{"id":7967,"date":"2026-09-07T07:13:27","date_gmt":"2026-09-07T07:13:27","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=7967"},"modified":"2026-09-07T08:35:59","modified_gmt":"2026-09-07T08:35:59","slug":"rc-145-rotary-cutter-gearbox-replacement-for-omni-rc-145-gearbox","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/fr\/produit\/rc-145-rotary-cutter-gearbox-replacement-for-omni-rc-145-gearbox\/","title":{"rendered":"Bo\u00eete de vitesses de remplacement pour broyeur rotatif RC-145 Omni RC-145"},"content":{"rendered":"

The RC-145 Rotary Cutter Gearbox Replacement for Omni RC-145 Gearbox is a heavy-duty agricultural gearbox engineered specifically for high-demand cutting machinery in the farming and land-management industries. Designed as a direct drop-in replacement for the OEM Omni RC-145 unit, this rotary cutter gearbox drives rotary knives and cutting decks for grass cutting, straw crushing, and brush clearing operations across a wide range of field conditions. Its bevel-gear architecture and triple-lip spring-loaded seals allow it to operate reliably in muddy paddocks, roadside ditches, and wetland areas where conventional drive units fail prematurely. With an HP rating spanning 71 to 181 HP and five selectable gear ratios, the RC-145 is equally at home on compact utility tractors and large row-crop machines, making it one of the most versatile gearboxes for rotary cutters available in the replacement market today.<\/p>\n

Le RC-145 convertit le r\u00e9gime moteur \u00e9lev\u00e9 de la prise de force du tracteur (g\u00e9n\u00e9ralement 540 ou 1\u00a0000 tr\/min) en un couple \u00e9lev\u00e9 \u00e0 basse vitesse, id\u00e9al pour le fonctionnement d'une lame rotative. Son syst\u00e8me d'engrenages d\u00e9livre un couple maximal de 2\u00a0252 Nm (19\u00a0950 lb-po), assurant une puissance constante m\u00eame en cas de fortes variations de la charge sur la lame, par exemple lors de la coupe de paille dense, de mauvaises herbes \u00e9paisses ou de broussailles. Gr\u00e2ce \u00e0 ses rapports de r\u00e9duction multiples (1,21:1, 1:1, 1:1,21, 1:1,46 et 1:1,92), l'op\u00e9rateur peut adapter la vitesse de la lame \u00e0 la densit\u00e9 de la culture et au terrain, des p\u00e2turages plats aux pentes abruptes en passant par les bordures de zones humides satur\u00e9es. Dot\u00e9 de brides de montage conformes \u00e0 la norme ISO et d'une capacit\u00e9 d'huile de 1,8 L, le RC-145 s'installe rapidement sur le terrain et facilite la maintenance programm\u00e9e, r\u00e9duisant ainsi les temps d'arr\u00eat pendant les p\u00e9riodes de pointe. Il s'agit d'une solution fiable utilis\u00e9e dans les tondeuses de finition, les broyeurs rotatifs et les d\u00e9broussailleuses rotatives du monde entier.<\/p>\n

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

Sp\u00e9cifications du produit<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Mod\u00e8le:<\/td>\nBo\u00eete de vitesses RC-145<\/td>\n<\/tr>\n
Puissance de sortie<\/td>\n71 \u2013 181 CV<\/td>\n<\/tr>\n
Couple :<\/td>\n7 117 \u2013 19 950 lb-po.
\n(803 \u2013 2 252 Nm.)<\/td>\n<\/tr>\n
Proportions :<\/td>\n1.21:1, 1:1, 1:1.21, 1:1.46, 1:1.92<\/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>\nTapered Roller<\/td>\n<\/tr>\n
Capacit\u00e9 en huile :<\/td>\n60 oz.
\n(1,8 L)<\/td>\n<\/tr>\n
Poids:<\/td>\n\u00a0110 lbs.
\n(50 kg)<\/td>\n<\/tr>\n
Applications :<\/td>\nTondeuses de finition
\nCoupeurs rotatifs
\nBroyeurs rotatifs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

RC-145 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>\nPoids maximal de l'unit\u00e9<\/th>\nCL \u00e0 travers Cap A<\/th>\nCL \u00e0 bride B<\/th>\nBride \u00e0 moyeu pilote C<\/th>\nDiam\u00e8tre pilote du moyeu H<\/th>\nDiam\u00e8tre de la bride D1<\/th>\nConfiguration des trous de boulons E1<\/th>\nTrous de fixation F1<\/th>\nBride carr\u00e9e taille D2<\/th>\nEntraxe des trous de fixation E2<\/th>\nTrous de fixation F2<\/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 Benefits of RC-145 Rotary Cutter Gearbox<\/h2>\n

1. Tractor PTO Direct Drive Compatibility
\nThe RC-145 connects directly to the tractor PTO shaft via standard 1-3\/8 inch or 1-3\/4 inch spline configurations, supporting both 540 RPM and 1,000 RPM inputs. Quick-change couplings simplify hitching and unhitching, so operators can swap implements in the field without tools, reducing setup time across mixed-use operations and improving daily productivity on large properties.<\/p>\n

2. Outstanding Durability and Environmental Protection
\nThe housing is produced from high-strength ductile iron with a red oxide primer finish and optional additional coatings for extreme corrosion environments. Triple-lip spring-loaded seals rated to IP67-equivalent protection prevent mud, water, crop sap, and fine abrasive dust from infiltrating the gear chamber. This sealed-environment approach extends bearing and gear service life substantially compared to older single-lip designs common in the replacement gearbox market.<\/p>\n

3. Multiple Speed Ratios Flexibility for Variable Crop
\nWith five available bo\u00eete de vitesses pour coupeuse rotative<\/strong><\/a> ratios (1.21:1, 1:1, 1:1.21, 1:1.46, and 1:1.92), the RC-145 can be configured to optimize blade speed for the specific task at hand, from high-speed finish-cut grass on level turf to heavy-torque brush clearing on steep slopes or through dense standing crop residue. This ratio flexibility makes a single gearbox model suitable for operations that would otherwise require separate units for each application type.<\/p>\n

4. Floating Design for Superior Terrain Adaptability
\nA floating gearbox design lets the cutting deck follow natural ground contours automatically, raising and lowering as the terrain undulates without operator input. This self-leveling action keeps blade-to-ground clearance consistent, preventing costly blade collisions with embedded stones, tree roots, or irrigation hardware. It is particularly valuable on hill paddocks, uneven orchards, and rough roadside verges where ground conditions change constantly.<\/p>\n

5. Field-Accessible Maintenance Design
\nAn externally located oil fill port and drain valve allow lubrication top-ups and full oil changes to be completed without removing the gearbox from the machine. This is critical when checking the rotary cutter gearbox oil level mid-season. Selected configurations also accommodate maintenance-free sealed bearings, further reducing scheduled service intervals and cutting the total labour cost of keeping the unit in peak condition throughout a demanding harvest period.<\/p>\n

