描述
EP-NMRV025 Compact Aluminium Worm Reducer – Product Overview
The EP-NMRV025 is the smallest unit in the NMRV aluminium worm reducer family – engineered for applications where size and weight constraints dominate the drive selection. At just 0.7 kg and a 25 mm centre distance, this micro-format worm reducer delivers up to 15 Nm output torque across nine standard ratios from 5:1 to 60:1. Unlike the larger NMRV030 which targets general-purpose conveyor and packaging duties with IEC motor flanges, the NMRV025 is purpose-designed for precision mechanism drives: laboratory sample handling, automated dispensing valves, small-format rotary indexing, and instrumentation positioning systems. The die-cast aluminium alloy housing provides corrosion resistance and thermal efficiency at a fraction of the weight of cast iron alternatives – a critical advantage in portable, wall-mounted, and space-constrained equipment. Available as a direct pre-stage for larger NMRV030 and NMRV040 units in double-stage configurations reaching ratios up to 5000:1.
EP-NMRV025 Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NMRV025 |
| Centre Distance | 25 mm |
| Weight (without motor) | 0.7 kg |
| Output Shaft | Ø9 mm j6 tolerance |
| Keyway b1 | 3 mm |
| Keyway depth t1 | 10.2 mm |
| Ratio Range | 5, 7.5, 10, 15, 20, 30, 40, 50, 60 |
| Input Power | 0.06 – 0.09 kW |
| Housing Material | Die-cast aluminium alloy, painted finish |
| Worm Wheel | Tin-bronze alloy |
| Worm Shaft | Case-hardened steel, ground finish |
| Lubrication | Synthetic oil, lifetime fill |
| Max Ambient Temp | -10°C to +40°C |
| IP Rating | IP54 |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Double-Stage Options | NMRV025/030 (to 3000:1), NMRV025/040 (to 5000:1) |
Performance Data at P1 = 0.06 kW (n1 = 1400 rpm)
| Ratio | Output Speed (rpm) | Torque (Nm) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 5 | 280 | 1.8 | 6.2 | 439 |
| 7.5 | 186.7 | 2.6 | 4.2 | 503 |
| 10 | 140 | 3.4 | 3.5 | 553 |
| 15 | 93.3 | 4.9 | 2.5 | 633 |
| 20 | 70 | 6.1 | 2.0 | 697 |
| 30 | 46.7 | 8.2 | 1.6 | 798 |
| 40 | 35 | 10 | 1.3 | 878 |
| 50 | 28 | 12 | 0.9 | 946 |
| 60 | 23.3 | 14 | 0.7 | 1006 |
Performance Data at P1 = 0.09 kW (n1 = 1400 rpm)
| Ratio | Output Speed (rpm) | Torque (Nm) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 5 | 280 | 2.7 | 4.1 | 439 |
| 7.5 | 186.7 | 3.9 | 2.8 | 503 |
| 10 | 140 | 5.1 | 2.4 | 553 |
| 15 | 93.3 | 7.3 | 1.6 | 633 |
| 20 | 70 | 9.2 | 1.3 | 697 |
| 30 | 46.7 | 12 | 1.1 | 798 |
| 40 | 35 | 15 | 0.9 | 878 |
Double-Stage Combinations with NMRV025 as Pre-Stage
| Combination | Ratio Range | Max Output Torque |
|---|---|---|
| NMRV025/030 | 100 – 3000:1 | Up to 405 Nm |
| NMRV025/040 | 300 – 5000:1 | Up to 356 Nm |
✓ Core Features and Benefits
The smallest unit in the NMRV range by a significant margin. Fits inside enclosures and on mechanisms where no other worm reducer can – laboratory carousels, micro-conveyors, and wall-mount actuators.
Die-cast aluminium alloy with factory-applied protective coating resists humidity, mild chemical splash, and salt spray – outperforming uncoated cast iron in coastal and tropical environments across Australia.
The precision-ground worm shaft and tin-bronze worm wheel mesh produces noise levels below 65 dB(A) at rated load – suitable for laboratory, medical, and office-adjacent equipment installations.
