Description
EP-L25J Fertilizer Spreader Gearbox – Replacement of Comer Code L-25J
SKU: EPT-L25J-1 | Category: Fertilizer Spreader Gearbox / Agricultural Gearbox | Housing: Aluminium | Weight: 4.1 kg
1. Technical Specifications – EP-L25J fertilizer spreader gearbox
The following table outlines 20 key technical parameters for the EP-L25J fertilizer spreader gearbox. Scroll horizontally on smaller screens.
| Paramètre | Valeur / Spécification |
|---|---|
| SKU / Model | EPT-L25J-1 |
| Replaces OEM Code | Comer Code L-25J |
| Matériaux de construction | Aluminium alloy |
| Net Weight | 4.1 kg |
| Gear Arrangement (Reducing) | Stage 3 – 4 |
| Ratio – Increasing Mode | 1 : 1.9 |
| Ratio – Reducing Mode | 1.9 : 1 |
| Max Output Torque (Reducing) | 22.7 daNm |
| Output Torque (Increasing) | 9.9 daNm |
| Input Power – Increasing | 11 kW / 15 HP |
| Input Power – Reducing | 7 kW / 9.5 HP |
| Input Shaft X (Increasing) | 1 3/8″ – 6 splines, Series A |
| Input Shaft Z (Reducing) | 22 mm (D) |
| Max Oil Capacity | 0.35 L |
| Recommended Oil Grade | SAE 80W-90 gear oil |
| Oil Change Interval | Every 500 operating hours (first change at 50 h) |
| Operating Temperature Range | -20°C to +80°C |
| Ingress Protection Rating | IP54 (dust protected, splash resistant) |
| Seal Type | Double-lip oil seals on both shafts |
| Mounting / Drive Interface | 4-bolt flange mount, PTO shaft driven |
2. Five Key Product Advantages
Direct Comer Code L-25J Replacement
Engineered to exact dimensional tolerances matching the original Comer L-25J specification. No adapter plates, no shaft modifications — bolt it on and drive away. This makes the EP-L25J fertilizer spreader gearbox the preferred choice for farmers and dealers looking for a fast, cost-effective gearbox for fertilizer spreader replacement without lengthy downtime.
Dual-Mode Gear Operation
The L-25J supports both increasing (1:1.9) and reducing (1.9:1) gear ratios within a single compact housing. This versatility allows the same gearbox to serve across different spreader platforms and application rate requirements, reducing the spare-parts inventory burden for equipment dealers and large farming cooperatives in South America.
Sealed Lubrication System
An internal oil-filled chamber pre-loaded with SAE 80W-90 gear oil, combined with double-lip seals on both input and output shafts, ensures consistent lubrication under sustained load. The 500-hour oil change interval reduces routine maintenance frequency significantly compared to older gearbox designs requiring attention every 100–150 hours.
Aluminium Housing for Weight Efficiency
At just 4.1 kg, the aluminium alloy housing significantly reduces the overall weight burden on spreader disc assemblies versus cast iron alternatives. Lower rotating mass translates into smoother PTO engagement, reduced vibration transfer to the spreader frame, and longer bearing life — all critical factors in precision fertilizer spreader gearbox design.
Wide Material Compatibility
Tested with granular urea, ammonium nitrate, compound NPK blends, lime, and other common Brazilian and international agricultural inputs. The enclosed drive train prevents fertilizer dust from contaminating gear teeth or bearing surfaces, addressing one of the most common failure causes reported by operators using open-drive spreading systems in high-humidity regions.
3. How the Fertilizer Spreader Gearbox Works
Power enters the EP-L25J through the input shaft — either via a 1 3/8″ (6-spline, Series A) PTO shaft connection or a 22 mm solid shaft depending on the selected shaft configuration. The input shaft drives a gear set arranged inside the aluminium housing, where the chosen ratio (increasing or reducing) is achieved through a precisely meshed pair of helical-profile spur gears. Internal gear geometry is calculated to maintain consistent output torque across the full operating speed range, preventing torque spikes that can fracture spreader disc hubs or shear drive bolts.
Output torque in reducing mode peaks at 22.7 daNm — sufficient to drive twin-disc centrifugal spreader systems handling dense fertilizer materials at spreader speeds typical of European and Brazilian spread-rate standards. In increasing mode, output torque is 9.9 daNm, suited for higher-speed disc applications where spread width uniformity is prioritized over raw force. Oil circulation within the sealed chamber is maintained passively through gear splash lubrication, distributing SAE 80W-90 oil across bearings and gear tooth contact zones during every revolution. The maximum oil capacity of 0.35 litres maintains a consistent film thickness at all operating temperatures within the -20°C to +80°C rated range, ensuring the fertilizer spreader gearbox working performance remains stable from cold morning starts to peak midday heat common in tropical Brazilian growing regions.