6. Protection int\u00e9gr\u00e9e contre les surcharges
\nAn integrated overload clutch or shear bolt mechanism instantly interrupts power transfer the moment blade jamming or sudden overload is detected. This cuts off peak torque spikes before they can propagate back through the driveline to the tractor transmission, protecting both the gearbox and the host vehicle from expensive secondary damage. On models equipped with shock-absorber buffers, impact energy from blade strikes against rocks or stumps is further attenuated at the source.<\/p>\n

7. Direct OEM-Compatible Replacement Fit
\nManufactured to match all critical mounting dimensions of the original Omni RC-145, this replacement gearbox for rotary cutter installs without modification to the existing deck frame, driveline, or blade carrier. Bolt-hole patterns, flange diameter (260 mm), and hub pilot geometry are all held to OEM specification, so experienced farm mechanics can complete the swap in a single working session without specialist alignment tools or custom adapters.<\/p>\n

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

https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/09\/Rotary-Cutter-Gearbox.mp4<\/a><\/video><\/div>\n

Principe de fonctionnement<\/h2>\n

The RC-145 is a precision bevel-gear transmission unit that sits between the tractor PTO shaft and the blade spindle of a rotary cutting deck. Power flow begins at the input shaft, which connects to the tractor PTO via a driveline with a universal joint at each end. The PTO delivers rotational energy at a standard 540 RPM or 1,000 RPM, depending on the tractor model and operator selection. The input shaft passes this rotation directly into the gearbox housing, where it engages the bevel gear set. Bevel gears are conically shaped gears whose axes intersect at a right angle, so they can redirect torque by 90 degrees, converting horizontal shaft rotation into the vertical output axis needed to spin a horizontal cutting blade below the deck.<\/p>\n

Inside the housing, the bevel pinion (attached to the input shaft) meshes with the ring gear (attached to the output shaft). The ratio between the number of teeth on the pinion and the ring gear determines whether the unit speeds up, slows down, or maintains the same rotational speed through the gearbox. The RC-145 offers five selectable rotary cutter gearbox ratios, from 1.21:1 step-down for heavy-torque brush cutting to 1:1.92 step-up for high-speed finishing applications. This makes the unit adaptable to a much wider range of crop types and terrain profiles than fixed-ratio competitors.<\/p>\n

Torque output scales with the selected ratio, ranging from 803 Nm at low load to 2,252 Nm at peak demand. Tapered roller bearings on both input and output shafts absorb the radial and axial loads generated during gear mesh and blade impact events, maintaining precise shaft alignment under conditions that would cause premature failure in units fitted with standard deep-groove ball bearings. An oil-bath lubrication system submerges the lower portion of the bevel gear mesh in gear oil, with gearcase porting ensuring that oil flows continuously to the lower bearings during operation, preventing dry-running even when the gearbox is tilted on hillside terrain.<\/p>\n

Triple-lip spring-loaded seals on both shafts keep contamination out of the oil bath and prevent oil loss through the rotating shaft exits, which are the most common leakage points on field-used gearboxes. A pressure relief plug vents internal pressure caused by thermal expansion of the oil during heavy-duty operation, preventing seal blowout without allowing contamination ingress. For operators in extreme-duty applications, an optional labyrinth seal can be installed over the output shaft to add a second layer of contamination exclusion.<\/p>\n

The complete power path, from PTO input through bevel gear mesh to blade spindle output, is engineered to sustain the variable shock loading typical of rotary mower gearbox service. When a blade strikes a hidden rock or a dense clump of woody vegetation, the torque spike travels backward through the output shaft and into the gear mesh. Shear bolt or slip clutch overload protection (depending on configuration) intercepts this spike before it can cause bevel gear tooth fracture or input shaft bearing failure. This protection mechanism is one of the most important design features distinguishing a purpose-built agricultural gearbox from a general industrial unit adapted for field use.<\/p>\n

Correct rotary cutter gearbox oil selection and scheduled oil changes at the manufacturer-recommended intervals are the single most important maintenance actions for preserving gear and bearing life. The 1.8 L oil bath is accessible via the external fill port and drain valve, making field-level maintenance practical without removing the unit from the machine. Operators using 40 hp rotary cutter gearbox through 100 hp rotary cutter gearbox applications should verify that the oil grade used matches the operating temperature range expected in their region, as viscosity breakdown accelerates gear wear in hot-climate high-load conditions.<\/p>\n

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

RC-145 Rotary Cutter Gearbox Applications<\/h2>\n
\n

D\u00e9broussaillage et d\u00e9broussaillage<\/h3>\n

For clearing established brush along orchard borders, woodland margins, and fencelines, the RC-145 delivers the elevated torque required to sever woody stems up to several centimetres in diameter without stalling. High-torque output ratios allow the operator to reduce blade speed while maximizing torque, protecting both the cutting blades and the gearbox during extended encounters with hard, dry-season bramble canes or mature shrub growth that would overwhelm lower-rated\u00a0finishing mower gearbox\u00a0units.<\/p>\n

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

The RC-145 drives rotary blades at precisely tuned speeds to cut pasture grass, standing straw, and cover crops such as cornstalks or cereal residues. Blade RPM can be adjusted by selecting an appropriate gear ratio to control chop length: coarser cuts return organic matter to the soil surface more quickly, while finer crushing produces material suitable for feed mixing or bedding. This dual-purpose capability makes the RC-145 a standard choice for arable farms managing post-harvest residue and livestock operators maintaining pasture quality simultaneously.<\/p>\n<\/div>\n

\n

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

Combined with disc or dumping blade configurations, the RC-145 efficiently shreds and levels rice stubble, wheat stubble, and sunflower stalks ahead of primary tillage or direct seeding operations. Rapid stubble destruction reduces pest and disease pressure by eliminating overwintering sites in crop residue, while simultaneously incorporating organic matter that improves soil structure over successive seasons. The gearbox maintains consistent blade speed even as stubble density varies across a paddock, ensuring uniform residue distribution behind the cutter.<\/p>\n<\/div>\n

\n

Orchard and Vineyard Maintenance<\/h3>\n

The low-profile housing of the RC-145 suits orchard and vineyard machinery, where vertical clearance under tree canopies and vine trellises is restricted. The compact form factor allows the cutting deck to penetrate deeply into row middles, controlling inter-row weed growth and volunteer cover crops without damaging low-hanging branches or irrigation drip lines. The\u00a0rotary slasher gearbox\u00a0capability allows repeated passes at high travel speed during peak spring and summer growth flushes without overheating the unit.<\/p>\n<\/div>\n

\n

Contr\u00f4le de la v\u00e9g\u00e9tation en bordure de route et sur les emprises<\/h3>\n

Les services des routes et les entreprises d'entretien des emprises routi\u00e8res font appel \u00e0 des r\u00e9ducteurs agricoles robustes comme le RC-145 pour leurs programmes saisonniers de d\u00e9broussaillage. Sa r\u00e9sistance sup\u00e9rieure aux chocs lui permet de g\u00e9rer les d\u00e9bris impr\u00e9visibles rencontr\u00e9s en bordure de route, tels que les fragments de fil d'acier, les d\u00e9chets de bois et le gravier, sans les risques de rupture d'engrenages qui immobilisent les mod\u00e8les plus l\u00e9gers. Sa large plage de puissance (de 71 \u00e0 181 ch) convient aussi bien aux tracteurs municipaux qu'aux engins d'entretien routier sp\u00e9cialis\u00e9s utilis\u00e9s sur les accotements des autoroutes.<\/p>\n<\/div>\n

