EP-LF205 & EP-LF211 mower deck input gearbox – 30HP Dual Ratio and 20HP Single Ratio

EP-LF205 (left, 19kg) · EP-LF211 (right, 14.5kg)

Q1. What is your tractor's PTO output capacity?

Q2. What cross-shaft speed does your mower deck require?

Q3. What output interface does your cross-shaft coupling require?

One SKU for Two Cross-Shaft Standards

Disc mower decks from different manufacturers use either optic axis or taper spline connections to the cross-shaft, with no standard having achieved complete market dominance at the 30HP compact mower tier. The EP-LF205's dual output means one Korea Ever-Power part number covers both standards. For an agricultural machinery dealer or workshop stocking EP-LF205 as a replacement gearbox, a single unit in stock serves the majority of 30HP disc mower models regardless of which cross-shaft coupling standard was used in the original machine.

OEM: One Housing for Two Product Variants

Korean compact mower OEM manufacturers who offer their machine with both an optic axis cross-shaft and a taper spline cross-shaft option — as frequently seen in product catalogues serving multiple export markets with different local standards — use the EP-LF205 as their single input gearbox specification across both configurations. The cross-shaft coupling hardware changes between the two variants; the input gearbox does not. This simplifies the BOM, the sourcing, and the spare parts kit supplied with the machine.

Future-Proofing Replacement Stock

When stocking the EP-LF205 as a replacement gearbox, you are covered for the next customer whose mower uses a different output coupling standard than the current one — without ordering a second gearbox variant. In a workshop that services both optic-axis and taper-spline cross-shaft disc mowers, the EP-LF205's dual interface eliminates the need to maintain two separate LF-class gearbox part numbers at the 30HP tier.

Unified M5.0 Across Both EP-LF205 Ratios

Unlike the EP-RC31 which uses different modules for different ratios (M5.08 and M4.0), the EP-LF205 uses M5.0 for both its 1:1.46 and 1:1.93 configurations. This unified module approach simplifies production — one set of gear hobbing tooling covers both ratio configurations — while ensuring that the lower-ratio configuration (1:1.46, higher output torque) is not under-specified, since M5.0 provides adequate strength for the 1:1.46 load even though M4.x might suffice for the 1:1.93 configuration's lower output torque. The EP-LF205 prioritises structural consistency over minimal-weight optimisation.

GGG50 Housing — Disc Mower Input Duty

The input gearbox on a disc mower is directly in the PTO drive line — any blade-to-obstacle impact on the cutting deck propagates up the cross-shaft and into the input gearbox before reaching the overload clutch on the PTO shaft (if one is fitted). GGG50's micro-elastic deformation capacity protects the housing under these impact conditions. At 20–30HP, the impact loads are smaller than at 60–80HP but still present on every rock or stump contact during mowing operation. Both EP-LF211 and EP-LF205 housings are sized for mower input service, not merely for steady-state power transmission.

Carburised Gears HRC 58–62

Both models use the same carburising and quench-hardening specification as the rest of the EP range: 0.8–1.2mm case depth, HRC 58–62 tooth face hardness. At the disc mower input gearbox position, the gear mesh runs continuously for the full mowing session at steady PTO speed — the hardened tooth surfaces resist the micro-pitting and adhesive wear that develop under this sustained moderate-load, high-cycle-count operation that characterises mowing duty.

100% Load Test at Rated Power

Every EP-LF205 and EP-LF211 is bench-tested at its rated load (30HP and 20HP respectively) before dispatch. For the EP-LF205, the test is run at the ordered ratio — the 1:1.46 and 1:1.93 configurations produce different gear mesh dynamics and the test confirms each under its specific load conditions. Output shaft runout, bearing temperature, gear contact noise character, and oil seal integrity are all checked before packaging.

M5.0 and M3.36 precision gear hobbing — LF series production line

Han Seong-min Compact Disc Mower OEM Manufacturer · Jeonju, North Jeolla, South Korea · 2024

We make compact mowers for the Korean orchard and small-farm market — 1.0m and 1.2m working width on 25–30HP tractors. The EP-LF205 dual output was the main reason we adopted it: our 1.0m mower uses an optic axis cross-shaft coupling, our 1.2m uses taper spline. One EP-LF205 part number covers both. Before we found Korea Ever-Power, we stocked two separate gearbox variants. Now we stock one. Lead time is 4 days. Quality has been consistent across 14 months of production — no noise or seal issues reported by any of our dealers.

