{"id":8176,"date":"2026-09-15T10:06:25","date_gmt":"2026-09-15T10:06:25","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=8176"},"modified":"2026-09-18T08:19:55","modified_gmt":"2026-09-18T08:19:55","slug":"l-25j-fertilizer-spreader-gearbox-ratio-13-replacement-for-comer-l-25j-gearbox","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/it\/prodotto\/l-25j-fertilizer-spreader-gearbox-ratio-13-replacement-for-comer-l-25j-gearbox\/","title":{"rendered":"Riduttore per spandiconcime L-25J con rapporto 1:3, ricambio per il riduttore Comer L-25J."},"content":{"rendered":"

The L-25J Fertilizer Spreader Gearbox Ratio 1:3 Replacement for Comer L-25J Gearbox, also known as a fertilizer distributor gearbox, is an essential component of agricultural machinery specifically engineered for soil preparation, crop treatment, and fertilizer spreading tasks. Centrally positioned within the spreading unit, it efficiently transmits power from the tractor’s power take-off (PTO) shaft to the spinning discs or augers that evenly distribute fertilizer, lime, seed, or granular materials across cultivated land. Designed to handle demanding fieldwork conditions, this agricultural gearbox features a rugged aluminium housing that is both lightweight and corrosion-resistant, delivering outstanding durability with a total weight of just 4.1 kg. Its 1:3 step-up ratio converts tractor PTO speed into the higher rotational velocity required for efficient and uniform spreading, making it one of the most practical fertilizer spreader gearboxes available for modern farming operations.<\/p>\n

Rated at a maximum input power of 5 kW and a maximum input rotation speed of 540 r\/min, this gearbox for fertilizer spreader applications is engineered with a series of precision-machined gears and shafts that optimise rotational speed and output torque to meet diverse spreading requirements. With a max output torque of 30 N\u00b7m and compatibility with standard 1-3\/8 inch 6-spline PTO connections, it offers seamless integration into a wide variety of tractor-mounted spreaders. Beyond fertilizer distribution, its robust design makes it equally suitable for mowers, multi-row rotary tillers, band saws, and various other agricultural implement applications. The gearbox is supplied dry (without oil), using SAE 90EP gear oil with a maximum capacity of 0.35 L, and features a scheduled oil-change interval of 500 hours, or at least once annually, ensuring low-maintenance operation and long service life across intensive seasonal use.<\/p>\n

\"L-25J<\/p>\n

Parametri tecnici<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Modello<\/strong><\/td>\nCambio L-25J 1:3<\/td>\n<\/tr>\n
Sostituire il marchio<\/strong><\/td>\nComer<\/td>\n<\/tr>\n
Dettagli del prodotto<\/strong><\/td>\n-Tutti i cambi vengono forniti senza olio.
\n-Primo cambio dell'olio dopo 50-70 ore di funzionamento, poi dopo 500-700 ore di funzionamento, o almeno una volta all'anno.
\n-Contattateci per conoscere la potenza a un diverso numero di giri.<\/td>\n<\/tr>\n
Campo di applicazione<\/strong><\/td>\n\n
- Diverse applicazioni (agricole)
\n-Tosaerba
\n-Motozappe rotative multifilari
\n-Seghe a nastro<\/div>\n<\/td>\n<\/tr>\n
Fattore di rapporto<\/strong><\/td>\n1:3<\/td>\n<\/tr>\n
Potenza massima in ingresso<\/strong><\/td>\n5 kW<\/td>\n<\/tr>\n
Velocit\u00e0 massima di rotazione in ingresso<\/strong><\/td>\n540 giri\/min<\/td>\n<\/tr>\n
Potenza massima in uscita<\/strong><\/td>\n7 CV<\/td>\n<\/tr>\n
Coppia massima in uscita<\/strong><\/td>\n30 N\u00b7m<\/td>\n<\/tr>\n
Collegamento 1 Diametro esterno in pollici e scanalature<\/strong><\/td>\n1.3\/8-6<\/td>\n<\/tr>\n
Diametro esterno della connessione 2<\/strong><\/td>\n22 mm<\/td>\n<\/tr>\n
Contiene olio<\/strong><\/td>\nNO<\/td>\n<\/tr>\n
Capacit\u00e0 massima dell'olio<\/strong><\/td>\n0,35 L<\/td>\n<\/tr>\n
Cambio olio massimo<\/strong>\u00a0intervallo<\/strong><\/td>\n500 ore<\/td>\n<\/tr>\n
Grado di viscosit\u00e0 SAE dell'olio<\/strong><\/td>\n90EP<\/td>\n<\/tr>\n
Materiale per l'edilizia<\/strong><\/td>\nAlluminio<\/td>\n<\/tr>\n
Peso<\/strong><\/td>\n4,1 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Abbiamo completato un audit dei fornitori e una verifica aziendale da parte di terzi, con il supporto di SGS\/T\u00dcV Rheinland. Questa verifica consente agli acquirenti di esaminare l'identit\u00e0 aziendale, le attivit\u00e0 operative, il profilo del fornitore e la capacit\u00e0 produttiva generale. Su richiesta, \u00e8 possibile fornire report di ispezione specifici per il prodotto, documenti relativi ai materiali o registri di conformit\u00e0.<\/p>\n

