\u00e9g\u00e9tation dense.<\/p>\n

The gear set is precision forged from alloy steel and machine-cut to tight tooth-profile tolerances. This precision minimizes sliding friction at tooth contact points, reducing heat generation and gear wear simultaneously. The gears and bearings run partially submerged in the oil bath contained within the sealed housing, ensuring continuous lubrication of all contact surfaces without the need for an external oil pump or active lubrication system.<\/p>\n

Load management is critical in a gearbox for rotary cutter because field conditions change moment to moment. A blade moving through light grass encounters minimal resistance, but the same blade striking a dense clump of mature weeds or a thick patch of corn stalks experiences an instantaneous torque demand many times higher. The RC-33 is designed with sufficient housing rigidity and bearing preload to absorb these load spikes without misaligning the gear mesh. Deep groove ball bearings on both input and output shafts maintain shaft alignment under combined radial and axial loads, ensuring the bevel gears remain in their designed contact pattern regardless of cutting load.<\/p>\n

The triple lip spring-loaded seals prevent the oil bath from leaking out while also blocking field contaminants from entering the housing. A pressure relief plug vents any internal pressure build-up caused by thermal expansion of the gear oil during operation, preventing seal extrusion under elevated temperatures. This closed-loop lubrication and sealing system is what makes this agricultural gearbox capable of sustained field duty across seasons with minimal maintenance intervention.<\/p>\n

\"Applications<\/p>\n

Application Areas<\/h2>\n
\n

tonte de l'herbe et broyage de la paille<\/h3>\n

The RC-33 drives rotary blades at calibrated speeds to cut grass, straw, or cover crops such as cornstalks. Operators can select from three gear ratios to control the degree of material fragmentation, producing either coarse pieces for direct incorporation back into the soil or finer particles suited to animal bedding or compost preparation. This dual-purpose capability makes the gearbox an efficient choice for grain and forage farmers running the same implement across varied seasonal tasks.<\/p>\n<\/div>\n

\n

Shrub and Brush Clearing<\/h3>\n

La bo\u00eete de vitesses de cette d\u00e9broussailleuse rotative offre un couple \u00e9lev\u00e9, id\u00e9al pour le d\u00e9broussaillage en bordure de vergers et de bois, le long des cl\u00f4tures et sur les terrains agricoles remis en \u00e9tat. Les tiges ligneuses et les jeunes pousses qui bloqueraient un outil plus l\u00e9ger sont trait\u00e9es avec une force de coupe constante tout au long du passage. La protection contre les surcharges de la bo\u00eete de vitesses emp\u00eache la transmission des \u00e0-coups \u00e0 la prise de force du tracteur lorsque les lames rencontrent des d\u00e9bris v\u00e9g\u00e9taux ou des racines.<\/p>\n<\/div>\n

\n

Pr\u00e9paration des terres agricoles et traitement des chaumes<\/h3>\n

Combined with disc or trailing blade attachments, the RC-33 provides fast and thorough removal of rice stubble, wheat residue, and legume stalks after harvest, leaving fields clear for ploughing or direct seeding operations. Effective stubble management reduces the pest and disease pressure that builds in un-cleared crop residue, particularly in warm, humid growing regions where fungal carry-over between seasons is a significant agronomic risk.<\/p>\n<\/div>\n

\n

Orchard and Vineyard Weed Management<\/h3>\n

The compact housing dimensions of the RC-33 make it well suited for under-canopy orchard mowing and inter-row vineyard management. The\u00a0finishing mower gearbox\u00a0application requires clean, low-profile cutting to avoid damaging low-hanging fruit or training wires. The ratio options allow ground speed and blade speed to be tuned for the target sward height, producing a neat finish rather than tearing or scattering.<\/p>\n<\/div>\n

\n

Roadside and Municipal Vegetation Control<\/h3>\n

Municipal maintenance contractors use rotary cutters equipped with the RC-33 to manage vegetation along roadsides, drainage channels, and public green spaces. The gearbox handles the mixed vegetation to grasses, seedling trees, and invasive weeds to that characterises roadside margins. Its robust sealing protects against the wet and contaminated conditions typical of ditches and embankment work, while the heavy-duty housing withstands the higher debris strike frequency encountered when mowing near road surfaces.<\/p>\n<\/div>\n

\n

Wetland and Steep-Slope Operations<\/h3>\n

The RC-33 oil-bath lubrication system maintains adequate gear and bearing lubrication across a range of operating angles. This makes the gearbox viable for cutting operations on hillsides, terraced farmland, and wetland margins where the implement is not always operating on a level plane. The internal oil distribution is designed to prevent bearing starvation even when the gearbox is tilted at angles encountered during contour cutting or wetland vegetation management.<\/p>\n<\/div>\n

\n

Forage Crop Preparation<\/h3>\n

Dairy and beef livestock operations use rotary cutters to prepare standing forage crops ahead of baling or silage harvesting. The RC-33 provides the torque needed to cut and lay down mature grass swards at the rates demanded by large-scale forage enterprises. Consistent cutting height, achieved through the stable torque output across variable sward density, helps ensure uniform wilting and drying, which is critical to producing high-quality, fermentable silage or hay bale material with predictable feed value.<\/p>\n<\/div>\n

