Getriebeübersetzung L-25A für Düngerstreuer 1,9:1, Ersatz für Comer L-25A Getriebe

The L-25A Fertilizer Spreader Gearbox Ratio 1.9:1 Replacement for Comer L-25A Gearbox, also called a fertilizer distributor gearbox, is an essential component of agricultural machinery, specifically designed for tasks such as soil preparation, crop treatment, and fertilizer spreading. Located at the center of the machine, it transmits power from the tractor's power take-off (PTO) to the spinning discs or augers that evenly distribute fertilizer across the fields. Engineered for durability and reliability, this fertilizer spreader gearbox ensures consistent power transmission to meet varying operational demands. Its precision-cut gear train adjusts rotational speed and torque based on spreading requirements, optimizing machine performance in both small-scale garden settings and large commercial crop-farming operations.

Built to withstand the rigorous conditions of agricultural work, these fertilizer spreader gearboxes play a crucial role in enhancing the efficiency and effectiveness of key farming tasks. The L-25A is a direct-fit replacement for the OEM Comer L-25A, featuring an aluminium alloy housing for reduced machine weight, dual 25 mm output connection shafts, and SAE 80W-90 gear oil compatibility. Whether used in chemical fertiliser spreaders, band saws, or multi-purpose agricultural implements, this agricultural gearbox for fertilizer spreader applications offers a field-proven solution trusted by operators across more than 60 countries. The 1.9:1 gear ratio precisely matches standard PTO input speeds to the disc RPM range required for uniform fertilizer coverage.

Technische Parameter

Wir haben ein externes Lieferantenaudit und eine Unternehmensprüfung mit Unterstützung von SGS/TÜV Rheinland durchgeführt. Diese Prüfung ermöglicht es Käufern, die Unternehmensidentität, die Geschäftstätigkeit, das Lieferantenprofil und die allgemeine Fertigungskompetenz zu überprüfen. Produktspezifische Prüfberichte, Materialdokumente oder Konformitätsnachweise können je nach Auftragsanforderungen bereitgestellt werden.

Mindestbestellmenge (MOQ): Flexibel einstellbar, abhängig von Produkttyp und Bestellmenge.

Proben: Neukunden können unter bestimmten Umständen 1–5 Muster anfordern.

Gemischte Bestellungen: Die Kombination verschiedener Modelle ist möglich; der Gesamtbestellwert muss ungefähr $1.500 erreichen.

Kleinbestellungen: Bestellungen ab 1–2 Stück sind möglich, der Stückpreis ist dann aber entsprechend höher.

Lieferzeit: 10–25 Werktage für Standardteile; 20–45 Werktage für kundenspezifische Komponenten; 45–120 Werktage für projektbezogene Ausrüstung.

Handelsbedingungen: EXW, FOB, CIF und DAP werden grundsätzlich unterstützt; FCA, CFR, CPT, CIP und DDP können gesondert verhandelt werden.

Abmessungen des Getriebes für den Düngerstreuer L-25A

Features of the L-25A Fertilizer Spreader Gearbox 1.9:1

1. Zapfwellenschnittstelle und Keilwellenkompatibilität
The L-25A input shaft is machined to match standard 1-3/8" Z6 tractor PTO splines operating at 540 RPM, the most common agricultural PTO speed worldwide. Precise dimensional compatibility eliminates adapter requirements and prevents vibration, misalignment, and excessive bearing wear caused by shaft-to-PTO mismatch. The result is smooth, chatter-free power transfer from the first field pass, reducing drivetrain fatigue and extending the service life of both the gearbox and the connected PTO shaft.

2. Ratio Configuration & Output Options
With a fixed 1.9:1 step-up ratio, this fertilizer gearbox converts 540 RPM PTO input into approximately 1,026 RPM disc output, delivering the ideal rotational speed for consistent granule throw patterns. The 25 mm dual-connection output shafts support various disc mounting configurations, including single-disc, twin-disc, and agitator-coupled layouts. This versatility makes the L-25A suitable not only for standard fertilizer spreader gearbox applications but also for seed distributors and lime-spreading equipment where precise disc RPM is critical for uniform coverage.