Quantit\u00e0 minima d'ordine (MOQ):<\/strong>\u00a0Impostabile in modo flessibile in base al tipo di prodotto e alla quantit\u00e0 dell'ordine.<\/p>\n

Esempi:<\/strong>\u00a0I nuovi clienti possono richiedere da 1 a 5 campioni in circostanze appropriate.<\/p>\n

Ordini misti:<\/strong>\u00a0\u00c8 possibile combinare modelli diversi; l'importo totale dell'ordine deve raggiungere approssimativamente $1.500.<\/p>\n

Piccoli ordini:<\/strong>\u00a0Accettiamo ordini a partire da 1-2 pezzi, ma il prezzo unitario sar\u00e0 relativamente pi\u00f9 alto.<\/p>\n

Tempi di consegna:<\/strong>\u00a010-25 giorni lavorativi per i componenti standard; 20-45 giorni lavorativi per i componenti personalizzati; 45-120 giorni lavorativi per le apparecchiature realizzate su progetto.<\/p>\n

Condizioni commerciali:<\/strong>\u00a0I termini EXW, FOB, CIF e DAP sono generalmente supportati; i termini FCA, CFR, CPT, CIP e DDP possono essere negoziati specificamente.<\/p>\n

Dimensioni del riduttore dello spandiconcime L-25J<\/h2>\n

\"Dimensioni \"Dimensioni \"Dimensioni<\/p>\n

Key Features of the L-25J Fertilizer Spreader Gearbox 1:3<\/h2>\n

1. Compatibilit\u00e0 tra interfaccia PTO e scanalatura
\nThe L-25J input shaft is machined to match the standard 1-3\/8 inch 6-spline (Z6) tractor PTO interface, the most widely used connection in global agricultural machinery. This precise spline compatibility prevents vibration, eliminates misalignment risk, and significantly reduces wear on both the gearbox and the connecting PTO driveline shaft. The result is smooth, consistent power delivery from the tractor to the spreading mechanism throughout the entire operational cycle.<\/p>\n

2. Optimised 1:3 Gear Ratio for Spreading Performance
\nThe 1:3 step-up ratio is specifically calibrated to convert the tractor PTO’s 540 RPM input into the higher rotational speed required by fertilizer spreading discs and agitators. This ratio ensures that spinner discs rotate at the ideal RPM for wide, even distribution of granular fertilizer, lime, seed, and other materials. The precise ratio configuration directly impacts spreading width uniformity, helping operators achieve consistent field coverage and reduce input material waste during every spreading pass.<\/p>\n