\n

Land Reclamation and Site Preparation<\/h3>\n

Pour les projets de r\u00e9habilitation de terres o\u00f9 des parcelles abandonn\u00e9es ou envahies par la v\u00e9g\u00e9tation sont remises en culture ou destin\u00e9es \u00e0 un usage agricole ou paysager productif, la d\u00e9broussailleuse RC-33, en configuration de broyeur rotatif robuste, assure le d\u00e9broussaillage initial. Les peuplements mixtes d'herbes hautes, de foug\u00e8res, de ronces et de jeunes arbres, caract\u00e9ristiques des terrains n\u00e9glig\u00e9s, sont \u00e9limin\u00e9s en un seul passage, permettant ainsi les op\u00e9rations de labour ou de semis ult\u00e9rieures. La capacit\u00e9 de r\u00e9sistance aux chocs et la protection contre les surcharges de la bo\u00eete de vitesses sont particuli\u00e8rement pr\u00e9cieuses dans cet environnement d'application riche en d\u00e9bris v\u00e9g\u00e9taux.<\/p>\n<\/div>\n

\"Applications<\/p>\n

RC-33 Rotary Cutter Gearbox Parts<\/h2>\n

Carter de bo\u00eete de vitesses
\nCast from ductile iron for the RC-33, the housing encloses all rotating components and serves as the primary structural member of the entire assembly. It must withstand sustained internal oil pressure, vibration from blade imbalance, and external impact from thrown debris. Precision-bored bearing seats within the housing maintain shaft alignment under all load conditions. Inspecting the housing for cracks, particularly around the flange bolt holes and the input shaft boss, is a routine part of any rotary cutter gearbox repair assessment.<\/p>\n

Engrenages coniques
\nThe matched bevel gear pair is the core power transmission element. On the RC-33, forged alloy steel blanks are precision machine cut to achieve the rated tooth geometry and surface finish. The 90-degree shaft angle configuration is achieved by the bevel geometry, while the ratio between the input and output gear tooth counts sets the speed and torque multiplication. Gear tooth condition, including pitting, spalling, and contact pattern displacement, is the primary indicator of internal wear during a gearbox inspection.<\/p>\n

Arbre d'entr\u00e9e
\nMachined from carburized alloy steel, the input shaft accepts the PTO driveline at one end and carries the input bevel gear at the other. The shaft is case-hardened to resist wear at the spline interface, which experiences repetitive engagement and disengagement cycles as the implement is attached and detached. Standard spline configurations are used throughout, ensuring interchangeability with OEM replacement shafts when reconditioning as part of a rotary cutter gearbox rebuild program.<\/p>\n

arbre de sortie
\nThe output shaft extends downward from the housing bottom to the blade carrier bar. It must transmit full rated torque to up to 4,667 lb-in on the RC-33 to while simultaneously resisting the bending moments imposed by offset blade hub loading. Shaft extensions can be splined, keyed, or drilled for pin-drive configurations depending on the blade carrier design. Multiple shaft extension options are available for specialized applications, making the RC-33 adaptable across different bo\u00eete de vitesses pour coupeuse rotative<\/strong><\/a> for sale configurations in the market.<\/p>\n

Roulements \u00e0 billes \u00e0 gorge profonde
\nDeep groove ball bearings support both input and output shafts in the RC-33. Their capacity to handle combined radial and axial loads makes them well suited to the bevel gear reaction forces inherent in right-angle drive gearboxes. Bearing preload settings are established during assembly to maintain bevel gear mesh position under load. When bearings begin to fail to typically detected as elevated operating temperature, increased noise, or perceptible shaft play to prompt replacement prevents progressive gear surface damage that escalates repair cost significantly.<\/p>\n

Triple Lip Oil Seals
\nOil seals are fitted at every shaft exit point on the housing. The RC-33 uses triple lip, spring-loaded seals that provide three sequential contamination barriers on each shaft. Seal replacement is among the most common rotary cutter gearbox parts requirements, typically triggered by visible oil leakage at the shaft exits. Worn seals should be replaced immediately upon discovery, as oil loss leads to accelerated bearing and gear wear that will require far more costly component replacement if left unaddressed.<\/p>\n

Gear Oil and Lubrication System
\nThe RC-33 uses a fully sealed oil-bath lubrication system holding 23 oz. (0.68 L) of gear oil. The rotating gears carry lubricant from the sump to the upper bearing and contact zones on every revolution, eliminating the need for active oil circulation. Both mineral and synthetic rotary cutter gearbox oil formulations are compatible, with synthetic oils generally providing extended service intervals and better high-temperature viscosity stability. Oil condition and rotary cutter gearbox oil level should be checked at the start of each season and after every 50 operating hours under normal conditions.<\/p>\n

Precision Cast Iron End Caps
\nEnd caps close the housing bores at shaft entry and exit points, retaining the bearing assemblies and providing the secondary sealing face against which the oil seals operate. Cast iron is specified for its dimensional stability across the temperature range experienced during field operation. A well-machined end cap bore surface is critical to seal longevity, as seal lip wear accelerates when running against a rough or corroded bore. End cap condition should be assessed during any gearbox disassembly for repair or rebuild.<\/p>\n