3. Korrosionsbeständige Konstruktion
Fertilizer compounds, including ammonium nitrate, urea, and potassium chloride, are aggressively corrosive. The L-25A addresses this with a die-cast aluminium alloy housing that is naturally corrosion-resistant, combined with chemically inert sealing gaskets, sealed precision bearings, and robust oil seals that prevent fertilizer ingress to internal components. Specialized surface treatments further protect external contact surfaces during prolonged chemical exposure, making this fertiliser spreader gearbox exceptionally durable in high-corrosion environments typical of intensive farming operations.

4. Integration von Rührwerk und Festplattenlaufwerk
The dual 25 mm output shafts (X and Y port configurations) enable the simultaneous drive of both a main spinning disc and an optional agitator mechanism. The agitator prevents material bridging in the hopper, a common problem with hygroscopic fertilizers such as granulated urea that can clump in humid conditions. By supporting both functions through a single compact gearbox housing, the L-25A eliminates the need for a secondary drive unit, reduces total machine weight, and simplifies the overall drivetrain layout on the spreader frame.

5. Field Serviceability
Designed with the practical realities of farm maintenance in mind, the L-25A features conveniently positioned fill, drain, and oil-level inspection plugs that are fully accessible without removing the gearbox from the machine frame. A dedicated breather vent prevents pressure build-up during thermal cycling, protecting seals from extrusion failure. With a maximum oil capacity of just 0.35 L and clearly marked service intervals (first oil change at 50-70 operating hours, then every 500 hours or annually), routine fertilizer spreader gearbox maintenance is quick, predictable, and executable with standard farm tools.

6. Lightweight Aluminium Housing
At only 4.1 kg, the aluminium alloy housing of the L-25A is significantly lighter than equivalent cast-iron gearboxes, reducing the total suspended mass on the spreader's center frame and improving machine balance during field operation. The reduced weight also lowers the center of gravity of the implement, improving stability on sloped terrain. Despite its lightweight construction, the aluminium housing provides excellent rigidity, dissipates heat efficiently from gear meshing, and meets the structural demands of continuous 11 kW power transmission across full working seasons, making it an ideal choice for manufacturers and distributors seeking reliable fertilizer spreader gearbox parts.

Funktionsprinzip

The L-25A connects directly to the tractor's PTO output shaft, accepting 540 RPM input through its 1-3/8" Z6 splined input connection. Inside the housing, a precisely ground set of bevel gears converts this rotational input through a 1.9:1 step-up ratio, delivering approximately 1,026 RPM at the output shaft while simultaneously increasing the available torque to 99 Nm at the disc end. This speed increase is essential: the spinning discs of a fertilizer spreader require high rotational velocity to generate the centrifugal force needed to project granules in a controlled, even pattern across the target spread width. The bevel gear mesh angle is engineered to redirect drive through 90 degrees, allowing the output shaft to be oriented perpendicular to the tractor's centerline, which is the standard layout in all commercially manufactured centrifugal spreader designs.

The internal gear train operates within an aluminium alloy housing filled with 0.35 L of SAE 80W-90 gear oil, which provides continuous film lubrication to all meshing gear teeth and rotating bearing races. This oil bath reduces metal-to-metal contact stress, dissipates frictional heat, and carries wear particles away from critical contact zones. The housing is sealed by precision-machined oil seals on both input and output shafts, preventing lubricant leakage while blocking entry of fertilizer dust, moisture, and field debris. A calibrated breather vent maintains equalized internal pressure during temperature fluctuations common in field operation, protecting seals from pressure-driven extrusion. The aluminium alloy selected for the housing offers natural corrosion resistance against the ammonium and potassium compounds encountered in standard fertilizer blends, while its thermal conductivity efficiently dissipates heat from the gear mesh zone, keeping operating temperatures within safe limits even during sustained high-duty-cycle spreading passes.

