L-25J 化肥撒布机变速箱，速比 1:3，可替代 Comer L-25J 变速箱

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.

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·m 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.

技术参数

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示例： 新客户在适当情况下可申请 1-5 个样品。

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L-25J 型肥料撒布机变速箱尺寸

Key Features of the L-25J Fertilizer Spreader Gearbox 1:3

1. PTO Interface & Spline Compatibility
The 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.

2. Optimised 1:3 Gear Ratio for Spreading Performance
The 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.

3. 耐腐蚀铝合金结构
Fertilizers, 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.

4. Versatile Disc and Agitator Drive Integration
The 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.

5. Wide Range of Agricultural Applications
Beyond 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.

6. Field-Ready Serviceability and Lubrication Access
Routine 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.

工作原理

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.

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.

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·m, 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.

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.

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.

Applications of the L-25J Fertilizer Distributor Gearbox

安装步骤

1. Safety Preparation and Equipment Check
Before 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.

2. 拆下旧变速箱
Disconnect 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.

3. Clean the Mounting Area and Inspect
With 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.

4. Mount the New L-25J Gearbox
Position 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.

5. Connect the PTO Driveline Shaft
Slide 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.

6. Fill with SAE 90EP Gear Oil
The 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.

7. Refit Spreading Disc and Conduct Initial Run Check
Refit 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.

Fertilizer Spreader Gearbox vs. Rotary Tiller Gearbox

对比表：

肥料撒播机变速箱和动力输出轴

Fertilizer spreader gearboxes and PTO driveline shafts are the two primary mechanical components that together form the complete power transmission chain from the tractor engine to the fertilizer spreading disc.

The L-25J fertilizer spreader gearbox receives rotational power from the tractor PTO and performs two critical functions: it changes the direction of the power transmission axis from the PTO's longitudinal alignment to the vertical or angular output axis needed to drive the spreading disc, and it applies the 1:3 step-up ratio to increase rotational speed from the PTO's 540 RPM input to the higher disc speed required for effective broadcast spreading. The gearbox's aluminium housing protects the internal bevel gear set and bearings from the corrosive fertilizer environment while maintaining the precise shaft alignment necessary for efficient, low-loss power transmission. Together, these functions convert the tractor's mechanical power into the specific speed and torque combination that determines spreading performance, application width, and distribution uniformity.

A PTO shaft, also referred to as a Power Take-Off shaft, is the mechanical drivetrain component that transfers rotational power from the tractor's PTO output yoke to the implement's gearbox input. Rather than requiring every piece of farm machinery to carry its own engine, the PTO shaft enables a single tractor to power a wide range of implements including rotary tillers, flail mowers, wood chippers, balers, and fertilizer spreaders. The PTO shaft consists of two universal joints connected by a telescoping tube assembly that accommodates the changes in length and angle that occur as the implement follows ground contours relative to the tractor during field operation. A safety guard surrounding the rotating shaft prevents contact with the spinning components and is a mandatory requirement under agricultural safety legislation in most countries.

The connection between the PTO shaft and the gearbox is made at the L-25J's input spline, where the PTO shaft's female coupling slides onto the gearbox's 1-3/8 inch 6-spline input stub shaft. The quality and condition of this connection directly affects gearbox longevity: a worn, misaligned, or incorrectly rated PTO shaft imposes additional vibration, impact loads, and misalignment forces on the gearbox input bearings and housing, dramatically accelerating wear and reducing service life. For this reason, CMN Transmission recommends always pairing the L-25J gearbox replacement with a thorough inspection of the PTO driveline shaft, and replacing any component showing signs of excessive wear, spline damage, or universal joint looseness to protect the new gearbox investment.

CMN Transmission supplies a comprehensive range of PTO driveline shafts, universal joints, yokes, and torque-limiting devices designed to complement our fertilizer spreader gearboxes. Selecting matched CMN PTO components ensures dimensional and performance compatibility, simplifies sourcing, and provides a complete drivetrain solution with consistent quality standards across every component in the power transmission chain from the tractor to the spreading disc.