\"Pi\u00e8ces<\/p>\n

\u00c9tapes d'installation<\/h2>\n

Step 1: Verify Fitment Before Removal
\nAvant de retirer l'unit\u00e9 d\u00e9fectueuse, v\u00e9rifiez que le r\u00e9ducteur RC-33 est compatible avec l'entraxe de fixation, le type d'arbre de sortie et les dimensions du moyeu pilote de votre broyeur rotatif ou tondeuse de finition. Comparez le tableau des dimensions physiques ci-dessus avec les sp\u00e9cifications du fabricant de votre machine. Assurez-vous que le rapport de transmission est adapt\u00e9 \u00e0 la vitesse de la prise de force de votre tracteur et \u00e0 l'application de coupe pr\u00e9vue. Commander un r\u00e9ducteur de remplacement pour broyeur rotatif avec un rapport ou un entraxe de fixation incorrect entra\u00eenera des frais de retour et retardera vos travaux aux champs.<\/p>\n

Step 2: Disconnect PTO Driveline and Drain Old Unit
\nDisengage the tractor PTO and allow the implement to come to a complete stop before touching the driveline. Remove the PTO driveshaft from the old gearbox input and secure it away from the working area. Position a drain tray under the old unit and remove the drain plug to fully evacuate the gear oil before disassembly. Allowing the old oil to drain fully before unbolting the unit prevents contamination of the mounting area and makes handling the removed unit cleaner and safer.<\/p>\n

Step 3: Remove the Old Gearbox
\nSupport the blade carrier deck before removing the gearbox mounting bolts to prevent the deck from dropping and injuring personnel or damaging the blade hub. Remove all flange mounting bolts, noting the bolt pattern and any shim material used to adjust gearbox height. Separate the gearbox from the blade spindle or hub assembly carefully, as the output shaft spline or key connection may be tight after extended service. Do not pry against the housing sealing faces or bearing caps when breaking the old unit free.<\/p>\n

Step 4: Clean and Inspect the Mounting Surface
\nThoroughly clean the deck mounting area, removing all old gasket material, corrosion, and debris from the mating surfaces. Inspect the mounting holes for elongation or thread damage and repair as needed before proceeding. A clean, flat mating surface is essential to achieving an oil-tight joint between the gearbox flange and the deck. Any residual gasket material left on the deck surface will create a gap at the joint that allows moisture ingress and can cause joint fretting over time.<\/p>\n

Step 5: Mount and Torque the New RC-33
\nLift the new RC-33 into position and engage the output shaft with the blade hub or spindle. Install all mounting bolts by hand before tightening any of them, ensuring the flange seats squarely against the deck. Tighten bolts in a cross pattern to the torque specification listed in the rotary cutter OEM manual for the flange size. Correct torquing prevents flange distortion and seal face crushing that would compromise the gearbox-to-deck joint sealing from the first hours of operation.<\/p>\n

Step 6: Fill with Gear Oil and Test Run
\nFill the RC-33 to the correct rotary cutter gearbox oil level to 23 oz. (0.68 L) to using a gear oil grade suitable for your operating temperature range. Replace and tighten the fill plug securely. Reconnect the PTO driveline, ensuring the driveshaft safety guard is correctly fitted. Before returning to field cutting, run the gearbox at low PTO speed for several minutes with no cutting load, then check the mounting area and seals for any leakage. Allow the gearbox to reach normal operating temperature before increasing to full PTO speed for field work.<\/p>\n

\"Caract\u00e9ristiques<\/p>\n

Identifying When to Replace Your Rotary Cutter Gearbox<\/h2>\n
\n

Unusual Noises During Operation<\/h3>\n

Grinding, clunking, or high-pitched whining sounds heard during field cutting are consistent with gear tooth damage, bearing race deterioration, or loss of lubrication. Healthy bevel gears in an oil-bath gearbox produce minimal noise at operating speed. Any new or changed noise should be investigated immediately by checking the\u00a0rotary cutter gearbox oil level\u00a0and inspecting for metal debris in the drain oil. Continued operation with audible gear or bearing distress accelerates internal damage to the point where repair becomes uneconomical.<\/p>\n<\/div>\n

\n

Oil Leakage at Seals or Housing<\/h3>\n

Active oil weeping at shaft seal exits or seepage from housing joint lines indicates seal or gasket failure. A leaking gearbox will progressively lose its oil charge, eventually running metal-on-metal under load. For the RC-33 with its 23 oz. total oil capacity, even a moderate leak rate can result in critical oil loss within a single working day. Minor seal leakage may be resolved by seal replacement during a\u00a0rotary cutter gearbox repair. Leakage from a cracked housing requires full unit replacement.<\/p>\n<\/div>\n

\n

Excessive Vibration in the Implement<\/h3>\n

Vibration levels noticeably higher than when the machine was new can indicate internal gear misalignment, a damaged bearing, or a shaft with excessive play in its bore. Elevated vibration increases wear on all rotating components within the gearbox at a rate proportional to the vibration amplitude and frequency. It also transmits through the driveline to the tractor PTO and hitch components, potentially causing premature wear there as well. Checking for shaft play by hand with the tractor PTO disengaged is a quick first diagnostic step.<\/p>\n<\/div>\n