Power exits the L-25A via one or two 25 mm diameter smooth output shafts (depending on the configuration selected from the L-25A catalog series), each supported by precision ball bearings rated for the radial and axial loads imposed by the spinning disc and fertilizer granule impact forces. The output shaft interfaces directly with the disc hub through a keyed or clamped mounting arrangement, transmitting torque without slippage across the full 11 kW rating. On twin-disc configurations, the Y-port output simultaneously drives a second disc from the same gear stage, ensuring both discs rotate at identical speed and produce symmetrical spread patterns on either side of the spreading centerline. Where an agitator drive is fitted, the same output shaft arrangement powers the hopper agitator, using the gearbox as a central distribution hub for all mechanical drives on the spreader, simplifying the complete driveline architecture and reducing the total number of drive components requiring maintenance during the season.

Anwendungsgebiete

L-25A Fertilizer Spreader Gearbox Parts

1. Getriebegehäuse
The precision die-cast aluminium alloy housing forms the structural backbone of the L-25A, enclosing all rotating components within a rigid, sealed enclosure. Its compact external dimensions minimize spreader frame space requirements while maintaining internal bore tolerances that ensure correct gear alignment over the full service life of the unit. The housing's aluminium construction provides inherent corrosion resistance and excellent thermal conductivity for heat dissipation during continuous operation.

2. Eingangswelle
The input shaft is precision-machined to the 1-3/8" Z6 spline profile, ensuring a direct, interference-free coupling with standard tractor PTO shafts at 540 RPM. Manufactured from case-hardened alloy steel, the input shaft is hardened to resist torsional fatigue under cyclic loading typical of field PTO operation. The splined section is protected by a dedicated oil seal that prevents lubricant migration along the shaft toward the PTO coupling yoke, keeping the driveline clean and dry.

3. Bevel Gears
The core of the L-25A's power transmission is a matched pair of precision-cut bevel gears that convert the PTO's axial rotation through 90 degrees while applying the 1.9:1 speed ratio. Both the drive and driven bevel gears are manufactured from carburized and hardened alloy steel, with tooth profiles ground to tight tolerance classes for smooth, quiet meshing and minimal tooth surface stress. The gear pair is pre-set to the correct backlash at the factory to ensure optimal load distribution from first operation, requiring no field adjustment after replacement.

4. Output Shaft(s)
One or two 25 mm diameter output shafts deliver processed torque to the spreading discs, agitators, or other driven implements. Each output shaft is manufactured from hardened steel with precision ground bearing journals to ensure concentric running and long bearing life. The 25 mm diameter provides sufficient torsional stiffness to handle the full 99 Nm rated output torque without deflection, while the standardized diameter matches the hub bore of the vast majority of replacement and aftermarket spreader discs available in the global market.

5. Precision Bearings
Deep-groove ball bearings support all rotating shafts within the L-25A housing, providing low-friction support for both radial loads from the disc weight and centrifugal forces, as well as axial loads generated by the bevel gear thrust reaction. The bearings are sized for the full rated load spectrum and are permanently lubricated by the internal gear oil bath. Sealed-face variants protect bearing races from contamination by fertilizer dust that penetrates even well-sealed housings during years of intensive spreading operation.

6. Öldichtungen
High-quality lip-type oil seals are installed at every shaft penetration through the housing, including the input shaft, both output shafts, and the housing joint faces. These seals use spring-loaded elastomeric lips to maintain a dynamic contact seal against the rotating shaft under all operating temperature and speed conditions. Resistance to fertilizer compounds and agricultural chemical exposure is built into the elastomer formulation, preventing premature seal degradation and lubricant leakage that would contaminate the spreading surface and accelerate internal wear.

7. Schmiersystem
The L-25A employs a splash lubrication system where gear rotation continuously carries SAE 80W-90 gear oil from the sump to all meshing tooth contact zones and bearing races within the 0.35 L capacity housing. A dedicated fill plug on the housing top enables easy oil level checking, while a drain plug at the housing base facilitates clean, complete oil changes at the specified 500-hour or annual intervals. The simplicity of this maintenance-free splash system eliminates the need for oil pumps or filters, reducing service complexity and the number of potential leak points in the fertilizer spreader gearbox assembly.

