Riduttore per presa di forza agricola per spandiconcime | Ricambio per Comer L-25J

The Agricultural PTO gearbox with a 1:1.9 gear ratio for fertilizer spreaders, band saws, and light mower drives. Handles up to 11 kW (15 HP) input with 22.7 daNm output torque. Direct replacement for the Comer L-25J with matching shaft and mounting dimensions. 1 3/8 inch 6-spline input, 22 mm output.

Fertilizer Spreader PTO Gearbox Overview

The L-25J is a lightweight aluminium-housed riduttore della presa di forza engineered for fertilizer broadcasting equipment, band saw drives, and small mower applications. This riduttore per presa di forza agricola delivers a 1:1.9 speed-increasing ratio (or 1.9:1 in reducing mode), converting the 540 RPM PTO input into the higher shaft speeds that spreader discs and distributor mechanisms require for even material dispersal. Maximum output torque reaches 22.7 daNm, and the increasing configuration handles up to 11 kW (15 HP) of input power — well-matched to the 20-40 HP compact tractors widely used on Korean vegetable farms, greenhouses, and orchard operations.

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Questo Sostituzione del riduttore della presa di forza is manufactured as a direct dimensional match for the Comer Industries L-25J. Every critical interface — input spline (1 3/8-inch, 6-spline Type A), output shaft (22 mm Type D), and housing mounting face — mirrors the original design. The aluminium housing holds total weight to just 4.1 kg, a practical advantage on smaller tractors where implement weight affects three-point hitch balance and fuel consumption. The gearbox ships dry, giving operators flexibility to choose their preferred 80W-90 lubricant and fill the 0.35 L reservoir before first use.

Korea Ever-Power PTO Shaft Co., Ltd produces this gearbox under ISO 9001-certified quality controls with individual bench testing for gear noise, seal integrity, and dimensional accuracy. Our Korea-based logistics delivers within 2-4 business days nationwide, with same-day dispatch on orders confirmed before 2 PM KST.

Specifiche tecniche

The table below lists verified performance parameters for this riduttore della presa di forza del trattore. All torque and power figures correspond to standard 540 RPM PTO input. The aluminium housing provides natural corrosion resistance — important when handling chemical fertilizer materials — combined with adequate structural rigidity for this power class.

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Specifiche Dettaglio
Applicazione Mowers, chemical fertilizer spreaders, band saws
Coppia massima in uscita 22.7 daNm
Potenza in ingresso (crescente) 11 kW / 15 HP
Potenza in ingresso (riduttiva) 7 kW / 9.5 HP
Rapporto (crescente) 1 : 1.9
Rapporto (riduttivo) 1.9 : 1
Gear Arrangement (Reducing) 3 - 4
Coppia in uscita (in aumento) 9.9 daNm
Albero X (Ingresso) 1 3/8" (6) Tipo A
Albero Z (Uscita) 22 mm Type D
Materiale per alloggi Alluminio
Capacità del petrolio 0.35 L
Olio di grado SAE 80W-90
Intervallo di cambio olio 500 ore
Navi con petrolio No (asciutto)
Peso 4.1 kg

Replace oil after the first 50 operating hours. Regular changes every 500 hours thereafter.

Structure and Material Engineering

Housing and Sealing Design

The L-25J uses a two-piece aluminium alloy housing that splits along the gear plane, secured by precision-machined mating faces and high-strength cap screws. Aluminium was selected for this riduttore della presa di forza application class because fertilizer spreading equipment benefits from low weight (reducing hitch load on sub-30 HP tractors) and natural corrosion resistance when exposed to chemical dust and moisture. The housing walls maintain concentricity within tight tolerances to keep gear mesh geometry consistent across the full service life of the unit.

Gear and Bearing Assembly

Inside, a pair of spiral bevel gears transfers power through a 90-degree turn. Gear teeth are precision-ground after heat treatment, producing a surface finish that supports a stable oil film at the contact zone. Taper roller bearings on both shafts absorb the combined radial and axial loads from the bevel mesh. The input shaft seal uses a double-lip nitrile rubber design rated for the temperature swings common in outdoor agricultural work. The output seal includes an additional dust lip to keep abrasive fertilizer particles out of the bearing cavity. A magnetic drain plug captures ferrous wear particles, serving as a visual indicator of internal wear at each oil change.

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PTO Gearbox Selection Guide for Spreader Equipment

Selecting the right gearbox for fertilizer spreading equipment requires matching several parameters. Follow this checklist to confirm the L-25J is the correct fit:

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  • Confirm PTO speed. The L-25J is designed for 540 RPM input. Verify your tractor setting — using 1000 RPM will exceed the torque limits.
  • Verify input shaft spline. This unit accepts a 1 3/8-inch, 6-spline (Type A) PTO shaft. If your tractor uses a 1 3/4-inch, 20-spline output, you need an adapter or a different model.
  • Check output shaft diameter. The 22 mm cylindrical shaft (Type D) must match your spreader's input bore. Even a 1-2 mm mismatch prevents proper coupling.
  • Match the gear ratio. At 1:1.9 the output spins roughly 1,026 RPM from 540 RPM input. If your spreader needs a different speed, check other models in our PTO gearbox range.
  • Confirm power requirements. This gearbox handles up to 11 kW (15 HP) in increasing mode. Add a 15-20% safety margin to your actual draw.
  • Check mounting orientation. The 90-degree shaft layout must align with your PTO shaft without excessive universal joint angle.