Ships pre-filled with synthetic lubricant rated for the full service life under normal conditions. No scheduled oil changes – reducing total cost of ownership for distributed installations.
⚙ Industry Applications
Ultra-compact worm reducer for sample carousels, micro-pumps, and analytical instrument positioning. The 0.7 kg weight minimises vibration transfer to sensitive measurement equipment.
Precision speed reduction for micro-dispensing valves and small actuator mechanisms. Ratios to 60:1 deliver the slow, controlled motion dispensing applications require.
Lightweight aluminium worm reducer for ventilation actuators, irrigation valves, and seed dispensing mechanisms. Corrosion-resistant housing handles humid greenhouse and outdoor field environments.
Compact drives for tabletop conveyors, sorting mechanisms, and small-format handling equipment. The NMRV025 fits where larger reducers cannot.
⚙ Selection Guide and Mounting Positions
Select the NMRV025 when your application requires output torque below 15 Nm and input power below 0.09 kW. For higher torques up to 24 Nm, step up to the NMRV030. For torques above 30 Nm with IEC motor flange input, the NMRV040 or larger is required. The NMRV025 does not accept an IEC flange motor directly – it uses a solid input shaft requiring a coupling to the motor.
| Position | Code | Oil Level Note |
|---|---|---|
| Horizontal foot-mount | B3 | Standard fill to sight glass |
| Horizontal inverted | B8 | Increased fill |
| Vertical output up | V5 | Reduced fill |
| Vertical output down | V6 | Maximum fill |
| Wall-mount left/right | B6/B7 | Per mounting chart |
Output Shaft Detail
| Parameter | Value |
|---|---|
| Output shaft diameter | Ø9 mm j6 |
| Keyway width b1 | 3 mm |
| Keyway depth t1 | 10.2 mm |
⚖ Aluminium Worm Reducer vs Traditional Cast Iron
Australian buyers increasingly specify aluminium worm reducers for their weight savings, corrosion resistance, and competitive pricing. Here is how the NMRV025 compares to a cast iron equivalent:
| Feature | Aluminium NMRV/NRV | Cast Iron Reducer |
|---|---|---|
| Weight | 30-50% lighter | Heavier baseline |
| Corrosion Resistance | Excellent – aluminium alloy | Poor – requires coating |
| Heat Dissipation | Superior – aluminium conductivity | Moderate |
| Unit Cost | Lower | Higher |
| Noise | Low | Moderate |
| IEC Motor Fit | Direct B5/B14 flange | Often needs adaptor |
❓ Frequently Asked Questions
▶ What is the maximum output torque of the EP-NMRV025?
▶ Can the EP-NMRV025 be used as a pre-stage for larger NMRV reducers?
▶ What lubrication does the EP-NMRV025 require?
▶ Is the EP-NMRV025 suitable for food processing environments?
▶ What mounting positions does the EP-NMRV025 support?
★ Customer Reviews
“Installed 24 units on our laboratory sample carousel. The 0.7 kg weight was critical – our previous drives were 2.8 kg each and caused excessive vibration. Zero issues after 14 months of 16-hour daily operation.”
James T. – Precision Instruments Pty Ltd (Australia)
“Using NMRV025 at 60:1 ratio on our micro-dispensing valve actuators. Precise positioning, very low backlash for a worm reducer at this price point. The compact size fits inside our OEM enclosure without modification.”
Kenji M. – Yamato Automation Co. (Japan)
“Excellent micro worm reducer for our automated greenhouse ventilation actuators. The aluminium housing handles the humid environment well – no corrosion after two growing seasons outdoors. Lightweight enough for wall-mount.”
Erik S. – Nordic Mechatronics AB (Sweden)
⚙ Related Products and Accessories
⚙ Compatible Motors: Solid input shaft – connect any motor via jaw, bellows, or beam coupling. ⚖ Torque Arms: K1=70mm for shaft-mount installations. ⚙ Output Shafts: Single and double solid output shaft options. ⚖ Dust Covers: Input shaft protection for dusty environments.
Get Your EP-NMRV025 Quote Today
Contact Ever Power for pricing and OEM quantities. Email: [email protected]