3. Struttura in alluminio resistente alla corrosione
\nFertilizers, lime, and agrochemicals are chemically aggressive and can cause rapid corrosion of unprotected metal components. The L-25J features a precision die-cast aluminium housing that offers an inherently corrosion-resistant surface, significantly outperforming uncoated steel in fertilizer environments. Combined with high-durability oil seals and sealed bearings, the housing prevents chemical ingress during extended spreading operations, protecting the internal gear train and ensuring the long service life expected from a professional-grade agricultural gearbox for fertilizer spreader duty.<\/p>\n

4. Versatile Disc and Agitator Drive Integration
\nThe L-25J is designed for direct integration into centrifugal disc-type fertilizer spreaders, transmitting drive to the main spinning discs that broadcast fertilizer across the field. Its output shaft configuration also supports integration with agitator systems in hopper-type spreaders, where an agitator prevents bridging or blockage of granular materials, maintaining a steady, uninterrupted flow to the spinning disc. This dual-function capability makes the gearbox compatible with a broad range of single-disc and twin-disc spreader designs found across the global market.<\/p>\n

5. Wide Range of Agricultural Applications
\nBeyond its primary fertilizer spreading role, the L-25J’s robust construction and standardised PTO interface make it a versatile power transmission component across multiple agricultural machinery categories. It is confirmed suitable for mowers, multi-row rotary tillers, and band saws, and its performance characteristics align well with a broad range of field-mounted, PTO-driven implements. As one of the leading fertilizer spreader gearbox manufacturers, CMN Transmission ensures that each unit undergoes full quality verification before shipment, guaranteeing operational reliability whether used in grain farming, horticulture, turf management, or soil amendment applications.<\/p>\n

6. Field-Ready Serviceability and Lubrication Access
\nRoutine maintenance in the field demands accessible service points, and the L-25J delivers with clearly positioned fill, drain, and level check plugs that make oil servicing straightforward without requiring specialised tools or removing the gearbox from the machine. The first oil change is scheduled at 50-70 operating hours, followed by standard intervals of 500-700 hours or annually, using SAE 90EP gear oil. The compact 0.35 L oil capacity minimises lubricant cost while maintaining full lubrication of the internal gear set and bearings throughout extended operational periods.<\/p>\n

\"L-25J<\/p>\n

Working Principle<\/h2>\n

Power enters the L-25J through the input shaft, which is engineered with a standard 1-3\/8 inch 6-spline profile to mate directly with the tractor’s 540 RPM PTO driveline. As the tractor engine runs, rotational energy travels through the PTO shaft and driveline coupling into the gearbox input. The input shaft is supported by precision-grade bearings that absorb radial and axial loads generated during operation, ensuring smooth torque transfer with minimal vibration even during field operation over uneven terrain. This direct mechanical connection is the foundation of reliable, loss-free power delivery to the spreading mechanism.<\/p>\n

Inside the aluminium housing, the input shaft drives a precision bevel gear set that converts the rotational axis from the PTO’s horizontal alignment to the vertical or angular output axis required to drive the fertilizer spreading disc. The 1:3 step-up ratio means that for every revolution of the input shaft, the output shaft rotates three times, increasing the rotational speed to the level required for effective broadcast spreading. The tooth geometry and heat treatment of the bevel gears are designed for smooth, low-noise meshing under the torque loads generated during continuous fertilizer spreading operations. This gear set is the mechanical heart of the fertilizer gearbox and is the primary determinant of spreading speed and distribution width.<\/p>\n

The gearbox output shaft, with a 22 mm outside diameter, delivers the converted rotational motion directly to the spreading disc or auger. At a maximum output torque of 30 N\u00b7m, the L-25J provides sufficient rotational force to drive standard centrifugal spreading discs even when handling dense, heavy granular materials such as coarse limestone or fertilizer blends. The output connection is secured to the disc hub via the shaft fitting, and the compact shaft geometry allows for integration into the tight mechanical envelope typical of mounted fertilizer spreader designs. This direct, shaft-to-disc drive delivers high mechanical efficiency compared to belt or chain-driven alternatives.<\/p>\n

