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EPNMRV040 Aluminium Worm Gearbox — Overview
The EPNMRV040 aluminium worm gearbox is the workhorse of light-duty outdoor applications, trusted by Australian agricultural equipment manufacturers for its corrosion-resistant housing and robust 2.3 kg build. Rated for input powers up to 0.55 kW with output torque reaching 53 Nm, it handles the varied load demands of irrigation gate operators, seed drill drives, and small conveyor belt systems without overheating. The EPNMRV040 is the smallest EPNMRV model to offer four output flange variants (FA, FB, FC, FD) and accepts NEMA 56C flanges — features that make it highly versatile for Australian machinery exporters building simultaneously for the North American and Asia-Pacific markets.
EPNMRV040 Technical Specifications
General Specifications
| Parameter | Value |
|---|---|
| Model | EPNMRV040 |
| Input Power (P1) | 0.09 – 0.55 kW |
| Max Output Torque (M2) | 53 Nm |
| Max Radial Force (Fr2) | 3118 N |
| Available Gear Ratios (i) | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Output Shaft Dia. | 18 mm / 0.750 in |
| Input Shaft Dia. | 12.7 mm / 0.500 in |
| NEMA Input Flange | NEMA 56C |
| IEC Input Flange | IEC 63/71 |
| Unit Weight | 2.3 kg |
| Housing Material | Die-cast ADC12 aluminium alloy |
| Worm Wheel Material | High-tensile phosphor bronze |
| Worm Shaft Material | 20CrMnTi alloy steel — case-hardened & ground |
| Surface Finish | Two-coat baked epoxy-polyester |
| Standard Mounting | B3 foot / VS IEC flange / hollow bore |
| Lubrication | ISO VG 220 synthetic gear oil |
| Input Speed (n1) | 1,400 rpm (50 Hz 4-pole reference) |
Inch-Series Dimension Reference
| Dimension | Inch Value | Metric Equivalent |
|---|---|---|
| A – Body width | 3.07 in | 78 mm |
| B – Body height | 2.81 in | 71 mm |
| J – Overall length | 3.98 in | 101 mm |
| Output shaft dia. (solid) | 0.750 in | 19 mm |
| Output shaft dia. (hollow) | 0.750 in (H8) | 19 mm |
| Input shaft dia. | 0.500 in | 12.7 mm |
| NEMA flange | 56C | IEC 63/71 |
| Weight | – | 2.3 kg |
Performance Data — EPNMRV040 (n1 = 1,400 rpm)
| P1 (kW) | Ratio (i) | n2 (rpm) | M2 (Nm) | f.s. | Fr2 (N) |
|---|---|---|---|---|---|
| 0.09 | 5 | 280 | 2.7 | 6.7 | 1149 |
| 0.09 | 10 | 140 | 5.0 | 4.3 | 1447 |
| 0.09 | 15 | 93.3 | 7.1 | 3.0 | 1657 |
| 0.09 | 20 | 70 | 9.0 | 2.0 | 1824 |
| 0.25 | 10 | 140 | 14 | 2.8 | 1447 |
| 0.25 | 15 | 93.3 | 21 | 1.9 | 1657 |
| 0.25 | 20 | 70 | 27 | 1.5 | 1824 |
| 0.25 | 30 | 46.7 | 36 | 1.3 | 2087 |
| 0.25 | 40 | 35 | 44 | 0.9 | 2298 |
| 0.37 | 10 | 140 | 21 | 1.9 | 1447 |
| 0.37 | 15 | 93.3 | 31 | 1.3 | 1657 |
| 0.37 | 20 | 70 | 39 | 1.0 | 1824 |
| 0.37 | 30 | 46.7 | 53 | 0.8 | 2087 |
| 0.55 | 5 | 280 | 16.7 | 2.0 | 1149 |
| 0.55 | 10 | 140 | 32 | 1.3 | 1447 |
| 0.55 | 15 | 93.3 | 46 | 0.9 | 1657 |
Key Features & Benefits — EPNMRV040
Field-Hardened for Australian Agriculture
Two-coat baked epoxy finish resists UV degradation, fertiliser spray, and seasonal moisture cycling. Field-validated on Australian grain farms in 45 °C summer heat and sub-zero winter mornings without seal degradation or paint flaking.
Four Output Flange Options
FA, FB, FC, and FD output flanges give machine designers flexibility to connect directly to conveyor sprockets, rotary actuator hubs, and auger shafts without custom adaptors — one frame covers a broad matrix of drive requirements.