\n

Levee and Wetland Maintenance<\/h3>\n

Flood control and waterway management authorities operate rotary cutters fitted with the RC-145 on earthen levee banks, drainage channel margins, and constructed wetland edges. The triple-lip sealed bearing system and corrosion-resistant housing coating maintain reliable operation in waterlogged conditions where moisture ingress into unsealed gearboxes causes rapid deterioration of bearing raceways and gear tooth surfaces. Consistent power delivery on sloped levee faces is achieved by selecting the appropriate ratio for hillside torque demand.<\/p>\n<\/div>\n

\n

Forestry Mulching and Land Conversion<\/h3>\n

Le d\u00e9broussaillage initial en vue de la cr\u00e9ation de nouvelles cultures, de la construction de b\u00e2timents ou de la restauration d'habitats naturels implique la coupe d'une v\u00e9g\u00e9tation bien plus dense et dure que les r\u00e9sidus de r\u00e9coltes agricoles classiques. Les broyeurs rotatifs de forte puissance, \u00e9quip\u00e9s du moteur RC-145 (75 ch et plus), permettent de traiter rapidement et \u00e0 moindre co\u00fbt la v\u00e9g\u00e9tation secondaire l\u00e9g\u00e8re, les broussailles denses et les repousses ligneuses de petit diam\u00e8tre, comparativement aux m\u00e9thodes de d\u00e9broussaillage manuel. Le syst\u00e8me de protection contre les surcharges de la bo\u00eete de vitesses pr\u00e9vient les pannes catastrophiques lors des premiers passages en terrain inconnu.<\/p>\n

Municipal Parks Management<\/h3>\n

Les services des parcs et loisirs utilisent la RC-145 pour l'entretien des espaces verts autour des terrains de sport, des voies vertes et des cimeti\u00e8res comm\u00e9moratifs, o\u00f9 une pelouse impeccable n'est pas requise, mais o\u00f9 une hauteur de coupe pr\u00e9sentable et uniforme est exig\u00e9e. La large plage de puissance de l'appareil permet son utilisation sur des tracteurs utilitaires compacts dans les parcs aux espaces restreints, ou sur des machines plus imposantes pour couvrir de vastes zones de loisirs en une seule journ\u00e9e. Cette technologie offre l'efficacit\u00e9 n\u00e9cessaire aux services des travaux publics, dont les budgets d'entretien saisonniers sont limit\u00e9s.<\/p>\n<\/div>\n

\"Applications<\/p>\n

How to Correctly Replace the RC-145 Gearbox<\/h2>\n

1. Disconnect the PTO Driveline and Relieve All Stored Energy
\nBefore touching any fasteners, park the tractor on level ground, engage the parking brake, shut off the engine, and wait for all rotating components to come to a complete stop. Disconnect the PTO driveline at the tractor end and support the free shaft with a stand or strap to prevent it from dropping. Remove the key from the ignition and, where possible, lock out the PTO engagement mechanism. Working on a gearbox with residual driveline tension present is a leading cause of serious injury during rotary cutter gearbox replacement operations.<\/p>\n

2. Drain the Gear Oil from the Existing Unit
\nPosition a clean drain pan of sufficient volume beneath the gearbox drain valve. Remove the drain plug slowly, allowing the old oil to flow out completely. Inspect the drained oil for metal particles, which indicate internal gear or bearing damage. Dispose of used rotary cutter gearbox oil in accordance with local environmental regulations. Draining before removal prevents spillage during handling and keeps the working area clean for accurate inspection of the housing and mounting surfaces.<\/p>\n

3. Remove the Blade Assembly and Output Shaft Connection
\nSupport the cutting blade carrier safely before removing the output shaft retaining bolt or snap ring. Mark the blade carrier orientation relative to the output shaft spline before disassembly so it can be reinstalled in the same position, preserving balance. Blade carrier hubs can seize onto output shafts after extended service, so apply penetrating oil to the hub-to-shaft interface at least 15 minutes before attempting removal, and use a purpose-made hub puller rather than striking the hub directly.<\/p>\n

4. Unbolt the Gearbox from the Deck Frame
\nThe RC-145 is secured to the cutter deck via six flange mounting bolts arranged on a 203.2 mm bolt circle. Support the gearbox weight with a floor jack or hoist before removing the final bolts, since the 50 kg housing will drop suddenly once the last fastener is clear. Inspect the mounting face on the deck for corrosion, cracks, or deformed bolt holes before installing the replacement unit, as a distorted mounting surface will induce misalignment stress into the new gearbox from the first operating hour.<\/p>\n

5. Install and Torque the Replacement Unit
\nPositionnez le nouveau RC-145 en alignant le pilote du moyeu (96,0 mm de diam\u00e8tre) avec l'al\u00e9sage pilote du b\u00e2ti et les six trous de fixation avec le gabarit de la bride. Appliquez du frein-filet sur les boulons de fixation et serrez-les en \u00e9toile au couple sp\u00e9cifi\u00e9 dans le guide d'installation du fabricant. N'utilisez pas de fixations de classe 5 \u00e0 la place des boulons de classe 8 sp\u00e9cifi\u00e9s, car l'utilisation de fixations sous-dimensionn\u00e9es est une cause fr\u00e9quente de d\u00e9faillance pr\u00e9matur\u00e9e de la surface de montage du r\u00e9ducteur sur les broyeurs rotatifs soumis \u00e0 de fortes vibrations.<\/p>\n

6. Fill to Correct Oil Level and Check for Leaks
\nFill the gearbox to the specified level (1.8 L \/ 60 oz.) through the external fill port using the grade of gear oil recommended in the CMN Transmission specification sheet for the expected operating temperature. Replace the fill cap securely. Run the unit at low PTO speed for five minutes, then shut down and inspect all seal points, the fill cap, drain plug, and flange gasket face for any weeping or active leaks. Correct any leaks before returning the machine to full field-speed operation.<\/p>\n

7. Perform a Loaded Break-In Run and Retorque Fasteners
\nAllow the new gearbox to run under graduated load, starting at 50% of normal cutting speed for the first operating hour, then increasing to full speed and load for the next two hours. After the break-in period is complete, shut down and retorque all mounting bolts to specification while the housing is still warm, as thermal cycling causes fastener relaxation during the first operating session. Check the oil level again after the break-in run and top up as required before returning the machine to standard daily operation.<\/p>\n

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

Pr\u00e9cautions d'installation<\/h2>\n

Verify Compatibility Before Installation<\/strong>
\nV\u00e9rifiez que les dimensions du RC-145, notamment le diam\u00e8tre du moyeu (96,0 mm), le diam\u00e8tre de la bride (260 mm) et l'entraxe des six trous (203,2 mm), correspondent \u00e0 celles du r\u00e9cepteur de montage existant. M\u00eame parmi les unit\u00e9s de classe RC-145, les tol\u00e9rances dimensionnelles varient d'un fabricant \u00e0 l'autre, et une bride mal ajust\u00e9e engendrera des contraintes de flexion dans le carter d\u00e8s la premi\u00e8re heure de fonctionnement, acc\u00e9l\u00e9rant la d\u00e9faillance des roulements et des joints au-del\u00e0 de la dur\u00e9e de vie nominale de l'unit\u00e9.<\/p>\n