\n

Decline in Cutting Performance<\/h3>\n

If the rotary cutter struggles to maintain cutting speed through material it previously handled without difficulty, or if the tractor PTO load indicator shows unusually high demand at lower vegetation densities, the gearbox power transmission efficiency may have declined. Internal gear tooth wear reduces the efficiency of energy transfer, meaning more input energy is lost as heat and less is delivered to the blade. A measurable drop in output shaft speed relative to PTO input speed, when measured with a tachometer, is a definitive indicator of significant internal gear wear.<\/p>\n<\/div>\n

\n

Elevated Operating Temperature<\/h3>\n

Under normal operating conditions, a healthy oil-bath\u00a0finishing mower gearbox\u00a0or rotary cutter gearbox will reach a stable operating temperature between 140\u00b0F and 160\u00b0F (60\u00b0C and 71\u00b0C) during sustained field use. A housing surface temperature consistently or rapidly exceeding this range during normal-load operation indicates insufficient lubrication, oil viscosity breakdown, bearing friction increase, or gear contact abnormality. Use a non-contact infrared thermometer to check housing surface temperature. Any reading above 180\u00b0F (82\u00b0C) warrants immediate shutdown and investigation before returning the unit to service.<\/p>\n<\/div>\n

\n

Metal Debris in Drain Oil<\/h3>\n

When draining spent gear oil for the annual oil change, inspect the drained fluid for suspended metallic particles. Fine grey metallic powder in the oil is normal wear product from a gearbox that has been in service for several seasons. However, the presence of larger metallic flakes or fragments, visible to the naked eye in the drained oil, indicates material loss from gear teeth or bearing races at a rate that requires immediate internal inspection. At that point, a\u00a0rotary cutter gearbox rebuild\u00a0assessment by a qualified technician is strongly recommended before further operation.<\/p>\n<\/div>\n

\"Bo\u00eete<\/p>\n

Bo\u00eete de vitesses de coupe rotative et arbre de transmission de la prise de force<\/h2>\n

La bo\u00eete de vitesses de la faucheuse rotative et l'arbre de prise de force (PDF) sont indissociables dans la cha\u00eene de transmission de puissance entre le moteur du tracteur et les lames de coupe. La prise de force du tracteur est un arbre rotatif situ\u00e9 \u00e0 l'arri\u00e8re de la bo\u00eete de vitesses et actionn\u00e9 par l'op\u00e9rateur via une commande d'embrayage d\u00e9di\u00e9e. Une fois enclench\u00e9e, la PDF tourne \u00e0 540 ou 1\u00a0000 tr\/min, selon le mode de prise de force s\u00e9lectionn\u00e9 et le mod\u00e8le du tracteur. Cette rotation constitue la principale source d'\u00e9nergie pour tous les outils entra\u00een\u00e9s par la PDF, des presses \u00e0 balles et pulv\u00e9risateurs aux faucheuses rotatives et fraises.<\/p>\n

L'arbre de transmission de la prise de force, \u00e9galement appel\u00e9 arbre de transmission, assure la liaison entre la sortie de la prise de force du tracteur et l'entr\u00e9e de l'outil. Cet arbre t\u00e9lescopique en deux parties est muni de joints de cardan \u00e0 ses deux extr\u00e9mit\u00e9s. Ces joints compensent le d\u00e9salignement angulaire entre le point d'attelage du tracteur et l'arbre d'entr\u00e9e de l'outil lorsque le tracteur tourne, prend un virage ou \u00e9volue sur un terrain accident\u00e9. L'arbre de transmission transmet la puissance de rotation gr\u00e2ce \u00e0 cette liaison \u00e0 angle et longueur variables, sans variation significative de la vitesse.<\/p>\n

C\u00f4t\u00e9 outil, l'arbre de transmission de la prise de force se raccorde \u00e0 la bo\u00eete de vitesses pour l'arbre d'entr\u00e9e de la fraise rotative. Sur le RC-33, ce raccordement s'effectue par un embout cannel\u00e9 qui s'embo\u00eete dans le coupleur cannel\u00e9 femelle de l'arbre de transmission. Le raccordement est s\u00e9curis\u00e9 par une bague de verrouillage ou une goupille \u00e0 ressort emp\u00eachant tout d\u00e9sengagement accidentel en cours de fonctionnement. Conform\u00e9ment \u00e0 la r\u00e9glementation agricole en vigueur sur les principaux march\u00e9s agricoles, tous les arbres de transmission de prise de force utilis\u00e9s avec le RC-33 doivent \u00eatre \u00e9quip\u00e9s d'un carter de protection int\u00e9gral recouvrant l'arbre rotatif et les joints de cardan.<\/p>\n

Once power enters the RC-33 from the driveshaft, the gearbox performs three distinct functions that the PTO shaft alone cannot: it changes the rotational direction by 90 degrees, it multiplies the input torque according to the selected gear ratio, and it reduces the rotational speed to the level appropriate for blade tip speed at the cutting radius. This torque multiplication is the reason a tractor producing a relatively modest PTO torque output can drive a heavy multi-blade rotary cutter through dense, mature vegetation to the gearbox amplifies force at the cost of speed.<\/p>\n

From a service perspective, the PTO driveshaft and the agricultural gearbox age together. U-joint wear in an aging driveshaft introduces vibration and angular velocity fluctuation that accelerate bearing wear inside the gearbox. Conversely, a gearbox with worn bearings transmits elevated vibration back into the driveshaft, accelerating U-joint wear. For this reason, when replacing the RC-33 as a rotary cutter gearbox replacement, it is good practice to inspect the PTO driveshaft simultaneously and replace any U-joints that show perceptible play or roughness under rotation.<\/p>\n