8. Breather Vent & Gaskets
A calibrated breather vent installed in the upper housing zone equalizes internal air pressure as the gearbox heats and cools during working cycles, preventing pressure differentials that would force gear oil past shaft seals. Housing joint faces are sealed by precision-formed gaskets or RTV sealant compounds resistant to gear oil and fertilizer chemicals. These gaskets maintain zero-leak joints over thousands of operating hours, ensuring the L-25A remains fully sealed and operates at correct oil levels throughout its service life as a critical fertilizer spreader gearbox component.

Fertilizer Spreader Gearbox Troubleshooting

Installation Operating

1. Vorinstallationsprüfung
Before fitting the new gearbox, inspect the spreader frame mounting face for corrosion, cracks, or deformation that would prevent the housing from seating flat. Remove all remnants of the old gasket or sealant from the mounting surface and clean with a degreaser. Verify that all four mounting-hole threads in the spreader frame are clean and in good condition. Check that the new L-25A housing matches the bolt-hole pattern and shaft positions of the original Comer L-25A unit being replaced, confirming compatibility before proceeding with the installation.

2. Position & Align the Gearbox
Lift the 4.1 kg L-25A into position against the spreader frame mounting face, aligning all four mounting bolt holes simultaneously. Ensure the output shaft(s) are oriented correctly relative to the disc drive connection point, and that the input shaft spline is directed toward the PTO shaft connection point. Insert all four mounting bolts finger-tight before applying any torque, to allow the housing to self-locate accurately without being cocked by premature tightening of one corner. Confirm there is no gap between the housing and the frame at any point around the mounting face perimeter before proceeding to torque the fasteners.

3. Torque Mounting Fasteners
Tighten the four mounting bolts in a diagonal cross pattern to the torque value specified for the bolt diameter used in the spreader frame design. Using a calibrated torque wrench ensures that the housing seats evenly against the frame without distorting the aluminium mounting flanges, which would cause oil seal misalignment and potential leakage. After initial torquing, work around the pattern a second time to confirm that no bolt has relaxed due to seating of the joint faces. Apply thread-locking compound to fasteners exposed to vibration if specified by the spreader manufacturer's service documentation.

4. Fill Gear Oil to Correct Level
The L-25A is supplied without oil. Before first operation, fill the gearbox via the fill plug with SAE 80W-90 gear oil to the correct level, not exceeding the 0.35 L maximum capacity. Use the level plug (if fitted) to verify oil height, or fill until oil reaches the lower thread of the fill hole. Do not overfill, as excess oil increases internal churning losses and can cause oil to be expelled through the breather vent during operation, creating an oil-contamination hazard on the spreading area beneath the machine. Reinstall the fill plug securely and wipe the housing clean of any spilled oil before proceeding.

5. Connect PTO Shaft & Disc Drive
Slide the PTO shaft's female splined yoke onto the gearbox input shaft, ensuring the quick-release locking pin engages fully in the shaft groove with an audible click. Connect the output shaft to the disc hub using the keyway and retaining fastener arrangement fitted to the spreader. Verify that all PTO shaft guards are correctly fitted and secured before approaching the tractor PTO engagement control. Confirm adequate universal-joint operating angles in the PTO shaft at the expected range of hitch positions to avoid excessive vibration during spreading operation.

6. Run-In & First Service Check
Engage the PTO at low idle speed and allow the gearbox to run unloaded for 2 to 3 minutes before applying full spreading load. This warm-up period circulates oil to all internal surfaces and allows the gear mesh to self-seat under minimal load conditions. After the first 50 to 70 operating hours, perform the initial oil change as specified: drain the used oil completely while warm, flush if contamination is suspected, and refill with fresh SAE 80W-90 to the correct level. This critical first-service oil change removes metallic particles produced during the initial gear and bearing run-in period, preventing their circulation causing abrasive wear in subsequent operating hours of this agricultural gearbox.