Use Correct Fasteners and Thread Treatment<\/strong>
\nAll mounting bolts must be Grade 8 (SAE) or property class 10.9 (metric) minimum. Apply medium-strength thread-locking compound to the bolt threads and torque to specification in a cross-pattern sequence. In high-vibration rotary cutter applications, self-locking fasteners or hardened flat washers should be added beneath the bolt heads if not already specified, as fastener backing-off under vibration is a common cause of housing-to-deck joint failure and consequent gearbox damage.<\/p>\n

Align the Driveline to Minimize U-Joint Working Angle<\/strong>
\nThe PTO driveline connecting the tractor output shaft to the gearbox input should be assembled so that the universal joints operate at equal and opposite angles, ideally below 6 degrees each when the implement is in the working position. Excessive or unequal U-joint angles generate cyclical vibration that loads the input shaft bearings asymmetrically, accelerating wear and producing the characteristic noise associated with failing gearbox for rotary cutter input assemblies before the gear teeth themselves are worn.<\/p>\n

Fill Oil Before First Start-Up<\/strong>
\nNew replacement gearboxes are shipped without oil or with only a light preservative coating on internal surfaces. Always fill to the specified 1.8 L oil capacity with the recommended gear oil grade before connecting the PTO driveline and starting the tractor. Running the unit even briefly without oil present will damage bearing surfaces and gear tooth contact patterns in ways that cannot be reversed by subsequent correct lubrication, significantly shortening the expected service life of the replacement unit from the first day of use.<\/p>\n

Inspect the Shear Bolt or Slip Clutch Overload Device<\/strong>
\nBefore returning the machine to field service, verify that the overload protection device, whether a shear bolt collar on the driveline or a slip clutch in the PTO coupler assembly, is correctly configured and set to the torque value recommended for the RC-145 HP rating. An overload device set too tight will allow excessive shock torque into the gearbox during blade strikes; one set too loose will slip under normal cutting load, causing power loss and premature clutch surface wear without providing any meaningful protection to the gearbox.<\/p>\n

Do Not Exceed the Rated HP Range<\/strong>
\nLe r\u00e9ducteur RC-145 est con\u00e7u pour une puissance d'entr\u00e9e continue maximale de 181 ch. Le raccordement de ce r\u00e9ducteur \u00e0 un tracteur d\u00e9veloppant une puissance sup\u00e9rieure \u00e0 la prise de force, ou l'utilisation du tracteur \u00e0 pleine puissance dans des conditions g\u00e9n\u00e9rant un couple de pointe soutenu, risque de surcharger les flancs de l'engrenage conique et les roulements de l'arbre d'entr\u00e9e au-del\u00e0 de leurs limites de conception. Lors de l'achat d'un r\u00e9ducteur de remplacement pour broyeur rotatif, il est imp\u00e9ratif de v\u00e9rifier la puissance r\u00e9elle de la prise de force du tracteur par rapport \u00e0 la puissance nominale du r\u00e9ducteur avant l'installation, en pr\u00e9voyant une marge de s\u00e9curit\u00e9 minimale de 151 ch (TP3T) en dessous de la puissance maximale indiqu\u00e9e.<\/p>\n

Schedule the First Oil Change at 50 Operating Hours<\/strong>
\nDuring the break-in period, fine metallic particles from gear tooth and bearing surface conditioning accumulate in the oil bath at a much higher rate than during steady-state operation. Changing the oil at 50 hours removes this initial wear debris before it can act as an abrasive agent on the gear flanks and bearing raceways it is meant to lubricate. After this first early change, follow the standard oil-change interval specified in the CMN Transmission service manual, typically every 250 to 500 operating hours depending on operating conditions and oil grade used.<\/p>\n

Store Unused Units Correctly if Delayed Installation<\/strong>
\nIf the replacement RC-145 will not be installed immediately after delivery, store it in a dry, temperature-stable environment with all port plugs installed and oil seals protected from UV exposure and chemical contact. Rotate the input shaft by hand through several full turns every 30 days to redistribute the internal preservative coating and prevent static corrosion on bearing raceways. Do not store the unit on its output shaft or on the flange face, as point-contact storage loads can deform seals and create flat spots on bearing rollers before the unit has entered service.<\/p>\n

\"Applications<\/p>\n

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

A rotary cutter gearbox and PTO shaft work as a paired system to transfer mechanical power from the tractor engine to the cutting blades on the mower deck. The Power Take-Off (PTO) shaft is a mechanical output driven directly by the tractor engine, typically through the transmission. It protrudes from the rear of the tractor and rotates at a standardized speed, either 540 RPM for lighter tractors and implements or 1,000 RPM for larger, higher-output machines. Agricultural machinery manufacturers around the world design their implement input requirements around these two standardized PTO speeds, allowing a wide range of implements, including rotary cutters, fertilizer spreaders, and balers, to be interchanged between compatible tractors without mechanical modification.<\/p>\n

La transmission reliant la prise de force du tracteur \u00e0 l'arbre d'entr\u00e9e de l'outil est un tube de pouss\u00e9e t\u00e9lescopique \u00e9quip\u00e9 de joints universels \u00e0 chaque extr\u00e9mit\u00e9. Cet ensemble est couramment appel\u00e9 arbre de prise de force ou transmission dans le langage agricole courant, bien que techniquement, la prise de force soit le point de sortie de puissance du tracteur et la transmission l'\u00e9l\u00e9ment de transmission m\u00e9canique entre le tracteur et l'outil. Pour les bo\u00eetes de vitesses des faucheuses rotatives, la transmission doit \u00eatre dimensionn\u00e9e pour supporter le couple de pointe maximal que la bo\u00eete de vitesses subira lors des impacts de la lame, et non seulement le couple de coupe en r\u00e9gime permanent, car les pics de couple peuvent atteindre trois \u00e0 cinq fois la valeur nominale.<\/p>\n

Le r\u00e9ducteur RC-145 se connecte directement \u00e0 la sortie de la prise de force du tracteur, en la faisant descendre verticalement sous le plateau de coupe, \u00e0 la barre porte-lames. Il re\u00e7oit l'\u00e9nergie de rotation de la transmission au niveau de l'arbre d'entr\u00e9e, la redirige \u00e0 90 degr\u00e9s gr\u00e2ce \u00e0 des engrenages coniques de pr\u00e9cision, puis la transmet par l'arbre de sortie pour entra\u00eener les lames de coupe pivotantes, robustes et performantes, au couple et \u00e0 la vitesse n\u00e9cessaires pour couper, broyer ou pailler la v\u00e9g\u00e9tation. Cette redirection de puissance \u00e0 90 degr\u00e9s constitue le principe m\u00e9canique fondamental de tout r\u00e9ducteur agricole \u00e0 angle droit utilis\u00e9 sur une faucheuse rotative, et la qualit\u00e9 de l'engr\u00e8nement des engrenages coniques est le facteur d\u00e9terminant de la dur\u00e9e de vie de l'appareil en conditions r\u00e9elles d'utilisation.<\/p>\n