4. Materials and Construction Quality
The housing of the EP-L25J is cast from high-grade aluminium alloy selected for its combination of structural stiffness, corrosion resistance, and thermal conductivity. Unlike cast iron housings that are common in heavy-duty drives, the aluminium alloy construction of this fertilizer spreader gearbox keeps weight low while still delivering the rigidity needed to maintain gear mesh alignment under continuous load. The alloy is treated with a shot-blasted surface finish before assembly to improve paint adhesion and remove any surface micro-porosity that could allow oil seepage under pressure.
Internal gear wheels and pinions are machined from case-hardened medium-carbon steel, then heat-treated to achieve surface hardness values consistent with high-cycle agricultural drive applications. Each gear profile is hobbed and shaved to DIN quality standards before assembly, ensuring the backlash and tooth-contact patterns fall within specification across the full operating torque range. Bearings are selected from quality-controlled suppliers and dimensionally verified before installation. Input and output shaft seals are dual-lip nitrile rubber seals designed to retain SAE 80W-90 oil at shaft surface speeds corresponding to PTO operating rates of 540 RPM. The external powder-coat paint layer provides additional protection against fertilizer granule abrasion and moisture ingress through the housing exterior — important for units stored outdoors between seasonal use periods.
5. Application Scenarios
The EP-L25J fertilizer spreader gearbox is a multi-application drive unit suited to a wide range of field tasks beyond its primary role in fertilizer distribution. Below are the primary use environments where this gearbox for fertilizer spreader delivers proven performance.
Centrifugal Fertilizer Spreaders
The primary and most common application. The EP-L25J drives the rotating disc or twin-disc assemblies of centrifugal broadcast spreaders used to apply granular urea, NPK compounds, potash, superphosphate, and lime across crop fields. In Brazil’s major soybean, corn, and sugarcane production regions — states like Mato Grosso, Paraná, and Goiás — centrifugal spreaders paired with this gearbox are among the most widely used tools during pre-planting soil correction and top-dress fertilization campaigns.
Precision Seeder Drives
The L-25J’s precisely controlled gear ratio makes it well-suited as a drive unit for pneumatic and mechanical seeders where metering accuracy directly influences plant population and yield outcomes. Seeder applications benefit from the stable torque output across variable ground speeds, allowing operators to maintain consistent seed spacing even on sloped terrain or in fields with variable soil resistance. The dual-ratio capability allows adaptation across seeder models with differing disc or roller speed requirements.
Mower and Cutting Equipment
Listed in the Comer original specification, the L-25J configuration is also used in agricultural mower drive systems, particularly for disc mowers and flail mowers commonly used for cover-crop management and pasture maintenance. The gearbox’s compact size and low weight make it a practical choice for toolbar-mounted mower decks where ground clearance and weight distribution are critical design constraints. The sealed design performs well in the high-debris environment created by grass and plant residue during cutting operations.
Lawn, Turf and Estate Equipment
Beyond row-crop agriculture, the EP-L25J fertilizer spreader gearbox finds use in large-scale turf management, sports field maintenance, and estate grounds applications. Golf courses, sports stadiums, and large landscaped estates often use spreader equipment for sand top-dressing, seed oversowing, and granular fertilizer application to turf areas. The compact aluminium housing fits neatly into the lighter-duty drive systems common in ride-on spreader equipment used in these non-agricultural contexts without adding excessive weight to the carrier vehicle.
Band Saw and Industrial Drive Variants
The Comer L-25J specification also has a history of use in band saw drive applications, particularly in sawmill and wood-processing environments where compact, sealed gear drives are needed for secondary feed and tensioning systems. The EP-L25J fertilizer spreader gearbox shares the same geometry, making it a viable cross-industry replacement unit for operators in these sectors who maintain compatibility with the original Comer L-25J mounting pattern.
6. Fertilizer Spreader Gearbox Installation Guide
Proper fertilizer spreader gearbox installation is critical to achieving reliable long-term performance. The steps below are based on general best-practice procedures; always cross-reference the documentation provided with your specific spreader platform.
- Prepare the mounting surface: Remove any old gearbox, adapter, or spacer components. Clean the mounting face on the spreader frame with a wire brush to remove rust, old gasket compound, and fertilizer deposits. Inspect for cracks or elongated bolt holes before proceeding.
- Align the gearbox: Position the EP-L25J against the mounting face and confirm alignment of the input shaft axis with the PTO or drive shaft centre line. Use precision shims if minor angular or parallel offset is present. Misalignment of more than 1.5° on the input shaft will cause premature bearing wear.
- Install mounting bolts: Use grade 8.8 fasteners at the specified torque. Tighten in a diagonal cross-pattern in three stages (30%, 70%, 100% of final torque) to ensure uniform clamping force across the flange face.
- Connect the PTO shaft: Attach the PTO shaft (1 3/8″ 6-spline for shaft X configuration) ensuring the safety shield is properly installed and the snap-ring is fully seated in the shaft groove. Verify that the PTO shaft operating angle does not exceed 15° during the full range of tractor-implement movement.
- Fill with oil: The unit is shipped without oil. Before the first start, fill through the filler plug to 0.35 L capacity using SAE 80W-90 gear oil. Re-check the level after the first 10 minutes of operation as some oil will distribute through bearings and seals.
