EP-RV010 Aluminum Agricultural Gearbox – 450RPM Compact PTO Drive
★ Only 4kg — The Aluminum Agricultural Gearbox That Fits Where Cast Iron Cannot
그만큼 EP-RV010 is Korea Ever-Power’s flagship aluminum series gearbox — just 4kg, four ratio options covering 1:1 through 1:3.3, and a high-pressure die-cast AlSi alloy housing that resists corrosion in wet, coastal, and high-humidity operating environments where cast iron demands protective coatings that inevitably chip and rust. The 1 3/8″ Z6 input runs at 450RPM — matching the lower-speed PTO outputs of compact utility tractors and garden machinery common in Korean and Japanese small-farm operations. Whether you are specifying a gearbox for a lightweight orchard sprayer, a compact seeder, a garden rotary mower, or a small snow-clearing implement, the EP-RV010 delivers the ratio flexibility and corrosion resistance of a premium aluminum unit at the competitive pricing of a manufacturer with 19 years of direct-export production history.
Lightweight by Design — Why the EP-RV010 Starts with the Housing Material
EP-RV010 · 4kg · Ratios 1:1–1:3.3 · AlSi die-cast housing
Every design decision in the EP-RV010 starts with the housing material. Cast iron — the material used across all other HC series agricultural gearboxes — has a density of approximately 7.2 g/cm³. Aluminum alloy (AlSi9Cu3, the grade used in high-pressure die-casting for agricultural applications) has a density of 2.7 g/cm³. At equivalent housing wall thickness and geometry, an aluminum housing weighs less than 40% of its cast-iron equivalent. The EP-RV010's 4kg total weight is not achieved by reducing wall section or compromising bearing span — it is the direct physical consequence of choosing a lighter material for an application where weight matters more than thermal mass.
Where does weight matter? Compact tractors in the 15–25HP class — common in Korean peri-urban farming, Japanese orchard operations, and Southeast Asian smallholder plots — mount implements directly on the 3-point hitch. Every kilogram added to a hitch-mounted implement shifts the tractor's centre of gravity rearward, increasing the steering effort on the front axle and, on sloped terrain, reducing stability. A 4kg gearbox versus a 24kg cast-iron equivalent in the same HP class represents a 20kg difference that is felt by the operator on every headland turn and every slope navigation. For implements used in tight-space environments — between fruit tree rows, on terraced paddy bunds, in greenhouse alleys — the physical compactness enabled by the aluminum housing matters as much as the weight saving.
The second advantage of aluminum is corrosion resistance. In the coastal regions of Korea's South Gyeongsang and Jeolla provinces, Japan's Setouchi and Pacific coastal farming areas, and the humid tropical climates of Vietnam, Thailand, and the Philippines, agricultural equipment is exposed to salt air, high humidity, and standing water contact that accelerates surface corrosion on unprotected cast iron. Aluminum naturally forms a dense oxide layer that acts as a self-healing corrosion barrier, eliminating the paint maintenance requirement that cast-iron units demand in these environments.
Replacement Reference: The EP-RV010 is engineered as a direct-specification replacement for comparable aluminum agricultural gearbox models from Comer Industries, Bondioli & Pavesi, and other manufacturers in the light-duty / aluminum housing class. Korea Ever-Power is not affiliated with or an authorised distributor of these brands. Model references are provided solely to help customers identify compatible specifications.
Technical Specifications — All Four Ratio Configurations
All parameters are factory-verified from the official EP-RV010 datasheet. Note the variation in rated power across the four configurations — from 15HP at 1:1 ratio to 3HP at 1:3.3. This is not arbitrary: at lower output speeds (higher ratios), the torque multiplied at the output shaft increases, which would overload the M2.5 gearing at 1:3.3 if the same 15HP input were applied. The power derating at higher ratios reflects the tooth-strength limit of the smaller module gear pair, not a limitation of the housing or bearings. The input speed of 450RPM — lower than the 540RPM used across all other HC series models — is matched to the compact tractor and garden machinery PTO speeds that represent the primary market for this unit.