Düngerstreuer-Getriebe und Zapfwellenantriebswelle

Fertilizer spreader gearboxes serve as the central power distribution hub in every tractor-mounted centrifugal spreader. Their primary function is to accept continuous rotary power from the tractor's PTO output flange, transform that power through a gear ratio change, and redirect it to the spinning discs or agitators that perform the actual fertilizer distribution work. Without a correctly matched fertilizer gearbox, the spreader discs would either rotate too slowly to achieve adequate throw distance, or too quickly, creating an uncontrolled scatter pattern that wastes expensive fertilizer product.

The L-25A's 1.9:1 step-up ratio is specifically engineered to match the standard 540 RPM agricultural PTO speed to the approximately 1,000 RPM disc rotation required for optimal spread width and pattern uniformity across the full working width of mid-capacity centrifugal spreaders. The 99 Nm torque capacity handles the combined inertia and aerodynamic loads of the spinning disc and fertilizer granule acceleration without gear tooth surface fatigue or thermal overload during extended spreading passes.

Beyond simple ratio conversion, the gearbox also provides a critical mechanical isolation point between the tractor's PTO shaft and the spreader disc. This isolation means that shock loads from disc impacts with foreign objects in the fertilizer hopper are absorbed within the gearbox rather than transmitted back through the PTO shaft to the tractor's transmission, protecting the tractor drivetrain from damage. The aluminium housing's natural compliance provides a degree of vibration damping as well, reducing the high-frequency vibration that disc-balance issues or uneven fertilizer flow can introduce into the driveline.

The Power Take-Off shaft (PTO shaft) is the mechanical link that bridges the gap between the tractor's rear PTO output flange and the gearbox input spline, transmitting torque through a telescoping, guard-covered shaft with universal joints at both ends. The universal joints accommodate the vertical and lateral angle changes that occur as the tractor navigates field terrain and turns at headlands, allowing continuous power transmission even when the spreader is not perfectly aligned with the tractor's centerline.

For the L-25A gearbox with its 1-3/8" Z6 input spline, the connected PTO shaft must match this spline specification at the implement end and the tractor's PTO output shaft profile at the tractor end. Standard 540 RPM agricultural PTO shafts use the 1-3/8" Z6 spline as an international standard, meaning the L-25A is directly compatible with the PTO drive shafts fitted to the vast majority of modern agricultural tractors from all major manufacturers operating in the 40-100 HP class that typically pairs with mid-capacity fertilizer spreaders.

Correct PTO shaft length is essential: a shaft that is too short will pull apart under compression when the tractor lifts the spreader on the 3-point linkage, while one that is too long will collapse the telescoping section and potentially damage the universal joints. The PTO shaft should be sized so that it operates within the manufacturer's specified overlap range at the expected minimum and maximum hitch positions used in normal field spreading operation, ensuring the gearbox for fertilizer spreader receives consistent, uninterrupted power throughout the working day. CMN Transmission recommends matching the replacement PTO shaft to the spreader manufacturer's original specification, and inspecting both shaft and gearbox input splines for wear or corrosion at each season's start before resuming spreading operations.

Warum sollten Sie sich für die Düngerstreuergetriebe von CMN Transmission entscheiden?

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 dedicated factory employees, CMN Transmission operates as a fully integrated R&D, manufacturing, sales, and service organization focused exclusively on agricultural transmission products. Over more than two decades, CMN has grown from a domestic Korean manufacturer into a globally recognized agricultural gearbox brand, currently exporting to more than 60 destinations worldwide and maintaining long-term supply relationships with OEM machinery builders and independent equipment distributors across all major agricultural markets.

Our product range covers the complete spectrum of agricultural gearbox types, 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, center pivot irrigation gearboxes, hydraulic drive gearboxes, silage machine gearboxes, orchard sprayer gearboxes, rotary rake gearboxes, combine harvester gearboxes, grain storage gearboxes, grain transportation gearboxes, corn header gearboxes, cutting bar gearboxes, and poultry feeding gearboxes. Our custom agricultural gearbox capability covers nearly one thousand specifications, enabling CMN to serve diverse machinery platforms that fall outside standard catalog dimensions.

