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EP-NMRV030 Worm Gearbox — Versatile Torque for Conveyor & Packaging Drives
The EP-NMRV030 aluminum worm gearbox is the workhorse of Ever Power’s compact reducer range — small enough for space-constrained frames yet powerful enough to drive light conveyor belts, filling machines, and agricultural feed systems reliably. Weighing only 1.2 kg, it offers ratios extending to 100:1 and output torques up to 60 Nm. Industrial buyers in Australia, the UK, and continental Europe consistently choose the NMRV030 as a drop-in replacement for obsolete geared motors. The standardised NEMA 48C input flange (inch) and IEC B14/B5 compatibility (metric) mean virtually any locally sourced motor can be paired without custom adaptors.
Compared to the NMRV025, the NMRV030 adds a 100:1 ratio option and a significantly higher radial load capacity of up to 1,620 N, making it suitable for more demanding conveyor end-drive and agricultural auger applications where back-drive prevention at rest is also required.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NMRV030 |
| Weight (without motor) | 1.2 kg |
| Gear Ratios | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Max Input Power (P1) | Up to 0.18 kW |
| Max Output Torque (M2) | Up to 60 Nm (at 100:1) |
| Output Speed Range | 14 – 280 rpm (at 1400 rpm input) |
| Max Radial Load Fr2 | Up to 1,620 N |
| Housing Material | Die-cast aluminum alloy |
| Worm Wheel Material | Phosphor bronze |
| Output Shaft Dia. (Metric) | 14 mm H8 |
| Output Shaft Dia. (Inch) | 0.750 in (-0.0005) |
| Input Shaft Dia. (Metric) | 9 j6 mm |
| Input Bore Dia. (Inch) | 0.500 in |
| NEMA Input Flange | 48C |
| Output Flange Options | FA (030 frame) |
| Mounting Options | Foot (NMRV), Shaft (NRV), Flange |
| Protection | IP54 standard |
| Operating Temperature | -10 to +40 deg C |
Key Dimensional Data — Metric & Inch
| Dimension | Metric (mm) | Inch (in) |
|---|---|---|
| Centre Height (A) | 63 | 2.48 |
| Centre Distance (I) | 30 | — |
| Output Shaft dia. | 14 mm H8 | 0.750 in |
| Input Shaft dia. | 9 j6 mm | 0.375 in |
| Keyway (output) | 5 x 16 mm | 0.1875 x 1.5 in |
| Output Shaft Length | 30 mm | — |
Core Features & Engineering Advantages
⚙ Extended Ratio Range to 100:1
Single-stage 100:1 delivers output speeds as low as 14 rpm from a 1400 rpm motor — eliminating double-stage reducers in slow-drive applications.
⚒ Dual Metric & Inch Shaft Standards
14 mm metric (H8) and 0.750 in inch output shafts available in the same housing. Australian OEMs can source one part number and adapt to both local and imported motor standards.
🔥 Efficient Thermal Management
Finned aluminum housing dissipates heat 3x faster than cast iron, keeping oil temperature within limits during 24/7 production runs — critical for bottling plants and mining support equipment.
💧 Zero-Leak Oil Seal System
Double-lip NBR seals rated for -25 to +100 deg C plus gasket-sealed housing. Oil integrity maintained across any mounting angle — particularly valuable for vertical-shaft conveyor end-drives.
📈 Modular Output Configuration
FA output flange and optional hollow bore allow direct interface with driven shafts, sprockets, or custom flanges — reducing component count in your gearbox-to-machine interface.
Application Scenarios & Industry Suitability
🏟
Conveyor Systems
Light belt conveyors in warehousing, postal sorting and retail — reliable low-speed torque for horizontal and inclined belts.
🏛
Water Treatment
Slow-speed sludge scrapers and dosing pumps — sealed aluminum housing withstands humid and chemical environments in Australian water utilities.
🌾
Agricultural Feed Systems
Auger drives, poultry feed conveyors, seed metering — self-locking at high ratios prevents back-drive when the motor is off.