| 매개변수 | Config 1 | Config 2 | Config 3 | Config 4 |
|---|---|---|---|---|
| 속도비 | 1 : 1 | 1 : 1.35 | 1 : 1.9 | 1 : 3.3 |
| Teeth Count | 16 / 16 | 17 / 23 | 10 / 19 | 10 / 33 |
| 기어 모듈 | 4.5 | 3.5 | 4.5 | 2.5 |
| 정격 전력 | 15 HP | 13 HP | 5 HP | 3 HP |
| 출력 RPM (at 450 input) | 450 | ≈ 333 | ≈ 237 | ≈ 136 |
| 정격 입력 속도 | 450 RPM — all configurations (compact tractor / garden machinery PTO) | |||
| 입력 샤프트 | 1 3/8″ Z6 spline (ISO 500) | |||
| 출력축 | Optic axis (plain round, Φ25) | |||
| 하우징 소재 | High-pressure die-cast aluminum alloy (AlSi) — corrosion-resistant | |||
| 정격 입력 전력 | 15 / 13 / 5 / 3 HP (per configuration — see note above) | |||
| 순중량 | 4 kg — all configurations | |||
Housing dimensions: 256 × 90 × 148mm (L×H×W) · Φ25 output shaft
The engineering drawing confirms the EP-RV010's physical footprint: 256mm overall length (148mm body + 54mm each side), 90mm height, and 148mm width. The dual Φ25 output shafts — one on each side — allow installation in either left-hand or right-hand output configurations without additional hardware. The 2-Φ8mm mounting holes spaced at 40mm centres on the top face provide a simple, flat-surface fastening interface that suits the thin plate frames and extrusion structures common in compact garden machinery and light implement frames.
The M2.5 gear set in Config 4 (1:3.3 ratio) has a pitch circle diameter of 25mm for the 10-tooth pinion — a compact gear set appropriate for the 3HP rated load at this ratio. The M4.5 gear sets in Configs 1 and 3 are larger, reflecting the higher HP ratings (15HP and 5HP respectively) at those ratios. This variable-module approach within the same housing is possible because the aluminum housing provides the dimensional flexibility to accommodate different gear OD combinations within the same bolt-hole pattern, as long as all configurations remain within the torque capacity of the housing wall and output shaft dimensions.
Four Ratios, Four Use Cases — Matching the EP-RV010 to Your Application
The EP-RV010's ratio range — from 1:1 (direct drive) to 1:3.3 (significant speed reduction) — covers a surprisingly wide band of light-duty agricultural implement requirements. Here is what each configuration delivers in practice:
One housing, four applications: All four EP-RV010 configurations share the same housing dimensions and bolt hole pattern. This means a machine builder can design a single implement frame for the EP-RV010 footprint and then source whichever ratio variant the end customer requires — without re-engineering the frame for each speed configuration. For OEM garden machinery and compact implement manufacturers in Korea and Japan, this single-platform flexibility simplifies both production and spare parts management across model variants.
Aluminum vs. Cast Iron — When to Choose Which
The EP-RV010 and the cast-iron HC series gearboxes serve different application segments. The comparison below is objective — aluminum is not universally superior, and cast iron is not obsolete. The correct choice depends on the application's requirements.
| Factor | EP-RV010 Aluminum | HC Cast-Iron Series |
|---|---|---|
| 무게 | 4 kg ✔ clear advantage | 14–37 kg (model dependent) |
| Power Range | 3–15 HP | 20–125 HP ✔ clear advantage |
| 내식성 | Excellent — natural oxide layer ✔ | Requires paint — chips in field use |
| Shock Absorption | Good — adequate for light-duty | Superior — GGG50 ductile iron ✔ |
| Thermal Mass | Lower — heats faster, cools faster | Higher — better for sustained duty ✔ |
| Coastal / Humid Climate | Preferred — no surface treatment needed ✔ | Paint maintenance required in salt air |
| Tight-Space Installation | Preferred — compact and light ✔ | Larger housing footprint per HP class |
| Choose This For | Compact machinery, light-duty drives, coastal climates, weight-sensitive applications | Full-power field machinery, heavy-duty cycle applications, sustained high-torque drives |
The EP-RV010 is optimised for applications where its advantages — low weight, corrosion resistance, compact size, multi-ratio flexibility — are the deciding factors. For applications above 15HP, or where sustained shock loads are expected from stone impact or ground engagement, a cast-iron HC series unit is the correct specification.