With an annual production capacity exceeding 500,000 units, CMN Transmission consistently delivers reliable performance and long-term durability across all product lines. Our manufacturing facility operates under ISO 9001 certified quality management protocols, with dimensional inspection at every key machining stage and functional testing of assembled gearboxes before shipment. CE certification covers all products exported to European Union markets, ensuring full compliance with EU Machinery Directive safety requirements.

CMN Transmission currently exports to the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, China, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and many more markets. Our experience spans providing technical solutions for global agricultural machinery OEMs, regional distributors, and direct-to-farm supply programs, giving us unmatched insight into the performance demands and maintenance realities of agricultural gearboxes across all major farming systems worldwide.

When you source the L-25A or any other fertilizer spreader gearbox from CMN Transmission, you are backed by two decades of agricultural transmission expertise, a certified manufacturing infrastructure, a global export logistics network, and a committed after-sales technical support team. Contact us today to discuss your requirements and experience the CMN Transmission standard of agricultural gearbox quality.

Häufig gestellte Fragen

Q: Is the CMN L-25A a direct replacement for the Comer L-25A gearbox?
A: Yes. The CMN Transmission L-25A Fertilizer Spreader Gearbox is engineered as a bolt-on dimensional replacement for the OEM Comer L-25A unit. It replicates the original mounting bolt pattern, housing footprint, 1-3/8" Z6 input spline specification, and 25 mm output shaft diameters, ensuring that the replacement fits directly onto the spreader frame and connects to the existing PTO shaft and disc hub without requiring any modification, welding, or custom adaptation. If you are uncertain about compatibility with a specific spreader model, contact our technical team with your spreader make and model number before ordering.

Q: What fertilizer spreader gearbox oil should I use and how often should I change it?
A: The L-25A requires SAE 80W-90 gear oil, which is a standard GL-4 or GL-5 rated hypoid/mineral gear lubricant widely available from agricultural equipment dealers and lubricant suppliers globally. The maximum oil capacity is 0.35 litres. The critical first oil change must be performed after 50 to 70 operating hours to remove metallic break-in particles from the gear mesh. Subsequent changes should be performed every 500 operating hours or at least once per year, whichever occurs first. Never use engine oil or hydraulic oil as a substitute, as these products do not contain the extreme-pressure additives required for correct gear tooth protection in a gearbox application.

Q: What is the fertilizer spreader gearbox ratio on the L-25A and why does it matter?
A: The L-25A has a 1.9:1 step-up ratio, meaning the output shaft rotates 1.9 times faster than the input shaft for every revolution of the PTO. At a standard 540 RPM PTO input speed, this delivers approximately 1,026 RPM at the disc output shaft. This specific output RPM is calibrated to match the disc centrifugal force requirements of mid-capacity centrifugal spreaders, producing the lateral granule throw velocity needed for the standard 12-24 metre working widths used in commercial crop fertilizer spreading. Using a gearbox with an incorrect ratio will result in either under-speed (too narrow a spread width and uneven pattern) or over-speed (excessive granule impact energy causing fertilizer damage and inconsistent distribution).

Q: How do I check the oil level on the L-25A fertilizer spreader gearbox?
A: To check the fertilizer spreader gearbox oil level, park the tractor and spreader on a level surface and allow the gearbox to cool for at least 10 minutes after operation so the oil settles from the internal surfaces. Locate the fill plug on the upper housing face and the level plug on the housing side. Remove the level plug; oil should be visible at the plug aperture when the gearbox is correctly filled to 0.35 L. If no oil flows out when the level plug is removed, the gearbox is below the correct oil level and must be topped up via the fill plug. Reinstall both plugs finger-tight, then torque to specification before resuming spreading operation.

Q: Does the L-25A come pre-filled with oil?
A: No. All CMN Transmission L-25A gearboxes are supplied dry (without oil) in accordance with standard practice for gearbox supply to avoid oil spillage during shipping and to ensure that the correct oil grade specified for the local climate and operating conditions is used by the end user. Before first operation, you must fill the gearbox with SAE 80W-90 gear oil to the correct level. Operating the gearbox without oil even for a very short period will cause irreversible gear tooth and bearing damage due to dry metal-to-metal contact. This is a critical pre-operation step that must not be overlooked.