La longueur correcte de l'arbre de transmission est essentielle \u00e0 la long\u00e9vit\u00e9 de la bo\u00eete de vitesses. Un arbre trop long risque de bloquer les sections t\u00e9lescopiques en position basse, transmettant ainsi la pouss\u00e9e axiale directement aux roulements de l'arbre d'entr\u00e9e de la bo\u00eete de vitesses. Un arbre trop court, quant \u00e0 lui, risque de se s\u00e9parer en position haute. Il est imp\u00e9ratif de v\u00e9rifier les recommandations du fabricant concernant le chevauchement minimal des tubes t\u00e9lescopiques (g\u00e9n\u00e9ralement un tiers de leur longueur) lors de tout changement de bo\u00eete de vitesses ou de hauteur d'attelage. Le choix de l'arbre de transmission adapt\u00e9 \u00e0 la bo\u00eete de vitesses de la d\u00e9broussailleuse rotative RC-33 est tout aussi important pour la fiabilit\u00e9 du syst\u00e8me que les sp\u00e9cifications de la bo\u00eete de vitesses elle-m\u00eame.<\/p>\n

\"Arbre<\/p>\n

Pourquoi choisir les r\u00e9ducteurs pour fraises rotatives de CMN Transmission ?<\/h2>\n

Korea CMN Transmission Co., Ltd. was established in 2000 and is headquartered in Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, Korea. With over 100 factory employees and more than 25 years of focused manufacturing experience in the agricultural gearbox sector, CMN Transmission has grown into a trusted global supplier recognized for engineering integrity, consistent product quality, and responsive customer support.<\/p>\n

La gamme de produits CMN comprend des r\u00e9ducteurs pour broyeurs rotatifs, fraises rotatives, m\u00e9langeuses d'aliments, faucheuses 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 pour vergers, andaineurs rotatifs, moissonneuses-batteuses, syst\u00e8mes de stockage et de transport de c\u00e9r\u00e9ales, cueilleuses \u00e0 ma\u00efs, barres de coupe et syst\u00e8mes d'alimentation pour volailles. Cette gamme couvre pr\u00e8s de mille sp\u00e9cifications, y compris des conceptions sur mesure. Ces produits \u00e9quipent les machines de r\u00e9colte de c\u00e9r\u00e9ales, les machines fourrag\u00e8res, les faucheuses, les presses \u00e0 balles, les andaineurs, les fraises, les pulv\u00e9risateurs, les m\u00e9langeuses d'aliments, les ensileuses et les moissonneuses-batteuses sur les march\u00e9s du monde entier.<\/p>\n

With an annual production capacity exceeding 500,000 units and exports to over 60 destinations to including the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, India, Thailand, Vietnam, Turkey, Australia, and New Zealand to CMN Transmission brings genuine global scale and regional market knowledge to every partnership. We hold CE, ISO 9001, Environmental Management, and Occupational Health and Safety certifications, reflecting our commitment to quality management, environmental responsibility, and safe manufacturing practices throughout our supply chain.<\/p>\n

\"Fabricants<\/p>\n

Foire aux questions<\/h2>\n

Q: Is the RC-33 a direct drop-in replacement for the Omni RC-33 gearbox?<\/strong>
\nA: Yes. The CMN Transmission RC-33 is manufactured to match the physical dimensions, flange bolt pattern, hub pilot diameter, and shaft configuration of the Omni RC-33 gearbox. Before ordering, cross-reference the physical dimensions table on this page against your existing gearbox or machine OEM specifications to confirm compatibility. If you have a specific question about fitment to a particular rotary cutter brand or model, contact our technical sales team with your machine details.<\/p>\n

Q: What type of oil should I use in the RC-33 rotary cutter gearbox?<\/strong>
\nA: The RC-33 is compatible with both mineral and synthetic gear oils. A typical recommendation for moderate-climate operation is a GL-5 rated 80W-90 gear oil. For operation in very high ambient temperatures or extended-hour commercial use, a synthetic 75W-90 GL-5 gear oil provides better viscosity retention at elevated temperatures and longer service intervals. Always fill to the correct rotary cutter gearbox oil level of 23 oz. (0.68 L) and check for leakage after the first few operating hours with any new oil fill.<\/p>\n

Q: What gear ratio should I choose for my tractor HP and application?<\/strong>
\nA: The three available rotary cutter gearbox ratio options (1:1.47, 1:1.71, 1:1.93) each produce a different blade tip speed for the same PTO input. The 1:1.47 ratio delivers higher blade speed, suited to light grass cutting and finishing mower applications where a clean, fine cut is the priority. The 1:1.93 ratio provides the lowest blade speed but the highest torque, best suited to heavy-duty brush clearing, thick straw crushing, and dense weed management. The 1:1.71 ratio offers a mid-range balance suitable for general mixed-vegetation cutting. Contact CMN Transmission if you need specific blade speed calculations for your application.<\/p>\n