- Break-in service: After the first 50 hours of operation, drain and replace the oil to remove metallic wear particles generated during the initial gear and bearing seating period. This first service interval is critical to long gearbox life and should not be skipped.
7. Regulatory Compliance – Brazil and International Standards
Brazil (Primary Market)
Agricultural machinery imported or sold in Brazil must comply with the regulatory framework overseen by MAPA (Ministério da Agricultura, Pecuária e Abastecimento). Under MAPA’s guidelines, agricultural implements and their drive components must meet applicable ABNT NBR technical standards covering mechanical safety, load capacity, and operator protection. Specifically, NBR ISO 11684 governs safety signs and labels on agricultural machinery — any spreader system using this gearbox operating in Brazil should carry hazard markings on the PTO shaft guard and rotating component zones in accordance with this standard. INMETRO (Instituto Nacional de Metrologia, Qualidade e Tecnologia) certification may also be relevant for certain regulated product categories sold through formal commercial channels. Importers should verify current SISCOMEX registration requirements when importing agricultural machinery components as part of commercial shipments.
European Union
The EU Machinery Directive 2006/42/EC establishes essential health and safety requirements for machinery placed on the European market. Agricultural machinery fitted with PTO-driven gearboxes must demonstrate conformity with this directive, typically through CE marking accompanied by a Declaration of Conformity. ISO 4254-7 (Agricultural Machinery – Safety – Fertilizer Spreaders) provides the specific safety performance criteria for trailed and mounted spreader equipment including drive gearboxes. Buyers in Germany, France, the Netherlands, and other major European agricultural markets will typically require CE documentation as a condition of purchase or import.
United States and Canada
In the United States, OSHA Standard 1928.57 (Guarding of Farm Field Equipment) applies to operator safety around rotating PTO components. ASABE (American Society of Agricultural and Biological Engineers) publishes voluntary standards relevant to fertilizer spreader design and gearbox performance including ASABE S318 (Safety for Agricultural Equipment). In Canada, CSA B352 (Rollover Protective Structures for Agricultural Equipment) and applicable provincial health and safety legislation govern machinery in agricultural workplaces. Buyers in North America operating in commercial farming environments should review applicable OSHA and ASABE standards when commissioning equipment that uses this gearbox.
Australia and New Zealand
AS/NZS 4600 (Cold-Formed Steel Structures) governs structural steel components in machinery frames, while AS 2671 (Hydraulic Fluid Power) and relevant Machinery Safety Standard AS 4024 apply to agricultural drive systems. In Australia, Safe Work Australia’s Model Code of Practice for Managing Risks of Plant in the Workplace covers powered equipment including PTO-driven units. Importers and distributors should also consult the Australian Pesticides and Veterinary Medicines Authority (APVMA) guidelines when equipment is used in conjunction with fertilizer or crop-protection product applications.
8. About Us
We are a dedicated manufacturer and supplier of agricultural gearboxes and power transmission components with decades of production experience. Our product range covers the full spectrum of fertilizer spreader gearbox manufacturers requirements — from standard catalogue replacement units to custom-engineered solutions for specialty crop machines. Every unit leaving our production facility passes through multi-point dimensional inspection, oil seal pressure testing, and a final rotation check before shipment.
We hold ISO 9001:2015 certification for our quality management system, and our products are tested in compliance with relevant international machinery safety standards. For buyers in Brazil and South America, we maintain stock of key SKUs including the EP-L25J fertilizer spreader gearbox to support fast-turnaround supply on a full-season schedule.
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9. Related Products – Complete Your Drive System
We manufacture the full range of components needed to build or maintain a complete fertilizer spreader power train. Pairing the EP-L25J with compatible drive components from a single supplier reduces fitment risk and simplifies warranty claims across the entire system.
PTO Shafts – Full Series
A correctly specified PTO shaft is the single most important companion component to any fertilizer spreader gearbox. The shaft must match the gearbox spline specification (1 3/8″ 6-spline for the EP-L25J input shaft X) and be sized for the operating torque and length requirements of your tractor-spreader combination. An undersized or incorrectly guarded PTO shaft is the leading cause of gearbox input bearing failures and a serious operator safety hazard. We supply telescoping PTO shafts with CE-certified full-length plastic safety shields across the complete range of agricultural drive applications. Browse our PTO Shaft range here to find the compatible shaft for your spreader model.
Drive Chains and Sprockets
For spreader configurations where a chain and sprocket secondary drive is used between the gearbox output shaft and the spreading disc shaft, we supply matched roller chain sets and precision-machined sprockets in all standard agricultural pitch sizes. Our chain and sprocket components are manufactured to ISO 606 standard and are available in simplex, duplex, and triplex configurations to match different spreader torque requirements. Using a matched chain-sprocket set from the same supplier as your gearbox ensures consistent quality across the entire drive train and simplifies the sourcing of fertilizer spreader gearbox parts and associated components.
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Éditeur : PXY