Correct Lubrication of the L-25J Fertilizer Gearbox

1. Use the Correct Oil Grade
The L-25J must be filled with SAE 90EP (Extreme Pressure) gear oil, a mineral-based lubricant formulated with extreme pressure additives that protect the bevel gear tooth flanks under the high contact pressures generated during gear meshing. Do not substitute with engine oil, hydraulic oil, or lighter gear oils, as these lack the EP additive package needed to prevent gear scuffing and surface fatigue. Using the wrong fertilizer spreader gearbox oil grade will result in premature gear wear and potential gearbox seizure within a single spreading season. EP 90 gear oil is widely available from agricultural equipment dealers and lubricant suppliers globally.

2. Maintain the Correct Oil Level
Before each spreading season and periodically during intensive use, check the fertilizer spreader gearbox oil level by removing the level plug with the gearbox in its operating orientation. Oil should be visible at or just below the level plug thread. The maximum oil capacity is 0.35 L; do not overfill, as excess oil creates churning resistance, raises operating temperature, and can cause seal failure and leakage. Insufficient oil level leaves gear surfaces and bearings inadequately lubricated, leading to accelerated wear. A simple pre-season oil level check takes less than two minutes and can prevent a costly mid-season gearbox failure.

3. Perform the First Oil Change at 50-70 Hours
A critical and often overlooked step for a new or replacement gearbox is the early first oil change, specified at 50-70 operating hours for the L-25J. During the initial break-in period, the gear tooth surfaces and bearing contact tracks undergo micro-smoothing, generating fine metallic wear particles that become suspended in the oil. These particles act as an abrasive if left in the system. Draining and replacing the oil at 50-70 hours removes these particles before they can cause accelerated wear on the hardened gear and bearing surfaces. This early oil change is strongly recommended and will significantly extend the service life of the replacement gearbox.

4. Follow the 500-Hour Change Interval
After the initial early oil change, subsequent oil changes are scheduled at 500-700 operating hours, or at minimum once per year, whichever occurs first. In seasonal agricultural operations, an annual oil change at the end of the spreading season ensures that degraded oil containing moisture contamination and wear particles is replaced with fresh lubricant before the gearbox is stored for the off-season. Oil that has been thermally cycled through repeated heating and cooling absorbs moisture from condensation, which dilutes the EP additive package and promotes internal corrosion of the gear and bearing surfaces. Consistent adherence to the oil change schedule is the single most important maintenance action for maximising gearbox service life.

5. Check Seals and Inspect for Leakage
During every oil level check or oil change, visually inspect the gearbox housing, input and output shaft oil seals, and plug threads for any signs of oil leakage. Even minor oil seepage indicates a deteriorating seal or a loose plug, both of which will lead to accelerating oil loss and lubricant starvation if not addressed promptly. In fertilizer spreading applications, fertilizer dust can accumulate around oil seal lips and accelerate seal wear if not periodically cleaned away. Wipe the housing and seal areas clean with a dry cloth before inspecting for seepage, so that fresh leakage can be clearly identified against a clean surface.

6. Post-Season Storage and Lubrication Preparation
At the end of each spreading season, before placing the spreader in storage, drain the used gear oil from the L-25J and refill with fresh SAE 90EP to the correct level. This practice prevents moisture-contaminated oil from remaining in contact with the gear surfaces during the storage period, during which condensation and temperature cycling can cause significant internal corrosion. Clean the exterior of the gearbox housing with a dry brush or cloth to remove fertilizer crust deposits that retain moisture against the housing surface. Store the spreader in a dry, covered location if possible. At the start of the next season, recheck the oil level and the condition of all seals before recommissioning the spreader for field operation.

为什么选择 CMN Transmission 的化肥撒布机变速箱？

Korea CMN Transmission Co., Ltd. was established in 2000 and is located in Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, Korea. With over 100 dedicated factory employees, CMN Transmission operates as a vertically integrated manufacturer focused on the research and development, manufacturing, quality assurance, sales, and after-sales service of agricultural gearboxes for the global market. Over more than two decades of continuous operation, CMN Transmission has grown into a recognised and trusted supplier within the global agricultural gearbox industry, building its reputation on consistent product quality, technical accuracy, and reliable international delivery performance.

