Description
EP-NMRV025 Compact Aluminium Worm Gear Reducer
The EP-NMRV025 aluminium worm gear reducer is the smallest and most agile member of Ever Power’s NMRV series, engineered for applications where installation space is at a premium yet reliable torque transmission remains essential. With a centre distance of just 25 mm, this unit delivers reduction ratios spanning 5:1 through 100:1, making it versatile for precision-speed-control tasks in food processing lines, pharmaceutical dispensing equipment, packaging machinery, and small conveyor systems. Its die-cast aluminium housing combines ultra-low weight with outstanding corrosion resistance — a critical advantage in washdown and humid environments common across Australian industrial facilities. The bore-input flange design ensures straightforward mounting to IEC-standard motors, while the precision-ground worm shaft and phosphor-bronze worm wheel guarantee quiet, efficient, long-service operation even under continuous duty cycles.
Technical Specifications — EP-NMRV025
| Parameter | Value |
|---|---|
| Series | NMRV (Bore Input with Input Flange) |
| Centre Distance | 25 mm |
| Reduction Ratios | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Rated Input Power | Up to 0.06 kW |
| Output Speed Range | 14 to 280 r/min (at 1400 r/min input) |
| Max Output Torque | 1,006 N·m |
| Housing Material | Die-cast aluminium alloy (corrosion-resistant) |
| Worm Wheel Material | Phosphor bronze |
| Worm Shaft Material | 20CrMnTi alloy steel, case hardened, ground |
| IEC Input Flanges | 56B5, 56B14 |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Lubrication | Oil bath / grease, dual-lip oil seal |
| Protection Class | IP54 |
| Ambient Temperature | -10°C to +40°C |
NMRV025 Performance Table (1400 r/min input, 0.06 kW)
| Ratio (i) | Output Speed (r/min) | Output Torque (N·m) | Service Factor (fs) |
|---|---|---|---|
| 5 | 280 | 439 | 6.2 |
| 7.5 | 187 | 503 | 4.2 |
| 10 | 140 | 553 | 3.5 |
| 15 | 93 | 633 | 2.5 |
| 20 | 70 | 697 | 1.9 |
| 25 | 56 | 748 | 1.6 |
| 30 | 47 | 798 | 1.6 |
| 40 | 35 | 878 | 1.2 |
| 50 | 28 | 946 | 0.9 |
| 100 | 14 | 1,006 | 0.7 |
✅ Core Features & Customer Benefits
☐ Ultra-Lightweight Housing
At 25 mm centre distance, the EP-NMRV025 weighs roughly one-third of cast-iron equivalents. Reduced weight lowers shipping costs, simplifies field installation, and reduces bearing loads on mounting structures.
◯ Corrosion-Resistant Design
Electrostatic high-adhesion paint over aluminium alloy provides lasting protection in humid, coastal, and washdown environments without additional treatment — essential for Australian coastal industrial facilities.
● IEC Modular Input Flange
The bore-input design with IEC-compliant flanges (56B5, 56B14) accepts standard AC motors from any major manufacturer, eliminating custom adaptors and simplifying motor swap-outs during maintenance.
🕶 Superior Heat Dissipation
Aluminium conducts heat roughly four times more effectively than cast iron. The finned exterior keeps operating temperatures stable, extending lubricant life throughout demanding continuous-duty applications.
🔧 Six Mounting Positions
B3, B6, B7, B8, V5, V6 orientations give machine designers maximum layout flexibility. Ships B3 as default and can be quickly reconfigured on site without extra lead time.
🏭 Application Scenarios
🍕 Food & Beverage Processing
Corrosion-resistant aluminium worm gearbox for food processing lines — drives filling heads, portion-control conveyors, and agitators in hygienic environments requiring regular washdown.
💉 Pharmaceutical Equipment
Low-noise worm gear reducer for pharmaceutical dispensing and tablet-coating drum drives where minimal vibration and contamination-free operation are non-negotiable.
📦 Packaging Machinery
Compact worm gear speed reducer for packaging line indexing, label applicators, and small-format wrapping machines where tight envelope dimensions demand a miniaturised gearbox solution.
⚙ Industrial Automation
Precision worm gear reduction gearbox for rotary tables, actuator stages, and small gantry systems in automated assembly cells.
🔎 Selection Guide & Shaft Options
- Determine required output torque using M2 = 9550 x P1 x efficiency / n2.
- Choose reduction ratio by dividing motor speed by desired output speed.
- Verify service factor — torque x fs must not exceed rated torque at that ratio.