Q: Can the L-25A gearbox be used on spreaders other than fertilizer spreaders?
A: Yes. The L-25A is listed for use in various agricultural applications beyond fertilizer spreading, including band saw drives and other machinery requiring a compact step-up bevel gearbox with a 1.9:1 ratio and 540 RPM input. Its 11 kW power rating and 25 mm output shafts make it suitable for any application within this power and speed range where a right-angle bevel gearbox with an aluminium housing is appropriate. Contact CMN Transmission's technical team to confirm suitability for your specific application before installation in any use case other than the primary fertilizer spreader application for which it is primarily designed and rated.

Q: What is the maximum input power and output torque of the L-25A fertilizer spreader gearbox?
A: The L-25A is rated for a maximum input power of 11 kW (15 HP) at 540 RPM, with a maximum output torque of 99 Nm at the disc output shaft. The maximum output (absorbed) power is 7 kW. These ratings represent continuous operating limits under normal spreading conditions. Short-duration peak loads above these values during disc acceleration or material blockage events are handled by the internal gear and bearing safety margins, but sustained overloading above the rated values will shorten the service life of gears and bearings. If your spreader requires more than 11 kW input, CMN Transmission's product range includes higher-rated agricultural gearbox options suitable for heavy-duty commercial spreading applications.

Q: Where can I buy the L-25A fertilizer spreader gearbox and are spare parts available?
A: The L-25A is available for purchase directly through CMN Transmission's official website at korea-transmission.com, and through our network of authorized distributors across more than 60 countries worldwide. Inquiries for bulk orders, OEM supply, or custom specification requirements should be directed to our sales team via the contact form on the website. Service kits including replacement oil seals, bearings, and gaskets are available as fertilizer spreader gearbox parts through CMN Transmission's parts supply channel. We recommend contacting us to confirm current stock availability and lead times for your required country of delivery before placing an order.

Q: How long does the L-25A fertilizer spreader gearbox typically last?
A: Service life of a fertilizer spreader gearbox depends primarily on correct oil maintenance, operating within rated power limits, and minimizing fertilizer contamination of the internal components. With correct SAE 80W-90 oil changes at the specified 500-hour or annual intervals, and operation within the 11 kW rated input power, the L-25A can be expected to provide many years of reliable service across multiple spreading seasons. Units that are consistently operated with contaminated or insufficient oil, or that are regularly overloaded beyond rated power, will exhibit significantly shorter service life. Many CMN Transmission customers report 5 to 8 seasons of service from well-maintained gearboxes in typical fertilizer spreading duty cycles.

Q: What certifications does CMN Transmission hold as a fertilizer spreader gearbox manufacturer?
A: CMN Transmission holds CE product certification, ISO 9001 Quality Management System certification, Environmental Management System certification, and Occupational Health and Safety Management certification. These four certifications collectively confirm that CMN Transmission operates a documented, third-party-audited quality management system covering design, raw material sourcing, machining tolerances, assembly procedures, and finished-product testing. For export customers and OEM partners requiring certified supply chains, these certifications provide the assurance that CMN Transmission meets internationally recognized manufacturing quality standards as a trusted agricultural gearbox manufacturer and fertilizer spreader supplier.

Kundenrezensionen

James Harrington, Broadacre Grain Farmer, Australia
"I've been running CMN's L-25A on my 1,800 litre Rauch spreader for two full seasons now covering about 3,200 hectares of wheat and canola. The original Comer packed in last spring and the CMN unit dropped straight in with no modifications at all. I honestly couldn't tell the difference in fitment. We spread urea, DAP, and potash blends through it and there's been zero oil leakage, no noise whatsoever. The oil change at 60 hours was easy with the drain plug positioned right at the bottom of the housing. Wouldn't hesitate to recommend CMN to any broad-acre farmer looking for a Comer replacement at a sensible price."