Q: How often should I change the rotary cutter gearbox oil?<\/strong>
\nA: For the RC-33 under typical agricultural use, we recommend a full rotary cutter gearbox oil change annually or every 200 operating hours, whichever comes first. In high-load applications such as heavy brush clearing or extended commercial mowing hours, consider an oil change at the 100-hour interval. Always check the oil level at the start of each season and after every 50 operating hours. Inspect drained oil for metallic debris as a routine health check of internal component condition.<\/p>\n

Q: Can the RC-33 be used as a 40 hp, 60 hp, 75 hp, or 100 hp rotary cutter gearbox?<\/strong>
\nR : Oui. Le couple nominal du r\u00e9ducteur RC-33, de 2\u00a0800 \u00e0 4\u00a0667 lb-po (316 \u00e0 527 Nm), couvre les besoins en puissance des tracteurs d'environ 40 \u00e0 100 ch aux vitesses de prise de force standard. Utilis\u00e9 avec un broyeur rotatif de 40 ch, le r\u00e9ducteur fonctionne parfaitement dans sa plage nominale. Pour une application avec un broyeur rotatif de 75 ou 100 ch, assurez-vous que le rapport de r\u00e9duction s\u00e9lectionn\u00e9 corresponde \u00e0 la vitesse de sortie de la prise de force et \u00e0 la vitesse nominale de la lame. V\u00e9rifiez toujours que le couple nominal du r\u00e9ducteur, tel que sp\u00e9cifi\u00e9 par le fabricant de l'outil, se situe bien dans la plage nominale du RC-33 pour votre application sp\u00e9cifique.<\/p>\n

Q: What are the most common rotary cutter gearbox repair needs?<\/strong>
\nA: The most common rotary cutter gearbox repair items, in order of frequency, are: oil seal replacement (the most common, typically caused by hardened or worn seal lips), bearing replacement (usually triggered by oil starvation or end-of-service-life wear), and bevel gear set replacement (typically the result of operating with insufficient lubrication or exceeding the rated torque for an extended period). Shaft seal replacement is straightforward and can usually be completed in the field with basic tools. Bearing and gear replacement requires gearbox disassembly and should be performed by a qualified mechanic.<\/p>\n

Q: How do I check the rotary cutter gearbox oil level correctly?<\/strong>
\nA: To check the rotary cutter gearbox oil level on the RC-33, first disconnect the PTO and allow all rotation to stop. Position the implement on a level surface and allow the oil to settle for at least five minutes after recent operation. Remove the fill plug and check that oil is visible at the opening. The total capacity is 23 oz. (0.68 L), and the fill port position is designed so that oil reaching the port height indicates a correct fill level. If oil is not visible at the port, add the correct oil type in small increments, checking level after each addition to avoid overfilling.<\/p>\n

Q: Is the RC-33 available as a rotary cutter gearbox rebuild kit?<\/strong>
\nA: CMN Transmission supplies the RC-33 as a complete assembled gearbox unit. For operators who prefer a rotary cutter gearbox rebuild approach, individual rotary cutter gearbox parts including seals, bearings, and gear sets can be sourced. Contact our technical team with the specific part requirement. For gearboxes with significant internal wear or housing damage, replacement of the complete unit is typically more cost-effective than sourcing individual components, as it also brings the full assembly back to new condition with a fresh warranty.<\/p>\n

Q: What is the lead time and shipping options for this gearbox?<\/strong>
\nA: CMN Transmission maintains stock inventory of the RC-33 in the most commonly ordered configurations. For in-stock units, orders are typically dispatched within 1 to 3 business days. International shipping lead times vary by destination: North America 7 to 12 business days, Europe 8 to 14 business days, Australia and New Zealand 9 to 15 business days, and South America 10 to 18 business days depending on customs clearance. Express freight options are available for urgent requirements. Contact sales for current stock availability and freight quotation to your specific destination.<\/p>\n

Q: Do you offer OEM or custom rotary cutter gearbox configurations?<\/strong>
\nA: Yes. As one of the established rotary cutter gearbox manufacturers and suppliers in the global agricultural market, CMN Transmission supports OEM customers and distributors with custom shaft configurations, non-standard ratios, alternative coatings, and modified flange patterns. Custom oil port positions and alternative seal materials (including Viton seals for high-temperature or chemical-exposure environments) are available on request. Minimum order quantities apply for custom configurations. Contact the CMN Transmission OEM sales team with your technical specifications to discuss options.<\/p>\n

Q: How does the RC-33 compare to other replacement gearboxes for rotary cutters on the market?<\/strong>
\nA: The RC-33 from CMN Transmission stands out among rotary cutter gearbox for sale options through its combination of ductile iron housing (superior impact resistance versus grey iron or aluminium alternatives), triple lip spring-loaded seals (more durable than standard double-lip or cartridge seals on cheaper units), precision machine-cut forged bevel gears, and ISO 9001-certified manufacturing quality. CMN has over 25 years of dedicated agricultural gearbox manufacturing experience and exports to 60+ countries. This combination of engineering quality, material specification, and manufacturing certification makes the RC-33 a competitive choice against both OEM and generic replacement gearbox for rotary cutter options.<\/p>\n