📦
Packaging & Labelling
Roll-to-roll web drives, carton erectors, label applicators — consistent low-backlash output for accurate registration and repeatable cycle times.
Selection Guide & Shaft Configuration
- Ratio 5–10: Agitators and fans — 140–280 rpm output.
- Ratio 15–40: Conveyor and packaging lines — 35–93 rpm.
- Ratio 50–100: Valve actuators, metering, positioning — 14–28 rpm.
Shaft & Flange Output Details
Standard 14 mm H8 solid shaft with 5×16 mm keyway (metric) or 0.750 in shaft with 3/16 x 1.5 in keyway (inch). FA output flange with 50 mm pilot diameter available. Hollow bore accepts 18 mm through-shaft for direct drum coupling.
Aluminum vs. Cast Iron Worm Gearbox Comparison
| Feature | EP-NMRV030 (Aluminum) | Cast Iron Equivalent |
|---|---|---|
| Weight | 1.2 kg ✅ | 4–6 kg |
| Max Single-Stage Ratio | 100:1 ✅ | Typically 60:1 |
| Corrosion Resistance | High ✅ | Low (rusts) |
| Thermal Dissipation | Excellent ✅ | Poor |
| IEC/NEMA Standard | Yes ✅ | Often non-standard |
| Mounting Flexibility | Any orientation ✅ | Limited |
Frequently Asked Questions
❓ What is the maximum output torque of the EP-NMRV030?
Up to 60 Nm at 100:1 ratio with 0.18 kW input. Always cross-reference the performance table for your specific duty cycle.
❓ Is the NMRV030 self-locking at high reduction ratios?
Yes — self-locking above approximately 40:1. Useful for valve actuators and vertical drives; should not serve as the sole safety mechanism.
❓ Can the EP-NMRV030 be connected to a servo motor?
Yes, with IEC B14 adaptor plate. Input accepts 9 j6 bore adaptors; backlash typically under 1 degree for moderate-precision positioning.
❓ What flange outputs are available for the NMRV030?
FA output flange (030 frame), 50 mm pilot diameter, M6 bolt pattern for direct bolted attachment to driven machinery.
❓ How often does the NMRV030 need oil changes?
Synthetic ISO VG 220 every 5,000 hours or 2 years. Reduce to 2,000 hours in high-temperature or frequent start-stop applications.
Customer Reviews
★★★★★
“Running twelve NMRV030 units on our postal sorting conveyor in Sydney for over three years. Not a single failure. The 100:1 ratio means our belt runs at exactly the right speed without external reduction.”
Andrew Tran 🇦🇺 — Maintenance Manager, Logistics Co., Australia
★★★★★
“Replaced cast iron reducers on our bottling line with EP-NMRV030. Weight saving made installation faster and corrosion resistance is superior in our washdown environment.”
Sophie Laurent 🇫🇷 — Production Engineer, Boissons SAS, France
★★★★½
“Used for poultry feeder auger drives. Self-locking at 60:1 is invaluable — no brake needed. Good value for the quality delivered.”
Ravi Sharma 🇮🇳 — Plant Engineer, Poultry Processing Ltd., India
Compatible Accessories & Related Products
🔌
IEC B5/B14 Motor Flanges
For IEC 63–80 frame motors — accepts single-phase, three-phase, and VFD-compatible inverter-duty motors.
🔨
Torque Arm (NRV030)
K1=85 mm steel torque arm for shaft-mount NRV030 — prevents housing rotation on conveyor drum drives without rigid base mounting.
🔃
FA Output Flange
Precision output flange for direct bolted coupling — eliminates shaft-to-shaft misalignment in close-coupled drives.
🔒
Protective Input Cover
Polypropylene cover for the input side — recommended for outdoor and food-processing installations.
Get a Quote for the EP-NMRV030 Today
Single units or production batches — competitive pricing and technical support for Australian and global customers.
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About Ever Power
✉ [email protected] | OEM & distributor partnerships welcome