The internal gear set and bearings are lubricated by an oil-bath system using a maximum of 0.35 L of SAE 90EP gear oil. This splash lubrication ensures that all rotating and meshing surfaces receive a continuous film of lubricant during operation, dramatically reducing friction-induced wear and heat generation. The oil also functions as a thermal buffer, absorbing and dissipating heat generated by gear meshing loads. High-quality oil seals at both the input and output shaft locations prevent lubricant leakage and exclude dust, moisture, and fertilizer dust from the gear chamber. First-fill oil is not included; operators must add the correct grade prior to initial commissioning, and the first oil change is scheduled at 50-70 operating hours to flush initial break-in wear particles from the system.<\/p>\n

The die-cast aluminium housing provides the structural framework that maintains precise gear alignment under the dynamic loads of field operation. Four M11 bolt holes on a 108 mm x 108 mm mounting pattern allow the gearbox to be securely bolted to the spreader frame, preventing movement or deflection under operating loads. The housing’s ribbed external geometry provides additional stiffness without adding unnecessary weight, keeping the total gearbox mass at 4.1 kg. This low weight reduces the overall implement weight and the forces exerted on the tractor’s three-point hitch linkage, improving tractor stability during headland turns and transport between fields. The aluminium material’s inherent resistance to fertilizer chemical attack further enhances structural longevity in the harsh operating environment of fertilizer spreading.<\/p>\n

\"Riduttore<\/p>\n

Applications of the L-25J Fertilizer Distributor Gearbox<\/h2>\n
\n

Gestione di prati e tappeti erbosi<\/h3>\n

Professional turf managers at sports fields, golf courses, and municipal parks require precise, consistent fertilizer application to maintain high-quality grass surfaces. The L-25J fertilizer spreader gearbox supports this demanding application by providing the steady disc-drive performance needed for uniform granular fertilizer distribution across tightly managed turf areas. Its corrosion-resistant aluminium housing withstands the chemical environment of modern turf fertilizer and slow-release fertilizer blends, while the compact dimensions make it compatible with the smaller tractor-mounted spreader units typical of professional turf and amenity grounds maintenance operations.<\/p>\n<\/div>\n

\n

Orticoltura e vivai<\/h3>\n

Greenhouse and nursery operations demand accurate fertilizer application across densely planted beds of ornamental plants, potted crops, and young transplants where nutrient variability directly impacts product quality and commercial value. The L-25J’s precise gear ratio and reliable power transmission enable controlled granular fertilizer spreading in these sensitive environments, whether applied to open nursery beds or glasshouse production rows using compact tractor-mounted spreaders. Its maintenance-friendly design reduces downtime during peak production periods when consistent feeding schedules are critical to crop performance.<\/p>\n

\n

Landscaping and Garden Applications<\/h3>\n

For commercial landscaping contractors and large-scale garden operations, the ability to distribute fertilizer, seed, and granular soil conditioners evenly across ornamental beds, flower borders, and amenity planting areas is essential for maintaining visual standards and plant health. The L-25J gearbox supports small-tractor or compact-utility-tractor mounted spreaders used in these applications, delivering controlled, even distribution across irregular planted areas. Its lightweight aluminium design keeps the overall spreader weight low, allowing operation with smaller horsepower tractors common in landscaping and estate management applications where garden aesthetics and ground preservation are priorities.<\/p>\n<\/div>\n<\/div>\n

\n

Gestione dei pascoli<\/h3>\n

In livestock farming and dairy operations, maintaining productive pastures through regular fertilizer application is essential for sustaining high-quality forage yield throughout the grazing season. Tractor-mounted fertilizer spreaders equipped with the L-25J gearbox deliver uniform distribution of nitrogen and compound fertilizers across pasture fields, promoting dense, nutritious grass growth that supports healthy livestock grazing and reduces the need for supplementary feed. The gearbox’s reliable operation ensures that spreading capacity can be maintained efficiently across large grazing areas with minimal downtime.<\/p>\n

