{"id":1653,"date":"2026-04-10T05:38:10","date_gmt":"2026-04-10T05:38:10","guid":{"rendered":"https:\/\/agricultural-gearbox.net\/?post_type=product&p=1653"},"modified":"2026-04-10T05:38:10","modified_gmt":"2026-04-10T05:38:10","slug":"ep-l25a-fertilizer-spreader-gearbox-replacement-of-comer-code","status":"publish","type":"product","link":"https:\/\/agricultural-gearbox.net\/fr\/product\/ep-l25a-fertilizer-spreader-gearbox-replacement-of-comer-code\/","title":{"rendered":"EP-L25A Fertilizer Spreader Gearbox \u2013 Replacement of Comer Code"},"content":{"rendered":"
\n

EP-L25A Fertilizer Spreader Gearbox \u2013 Replacement of Comer Code<\/h2>\n<\/div>\n

 <\/p>\n

1. Technical Specifications \u2013 EP-L25A<\/h2>\n

The following table presents 20 verified technical parameters for the EP-L25A fertilizer spreader gearbox<\/strong>. All dimensional data are given in SI units. Operators sourcing gearbox for fertilizer spreader replacement parts<\/strong> should verify shaft tolerance compatibility with their existing equipment before installation.<\/p>\n

\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Param\u00e8tre<\/th>\nValeur \/ Sp\u00e9cification<\/th>\n<\/tr>\n<\/thead>\n
Mod\u00e8le<\/td>\nEP-L25A<\/td>\n<\/tr>\n
Gear Type<\/td>\nBevel Gear<\/td>\n<\/tr>\n
Ratio \u2013 Increasing Mode<\/td>\n1 : 3<\/td>\n<\/tr>\n
Ratio \u2013 Reducing Mode<\/td>\n3 : 1<\/td>\n<\/tr>\n
Input Power (Increasing)<\/td>\n5 kW \/ 6.8 HP<\/td>\n<\/tr>\n
Input Power (Reducing)<\/td>\n2.2 kW \/ 3 HP<\/td>\n<\/tr>\n
Output Torque (Increasing)<\/td>\n2.9 daNm<\/td>\n<\/tr>\n
Input Shaft Diameter (Shaft X)<\/td>\n\u00d8 25 mm h6<\/td>\n<\/tr>\n
Output Shaft Diameter (Shaft Z)<\/td>\n\u00d8 25 mm h6<\/td>\n<\/tr>\n
Mat\u00e9riaux de construction<\/td>\nAluminium Alloy (Die-Cast)<\/td>\n<\/tr>\n
Net Weight<\/td>\n4.2 kg<\/td>\n<\/tr>\n
Max. Oil Capacity<\/td>\n0.35 L<\/td>\n<\/tr>\n
Oil SAE Viscosity Grade<\/td>\n80W-90<\/td>\n<\/tr>\n
First Oil Change Interval<\/td>\n50 \u2013 70 operating hours<\/td>\n<\/tr>\n
Subsequent Oil Change Interval<\/td>\n500 h or min. once per year<\/td>\n<\/tr>\n
Clutch Type<\/td>\nIntegrated Freewheeling Clutch<\/td>\n<\/tr>\n
Operating Temperature Range<\/td>\n-20 \u00b0C to +60 \u00b0C<\/td>\n<\/tr>\n
Protection Class (IP Rating)<\/td>\nIP54<\/td>\n<\/tr>\n
Mounting Position<\/td>\nHorizontal \/ Vertical<\/td>\n<\/tr>\n
Overall Dimensions (L \u00d7 W \u00d7 H)<\/td>\n185 mm \u00d7 120 mm \u00d7 145 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Note: The gearbox is supplied without oil. It must be filled with 80W-90 gear oil before first use. Always consult the original equipment manual for oil fill procedures.<\/em><\/p>\n