Lorsqu'une lame heurte un amas de v\u00e9g\u00e9tation dense, une pierre enfouie ou un d\u00e9bris ligneux, le pic de couple qui en r\u00e9sulte se propage par l'arbre de sortie jusqu'\u00e0 l'engrenage, avant d'atteindre l'arbre d'entr\u00e9e et la transmission. Le syst\u00e8me de protection contre les surcharges du RC-145, qu'il s'agisse d'un boulon de cisaillement au niveau de l'accouplement de la transmission ou d'un embrayage \u00e0 friction int\u00e9gr\u00e9, est con\u00e7u pour intercepter ce pic de couple \u00e0 l'entr\u00e9e de la bo\u00eete de vitesses, plut\u00f4t que de le laisser se propager vers la prise de force du tracteur, o\u00f9 il risquerait d'endommager les composants de la transmission et d'entra\u00eener des r\u00e9parations co\u00fbteuses. Cette fonction de protection explique pourquoi investir dans une bo\u00eete de vitesses de remplacement de qualit\u00e9 pour les broyeurs rotatifs est toujours plus \u00e9conomique que d'utiliser des mod\u00e8les de qualit\u00e9 inf\u00e9rieure qui transmettent l'int\u00e9gralit\u00e9 des chocs \u00e0 travers toute la transmission.<\/p>\n

Le choix d'une transmission adapt\u00e9e au RC-145 n\u00e9cessite la prise en compte de trois param\u00e8tres\u00a0: le diam\u00e8tre de la cannelure d'entr\u00e9e (6 cannelures de 1-3\/8 ou 1-3\/4 pouce), le couple admissible de la transmission (qui doit d\u00e9passer le couple maximal de la bo\u00eete de vitesses de 19\u00a0950 lb-po \u00e0 la puissance maximale) et la plage de longueur de fonctionnement, calcul\u00e9e entre la prise de force du tracteur et l'arbre d'entr\u00e9e de la bo\u00eete de vitesses, l'outil \u00e9tant \u00e0 ses hauteurs de transport minimale et maximale. Une transmission trop courte risque de se bloquer en flexion, ce qui peut entra\u00eener sa rupture\u00a0; une transmission trop longue risque de s'\u00e9tendre compl\u00e8tement pendant le transport, ce qui peut provoquer la s\u00e9paration des sections t\u00e9lescopiques. Dans les deux cas, la transmission s'interrompt brutalement au pire moment possible lors des travaux aux champs.<\/p>\n

Les cinq rapports de transmission disponibles sur la RC-145 influent sur le rapport entre la vitesse d'entr\u00e9e de la prise de force et la vitesse de sortie de la lame, sans toutefois modifier les sp\u00e9cifications requises pour la prise de force ni l'interface de la transmission. Le choix du rapport s'effectue en s\u00e9lectionnant le jeu de rapports appropri\u00e9 lors de la commande, et les diff\u00e9rentes configurations de rapports ne sont pas interchangeables sur le terrain. Par cons\u00e9quent, les op\u00e9rateurs qui pr\u00e9voient de travailler sur une large gamme de densit\u00e9s de culture et de types de terrain, allant des applications en herbe l\u00e9g\u00e8re avec une bo\u00eete de vitesses rotative de 60 ch aux conditions de broussailles denses avec une bo\u00eete de vitesses rotative de 75 ch, doivent choisir un rapport offrant le meilleur compromis pour leur application typique la plus exigeante, plut\u00f4t que d'opter par d\u00e9faut pour un rapport de 1:1 comme solution interm\u00e9diaire g\u00e9n\u00e9rique.<\/p>\n\n\n\n
\"Arbre<\/td>\n\"Bo\u00eete<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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 a modern production facility, CMN Transmission is dedicated entirely to the research and development, manufacturing, sales, and service of agricultural gearboxes. Over more than two decades of continuous operation, the company has grown into a globally recognized, reliable supplier in the agricultural power transmission industry, exporting to more than 60 destinations worldwide and serving customers across six continents.<\/p>\n

La gamme de produits de CMN Transmission est l'une des plus compl\u00e8tes propos\u00e9es par un fabricant sp\u00e9cialis\u00e9 dans les r\u00e9ducteurs pour broyeurs rotatifs. Elle comprend des r\u00e9ducteurs pour broyeurs rotatifs, faucheuses rotatives, tondeuses de finition, fraises rotatives, m\u00e9langeuses d'aliments, \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, entra\u00eenements 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, distributeurs d'aliments pour volailles et des r\u00e9ducteurs agricoles sur mesure, couvrant pr\u00e8s de mille sp\u00e9cifications. Sa capacit\u00e9 de production annuelle d\u00e9passe 500\u00a0000 unit\u00e9s, garantissant une disponibilit\u00e9 constante et des d\u00e9lais de livraison courts, m\u00eame pour les commandes importantes.<\/p>\n

    \n
  • Certified Quality Standards<\/strong>
    \nCE, ISO 9001, Environmental Management, and Occupational Health and Safety certifications are held and maintained across all product lines, providing the documented quality evidence required by institutional buyers, OEM approval programs, and regulatory import requirements in all major markets.<\/li>\n
  • Global Export Experience in 60+ Countries<\/strong>
    \nCMN Transmission exports to the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and many additional markets, with extensive experience navigating import documentation, phytosanitary requirements, and local certification needs for each destination.<\/li>\n
  • 500,000+ Units Annual Production Capacity<\/strong>
    \nHigh-volume production capability ensures that rotary cutter gearbox for sale inquiries from large distributors and OEM buyers can be fulfilled on time, with consistent quality across production batches. Short lead times and buffer stock availability for top-selling models minimize customer downtime during peak demand periods at the start of each cutting season.<\/li>\n
  • Application Engineering and Technical Support
    \nL'\u00e9quipe d'ing\u00e9nierie de CMN Transmission propose un service de conseil technique avant-vente pour v\u00e9rifier la compatibilit\u00e9 des produits et le choix du rapport de transmission, une assistance \u00e0 l'installation pour les configurations complexes et un support apr\u00e8s-vente pour les probl\u00e8mes rencontr\u00e9s sur le terrain. Ce niveau de service distingue CMN des importateurs de produits de base qui ne peuvent fournir que des fiches techniques g\u00e9n\u00e9riques, sans expertise sp\u00e9cifique pour \u00e9clairer les d\u00e9cisions d'achat.<\/li>\n
  • Competitive OEM and Distributor Pricing<\/strong>
    \nVolume pricing tiers, flexible minimum order quantities, and customization options allow CMN Transmission to serve both small independent dealers seeking single-unit replacement stock and large OEM manufacturers requiring thousands of units per year across multiple product specifications, with pricing structured to support competitive end-market positioning in all regions served.<\/li>\n
  • Robust Export Packaging and Logistics Support<\/strong>
    \nTous les produits destin\u00e9s \u00e0 l'exportation sont emball\u00e9s de mani\u00e8re \u00e0 r\u00e9sister aux contraintes m\u00e9caniques du transport maritime international par conteneur. Les unit\u00e9s individuelles sont prot\u00e9g\u00e9es par un double emballage en mousse, tandis que les exp\u00e9ditions en grande quantit\u00e9 sont palettis\u00e9es sur mesure. L'\u00e9quipe logistique de CMN Transmission \u00e9tablit la facture commerciale compl\u00e8te, la liste de colisage, le certificat d'origine et la d\u00e9claration CE afin de simplifier le d\u00e9douanement sur tous les march\u00e9s de destination et d'all\u00e9ger ainsi les d\u00e9marches administratives des importateurs et des distributeurs g\u00e9rant des commandes importantes et r\u00e9guli\u00e8res.<\/li>\n<\/ul>\n