Material & Construction — What Makes This 4kg Gearbox Reliable
High-Pressure Die-Cast AlSi Housing
The housing is produced by high-pressure die casting using an AlSi alloy — the same process and material class used in automotive transmission housings. High-pressure die casting produces denser metal at the housing wall compared to gravity-cast aluminum, giving better dimensional stability and reduced porosity that would otherwise create leak paths for gear oil over time.
Hardened Steel Bevel Gears
Despite the aluminum housing, the bevel gear set is manufactured from hardened alloy steel — carburised and quench-hardened to HRC 58–62 on all tooth faces, identical to the specification used across the cast-iron HC series. The aluminum housing does not carry gear loads; the steel gears and their bearing seats do. This combination — light housing material, full-specification gear steel — is the engineering basis for the EP-RV010's weight saving without gear-life compromise.
Precision-Bored Bearing Seats
The bearing seats are CNC-machined to H7 tolerance in the aluminum housing after casting — the same tolerance standard used in cast-iron HC series units. Aluminum's lower elastic modulus means that without precision machining, bearing seat deflection under load would change the gear mesh contact pattern. The H7 tolerance and the bearing seat wall thickness are specified to keep mesh deflection within the designed contact pattern under all rated-load conditions.
Self-Healing Corrosion Barrier
Aluminum alloys exposed to air immediately form an aluminum oxide layer (Al₂O₃) approximately 4–10nm thick. This oxide layer is chemically inert to salt spray, organic acids in crop residue, and fertiliser-contaminated water — the primary corrosive agents in agricultural environments. Unlike paint, the oxide layer reforms within minutes if scratched, meaning the EP-RV010 requires no surface treatment programme to maintain corrosion protection in coastal or high-humidity climates.
Dual-Side Output Shaft
The EP-RV010 features a Φ25 optic axis output shaft accessible from both sides of the housing. This bilateral output capability allows the same gearbox to be installed in left-hand or right-hand drive configurations without modification — a practical benefit when fitting compact implements into tight-space environments where the drive shaft approach angle may differ between tractor models or installation orientations.
100% Factory Load Test
Every EP-RV010 unit is bench-tested at full rated load for the ordered ratio configuration before packing. For light-duty units, skipping this step is a tempting cost saving — Korea Ever-Power does not take that option. The test confirms gear mesh alignment in the aluminum housing under load (which behaves differently from cast iron), oil seal integrity, and bearing pre-load settings. Each unit that ships has demonstrated its performance, not just its dimensions.
Where the EP-RV010 Fits — Light-Duty Agricultural & Garden Applications
🌿 Compact Orchard & Vineyard Equipment — Korea & Japan
Korean apple and pear orchards in Chungbuk and Gyeongbuk, and Japanese grape and peach vineyards in Yamanashi and Nagano, operate compact multi-function implements between tight tree and vine rows — typically on walking tractors or compact 12–20HP two-wheel tractors. The EP-RV010 in the 1:1.35 or 1:1.9 configuration is the standard gearbox specification for these implements: compact floor sprayer drive systems, small PTO-driven tiller heads for under-row cultivation, and compact disc-mower heads for between-row floor management. At 4kg, it adds negligible weight to implements that must be hand-positioned for orchard work.
🏡 Garden Tractor Implements — Korea, Japan & Taiwan
The Korean and Japanese garden tractor market — kubota B series, Iseki TG, Yanmar EF series, and equivalent domestic brands — supports a wide range of PTO-driven garden implements: compact rotary mowers, snow throwers, aerators, and scarifiers. The EP-RV010 running at 450RPM input (the standard garden tractor PTO speed) with the 1:1 or 1:1.35 ratio is the specification for implements that require the full garden PTO speed in a right-angle drive configuration. The low weight ensures the implement mounting does not adversely affect the tractor's balance on the slopes common in Japanese and Korean residential garden and rural property applications.