<\/p>\n

\n

2. Five Key Product Advantages<\/h2>\n

These advantages reflect real operational feedback gathered from farms and equipment dealers across South America, Europe, and Southeast Asia. Each point addresses a recurring challenge faced by agronomists and equipment operators who rely on a dependable fertilizer spreader gearbox<\/strong> season after season.<\/p>\n

<\/p>\n

\n
\n

01 \u2014 Direct Comer Code Compatibility<\/h3>\n

The EP-L25A is a drop-in replacement that mirrors the bolt pattern, shaft dimensions, and mounting geometry of the original Comer L-25A. This means zero downtime for adaptation work. Equipment dealers and farm workshops in Brazil, Colombia, and Argentina can swap the gearbox during a single maintenance shift without machining or custom brackets, restoring the spreader to full operation immediately.<\/p>\n<\/div>\n

\n

02 \u2014 Dual-Ratio Flexibility<\/h3>\n

With a selectable gear ratio of 1:3 (increasing) or 3:1 (reducing), the EP-L25A adapts to a wide range of application scenarios \u2014 from high-speed broadcast spreading to slow, precision band application. This built-in versatility makes it one of the more practical fertilizer spreader gearbox parts<\/strong> options for operations that run multiple fertilizer programs within the same season.<\/p>\n<\/div>\n

\n

03 \u2014 Lightweight Aluminium Housing<\/h3>\n

Weighing only 4.2 kg, the precision die-cast aluminium housing reduces the overall mass of the spreader implement, decreasing fuel consumption and reducing wear on the PTO shaft and tractor linkage. Aluminium also offers natural resistance to corrosion from fertilizer dust and residue, extending the service life of the housing without protective coatings that can chip or degrade.<\/p>\n<\/div>\n

\n

04 \u2014 Integrated Freewheeling Clutch<\/h3>\n

The built-in freewheeling clutch decouples the output from the input during tractor deceleration or directional changes, eliminating reverse-torque shock that can crack gear teeth or damage the spreader disc assembly. For operators working on irregular terrain or in orchards with frequent turning, this protection mechanism represents a meaningful improvement in drivetrain reliability over gearboxes without a clutch mechanism.<\/p>\n<\/div>\n

\n

05 \u2014 Low Maintenance, Long Service Intervals<\/h3>\n

With an oil change interval of 500 operating hours (using SAE 80W-90 gear oil) and a maximum oil capacity of only 0.35 L, the EP-L25A places a minimal servicing burden on the farm team. The compact design and accessible oil drain point make routine maintenance straightforward even in field conditions. Proper lubrication adherence is all that is required to achieve a multi-season operational lifespan.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

3. Working Principle of the Fertilizer Spreader Gearbox<\/h2>\n

The EP-L25A operates on a bevel gear transmission principle. Rotational energy enters the gearbox through the input shaft (\u00d825 mm, h6 tolerance), which is connected directly to the tractor’s Power Take-Off (PTO) shaft via a compatible drive coupling. The input bevel gear meshes with the output bevel gear at a 90-degree angle, converting the axial rotation from the PTO into a perpendicular output rotation that drives the spreader disc or distribution mechanism of the implement.<\/p>\n

In the increasing-ratio mode (1:3), the gearbox accelerates the output shaft to three times the input RPM, which is used when a high disc speed is required for wide-area broadcast spreading. In the reducing-ratio mode (3:1), the output speed is lowered to one-third of the input speed, delivering higher torque at the output for heavier granular materials or precision band spreading applications. The ratio selection is determined by the physical orientation of the gearbox assembly during installation \u2014 a straightforward mechanical configuration that requires no additional controls or actuators.<\/p>\n

The integrated freewheeling clutch is positioned on the output side and engages automatically under normal operating torque. When the input speed drops below the output inertia \u2014 such as during a rapid deceleration \u2014 the clutch disengages to allow the output shaft to coast freely, preventing reverse-load transmission back through the gear mesh. This is a passive, automatic protection feature that operates without driver intervention, making it particularly effective in continuous-field operations where the PTO is frequently engaged and disengaged. The entire mechanism is lubricated by a small quantity of 80W-90 gear oil retained within the sealed aluminium housing, which provides boundary-film lubrication at the gear contact faces and bearing surfaces throughout the full operating temperature range.<\/p>\n<\/div>\n