53 Nm from Only 0.55 kW Input
At 30:1 ratio, the EPNMRV040 converts 0.37 kW into 53 Nm — enough for irrigation gate drives, auger chain drives, and small hoist mechanisms in remote locations where power supply is limited to a single-phase 10A circuit.
NEMA 56C for Export Machine Builds
Acceptance of NEMA 56C flanges (0.625 in bore) makes the EPNMRV040 compatible with the standard North American motor family, allowing Australian machine builders to export without redesigning the drive section for different motor mounting standards.
️
3,118 N Radial Load Capacity
The reinforced output shaft bearing arrangement supports up to 3,118 N radial force — handling the chain and belt pull loads common in agricultural conveyor and auger drive applications without premature bearing failure between seasonal servicing windows.
Application Scenarios — Where the EPNMRV040 Excels
Agricultural Machinery & Irrigation
Irrigation gate actuators, fertiliser spreader drives, seed drill metering units, and auger chain drives across Australian broad-acre farms use the EPNMRV040 for its 53 Nm torque and all-weather sealed housing. The unit withstands dust, crop chaff, and spray irrigation without service between planting seasons. Keyword: corrosion-resistant worm gearbox for agricultural machinery Australia
Industrial Conveyor Belt Systems
The EPNMRV040’s 3,118 N radial load capacity and 53 Nm torque make it standard for short-run industrial conveyors in logistics warehouses, manufacturing plant floor lines, and e-commerce fulfilment centres. Chain sprocket drives bolt directly to FA/FB output flanges. Keyword: worm gear reducer for industrial conveyor belt systems
️ Logistics & Sortation Systems
Parcel sortation conveyors, tilt-tray drives, and powered roller lanes in distribution centres use the EPNMRV040 for its balance of compact size and meaningful torque. The NEMA 56C flange pairs with energy-efficient premium-efficiency motors increasingly mandated by Australian facility managers. Keyword: aluminium worm reducer for logistics sortation automation
⚙️ Light Industrial Manufacturing
Rotary indexing tables, press feed drives, and roll-former sheet-feed units in light manufacturing plants select the EPNMRV040 for its four flange options, 12 gear ratios, and competitive price. The finned housing sustains duty cycles up to 20 hours per day. Keyword: compact worm gearbox for light industrial manufacturing equipment
Selection Guide & Comparison — EPNMRV040
How to Select the Right EPNMRV Model
Select the EPNMRV040 when output torque is 20–53 Nm and input power is 0.09–0.55 kW. Ratios 20:1–100:1 suit slow agricultural and conveyor drives; 5:1–15:1 suit faster roller and indexing applications. Exceed 53 Nm? Step up to EPNMRV050.
Mounting Positions & Lubrication Notes
| Montagem | Code | Oil Fill Note |
|---|---|---|
| Horizontal — foot down | B3 | Standard fill volume (reference) |
| Horizontal — foot right | B6 | Same as B3 |
| Horizontal — foot left | B7 | Same as B3 |
| Horizontal — foot up | B8 | Same as B3 |
| Vertical — output shaft down | V5 | Increase fill ~20% above B3 reference |
| Vertical — output shaft up | V6 | Increase fill ~25% above B3 reference |
EPNMRV040 vs Traditional Cast-Iron Worm Reducer
| Attribute | EPNMRV040 (Aluminium) | Traditional Cast-Iron | Advantage |
|---|---|---|---|
| Weight | 2.3 kg | ~7 kg typical | 67% lighter — reduces equipment total mass |
| Output flanges | FA, FB, FC, FD — 4 types | FA only typical | More drive connection flexibility |
| NEMA compatibility | 56C standard | Adaptor plate required | Direct fit for export market motors |
| Radial load capacity | 3,118 N | 2,500 N typical | Better for chain and belt pull loads |
| Ratio range | 5:1 – 100:1 | 5:1 – 60:1 typical | Wider range without compound stage |
Frequently Asked Questions — EPNMRV040
What output shaft diameter does the EPNMRV040 provide?
The standard solid output shaft is 18 mm metric (0.750 in inch series) with a 6 mm × 32 mm keyway. The hollow bore variant provides a 19 mm H8 bore for direct shaft-mounting. The inch-series hollow bore is 0.750 in. Both accept standard market couplings and conveyor sprocket hubs.
Which output flange options are available?
Four configurations: FA (standard bolt-circle), FB (extended bolt-circle), FC (large-diameter face), and FD (intermediate face). These cover standard Australian, European, and North American conveyor sprocket and rotary actuator flange dimensions. Consult the dimensional drawing for PCD and hole specifications.