    \"Fabricants<\/p>\n

    Foire aux questions<\/h2>\n

    Q: Is this RC-145 a direct bolt-on replacement for the original Omni RC-145 gearbox without modification?<\/strong>
    \nA: Yes. The CMN RC-145 is manufactured to match the critical dimensions of the original Omni unit, including the 260 mm flange diameter, 203.2 mm six-hole mounting bolt circle, 96.0 mm hub pilot, and 204.5 mm flange-to-hub-pilot dimension. No frame drilling, welding, or adapter plates are required for a standard installation on an existing Omni RC-145 equipped cutting deck. Always verify the specific dimensions of your machine against the published specification before installation if your cutter has been modified from OEM configuration.<\/p>\n

    Q: What type of oil should I use and what is the correct rotary cutter gearbox oil level?<\/strong>
    \nA: The RC-145 requires 1.8 L (60 oz.) of gear oil. SAE 90 GL-5 gear oil is the standard recommendation for temperate climates; SAE 85W-140 GL-5 is preferred for hot-climate heavy-duty applications where sustained high-load temperatures are expected. The correct oil level is at the bottom of the fill port threads when the unit is installed in its normal operating orientation. Check the level at every 50-hour service interval by removing the fill cap and confirming oil is visible at the port mouth. Do not overfill, as excess oil pressurizes the housing and accelerates seal wear.<\/p>\n

    Q: How do I select the correct rotary cutter gearbox ratio for my application?<\/strong>
    \nA : Choisissez le rapport de transmission en fonction de votre t\u00e2che de coupe principale. Un rapport de 1:1 offre une vitesse d'entr\u00e9e et de sortie identique et constitue le choix standard pour la plupart des coupes d'herbe et de v\u00e9g\u00e9tation l\u00e9g\u00e8re. Les rapports d\u00e9gressifs (1,21:1 entr\u00e9e\/sortie) augmentent le couple \u00e0 la lame pour le d\u00e9broussaillage intensif et la coupe de v\u00e9g\u00e9tation ligneuse de gros diam\u00e8tre. Les rapports sup\u00e9rieurs (1:1,21, 1:1,46, 1:1,92) augmentent la vitesse de la lame par rapport \u00e0 l'entr\u00e9e de la prise de force, ce qui peut am\u00e9liorer la qualit\u00e9 de coupe pour les travaux de finition ou lorsque l'inertie de la lame doit \u00eatre maintenue lors de changements rapides de vitesse. Contactez l'\u00e9quipe technique de CMN Transmission si vous n'\u00eates pas certain du rapport le mieux adapt\u00e9 \u00e0 la puissance de votre tracteur et aux conditions de coupe pr\u00e9vues.<\/p>\n

    Q: What is the maximum HP I can run through this gearbox for a 100 hp rotary cutter gearbox application?<\/strong>
    \nA : Le RC-145 est con\u00e7u pour supporter une puissance d'entr\u00e9e continue maximale de 181 ch (135 kW) \u00e0 la prise de force. Pour une application avec une bo\u00eete de vitesses de broyeur rotatif de 100 ch, l'unit\u00e9 fonctionne sans probl\u00e8me dans sa plage nominale, avec une marge de s\u00e9curit\u00e9 confortable. Les op\u00e9rateurs doivent v\u00e9rifier la puissance r\u00e9elle \u00e0 la prise de force de leur tracteur, g\u00e9n\u00e9ralement inf\u00e9rieure de 15 \u00e0 20 ch \u00e0 la puissance moteur indiqu\u00e9e dans les sp\u00e9cifications du tracteur, et s'assurer qu'elle ne d\u00e9passe pas 181 ch \u00e0 la prise de force en conditions de travail \u00e0 plein r\u00e9gime. Un fonctionnement prolong\u00e9 au-del\u00e0 de la puissance nominale r\u00e9duit la dur\u00e9e de vie des engrenages et des roulements et peut entra\u00eener une d\u00e9formation du carter en cas de surcharge thermique prolong\u00e9e.<\/p>\n

    Q: How often should I change the gear oil to prevent rotary cutter gearbox repair costs?<\/strong>
    \nA: Perform the first oil change at 50 operating hours on a new or rebuilt unit to remove initial break-in wear debris. After that, change the oil every 250 operating hours under normal conditions, or every 150 hours in high-temperature, heavy-duty applications such as sustained brush clearing in summer. Inspect the drained oil at each change for metal particles, a discoloured appearance indicating water contamination, or a burnt smell indicating overheating. Any of these indicators calls for a full internal inspection before the unit is returned to service to avoid expensive secondary damage to the gear and bearing assemblies.<\/p>\n

    Q: Can this gearbox be rebuilt in the field, and where can I source rotary cutter gearbox parts?<\/strong>
    \nR : La r\u00e9fection d'un r\u00e9ducteur de faucheuse rotative est \u00e0 la port\u00e9e d'un m\u00e9canicien agricole comp\u00e9tent disposant d'une presse et d'outils de base pour le montage des roulements. Les pi\u00e8ces les plus fr\u00e9quemment remplac\u00e9es sont les joints d'huile des arbres d'entr\u00e9e et de sortie (souvent rempla\u00e7ables sans d\u00e9montage complet), les roulements \u00e0 rouleaux coniques et la bague de serrage du boulon de cisaillement de l'accouplement de la transmission. CMN Transmission dispose d'une gamme compl\u00e8te de pi\u00e8ces d\u00e9tach\u00e9es pour r\u00e9ducteurs de faucheuses rotatives RC-145, incluant des kits de joints, des jeux de roulements et des paires d'engrenages coniques. Avant de commander, veuillez contacter notre service pi\u00e8ces d\u00e9tach\u00e9es en indiquant le num\u00e9ro de s\u00e9rie de votre appareil afin de confirmer les r\u00e9f\u00e9rences des pi\u00e8ces, car de l\u00e9g\u00e8res variations entre les lots de production peuvent affecter les sp\u00e9cifications des joints et des roulements.<\/p>\n