\"Bo\u00eete<\/p>\n

Avis clients<\/h2>\n

James, Pasture and Roadside Mowing, USA<\/strong>
\n\u00ab Nous exploitons une entreprise de tonte commerciale sur environ 1\u00a0400 hectares de p\u00e2turages et r\u00e9alisons des travaux d'entretien des bords de route au Texas. La bo\u00eete de vitesses d'origine de notre faucheuse Rhino de 3 m\u00e8tres a fini par rendre l'\u00e2me apr\u00e8s des ann\u00e9es d'utilisation intensive. J'ai command\u00e9 la bo\u00eete de vitesses de remplacement RC-33 chez CMN Transmission et elle a \u00e9t\u00e9 install\u00e9e en une matin\u00e9e. C'\u00e9tait il y a quatorze mois. Depuis, elle a subi des conditions extr\u00eames \u2013 herbes hautes et denses, foss\u00e9s inond\u00e9s, etc. \u2013 et elle n'a jamais failli. Les joints \u00e0 triple l\u00e8vre sont en parfait \u00e9tat. Aucune fuite d'huile. C'est du mat\u00e9riel de qualit\u00e9, pas une contrefa\u00e7on bon march\u00e9. \u00bb<\/p>\n

Robert, Grain and Forage Farm, Canada<\/strong>
\n\u00ab\u00a0Je suis agriculteur pr\u00e8s de Red Deer depuis 30 ans et j'ai us\u00e9 plusieurs r\u00e9ducteurs de broyeurs rotatifs. Le CMN RC-33 est de loin le meilleur que j'aie utilis\u00e9. La pi\u00e8ce moul\u00e9e est robuste, sans porosit\u00e9, et les engrenages coniques s'embo\u00eetent parfaitement, sans jeu \u00e0 la r\u00e9ception. J'ai opt\u00e9 pour le rapport 1:1,71 adapt\u00e9 \u00e0 mon tracteur de 75 ch, et la vitesse de la lame est id\u00e9ale pour mes champs de gramin\u00e9es et de tr\u00e8fle. La livraison en Alberta a pris environ 8 jours, ce qui est tout \u00e0 fait correct vu notre situation g\u00e9ographique. Je n'h\u00e9siterais pas \u00e0 commander \u00e0 nouveau.\u00a0\u00bb<\/p>\n

Carlos, Sorghum and Tall Grass Cutting, Mexico<\/strong>
\n\u00ab\u00a0Excellente qualit\u00e9 et livraison rapide\u00a0: re\u00e7u en 11\u00a0jours \u00e0 Jalisco, ce qui est surprenant vu que nous avions command\u00e9 en Cor\u00e9e. J\u2019ai install\u00e9 le RC-33 sur ma d\u00e9broussailleuse rotative de 1,80\u00a0m que j\u2019utilise pour couper le sorgho et les hautes herbes. La bo\u00eete de vitesses fonctionne parfaitement, sans bruit ni fuite. Le joint \u00e0 triple l\u00e8vre est exactement ce qu\u2019il me fallait pour les conditions boueuses saisonni\u00e8res. L\u2019\u00e9quipe commerciale a r\u00e9pondu \u00e0 mes questions techniques en moins de 24\u00a0heures. Je recommande vivement 100%.\u00a0\u00bb<\/p>\n

Felipe, Sugarcane Operation, Brazil<\/strong>
\n\u00ab\u00a0Notre exploitation du Mato Grosso g\u00e8re les r\u00e9sidus de canne \u00e0 sucre apr\u00e8s la r\u00e9colte, ce qui soumet la bo\u00eete de vitesses \u00e0 rude \u00e9preuve\u00a0: les tiges sont \u00e9paisses et les d\u00e9bris v\u00e9g\u00e9taux lourds. Nous avons d\u00e9j\u00e0 subi des pannes avec deux bo\u00eetes de vitesses de marques diff\u00e9rentes en deux saisons. La CMN RC-33 fonctionne depuis huit mois, au rythme de notre cycle de coupe, sans la moindre d\u00e9faillance. Son couple de sortie, compris entre 316 et 527\u00a0Nm, est parfaitement adapt\u00e9 \u00e0 l\u2019application. La qualit\u00e9 de la fonderie est nettement sup\u00e9rieure \u00e0 celle des mod\u00e8les que nous achetions localement auparavant. L\u2019\u00e9quipe export de CMN nous a \u00e9t\u00e9 d\u2019une grande aide pour les formalit\u00e9s d\u2019importation.\u00a0\u00bb<\/p>\n

David, Agricultural Machinery, UK<\/strong>
\n\u00ab Nous sommes concessionnaires de machines agricoles dans le Yorkshire et nous avons commenc\u00e9 \u00e0 stocker les bo\u00eetes de vitesses CMN Transmission comme alternative aux pi\u00e8ces d'origine, de plus en plus difficiles \u00e0 trouver rapidement. La RC-33 s'adapte parfaitement \u00e0 de nombreuses marques de fraises que nous voyons dans la r\u00e9gion\u00a0; les dimensions de la bride sont id\u00e9ales. Notre \u00e9quipe d'atelier est impressionn\u00e9e par la qualit\u00e9 d'usinage. Le d\u00e9lai de livraison de notre premi\u00e8re commande \u00e9tait satisfaisant et le service export de CMN au Royaume-Uni a \u00e9t\u00e9 tr\u00e8s r\u00e9actif. Nous en avons maintenant six en service chez des agriculteurs du Yorkshire du Nord et nous n'avons rencontr\u00e9 aucun probl\u00e8me de garantie. \u00bb<\/p>\n