Our comprehensive product range covers the full spectrum of agricultural power transmission requirements, including rotary cutter gearboxes, rotary tiller gearboxes, feed mixer gearboxes, rotary mower gearboxes, fertilizer spreader gearboxes, flail mower gearboxes, post hole digger gearboxes, round baler gearboxes, square baler gearboxes, disc mower gearboxes, centre pivot irrigation gearboxes, hydraulic drive gearboxes, silage machine gearboxes, orchard sprayer gearboxes, rotary rake gearboxes, combine harvester gearboxes, grain storage gearboxes, grain transportation gearboxes, corn header gearboxes, cutting bar gearboxes, and poultry feeding gearboxes. Our custom agricultural gearbox capability covers nearly one thousand specifications, and we support custom production based on customer drawings and samples to meet specific OEM and application requirements.

Beyond gearboxes, our product range extends to PTO shafts, universal joints, yokes, telescoping tubes, torque limiters, safety covers, shaft adapters, flexible couplings, bearings, tiller blades, drive chains, and sprockets - enabling CMN to serve as a one-stop agricultural drivetrain component supplier for OEM manufacturers and international distributors. With an annual production volume exceeding 500,000 units, we have the manufacturing scale and operational consistency to fulfil large-volume OEM orders alongside standard aftermarket supply requirements.

All CMN products are manufactured and quality-controlled under CE and ISO 9001 certified management systems, ensuring that every gearbox leaving our factory meets the dimensional, material, and performance specifications required by our global customer base. Our fertilizer spreader gearboxes are exported to and trusted by agricultural professionals in the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and more than 60 additional destination countries worldwide. This global reach reflects our ability to provide consistent technical solutions for agricultural machinery partners operating across diverse farming environments, climatic conditions, and crop production systems.

常见问题解答

Q: Is the CMN L-25J a direct drop-in replacement for the Comer L-25J gearbox?
A: Yes. The CMN L-25J has been engineered as a direct replacement for the Comer L-25J fertilizer spreader gearbox. It matches the original Comer specifications including the 1:3 gear ratio, 1-3/8 inch 6-spline (Z6) input shaft, 22 mm output shaft diameter, 4-bolt mounting pattern on 108 mm x 108 mm centres, and the same aluminium housing weight of 4.1 kg. No frame modification, adapter plates, or driveline changes are required for a standard like-for-like replacement on spreaders originally designed for the Comer L-25J.

Q: What oil should I use in the L-25J fertilizer spreader gearbox?
A: The L-25J requires SAE 90EP (Extreme Pressure) gear oil. This is a mineral-based lubricant containing extreme pressure additives that protect the bevel gear tooth flanks under high contact loads. The correct fertilizer spreader gearbox oil grade is widely available from agricultural equipment dealers and lubricant suppliers. The maximum fill capacity is 0.35 L. Do not use engine oil, hydraulic oil, or gear oils without the EP additive classification, as these will not provide adequate protection for the hardened bevel gear surfaces and will lead to accelerated wear.

Q: What does the 1:3 fertilizer spreader gearbox ratio mean for spreading performance?
A: The fertilizer spreader gearbox ratio of 1:3 means that for every one revolution of the input shaft (driven by the tractor PTO at 540 RPM), the output shaft rotates three times (at 1,620 RPM). This step-up in rotational speed is essential for centrifugal disc-type fertilizer spreaders, where the disc must rotate at high speed to broadcast granular fertilizer over a wide spread width. A higher disc speed generally produces a wider, more uniform spreading pattern. The 1:3 ratio of the L-25J is calibrated for standard 540 RPM PTO operation and is the most common ratio for light to medium centrifugal fertilizer spreader applications.

Q: How often should I change the oil in my fertilizer spreader gearbox?
A: For the L-25J, the oil change schedule is: first oil change at 50-70 operating hours (to flush break-in wear particles), then every 500-700 operating hours or at least once per year, whichever comes first. For seasonal agricultural operations, we recommend an annual oil change at the end of each spreading season, before the spreader goes into storage. This removes moisture-contaminated oil and prevents internal corrosion during the off-season. Checking the fertilizer spreader gearbox oil level before each spreading season and periodically during intensive use takes only a few minutes and is essential preventive maintenance.