\n

Grain Farming<\/h3>\n

In large-scale grain production for crops including wheat, corn, barley, rice, and soybeans, precise and uniform fertilizer application is critical to achieving optimal nutrient uptake and maximum yields. The L-25J provides the consistent disc speed and torque needed for even broadcast spreading across wide grain fields, helping producers apply nitrogen, phosphorus, and potassium blends efficiently across every hectare. Accurate application directly reduces input costs and minimises the risk of over-application leading to nutrient runoff and environmental harm.<\/p>\n<\/div>\n

\n

Coltivazione di ortaggi<\/h3>\n

Vegetable crops require carefully balanced nutrient programmes applied with precision to support rapid growth and consistent produce quality. The L-25J enables tractor-mounted fertilizer spreaders to deliver granular fertilizer evenly across vegetable beds and open-field rows, ensuring uniform nutrient distribution without damaging sensitive crops. Its reliable power transmission maintains consistent disc RPM even when operating at varying ground speeds, which is important for achieving the application rate accuracy demanded in commercial vegetable production for domestic and export markets.<\/p>\n<\/div>\n

\n

Coltivazione della frutta<\/h3>\n

Fruit crops including strawberries, melons, and soft fruit plantations benefit from timely and precise granular fertilizer application throughout the growing season. The L-25J riduttore dello spandiconcime<\/strong><\/a> drives the spreading disc with the rotational speed and torque necessary to broadcast fertilizer consistently across fruit rows, including along field margins and around planting beds. Its compact aluminium construction and low weight make it compatible with the smaller tractor implements often used in fruit farm operations where maneuverability and precision are prioritised over raw spreading capacity.<\/p>\n<\/div>\n<\/div>\n

\n

Frutteti e vigneti<\/h3>\n

Tree fruit orchards and vineyards require targeted, precision fertilizer application around individual root zones without disturbing or damaging delicate surface root systems. Tractor-mounted spreaders fitted with the L-25J agricultural gearbox provide the spreading accuracy needed to apply granular nutrients to orchard rows and vine inter-rows efficiently, supporting fruit set, development, and canopy health. The gearbox’s robust construction ensures consistent performance across the undulating terrain and narrow row widths typical of orchard and vineyard operations, delivering reliable power transmission throughout long seasonal spreading programmes.<\/p>\n<\/div>\n

\n

Soil Amendments and Lime Spreading<\/h3>\n

Beyond standard granular fertilizers, the L-25J is well-suited for distributing heavier soil amendment materials such as agricultural lime, ground limestone, dolomite, and granulated compost. These materials are denser than typical granular fertilizers and require a gearbox that can sustain consistent disc drive torque even under the higher disc loading that coarse, dense amendment materials generate. The L-25J’s maximum output torque of 30 N\u00b7m and robust aluminium housing construction provide the mechanical resilience necessary for sustained lime-spreading operations across acidic arable land, pasture fields, or degraded soils requiring ph correction and structural improvement.<\/p>\n<\/div>\n

<\/div>\n

\"Applicazioni<\/p>\n

Fasi di installazione<\/h2>\n

1. Safety Preparation and Equipment Check
\nBefore starting any installation work, ensure the tractor is switched off, the PTO is fully disengaged, and the parking brake is applied. Allow all rotating components on the spreader to come to a complete stop before approaching the gearbox mounting area. Gather the required tools including an appropriately rated torque wrench, spanner set, and cleaning rags. Confirm that the replacement L-25J gearbox matches the original Comer L-25J specifications by checking the ratio, shaft sizes, and bolt pattern dimensions against the spreader manufacturer’s documentation before proceeding.<\/p>\n

2. Rimuovere il vecchio cambio
\nDisconnect the PTO driveline shaft from the gearbox input by releasing the quick-release collar or removing the connecting hardware as appropriate for the spreader design. Remove the spreading disc from the output shaft by unfastening the disc retaining bolts or circlip. Drain the old gearbox oil by removing the drain plug and disposing of the used oil according to local environmental regulations. Once the oil is drained and the shaft connections are free, remove the four mounting bolts that secure the gearbox to the spreader frame and carefully extract the old gearbox unit from its mounting location.<\/p>\n

