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EP-NMRV090 Heavy-Duty Aluminium Worm Reducer – Product Overview
The EP-NMRV090 delivers genuine heavy-duty capability in an aluminium housing – up to 479 Nm output torque from input powers up to 4 kW. At 13 kg with 90 mm centre distance, it remains 40% lighter than comparable cast iron units while handling industrial conveyor head drives, large agitator mechanisms, and renewable energy tracking systems. The Ø35 mm output shaft with optional Ø38 mm matches heavy-duty coupling and sprocket standards used across Australian industrial applications. IEC motor frames from 56 to 180 connect via B5 or B14 flange – the widest motor range in the mid-NMRV series. Four output flanges FA, FB, FC, FD and compatibility with PC080 helical pre-stages provide maximum configuration flexibility for demanding continuous-duty applications.
EP-NMRV090 Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NMRV090 |
| Centre Distance | 90 mm |
| Weight (without motor) | 13 kg |
| Output Shaft | Ø35 mm h6 (optional Ø38 mm) |
| Output Keyway | b=10mm, t=38.3mm (41.3 for 38mm) |
| Ratio Range | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Giriş Gücü | 0.37 – 4 kW |
| Housing | Die-cast aluminium alloy |
| IEC Motor Frames | 56/63/71/80/90/100/112/132/160/180 B5 and B14 |
| IP Rating | IP54 |
| Output Flanges | FA, FB, FC, FD |
| Montaj | B3, B6, B7, B8, V5, V6 |
| Helical Pre-Stages | PC071, PC080 |
Performance Data at P1 = 1.5 kW (n1 = 1400 rpm)
| Oran | n2 (rpm) | Torque (Nm) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 20 | 70 | 172 | 2.1 | 4273 |
| 25 | 56 | 210 | 1.6 | 4603 |
| 30 | 46.7 | 239 | 1.7 | 4891 |
| 40 | 35 | 307 | 1.2 | 5383 |
| 50 | 28 | 368 | 0.9 | 5799 |
| 60 | 23.3 | 424 | 0.8 | 6163 |
Performance Data at P1 = 0.75 kW (n1 = 1400 rpm)
| Oran | n2 (rpm) | Torque (Nm) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 50 | 28 | 184 | 1.8 | 5799 |
| 60 | 23.3 | 212 | 1.5 | 6163 |
| 80 | 17.5 | 258 | 1.1 | 6783 |
| 100 | 14 | 302 | 0.9 | 7306 |
Helical Pre-Stage and Double-Stage Combinations
| Combination | Ratio Range | Max Torque |
|---|---|---|
| PC080+NMRV090 | 90 – 240:1 | 477 Nm |
| PC071+NMRV090 | 176 – 294:1 | 363 Nm |
| NMRV040/090 | 3000 – 5000:1 | 611 Nm |
✓ Core Features and Benefits
Handles industrial conveyor heads, large agitators, and energy system drives at torques that previously required cast iron housings. The NMRV090 proves aluminium can compete at heavy-duty levels.
Accepts motors from 0.37 kW to 4 kW directly via B5 or B14 flange. Frame 180 support enables heavy-duty industrial applications in an aluminium package that weighs 40% less than cast iron.
40% lighter than comparable cast iron. Enables field installation by two workers without overhead crane – critical for remote renewable energy sites and underground mining operations.
Extends the ratio range to 240:1 with higher transmission efficiency than equivalent double-worm configurations. The standard approach for solar tracker drives and slow-speed positioning systems.
⚙ Industry Applications
90 mm aluminium worm reducer for photovoltaic panel tracking mechanisms. Paired with PC080 helical pre-stage, it achieves tracking ratios to 240:1 from a standard motor – the complete solar tracker drive solution.
Large mixing vessel drives for chemical processing, water treatment, and food production. Ø35 or Ø38 output matches standard agitator shaft couplings directly without adaptor.
Head drives for medium-heavy belt and chain conveyors in aggregate handling, timber processing, and recycling plants. 479 Nm handles loaded belt tension at sustained operating speeds.
Low-speed drives for large dosing pumps, industrial ventilation fans, and cooling tower mechanisms up to 4 kW input power.
⚙ Selection Guide and Mounting Positions
Select the NMRV090 for output torque requirements between 172 Nm and 479 Nm at input power up to 4 kW. Step up to the NMRV110 at 648 Nm for heavier loads. The NMRV075 at 233 Nm is more cost-effective for moderate-heavy applications.
| Position | Code | Oil Note |
|---|---|---|
| Horizontal | B3 | Standard fill |
| Inverted | B8 | Increased fill |
| Vertical up | V5 | Reduced fill |
| Vertical down | V6 | Maximum fill |
| Wall-mount L/R | B6/B7 | Per mounting chart |
⚖ Aluminium vs Cast Iron – Heavy-Duty Comparison
At the 90 mm size class, the weight advantage of aluminium becomes increasingly significant for installation logistics and structural design. The NMRV090 at 13 kg replaces cast iron units weighing 22+ kg.
| Feature | Aluminium NMRV | Cast Iron |
|---|---|---|
| Weight | 30-50% lighter | Heavier |
| Corrosion | Excellent | Poor |
| Heat Dissipation | Superior | Moderate |
| Cost | Lower | Higher |
| Noise | Low | Moderate |
| IEC Motor | Direct B5/B14 | Adaptor often needed |
❓ Frequently Asked Questions
▶ What is the maximum output torque of the EP-NMRV090?
▶ Does the NMRV090 support IEC frame 180 motors?
▶ What is the PC080 helical pre-stage?
▶ When should I specify the Ø38 mm output shaft?
▶ What is the thermal capacity of the EP-NMRV090 at 4 kW?
★ Customer Reviews
“NMRV090 on our solar farm tracker drives. 13 kg – our install crew handles it without a crane. Paired with PC080 for tracking ratio. Works perfectly across 200 panel arrays.”
Daniel S. – Sunfield Renewables Pty (Australia)
“Replaced cast iron 090 equivalents on our agitator drives. 40% lighter meant we could simplify the vessel mounting structure significantly. Reduced steel fabrication cost across 8 vessels.”
Thomas R. – Rhein Chemie GmbH (Germany)
“5 units on our timber conveyor head drives. 479 Nm handles the loaded belt even during wet season when log weight increases. Running 2 shifts per day for 20 months with zero issues.”
Antti V. – Nordic Timber Oy (Finland)
⚙ Related Products and Accessories
⚙ IEC Motors: Frames 56-180, B5 and B14. ⚖ Output Flanges: FA, FB, FC, FD. ⚖ Torque Arms: K1=200mm. ⚙ Covers: N2=86mm. ⚙ Pre-Stages: PC071, PC080 helical units.
Get Your EP-NMRV090 Quote Today
Contact Ever Power for pricing, OEM specifications, and bulk orders. Email: [email protected]