    Q: My gearbox is making a whining or grinding noise during operation. What does this indicate?<\/strong>
    \nA: A sustained whining sound that increases with PTO speed typically indicates bearing wear, particularly on the input shaft tapered roller bearing that carries the combined radial and thrust load from the bevel gear mesh. A grinding noise accompanied by vibration usually indicates gear tooth damage, which can result from operating with insufficient oil, a contaminated oil bath, or sustained overload beyond the rated HP. Stop operation immediately and check the oil level and condition first. If the oil is correct, the unit will require disassembly for internal inspection. Continuing to operate a noisy gearbox typically results in rapid escalation to catastrophic failure and replacement rather than repair.<\/p>\n

    Q: Is the RC-145 suitable for use as a 75 hp rotary cutter gearbox and a 40 hp rotary cutter gearbox application on the same farm with different tractors?<\/strong>
    \nR : Oui. La plage de puissance nominale du RC-145, de 71 \u00e0 181 ch, couvre les entr\u00e9es de prise de force (PDF) de tracteurs de 40 et 75 ch sans aucune modification. Les engrenages et roulements internes sont dimensionn\u00e9s pour la limite sup\u00e9rieure de cette plage\u00a0; un fonctionnement entre 40 et 75 ch repr\u00e9sente donc un cycle de service conservateur qui prolongera la dur\u00e9e de vie de l'unit\u00e9 par rapport \u00e0 un fonctionnement continu \u00e0 haute puissance. Assurez-vous que la transmission reliant le tracteur de faible puissance \u00e0 la bo\u00eete de vitesses est dimensionn\u00e9e en cons\u00e9quence pour le couple maximal de la PDF de ce tracteur \u00e0 la vitesse de PDF s\u00e9lectionn\u00e9e.<\/p>\n

    Q: Does CMN Transmission offer volume discounts for dealers and OEM purchasers buying rotary cutter gearboxes in bulk?<\/strong>
    \nA: Yes. CMN Transmission offers tiered pricing for OEM partners, agricultural machinery distributors, and fleet maintenance organizations purchasing the RC-145 and other products from our range in volume. Minimum order quantities for discounted pricing, lead time commitments, and customization options including specific shaft configurations, alternate coatings, and custom mounting flanges are all available for discussion. Contact our export sales team directly with your annual volume requirements and delivery region to receive a tailored quotation. We currently serve rotary cutter gearbox suppliers and distributors in more than 60 countries worldwide.<\/p>\n

    Q: What certifications does the RC-145 Rotary Cutter Gearbox hold, and does it comply with international import requirements?<\/strong>
    \nA: CMN Transmission poss\u00e8de les certifications CE, ISO 9001 (management de la qualit\u00e9), ISO 9001 (management environnemental) et ISO 9001 (sant\u00e9 et s\u00e9curit\u00e9 au travail) pour la fabrication du RC-145 et de tous les autres produits de notre gamme. La certification CE r\u00e9pond aux exigences de la directive europ\u00e9enne sur les machines. La certification ISO 9001 fournit les preuves document\u00e9es de notre syst\u00e8me de management de la qualit\u00e9, requises par de nombreux programmes d'achat institutionnels et proc\u00e9dures d'agr\u00e9ment des fournisseurs OEM. Pour les march\u00e9s ayant des exigences sp\u00e9cifiques en mati\u00e8re de certification \u00e0 l'importation, veuillez contacter notre \u00e9quipe de conformit\u00e9 \u00e0 l'exportation en pr\u00e9cisant les normes applicables du pays de destination\u00a0; nous vous fournirons la documentation n\u00e9cessaire.<\/p>\n

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

    Avis clients<\/h2>\n

    James Whitaker, Ranch Management, United States<\/strong>
    \n\u00ab Nous exploitons un \u00e9levage bovin de 485 hectares au Texas et la bo\u00eete de vitesses d'origine de notre faucheuse de 4,5 m\u00e8tres a rendu l'\u00e2me apr\u00e8s environ quatre saisons d'utilisation intensive. Nous avons command\u00e9 ce mod\u00e8le RC-145 de remplacement en mars dernier. L'installation a pris un apr\u00e8s-midi \u00e0 deux, avec un cric hydraulique, sans aucun probl\u00e8me de compatibilit\u00e9 des boulons. Six mois plus tard, tract\u00e9e par un tracteur de 130 ch sur des p\u00e2turages accident\u00e9s envahis par la repousse des c\u00e8dres, elle fonctionne parfaitement. Aucune fuite, aucun bruit, et elle chauffe moins que l'ancienne. Le prix \u00e9tait correct et la livraison plus rapide que pr\u00e9vu. Du vrai mat\u00e9riel agricole robuste. \u00bb<\/p>\n

    Derek Pollock, Agricultural Parts Dealer, Canada<\/strong>
    \n\u00ab Je suis concessionnaire dans le sud de l'Ontario et je garde quelques unit\u00e9s RC-145 en stock pour les remplacements d'urgence. L'emballage est excellent\u00a0: double carton avec mousse aux coins pour \u00e9viter tout dommage \u00e0 l'exp\u00e9dition, ce qui est crucial lors de l'importation. Les clients confirment que la compatibilit\u00e9 est parfaite, aussi bien avec l'Omni RC-145 qu'avec l'\u00e9quivalent Rhino. Un client a remplac\u00e9 la sienne sur une d\u00e9broussailleuse \u00e0 deux lames d'environ 175\u00a0ch et elle fonctionne sans probl\u00e8me depuis deux saisons de coupe. CMN a r\u00e9pondu rapidement et pr\u00e9cis\u00e9ment \u00e0 mes questions techniques avant ma premi\u00e8re commande. Je continuerai \u00e0 commander chez eux. \u00bb<\/p>\n

    Paulo Henrique Moraes, Sugarcane Grower, Brazil<\/strong>
    \n\u00ab Je travaille dans les plantations de canne \u00e0 sucre \u00e0 l'int\u00e9rieur de l'\u00c9tat de S\u00e3o Paulo et j'ai d\u00fb remplacer le r\u00e9ducteur de ma machine de coupe apr\u00e8s qu'une pierre ait endommag\u00e9 l'ensemble d'origine. J'ai re\u00e7u ce mod\u00e8le RC-145 en 18 jours. Le montage a \u00e9t\u00e9 simple et rapide, toutes les pi\u00e8ces s'embo\u00eetant parfaitement sans aucune modification. J'ai effectu\u00e9 trois r\u00e9coltes depuis, soit plus de 600 heures de travail, et la seule d\u00e9pense a \u00e9t\u00e9 la vidange d'huile, comme recommand\u00e9. La qualit\u00e9 est bien sup\u00e9rieure \u00e0 mes attentes pour une pi\u00e8ce de rechange. Je n'h\u00e9siterai pas \u00e0 en racheter une en cas de besoin. \u00bb<\/p>\n