3. Clean the Mounting Area and Inspect
\nWith the old gearbox removed, thoroughly clean the spreader’s mounting bracket and the surrounding area of any residual oil, fertilizer dust, and corrosion. Inspect the mounting bracket for cracks, deformation, or damaged threads that could compromise the security of the replacement gearbox. Verify that the four mounting bolt holes are clean and undamaged. Check the PTO driveline shaft for wear or damage at the spline section, and replace the driveline coupling or PTO shaft if significant wear is evident, as a worn driveline connection will reduce the service life of the new gearbox input shaft spline.<\/p>\n

4. Mount the New L-25J Gearbox
\nPosition the new L-25J gearbox onto the spreader mounting bracket, aligning the four M11 bolt holes with the corresponding holes in the bracket. Insert the mounting bolts and tighten them progressively in a cross pattern to ensure even clamping load and to prevent the housing from distorting as the bolts are torqued. Tighten to the torque value specified in the spreader manufacturer’s documentation. Confirm that the gearbox sits flush and secure against the mounting surface with no gaps or movement before proceeding to shaft connection steps.<\/p>\n

5. Connect the PTO Driveline Shaft
\nSlide the PTO driveline shaft coupling onto the L-25J input shaft, ensuring the 1-3\/8 inch 6-spline profile fully engages and the quick-release locking collar clicks securely into its retaining groove. Verify that the driveline shaft is at the correct operating angle and that the shaft telescopes within its designed operating range at the working attachment angle. Excessive driveline angles or inadequate telescoping overlap can cause vibration, premature wear, and gearbox damage. Where required, check that the PTO shaft guard is in good condition and correctly fitted over the entire exposed length of the driveline.<\/p>\n

6. Fill with SAE 90EP Gear Oil
\nThe L-25J is supplied dry without oil. Before operation, remove the oil fill plug and add clean SAE 90EP gear oil up to the level indicated by the level plug or sight indicator, taking care not to exceed the maximum capacity of 0.35 L. Over-filling can cause excessive internal oil churning, overheating, and oil seal failure. Use only the specified SAE 90EP grade to ensure correct viscosity for the operating speed and temperature range of the gearbox. Reinstall the fill plug securely, wipe the housing clean, and check for any immediate leakage at the fill plug and oil seal locations before proceeding to the initial run-in check.<\/p>\n

7. Refit Spreading Disc and Conduct Initial Run Check
\nRefit the spreading disc to the gearbox output shaft, securing it with the correct retaining hardware to the manufacturer’s specified torque. With the spreader positioned safely away from personnel, start the tractor and engage the PTO at low speed to perform an initial run-in check. Observe the gearbox for any unusual noise, vibration, or oil leakage during the first five minutes of operation. Gradually increase to normal operating PTO speed and confirm smooth, consistent disc rotation. After the initial 50-70 operating hours, perform the first oil change to flush any metal particles from the break-in period, then continue with standard 500-hour oil change intervals.<\/p>\n

\"Riduttore<\/p>\n

Fertilizer Spreader Gearbox vs. Rotary Tiller Gearbox<\/h2>\n
\n
\n

Che cos'\u00e8 un riduttore per spandiconcime?<\/h3>\n

A\u00a0fertilizer spreader gearbox, also called a fertilizer distributor gearbox, is an essential component of agricultural machinery specifically designed for soil preparation, crop treatment, and fertilizer spreading. Positioned centrally on the spreader frame, it transmits power from the tractor’s PTO to the spinning discs or augers that distribute fertilizer evenly across fields. Engineered for durability and reliability, these gearboxes are equipped with precision gear sets that convert PTO speed into the higher rotational output required for effective broadcast spreading of granular fertilizer, lime, seed, and soil amendments. Built to operate reliably across intensive seasonal spreading programmes, the fertilizer spreader gearbox plays a critical role in precision nutrient management for modern agriculture.<\/p>\n

Dettagli<\/h4>\n