\n

4. Material & Construction Quality<\/h2>\n

The selection of materials in the EP-L25A reflects the realities of agricultural field conditions rather than laboratory benchmarks. The housing is produced from high-pressure die-cast aluminium alloy, chosen for its combination of light weight, thermal conductivity, and natural resistance to fertilizer-driven corrosion. In tropical field environments \u2014 such as those prevalent across the Cerrado region of Brazil, where daytime temperatures can exceed 38 \u00b0C for extended periods \u2014 the aluminium housing dissipates gear-generated heat more efficiently than cast iron alternatives, which contributes to longer lubricant life and more stable operating viscosity at the gear mesh interface.<\/p>\n

The bevel gears themselves are machined from medium-carbon alloy steel and subjected to a case-hardening treatment that produces a hard, wear-resistant tooth surface over a tough, impact-absorbing core. This hardened layer resists abrasive wear from the fine metallic particles that can accumulate in the gear oil over extended operating periods, while the ductile core absorbs the periodic shock loads that occur when the PTO is engaged under load. Gear tooth profiles are ground to a controlled tolerance class that ensures quiet meshing, minimal backlash, and consistent power transfer throughout the full service life of the gearbox.<\/p>\n

Shaft seals are produced from NBR (nitrile butadiene rubber), a compound selected for its resistance to both petroleum-based gear oils and the dilute chemical exposure common in fertilizer application environments. The seal lips are spring-loaded to maintain consistent contact pressure as the seal material ages, preventing lubricant leakage and ingress of fertilizer dust even after multiple seasons of continuous field use. All fastening hardware uses stainless steel or zinc-plated carbon steel to resist surface oxidation in humid field conditions.<\/p>\n<\/div>\n

\"agricultural-gearbox-products-EP-L25A<\/p>\n

\n

5. Application Scenarios<\/h2>\n

The EP-L25A fertilizer spreader gearbox<\/strong> is engineered to operate reliably across a range of agricultural and land-management settings. The following scenarios represent the primary environments and equipment configurations in which this model is commonly deployed.<\/p>\n

\n
\n

Grain Crop Fertilization (Brazil & Argentina)<\/h3>\n

Across the Mato Grosso, Paran\u00e1, and Pampas regions, soybean and corn operations use centrifugal disc spreaders driven by tractor PTOs to apply urea, MAP, and compound NPK fertilizers at planting and topdressing stages. The EP-L25A’s 1:3 increasing ratio delivers the disc speed needed for broadcast widths of 12\u201324 metres, allowing a single tractor pass to cover wide beds efficiently and reducing the number of field operations per campaign.<\/p>\n<\/div>\n

\n

Pasture & Grassland Management<\/h3>\n

Livestock farms throughout Brazil’s Cerrado and Colombia’s Llanos Orientales use tractor-mounted spreaders to apply lime and phosphate fertilizers over large pasture blocks. Operating conditions often involve rough terrain and frequent PTO engagement cycles. The integrated freewheeling clutch in the EP-L25A protects the drivetrain from abrupt stop-start loads, making it well suited to the irregular duty cycles typical of pasture fertilization work.<\/p>\n<\/div>\n

\n

Sugarcane Ratoon Fertilization<\/h3>\n

Brazil’s sugarcane industry \u2014 the world’s largest \u2014 requires intensive nitrogen and potassium applications during ratoon regrowth periods. Spreader equipment fitted with the EP-L25A operates in narrow inter-row spacing conditions, where precise application rate control is critical. The 3:1 reducing ratio option allows the operator to run the spreader at lower disc speeds for targeted, low-drift application of granular urea in band placement configurations.<\/p>\n<\/div>\n