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Comparison: Ever-Power L-25J vs. Original Equipment

Side-by-side specifications to help evaluate this PTO gearbox for sale against the original unit:

Caratteristica Ever-Power L-25J Comer L-25J (OEM)
Rapporto di trasmissione 1:1.9 / 1.9:1 1:1.9 / 1.9:1
Coppia massima in uscita 22.7 daNm 22.7 daNm
Materiale per alloggi lega di alluminio lega di alluminio
Peso 4.1 kg 4.1 kg
Shaft Dimensions 1 3/8" 6-spline / 22 mm 1 3/8" 6-spline / 22 mm
Garanzia 12 mesi Varies by dealer
Korea Delivery 2-4 business days 2-6 weeks (import)
Price Range 30-50% below OEM Full OEM pricing

Disclaimer: The brand names mentioned above are used solely for cross-referencing purposes to help customers identify compatible replacements. Korea Ever-Power PTO Shaft Co., Ltd does not sell or manufacture counterfeit products, nor does this comparison imply any affiliation with or endorsement by the referenced brands.

Domande frequenti

What does a PTO gearbox do on a fertilizer spreader?
The gearbox converts the tractor's 540 RPM PTO rotation into the output speed required by the spreader mechanism. The L-25J's 1:1.9 ratio increases shaft speed to roughly 1,026 RPM, spinning the spreader discs fast enough for wide, even granular fertilizer dispersal across the field.
Is the aluminium housing durable enough for daily farm use?
Yes. Aluminium alloy housings are standard in this power class across all major manufacturers. The L-25J operates within a 15 HP envelope — well inside the structural limits. The material also offers natural corrosion resistance when exposed to chemical fertilizer dust and moisture.
How often should I change the oil in this gearbox?
Change after the first 50 hours, then every 500 hours or once per year. Use SAE 80W-90 gear oil, 0.35-litre capacity.
Can this agricultural gearbox work on equipment other than fertilizer spreaders?
The L-25J fits any application needing a 1:1.9 (or 1.9:1) right-angle drive within its power and torque ratings. Common alternatives include small mower drives, band saw transmission, and light mixer heads.
What does the L-25J designation mean?
The "L" indicates the compact aluminium housing series, "25" refers to the frame size class, and "J" denotes the specific shaft configuration. The full designation tells technicians exactly which dimensional and performance envelope to expect from this riduttore della presa di forza.
Does this gearbox come pre-filled with oil?
No. The unit ships dry to prevent leakage during transport and to let you select your preferred lubricant brand. Filling takes under a minute — add 0.35 litres of 80W-90 gear oil through the fill port before first use.
How do I confirm the L-25J fits my specific spreader?
Check your existing gearbox nameplate. If it reads "L-25J" or "Comer L-25J" or matches the shaft dimensions (1 3/8" 6-spline input, 22 mm output), the Ever-Power unit is a direct fit. For verification, email a photo of your current gearbox to our team.

Recensioni dei clienti

Han Ji-won, Greenhouse Vegetable Farmer, Jeju-do (primavera 2025)
"I spread pelleted fertilizer across 4 hectares of cabbage. The original gearbox on my spreader was seized and the European replacement quote was absurd for such a small part. This L-25J arrived in 3 days, weighed exactly the same, shaft fit was perfect. Ran the entire spring season — maybe 60 hours — without a single issue."
Bae Sung-hoon, Agricultural Supply Shop Owner, Daegu (winter 2024)
"Stock a few of these for walk-in customers. The pricing lets me offer fair markup while still undercutting OEM parts significantly. Quality has been consistent — zero returns across a dozen units sold."
Song Hye-jin, Mixed Crop Farmer, Gyeonggi-do (fine 2024)
"Very light gearbox — matters on my 25 HP tractor where every kilogram counts at the hitch. After a full year, no visible corrosion from fertilizer dust. I rinse the whole spreader with water after each use."
Ryu Dong-hyuk, Orchard Manager, Chungcheongnam-do (estate 2025)
"Needed a replacement for our lime spreader between apple rows. The 1:1.9 ratio gives correct disc speed for even throw. Technical team replied to my oil question within a couple hours."
Kang Eun-bi, Farm Equipment Mechanic, Jeollanam-do (inizio 2025)
"I install these for clients. Machining on mounting faces is clean, shaft dimensions accurate to spec. No shimming needed across five L-25J units fitted. Bearings tight, seals properly seated."
Lim Seung-ho, Potato Farmer, Gangwon-do (autumn 2025)
"Bought two — one for the spreader, one spare. At this price point, keeping a backup on the shelf is a no-brainer. About 90 hours on the primary unit so far, running fine."

Perché scegliere Korea Ever-Power

  • Over 20 years manufacturing and exporting agricultural transmission components across Asia, Europe, and the Americas.
  • ISO 9001-certified production with dedicated testing for every gearbox unit before dispatch.
  • Korea-based warehouse — orders before 2 PM KST ship same day, 2-4 business day delivery nationwide.
  • 400+ riduttore della presa di forza models covering Comer, Bondioli Pavesi, Omni Gear, and other OEM replacements.
  • Technical support team for cross-referencing, shaft verification, and selection guidance.
  • Factory-direct pricing — 30-50% below European OEM parts — with volume discounts for cooperatives and dealers.
  • 12-month warranty backed by local after-sales service. Full Albero cardanico E distributore agricolo catalogue available.

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