Q: Can the L-25J be used at 1000 RPM PTO speed?
A: The L-25J is rated for a maximum input rotation speed of 540 r/min, which corresponds to the standard 540 RPM PTO speed used on most agricultural tractors for this class of implement. Operating the gearbox at 1000 RPM PTO speed would significantly exceed the rated maximum input speed and is not recommended, as this would increase the output shaft speed to approximately 3,000 RPM - far beyond the design limits of the gearbox and the connected spreading disc. If your application requires operation at a different PTO speed or output speed, please contact CMN Transmission's technical team to discuss the appropriate gearbox model and specification for your requirements.

Q: Does the L-25J come with oil already filled?
A: No. All L-25J gearboxes are supplied without oil (dry). Before initial operation, the gearbox must be filled with the correct grade of SAE 90EP gear oil to the specified level (maximum 0.35 L). Operating the gearbox without oil will cause immediate and irreversible damage to the bevel gears and bearings within minutes of running. Always verify the oil has been correctly filled to the level plug before engaging the PTO for the first time. CMN Transmission recommends using a clean funnel and filling slowly to avoid overfilling.

Q: What spreader brands is the L-25J compatible with besides Comer?
A: The CMN L-25J is a direct replacement for the Comer L-25J gearbox, and as such it is compatible with any fertilizer spreader originally designed around the Comer L-25J specifications. A wide range of European and global spreader manufacturers have used the Comer L-25J as an original equipment gearbox in their centrifugal disc spreader models, including various Vicon, Amazone, Kuhn, Sulky, and Bogballe models that use this gearbox family. To confirm compatibility with your specific spreader model and year, check the original spreader's parts manual or gearbox identification plate for the Comer model reference. Contact our technical team if you need confirmation for your specific spreader make and model.

Q: What is the maximum power the L-25J can transmit?
A: The L-25J is rated for a maximum input power of 5 kW (approximately 7 HP) at the standard 540 RPM PTO input speed, with a maximum output torque of 30 N·m. These ratings apply under continuous steady-state operating conditions at the specified oil fill level and with the correct SAE 90EP lubricant. Exceeding these power ratings will cause accelerated gear and bearing wear, potential oil seal failure from elevated operating temperatures, and in extreme cases, gear tooth or shaft failure. If your application requires higher power transmission than these ratings, contact CMN Transmission for information on alternative gearbox models from our range that are rated for higher power inputs.

问：如何判断我的肥料撒播机变速箱是否需要更换？
答：肥料撒布机变速箱需要更换或维修的常见迹象包括：运行过程中出现异常的研磨声、咔嗒声或啸叫声；撒布机机架振动过大；轴封或壳体接头处漏油；运行过程中圆盘转速降低或不稳定；输入轴或输出轴间隙过大或松动；或圆盘在负载下突然停止运转。如果变速箱漏油且运行过程中润滑油不足，则放出的油中通常会含有金属颗粒，表明内部磨损严重。对于这种小型铝制农用变速箱，如果怀疑内部损坏，更换整个变速箱总成比尝试逐个进行内部维修更具成本效益。

问：CMN L-25J 拥有哪些质量认证？
答：CMN Transmission 在 ISO 9001 认证的质量管理体系下生产 L-25J 型肥料撒布机变速箱，确保每批次生产的每个单元都具有一致的尺寸精度、材料规格符合性以及功能性能测试。我们的产品还拥有 CE 认证，证明其符合欧洲机械安全要求。这些认证对于欧洲及其他受监管市场的进口商和分销商至关重要，因为他们需要产品符合性文件。如有需要供应商资质文件的 OEM 和贸易客户，我们可应要求提供我们当前的 ISO 9001 证书和 CE 符合性声明副本。

用户评价

亚历杭德罗·马丁内斯，阿根廷农作物种植业
"We manage about 1,200 ha of wheat and corn in the Pampas region and use several centrifugal spreaders for our fertilizer programme. Replaced three worn gearboxes with the CMN L-25J mid-season and honestly couldn't believe how straightforward it was. Arrived in Buenos Aires in good condition, the spline was identical to our existing driveshafts, and we had all three running within the hour. Did the first oil change at 60 hours as instructed and everything looked clean inside - no metal particles at all. Very impressed with the build quality for the price."

特拉维斯·贝克，谷物种植，美国
"I ordered two L-25J gearboxes for our Vicon spreader after the original Comer units started leaking badly in our second season. The CMN replacements arrived in Texas within about ten days, well packaged. The bolt pattern and spline fit matched perfectly - literally a direct swap with no modifications. I've been using them for one full fertilizer season now on our soybean operation and they're running without a single issue. The aluminium housing looks like it will hold up well to our Oklahoma summer heat too. Will definitely order from CMN again."