❄️ Compact Snow-Clearing Equipment — Korea's Northern Regions & Japan
Snow-clearing equipment for Korean mountain farming communities in Gangwon Province and Japan's heavy-snow regions (Niigata, Akita, Aomori) uses compact walk-behind or garden-tractor-mounted snow blowers and rotary snow sweepers. In this application, corrosion resistance is as important as weight: snow-clearing implements are stored in cold, wet, often salt-exposed environments between seasons, and cast-iron gearboxes without diligent paint maintenance show surface rust that can reach bearing seal gaps within 2–3 seasons. The EP-RV010's aluminum housing requires no off-season corrosion treatment, simplifying seasonal storage for the small-farm operators who use this equipment infrequently but cannot afford to find it failed at the start of the next snow season.
🌱 Seedbed Preparation & Planting Implements — Vietnam & Thailand
In Vietnam's flower-growing highland districts (Da Lat, Sa Pa) and Thailand's vegetable-producing highland areas (Chiang Rai, Chiang Mai), compact garden tractors and walk-behind two-wheelers are the standard cultivation machinery on small terraced plots. The EP-RV010 at 1:1.9 (compact rotary hoe drive) and 1:3.3 (slow-speed drum seeder drive) covers the two primary implement drive requirements in these cropping systems. The aluminum housing's corrosion resistance is valued in the high-humidity, high-rainfall conditions typical of these highland growing environments, where condensation and daily rain contact would require frequent paint maintenance on cast-iron alternatives.
🏭 OEM Garden Machinery Manufacturing — Korea & Japan
Several Korean and Japanese garden machinery OEM manufacturers — building compact tillers, scarifiers, and multi-function garden implements for domestic sale and export — specify the EP-RV010 as their standard gearbox across product lines. The single housing footprint across four ratio options allows OEM production lines to use one mounting template for all ratio variants, reducing tooling cost and assembly complexity. Korea Ever-Power supplies OEM customers with volume pricing and dedicated stock allocation; contact our sales team for OEM programme details.
EP-RV010 vs. EP-RV022 — Choosing Within the Aluminum Series
Korea Ever-Power supplies two aluminum agricultural gearboxes. The EP-RV010 is the multi-ratio flagship at 4kg; the EP-RV022(X) is a more compact three-ratio unit at 7kg targeting a slightly different footprint and ratio range. Here is how to choose between them:
| Factor | EP-RV010 | EP-RV022 (X) |
|---|---|---|
| 무게 | 4 kg ✔ lighter | 7 kg |
| 비율 옵션 | 4 ratios (1:1 to 1:3.3) ✔ more choice | 3 ratios (1:1 / 1:1.48 / 1:2.91) |
| Max Rated Power | 15 HP | 15 HP |
| 입력 속도 | 450 RPM | 540 RPM |
| Housing Footprint | 256 × 90 × 148 mm | Smaller (see RV022 page) |
| Choose This When | Maximum ratio flexibility needed, 450RPM input, widest application range | More compact footprint needed, 540RPM input, simpler ratio requirement |
The most common reason to choose the EP-RV022 over the EP-RV010 is the input speed: if your compact tractor or garden machinery PTO runs at 540RPM (rather than the 450RPM the RV010 is rated for), the EP-RV022 is the correct unit. Contact Korea Ever-Power with your equipment's PTO speed specification if unsure.
Why Compact Implement Builders Choose Korea Ever-Power
CNC machining for precision bearing seats — aluminum and cast-iron series
Korea Ever-Power Agricultural Machinery Co., Ltd. manufactures both the HC cast-iron series and the EP-RV aluminum series at the same 3,800 m² production facility, using the same CNC gear hobbing and precision bearing-seat machining equipment across both material classes. This shared production infrastructure ensures that the aluminum series receives the same dimensional precision and quality control rigour as the higher-profile cast-iron units — not a lower standard for a lighter product.
For garden machinery OEM manufacturers and compact implement builders in South Korea and Japan, Korea Ever-Power's Asia-Pacific supply position means 3–7 business day delivery for stocked configurations — compared to 4–8 weeks for equivalent European aluminum agricultural gearboxes. The complete export documentation prepared for each shipment supports smooth customs clearance under RCEP preferential tariff provisions applicable to Korean and Japanese agricultural machinery imports from our manufacturing region.
Related Products & Drive System Components
What Customers Say About the EP-RV010
Frequently Asked Questions — EP-RV010
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