Markus Schreiber, Agricultural Equipment Dealer, Germany
"Received the gearbox in just 9 days to our farm in Germany, which I honestly didn't expect for a shipment from Korea. The packaging was solid the unit arrived in perfect condition. We fitted it to our Amazone ZA-M spreader and ran it straight into spreading season without any run-in issues. The spread pattern has been exactly as it was with the original Comer unit. Build quality looks very good the housing finish is clean and the shaft spline fits without any play. We ordered a second one as a spare to keep in the workshop just in case. Good product and very competitive price."

Robert Callahan, Fertilizer Application Contractor, United States
"We run about 40 spreading units across our contracting operation in the midwest and keeping gearboxes in stock is always a headache. I contacted CMN Transmission about sourcing 15 units and the response from their sales team was fast and very professional. They confirmed the L-25A spec matched our Comer units and shipped within a week. Every gearbox has performed without any issues after installation. The price per unit was significantly better than what we were paying through our usual dealer. I've already put in a follow-on order for another 20 units for next season. Great people to deal with."

Jean-Luc Moreau, Cereal & Rapeseed Farmer, France
"Good quality! I was a bit nervous buying direct from Korea for the first time but my neighbour recommended CMN and I am glad I listened. The gearbox arrived well packed and the 1.9:1 ratio is spot on for our Sulky spreader; the disc speed feels exactly right and we're getting the spread pattern we need for the parcels on our farm. The aluminium housing is noticeably lighter than the old cast gearbox we had before which is nice. Customer service replied to my questions in English very quickly despite the time difference. I'll be ordering again without question."

Pedro Augusto Melo, Agricultural Parts Importer, Brazil
"We import agricultural parts for the Brazilian market and decided to trial CMN's fertilizer spreader gearboxes after seeing them at an expo. We ordered 30 L-25A units in the 1.9:1 ratio and had them tested by three of our customer farms across Mato Grosso do Sul running soybean and corn. Feedback from all three has been very positive no failures, correct fit on Comer-compatible spreaders, and the oil level check is easy for farm operators. Lead time was 18 days to Santos which is reasonable. We are now listing CMN as our preferred gearbox supplier for this spec and planning a larger order."

Carlos Fernandez Ruiz, Estate Farm Manager, Spain
"I manage parts procurement for a large estate near Córdoba and we've been using CMN gearboxes for two years now across our fertilizer spreader fleet. The technical support from CMN when we had questions about the oil specification for high summer temperatures was excellent; they responded with a detailed recommendation within a day. The gearboxes themselves have been completely trouble-free across the wheat and sunflower seasons, which in this climate is a real test. The 4.1 kg weight is a practical advantage when farm workers are doing field replacements. Would give 6 stars if I could."

Doug MacIntyre, Agricultural Machinery, Canada
"Our agri-machinery workshop in Ontario replaces a lot of spreader gearboxes through the season and we've switched our main Comer L-25A replacement stock to CMN over the last year. Fitment is perfect every time; no need to modify anything on the spreader. What's also impressed me is the consistency between units: when you order 10 pieces, all 10 are to the same standard, which isn't always the case with aftermarket parts. Shipping to Canada was about 12 days, which is fine for stock orders placed a month ahead of season. We've had zero warranty claims on the CMN units so far."

Gurpreet Singh, Vegetable Farm, India
"Bought this to replace a failed Comer on our vegetable farm in Punjab. Was initially concerned about sourcing parts from Korea but the CMN team provided very clear technical documentation and confirmed compatibility with our spreader model before we ordered. The unit arrived in good condition after about 14 days. Installation was straightforward; the 25mm output shaft matched our disc hub exactly. After 180 hours of spreading season we have had no issues at all. The oil level is easy to check with the plug arrangement on the housing. We run urea and DAP through it. Happy customer, will order again next season."

Marco Bianchi, Agricultural Machinery, Italy
"We represent several agricultural machinery brands in northern Italy and have tested these CMN gearboxes as a replacement for the Comer L-25A on our customers' equipment in the Po Valley. The build quality is good, the shaft tolerances are precise, and we have not encountered any mounting problems. Our customers have used these gearboxes to spread granular fertilizers on corn and wheat for an entire season without any issues. The price-to-quality ratio is decidedly competitive. We will continue to order from CMN as a certified alternative supplier."