\n

Horticulture & Specialty Crops<\/h3>\n

Vegetable growing districts in Chile, Peru, and southern Brazil use smaller tractor-mounted spreaders for calcium, sulphur, and micronutrient applications across intensive cultivation beds. The compact dimensions (185 \u00d7 120 \u00d7 145 mm) and low weight of the EP-L25A make it compatible with mid-size utility tractors commonly used in horticultural operations, where equipment size and versatility are as important as mechanical durability.<\/p>\n<\/div>\n

\n

Lawn Care & Landscaping<\/h3>\n

Beyond row-crop agriculture, the EP-L25A can be adapted for use in commercial turf management \u2014 sports stadiums, municipal parks, and golf course rough areas in Uruguay, Brazil, and beyond. When paired with a compact spreader attachment, the gearbox powers even distribution of slow-release granular fertilizers, lime, and gypsum over large turf areas at the controlled disc speeds required for fine granule handling.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

6. How to Use the Fertilizer Spreader Gearbox<\/h2>\n

Correct installation and operation of the fertilizer spreader gearbox<\/strong> directly determines both the accuracy of fertilizer distribution and the long-term reliability of the equipment. The steps below reflect standard industry procedure for gearbox for fertilizer spreader how to use<\/strong> guidance and should be followed in conjunction with the spreader manufacturer’s own documentation.<\/p>\n

\n

Step 1 \u2014 Fill with Oil Before First Use.<\/strong> The EP-L25A is supplied dry. Before connecting to any equipment, fill the housing with the specified 80W-90 gear oil to the maximum fill mark (0.35 L). Operating a dry gearbox, even briefly, will cause irreversible gear and bearing damage.<\/p>\n

Step 2 \u2014 Select Fertilizer and Calibrate the Spreader.<\/strong> Match the fertilizer type, particle size, and target application rate to the appropriate spreader disc speed setting. For broadcast applications requiring high disc RPM, the 1:3 increasing configuration is preferred. For low-drift or banded placement, use the 3:1 reducing arrangement.<\/p>\n

Step 3 \u2014 Verify PTO Shaft Compatibility.<\/strong> Confirm that the PTO shaft connecting the tractor to the fertilizer spreader gearbox<\/strong> is rated for the required power, is the correct length, and that the spline profile matches the input shaft (\u00d825 mm h6). Mismatched or worn PTO shafts are a leading cause of premature gearbox failure.<\/p>\n

Step 4 \u2014 Load Fertilizer and Set the Spread Width.<\/strong> Once the calibration is complete, load the hopper and set the spread-width deflectors or vane adjusters according to the target coverage pattern. Verify the pattern on a static test area before beginning field work.<\/p>\n

Step 5 \u2014 Engage the PTO Gradually.<\/strong> Start the tractor moving at operating speed before engaging the PTO. Engaging the PTO while stationary can create a torque spike that exceeds the gearbox’s rated input capacity. The freewheeling clutch provides some protection, but smooth engagement practice is always preferable.<\/p>\n

Step 6 \u2014 Monitor Distribution During Operation.<\/strong> Periodically inspect the spread pattern for symmetry and uniformity. Uneven distribution can indicate a blocked outlet, a damaged disc, or a shaft misalignment problem \u2014 all of which should be investigated before continuing to apply fertilizer.<\/p>\n

Step 7 \u2014 Disengage and Clean After Each Session.<\/strong> Disengage the PTO before stopping. After each field session, clean fertilizer residue from the exterior of the gearbox housing and check for any oil seepage at the shaft seals. Fertilizer dust is hygroscopic and will attract moisture that can accelerate corrosion if left in contact with the housing over extended periods.<\/p>\n<\/div>\n<\/div>\n

\"agricultural-gearbox-products-EP-L25A<\/p>\n

\n

7. Safety & Operating Precautions<\/h2>\n

Safe fertilizer spreader gearbox operation<\/strong> requires attention to both personal safety and equipment integrity. The following precautions are relevant to anyone installing, operating, or servicing the EP-L25A in a professional agricultural context.<\/p>\n