Klaus, Orchard and Vineyard Management, Germany<\/strong>
\n\u00ab Nous exploitons une entreprise de travaux agricoles en Bavi\u00e8re avec plusieurs tracteurs et faucheuses rotatives. Nous avons install\u00e9 la bo\u00eete de vitesses de remplacement RC-33 de CMN pour remplacer une bo\u00eete d'origine d\u00e9fectueuse. L'installation a \u00e9t\u00e9 parfaite, sans aucune retouche. La bo\u00eete de vitesses a maintenant fonctionn\u00e9 pendant toute une saison de fauche \u2013 environ 400 heures \u2013 sans aucun probl\u00e8me. Aucune fuite d'huile, aucun bruit. La qualit\u00e9 cor\u00e9enne est vraiment convaincante. Nous allons commander d'autres unit\u00e9s. \u00bb<\/p>\n

Shane, Mixed Crop Farm, Australia<\/strong>
\n\u00ab Je g\u00e8re une exploitation agricole mixte en Nouvelle-Galles du Sud avec un tracteur de 100 ch et une d\u00e9broussailleuse robuste pour le d\u00e9broussaillage des bordures de parcelles et des berges des ruisseaux. La bo\u00eete de vitesses que j'utilisais a fissur\u00e9 son carter apr\u00e8s avoir heurt\u00e9 une souche immerg\u00e9e. J'avais besoin d'une pi\u00e8ce de rechange rapidement. La livraison de CMN Australie a \u00e9t\u00e9 plus rapide que pr\u00e9vu\u00a0: neuf jours ouvrables entre la commande et la r\u00e9ception \u00e0 ma ferme. La RC-33 s'est install\u00e9e sans probl\u00e8me, le rapport de transmission ayant \u00e9t\u00e9 confirm\u00e9 par courriel avant ma commande. Huit mois plus tard, aucune fuite d'huile et aucun bruit. Le carter en fonte ductile est nettement plus lourd et plus solide que celui de l'ancienne bo\u00eete. \u00bb<\/p>\n

Gurpreet, Grain Farm, India<\/strong>
\n\u00ab Nous exploitons 80 hectares de bl\u00e9 et de riz au Pendjab et utilisons le r\u00e9ducteur CMN RC-33 sur notre faucheuse rotative. Il s'est av\u00e9r\u00e9 extr\u00eamement utile pour la gestion des chaumes\u00a0: aucune fuite, aucun bruit pendant toute la saison. La qualit\u00e9 des roulements et des joints est excellente. La livraison a \u00e9t\u00e9 effectu\u00e9e en 12 jours, plus rapidement que pr\u00e9vu. L'\u00e9quipe commerciale de CMN a r\u00e9pondu rapidement sur WhatsApp. Nous passerons une nouvelle commande. \u00bb<\/p>\n

Alejandro, Soybean and Corn Cutting, Argentina<\/strong>
\n\u00ab Nous sommes distributeurs de pi\u00e8ces d\u00e9tach\u00e9es agricoles \u00e0 Buenos Aires et nous vendons des bo\u00eetes de vitesses CMN Transmission \u00e0 nos clients depuis plus de deux ans. La RC-33, en particulier, a une excellente rotation\u00a0: les producteurs de soja et de ma\u00efs l\u2019utilisent pour la gestion des r\u00e9sidus apr\u00e8s r\u00e9colte et sont tr\u00e8s satisfaits de sa durabilit\u00e9. La qualit\u00e9 de la fonte ductile est perceptible au toucher. Les d\u00e9lais de livraison de CMN sont constants et la facturation commerciale \u00e0 l\u2019importation est toujours bien document\u00e9e. Nous continuerons \u00e0 travailler avec eux. \u00bb<\/p>","protected":false},"excerpt":{"rendered":"

The RC-33 Rotary Cutter Gearbox Replacement for Omni RC-33 Gearbox is a heavy-duty power transmission unit engineered exclusively for agricultural machinery. Designed to drive rotary blades in demanding field operations, this gearbox for rotary cutter excels at grass cutting, straw crushing, and brush clearing across a wide range of terrain conditions. Its core function is to transform the raw rotational output of the tractor PTO shaft into precisely managed, high-torque mechanical energy that blade assemblies demand. Whether you are running a three-point-hitch finishing mower across a flat paddock or pushing a rotary slasher through dense roadside scrub, the RC-33 delivers consistent, load-stable power.<\/p>","protected":false},"featured_media":7843,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[301],"product_tag":[303,302,306,304,307,305,308],"class_list":{"0":"post-7919","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rotary-cutter-gearbox","7":"product_tag-gearbox-for-rotary-cutter","8":"product_tag-rotary-cutter-gearbox","9":"product_tag-rotary-cutter-gearbox-for-sale","10":"product_tag-rotary-cutter-gearbox-manufacturers","11":"product_tag-rotary-cutter-gearbox-ratio","12":"product_tag-rotary-cutter-gearbox-suppliers","13":"product_tag-rotary-mower-gearbox","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product\/7919","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=7919"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media\/7843"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media?parent=7919"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_brand?post=7919"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_cat?post=7919"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_tag?post=7919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}