    Colin Bradshaw, Roadside Maintenance, United Kingdom<\/strong>
    \n\u00ab Nous g\u00e9rons des contrats d'entretien des accotements pour un conseil de comt\u00e9 dans les West Midlands et notre flotte comprend trois d\u00e9broussailleuses Twose. L'automne dernier, nous avons remplac\u00e9 la bo\u00eete de vitesses de la plus ancienne machine par cette RC-145. Le joint \u00e0 triple l\u00e8vre a \u00e9t\u00e9 le principal crit\u00e8re de notre choix, car nous travaillons dans des conditions humides pendant la majeure partie de la saison et les anciens joints \u00e0 simple l\u00e8vre fuyaient syst\u00e9matiquement apr\u00e8s six mois. Apr\u00e8s un hiver et un printemps complets, la bo\u00eete est rest\u00e9e parfaitement \u00e9tanche et il n'y a pas une goutte d'huile sur le plateau. Le m\u00e9canicien a d\u00e9clar\u00e9 que c'\u00e9tait le remplacement de bo\u00eete de vitesses le plus facile qu'il ait effectu\u00e9 depuis des ann\u00e9es, car tout s'est align\u00e9 du premier coup. \u00bb<\/p>\n

    Markus Hofbauer, Roadside Maintenance, Germany<\/strong>
    \n\u00ab Je suis entrepreneur agricole et j'utilise plusieurs machines d'entretien des espaces verts et des accotements en Bavi\u00e8re. Le groupe Omni d'origine de l'une de nos faucheuses rotatives a rendu l'\u00e2me apr\u00e8s quatre ans d'utilisation intensive. Ce groupe de remplacement RC-145 a fonctionn\u00e9 parfaitement d\u00e8s son installation. La commande et les formalit\u00e9s douani\u00e8res se sont d\u00e9roul\u00e9es sans le moindre probl\u00e8me. Apr\u00e8s huit mois, aucun souci d'\u00e9tanch\u00e9it\u00e9 ni de roulement, m\u00eame en travaillant sur des pentes humides. Pour un groupe de remplacement, la qualit\u00e9 est impressionnante. \u00bb<\/p>\n

    Andrew Carmichael, Pasture Management, Australia
    \n\u00ab Nous exploitons une ferme c\u00e9r\u00e9ali\u00e8re et ovine de 1\u00a0200 hectares en Nouvelle-Galles du Sud et utilisons deux faucheuses rotatives de 3,65 m\u00e8tres pour la gestion des p\u00e2turages et l'entretien des pare-feu. L'une des machines a n\u00e9cessit\u00e9 le remplacement de sa bo\u00eete de vitesses apr\u00e8s qu'un choc avec un poteau de cl\u00f4ture en b\u00e9ton enterr\u00e9 ait endommag\u00e9 le carter de la machine d'origine. Cette machine de remplacement CMN s'est install\u00e9e sans probl\u00e8me et a r\u00e9sist\u00e9 \u00e0 un programme complet de fauchage de pare-feu pendant l'\u00e9t\u00e9 dans des parcelles s\u00e8ches et caillouteuses, soit exactement le type d'utilisation qui met hors service les machines de qualit\u00e9 inf\u00e9rieure en une saison. Le bouchon indicateur de niveau d'huile est un d\u00e9tail appr\u00e9ciable, qui permet de gagner du temps lors des v\u00e9rifications avant la prise de poste. La livraison dans la r\u00e9gion de Nouvelle-Galles du Sud a pris environ trois semaines, ce qui \u00e9tait acceptable compte tenu de la provenance. \u00bb<\/p>\n

    Giuseppe Ferrante, Vineyard Maintenance, Italy<\/strong>
    \n\u00ab Nous poss\u00e9dons une coop\u00e9rative agricole dans les Pouilles et utilisons des faucheuses rotatives pour l'entretien de nos vignes et oliveraies. Le service de pr\u00e9commande a \u00e9t\u00e9 tr\u00e8s professionnel\u00a0: le technicien a confirm\u00e9 la compatibilit\u00e9 avec notre machine avant m\u00eame le paiement, ce qui a \u00e9t\u00e9 d\u00e9terminant. La bo\u00eete de vitesses RC-145 est arriv\u00e9e en 22\u00a0jours, parfaitement emball\u00e9e, et le montage a \u00e9t\u00e9 rapide. Apr\u00e8s une saison compl\u00e8te d'utilisation, aucun probl\u00e8me \u00e0 signaler. Sa qualit\u00e9 de fabrication est sup\u00e9rieure \u00e0 celle d'une pi\u00e8ce de rechange d'une autre marque que nous avions test\u00e9e auparavant. \u00bb<\/p>\n

    Roberto Alvarez, Agricultural Machinery, Argentina<\/strong>
    \n\u00ab Je suis importateur de machines agricoles \u00e0 Cordoue et j'ai plusieurs clients qui utilisent de grandes faucheuses rotatives. J'ai pass\u00e9 une commande d'essai de 3 unit\u00e9s RC-145 en septembre. Les documents d'exportation \u00e9taient conformes et le d\u00e9douanement s'est d\u00e9roul\u00e9 sans probl\u00e8me. Mes trois clients, qui ont install\u00e9 les machines, sont pleinement satisfaits\u00a0: l'un d'eux a d\u00e9j\u00e0 400 heures d'utilisation avec la faucheuse pour le traitement du soja apr\u00e8s la r\u00e9colte, et un autre l'utilise pour le d\u00e9broussaillage des bords de route. Le rapport qualit\u00e9-prix est excellent. J'ai d'ailleurs d\u00e9j\u00e0 pass\u00e9 une deuxi\u00e8me commande de 6 unit\u00e9s. \u00bb<\/p>\n

    Suresh Venkataraman, Entretien des routes, Inde<\/strong>
    \n\u00ab Je travaille pour le service des routes du comt\u00e9 de Karnataka et nous entretenons environ 800 km d'accotements de routes rurales avec des broyeurs rotatifs. Nous avons test\u00e9 une unit\u00e9 RC-145 sur notre machine la plus exigeante, travaillant dans un sol lat\u00e9ritique parsem\u00e9 de roches. Apr\u00e8s six mois et environ 350 heures de fonctionnement, la bo\u00eete de vitesses fonctionne parfaitement, sans d\u00e9faillance d'\u00e9tanch\u00e9it\u00e9 ni bruit anormal. La conception \u00e0 bain d'huile avec orifices de lubrification du carter assure une lubrification optimale des paliers inf\u00e9rieurs, m\u00eame lors de longs trajets en pente. Nous pr\u00e9voyons maintenant d'adopter cette bo\u00eete de vitesses comme standard pour notre prochain cycle de renouvellement de flotte. \u00bb<\/p>","protected":false},"excerpt":{"rendered":"

    The RC-145 Rotary Cutter Gearbox Replacement for Omni RC-145 Gearbox is a heavy-duty agricultural gearbox engineered specifically for high-demand cutting machinery in the farming and land-management industries. Designed as a direct drop-in replacement for the OEM Omni RC-145 unit, this rotary cutter gearbox drives rotary knives and cutting decks for grass cutting, straw crushing, and brush clearing operations across a wide range of field conditions. Its bevel-gear architecture and triple-lip spring-loaded seals allow it to operate reliably in muddy paddocks, roadside ditches, and wetland areas where conventional drive units fail prematurely.<\/p>","protected":false},"featured_media":7851,"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-7967","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\/7967","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=7967"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media\/7851"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media?parent=7967"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_brand?post=7967"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_cat?post=7967"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_tag?post=7967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}