Kobayashi Emi Orchard Equipment Dealer · Yamanashi Prefecture, Japan · 2024

I supply orchard management equipment to grape farmers in Yamanashi. The compact mowers my customers use run on 15–20HP Kubota BX and Yanmar EF tractors. The EP-LF211 at 14.5kg is right for these light tractors — the previous replacement I was sourcing from Europe weighed 18kg and pushed some of my customers' BX tractors close to their hitch capacity limit. The EP-LF211 removes that concern. The 1:2.83 ratio gives the slow blade rotation appropriate for the vine-row ground cover management these farmers do. Five units supplied over 10 months, no problems reported. Korea Ever-Power delivers to Yamanashi in 6 days.

Oh Byeong-chan Agricultural Machinery Workshop · Wanju, North Jeolla, South Korea · 2024

My workshop does disc mower repairs for 40-plus farm customers across Wanju. The LF series gearboxes fail more often than the blade spindle units — they take everything the PTO delivers before the overload clutch has time to react. I stock both the EP-LF205 and EP-LF211 now. The EP-LF205's dual output has been useful twice already — once when a customer's mower had a taper spline cross-shaft I wasn't expecting from the model number, and once when I fitted a single stock unit to two different mowers in the same week that had different output couplings. No returns or callbacks on EP-LF series units in 12 months of stocking them.

Apirak Sriphat Agricultural Machinery Dealer · Chiang Mai, Thailand · 2025

I supply compact mowers and parts to farmers in the Chiang Mai highland vegetable growing areas. My customers use 20–30HP Chinese and Japanese compact tractors — Yanmar, Kubota, and several Chinese brands — with 1.0–1.2m disc mowers for grass and weed management between vegetable plots. The EP-LF205 at 30HP covers all my 25–30HP customers and the dual output means I don't have to ask them about their cross-shaft type before ordering. The EP-LF211 covers the lighter 20HP machines. Korea Ever-Power delivers to Chiang Mai in 6–7 days. Both models have been problem-free across 8 units sold in the past 6 months.

What is the difference between the EP-LF205 and the EP-RC31 at the same 30HP rating?

Both are 30HP gearboxes with similar ratio options. The EP-LF205 is optimised for disc mower input service: lighter (19kg vs 24.5kg), compact dimensions for tight mower deck installations, and the dual optic-axis/taper-spline output suited to mower cross-shaft coupling standards. The EP-RC31 is optimised for rotary cutter service: heavier and more robust housing for the higher shock loads of brush and cutter duty, four ratio options (including 1:1 and 1:2.3 which the EP-LF205 does not offer), and cone base aequilate spline output for rotary cutter blade carriers. For mower input drives, specify EP-LF205. For rotary cutter drives, specify EP-RC31.

On the EP-LF205, are both the optic axis and taper spline output simultaneously accessible?

Yes — both are present on the unit simultaneously, but only one connects to the cross-shaft in any given installation. The unused output shaft side is typically left with a protective cap or dust plug. The decision of which side to connect is made at installation based on your cross-shaft coupling type. There is no internal switching mechanism — both output shaft ends are always turning when the gearbox is in operation. Ensure the unused side is adequately protected from soil and moisture ingress with an appropriate cap or seal plug during operation.

Can I use the EP-LF211 (20HP) on a 25HP tractor?

The EP-LF211 is rated for 20HP continuous. A 25HP engine tractor typically delivers 21–23HP at the PTO under mowing load — 5–15% above the EP-LF211's continuous rating. For standard orchard floor mowing at low-to-moderate grass density, this 5–15% over-rating is manageable over multiple seasons. For heavier vegetation, sustained full-throttle mowing, or high-duty-cycle commercial operations on a 25HP tractor, the EP-LF211's continuous rating is borderline. If your 25HP tractor will be operating the disc mower at sustained full PTO load, consider the EP-LF205 (30HP) for the additional safety margin.

What gear oil and maintenance interval apply?

SAE 90 GL-4 gear oil — approximately 250–300ml (EP-LF205) and 200–250ml (EP-LF211). Both units ship without oil; fill before first operation. First oil change at 50 hours; subsequent changes every 200 hours or at the start of each mowing season. After each mowing session, check both shaft seals for oil weeping — the input shaft seal is particularly susceptible to accelerated wear if grass material accumulates at the shaft entry point. Clear any vegetation buildup from around the shaft exits after each use.

What warranty and shipping apply?

12-month warranty from dispatch against manufacturing defects — housing integrity, gear failure within rated HP, bearing failure not caused by oil neglect, and seal defects at delivery. Not covered: operating EP-LF205 above 30HP or EP-LF211 above 20HP PTO, oil neglect, dry running, or damage from connecting the wrong output interface to a coupling it is not designed for. Shipping: DHL or FedEx, 3–5 days to Korea and Japan, 5–7 days to SEA for 1–10 units. Sea freight for larger orders (10–18 days). Full export documentation including Certificate of Origin for RCEP and ASEAN preferential tariff applications on every shipment.