罗伯特·安德森，混合农业，加拿大
“我之前有点犹豫要不要从韩国订购变速箱，用于我们在安大略省的撒播机，但价格比原厂Comer的配件便宜太多了，实在难以抗拒。下了订单，大约12天就到了，没有遇到任何海关问题。我把它装到了我们600升的悬挂式撒播机上，用于春季尿素撒播。传动比合适，运转安静，第一次65小时换油后，旧油里没有任何异常。几周前我又检查了一次油位，一切正常。对于一个每年要更换一两个变速箱的农场来说，这绝对物超所值。”

纪尧姆·杜布瓦，法国农业合作社
“我代表卢瓦尔河地区的合作社，从CMN公司采购了六台L-25J变速箱，用于替换我们成员农场老旧的Comer原装变速箱。售前沟通响应迅速且专业——在下单前，他们确认了规格与我们的撒布机型号相符。海运到法国大约用了14天，六台变速箱全部完好无损地送达。经过一个石灰撒布季的使用，六台变速箱仍然运行良好，没有出现任何漏油现象。售后服务方面，当我们对润滑油等级有疑问时，CMN公司也提供了可靠的解答。强烈推荐。”

克劳斯·瓦格纳，德国耕作农业
“这件产品非常合适。我订购了CMN L-25J变速箱，用来替换我们离心式撒播机上旧的Comer变速箱。从德国到巴伐利亚的运输大约用了16天，对于海外运输来说，这个速度完全可以接受。安装过程非常顺利，花键连接精准，变速箱已经安静地运行了两个施肥周期。性价比很高。下次有磨损的时候我还会从这里订购。感谢客服快速解答了我的技术问题。”

内森·坎贝尔，草坪管理，澳大利亚
“我在维多利亚州的三个场地经营高尔夫球场和运动场地维护业务，我们使用小型拖拉机上的撒播机进行草坪施肥。我们其中一台机器的原装变速箱齿轮损坏，而原装的Comer替换件价格几乎是我们购买CMN变速箱的两倍。运到墨尔本大约花了两个星期，变速箱与描述完全一致。它与我们的撒播机完美匹配，功能也完全正常，圆盘转速听起来也合适。两个月来一直正常使用，没有任何问题。我会再订购一个备用。”

法比奥·里贝罗，咖啡种植，巴西
“我们为位于米纳斯吉拉斯州内陆的咖啡农场订购了两台L-25J变速箱。大约18天后，变速箱完好无损地运抵圣保罗。安装非常简便，完美适配我们的800升肥料撒布机。整个咖啡施肥季我们都在使用它们，变速箱运转良好，没有任何问题。售前服务非常周到，能够快速解答我们的技术问题。唯一不足之处是交货时间稍慢，但产品质量非常好。”

马尔科·比安奇，蔬菜种植，意大利
“我在波河谷经营着一家大型蔬菜种植园，由于施肥强度大，我们每年都要更换好几个撒播机变速箱。我通过网络搜索找到了CMN，并决定试用三台L-25J型撒播机，与我们常用的意大利原厂配件进行比较。通过快递，大约两周就送到了艾米利亚-罗马涅大区。花键配合完美，安装孔位也完全匹配，运行噪音水平与原厂配件相当。经过三个月在我们露天蔬菜种植区的高强度使用，这三台撒播机依然运转良好，没有任何泄漏或故障。我以后会把我们常规的配件采购都转为CMN。”

苏雷什·帕特尔，印度农业零部件经销商
“我们为中央邦各地的农场供应农机配件，并一直在测试CMN变速箱，以期为我们的客户提供价格更高的欧洲原厂配件的替代方案。我们订购了一批五台L-25J变速箱进行评估。到货后，质量良好——铸件干净，没有表面缺陷，油塞也拧紧了。在首次试用中，我们将其中两台变速箱安装在客户的撒播机上，两台变速箱在多次施肥作业中均运行正常。对于需要可靠替换零件的印度农民来说，CMN变速箱的价格是一个切实可行的选择。我们现在已经下了更大的后续订单。”