Is the EPNMRV040 suitable for outdoor irrigation gate drives?
Yes. The baked-epoxy outer coating, multi-lip shaft seals, and sealed housing joint suit permanent outdoor installation on irrigation gate actuators. For installations subject to direct water immersion, specify the IP65 sealed variant and use ISO VG 220 synthetic oil with an annual change schedule.
What NEMA motor frames are compatible?
The EPNMRV040 inch series accepts NEMA 56C flanges (0.625 in bore), covering 1/4–1/2 HP North American motors. The metric EPNMRV040 accepts IEC 63 and 71 B14 flanges — the two most common frame sizes for motors in the 0.09–0.55 kW power range across Australian and Asian markets.
Can I use a hollow output bore on the EPNMRV040?
Yes. The hollow bore (19 mm H8) eliminates the need for a coupling and reduces overall drive-train length. A torque arm is supplied with the hollow-bore variant to react output torque against the machine frame. Commonly used on conveyor head-drum direct-drive and agricultural auger drives.
What is the maximum radial load?
At 14 rpm (100:1 ratio) the EPNMRV040 supports up to 3,118 N radial force at the shaft end. At higher speeds the radial limit decreases. Refer to the Fr2 column in the performance table for the limit at your specific operating speed. Exceeding this value accelerates bearing wear.
How does the EPNMRV040 perform in high-ambient-temperature environments?
Natural convection cooling handles ambient temperatures up to 40 °C. For the 40–50 °C range common in Queensland and NT summer conditions, reduce input power to 80% of rated or add a small forced-air fan directed at the housing. Use ISO VG 220 fully synthetic oil for improved thermal stability.
Customer Reviews — EPNMRV040
★★★★★
“Installed EPNMRV040 units on our 24 V DC irrigation gate actuators across multiple Riverina properties. Two full seasons in dusty, chemically rich irrigation environments and every unit is still performing. The 53 Nm torque handles even heavily silted gate slides without stalling.”
Irrigation gate actuator drive, Riverina NSW — 36 units
Craig M.
Mallee Irrigation Equipment Pty Ltd — Australia
★★★★★
“Excellent cost-to-performance ratio for our grain auger drive units. The EPNMRV040 at 30:1 delivers consistent torque even during start-up with a full auger flight, and the epoxy coating shows good resistance to the lime-rich soils we work with in Mato Grosso.”
Grain auger metering drive on pneumatic seeder, Mato Grosso
Carlos M.
Agrimaq Equipamentos Ltda — Brazil
★★★★☆
“Good unit overall for our grain handling conveyor drives. The NEMA 56C flange works directly with our preferred North American motor brand without adaptors. Delivery was faster than quoted — appreciated during a tight seasonal installation schedule.”
Grain handling belt-conveyor drive, Saskatchewan
Kevin T.
Prairie Conveyor Systems Inc. — Canada
Related Products & Compatible Accessories
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Compatible IEC B14 / NEMA Motors
Standard IEC B14 flange motors (IEC 63/71) and NEMA 56C frame motors pair directly with the EPNMRV040 VS motor flange. Single-phase and three-phase AC motors from 0.06 kW to 9.2 kW are available from Ever-power as matched gearmotor assemblies.
Output Flanges (FA / FB / FC / FD)
Multiple output flange configurations for the EPNMRV040 allow direct face-mounting to conveyor roller frames, agitator shaft hubs, and indexing disc assemblies without intermediate couplings.
Hollow Output Bore & Torque Arms
Hollow bore variant of the EPNMRV040 eliminates output shaft couplings. Supplied with a torque arm bracket that reacts output torque against the machine frame — ideal for conveyor head-drum and auger shaft-mount installations.
Double-Stage EPNMRV Combinations
The EPNMRV040 can be combined with a larger output stage (e.g., EPNMRV040/130 or EPNMRV025/040) to achieve ratios up to 5,000:1 for ultra-slow precision drives. Contact Ever-power for double-stage selection data.
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Torque Limiter & Backstop Options
Torque limiter couplings and mechanical backstops are available as accessories. Backstops prevent reverse rotation on inclined conveyors; torque limiters protect the gearbox from shock overloads in crusher infeed and auger drive applications.
Field-Proven in Australian Agriculture & Industry
The EPNMRV040 is trusted by agricultural equipment manufacturers and conveyor OEMs across Australia and internationally. Contact Ever-power to discuss your application, request a datasheet, or obtain a quotation.