- Select IEC flange code — 56B5 or 56B14 for NMRV025.
Output Shaft Variants
| Code | Description | Typical Use |
|---|---|---|
| Standard | Hollow bore output | Direct mount on driven shaft |
| DZ | Single solid output shaft | Standard coupling connection |
| SZ | Double-ended solid shaft | Dual-drive or encoder attachment |
| F | Output flange | Face-mount to driven machinery |
| FL | Hollow output flange | Shaft-mount with flange face |
⚖ NMRV Aluminium vs Traditional Cast-Iron Reducers
| Feature | EP-NMRV025 (Aluminium) | Traditional Cast-Iron Reducer |
|---|---|---|
| Weight | ~65% lighter — lower frame loads | Heavy — increases machine frame loads |
| Corrosion Resistance | Excellent — aluminium oxide + paint | Prone to rust without regular maintenance |
| Heat Dissipation | Superior finned aluminium casing | Limited — needs external cooling at high load |
| IEC Compatibility | Direct-fit standard flange | Often requires custom adaptors |
| Mounting Flexibility | 6 standard positions | Typically 1–2 positions |
| Noise Level | Low — precision ground worm | Higher vibration and acoustic signature |
❓ Frequently Asked Questions
What reduction ratios are available for the EP-NMRV025?
Twelve standard ratios: 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, and 100. Output speeds range from 280 r/min (i=5) down to 14 r/min (i=100) at 1400 r/min motor input.
Which IEC motor flanges are compatible with the NMRV025?
The NMRV025 accepts IEC 56B5 and 56B14 flanges for standard 0.04–0.06 kW motors. Custom adaptor plates available for servo and stepper motors.
Is the EP-NMRV025 suitable for food-grade environments?
The standard NMRV025 passes IP54 washdown requirements. NSF H1 food-grade lubricant and stainless output shaft are available options. IP65 certification available on request.
Can the NMRV025 self-lock at high reduction ratios?
At ratios 30:1 and above, the NMRV025 typically exhibits static self-locking (dynamic efficiency less than 0.5), suitable for vertical lifting where back-drive prevention is required.
What accessories are available for the EP-NMRV025?
Single solid shaft (DZ), double-ended shaft (SZ), output flange (F), hollow flange (FL), and torque arm kits. IEC 56B5 and 56B14 input flanges standard.
⭐ Customer Reviews
★★★★★
“We installed the NMRV025 on our bottling-line label applicators and were impressed by how quietly it runs. After six months of three-shift operation the units show zero sign of leakage and temperature stays well within spec.”
James O. — Production Engineer, Beverage Manufacturer 🇦🇺 Australia
★★★★★
“The compact dimensions of the NMRV025 were critical for our pharmaceutical dispensing module redesign. Fit was exact on the first attempt using the IEC flange. Documentation and dimensional drawings were accurate and complete.”
Dr. Anja K. — Mechanical Design Lead, Pharma Equipment OEM 🇩🇪 Germany
★★★★☆
“We use the NMRV025 on small conveyor indexing stations. The self-locking characteristic at ratio 40 means we do not need a separate brake, which simplified our control panel wiring considerably.”
Takuma S. — Automation Engineer, Electronics Assembly 🇯🇵 Japan
⚙ Accessories & Related Products
⚡ Compatible IEC Motors
Standard single-phase and three-phase AC motors with matching IEC B5/B14 flange. VFD-rated inverter-duty versions available for variable-speed applications.
🔗 Output Shaft Options
Single solid (DZ), double-ended (SZ), output flange (F), hollow flange (FL) — all manufactured to H7/h6 tolerance with standard keyways.
🔨 Torque Arms & Brackets
Steel torque reaction arms for shaft-mount configurations; adjustable foot plates for B3/B6 orientations. Custom brackets available for OEM volume orders.
🔒 Seal & Breather Kits
Replacement lip-seal kits, vented breather plugs, and magnetic drain plugs for extended service intervals.
Get a Quote for EP-NMRV025 Today
Our engineering team is ready to help you select the right ratio, flange code, and output shaft configuration. We support OEM partnerships, distributor accounts, and direct project supply worldwide.
The EP-NMRV025 is a compact aluminium worm gearbox with centre distance 25 mm, ratios 5 to 100, input power up to 0.06 kW, and output torque up to 1,006 N·m. Its corrosion-resistant die-cast aluminium housing and IEC flange compatibility make it ideal for food processing, pharmaceutical dispensing, packaging machinery, and precision automation applications across Australia and international markets.
