Description
EP-NMRV040 Aluminium Worm Gearbox — Overview
The EP-NMRV040 is a reliable mid-range aluminium worm gearbox representing a popular mid-range unit in the NMRV series, engineered around a 040 mm worm gear centre distance. Developed to meet growing demand for lightweight, corrosion-resistant drive solutions across pump drives, industrial mixers, woodworking machinery, and HVAC actuators, it combines precision-manufactured worm and wheel geometry with a robust die-cast aluminium A360 housing that delivers natural corrosion resistance without the bulk of traditional cast iron. The NMRV040 accepts IEC motor flanges (56B5, 63B14, 71B14, 71B5), enabling direct motor-to-gearbox coupling without adaptors — a significant advantage for machine builders seeking compact, efficient drive packages. With output torques up to 400 Nm and reduction ratios from 5–100:1, the EP-NMRV040 reliably serves pump, mixing, and material-handling drives across Australia and international markets. IP65 shaft sealing, six mounting positions, and a smooth baked-enamel finish make it equally at home in food processing washdown areas, outdoor plant rooms, and demanding industrial environments.
Technical Specifications — EP-NMRV040
General Specifications
| Parameter | Specification |
|---|---|
| Model Number | EP-NMRV040 |
| Centre Distance | 40 mm |
| Max Output Torque | 400 Nm |
| Reduction Ratios | 5–100:1 |
| Input Bore Diameter | 9 / 11 mm |
| Output Shaft Diameter | 18 mm |
| Compatible IEC Flanges | 56B5, 63B14, 71B14, 71B5 |
| Max Recommended Input Power | 0.12 kW |
| Input Shaft Radial Load (Fri max) | 3490 N |
| Housing Material | Die-cast aluminium alloy A360 |
| Worm Wheel Material | Phosphor bronze |
| Worm Shaft Material | 20CrMnTi case-hardened steel, ground |
| Surface Treatment | Baked enamel paint (RAL 5010 blue) |
| Lubricant | ISO VG 220 worm gear oil, ~0.20 L |
| IP Rating | IP65 (shaft seals standard) |
| Ambient Temperature | -10°C to +40°C standard; up to +60°C with synthetic oil |
| Max Input Speed | 1,400 rpm (recommended); 1,800 rpm (max) |
| Approx. Weight | ~2.5 kg |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Output Configurations | Solid shaft / Double shaft (DZ) / Output flange (FL) |
| Standards | ISO 9001, CE marking, IEC 60034 motor compatibility |
Performance Selection Data (1,400 rpm Input)
| Ratio (i) | Output Speed (r/min) | Output Torque (Nm) | Input Power (kW) |
|---|---|---|---|
| 7.5:1 | 187 | 400 | 0.12 |
| 10:1 | 140 | 430 | 0.12 |
| 15:1 | 93 | 470 | 0.12 |
| 20:1 | 70 | 500 | 0.12 |
| 30:1 | 47 | 540 | 0.12 |
| 50:1 | 28 | 560 | 0.12 |
Core Features & Benefits
◯Corrosion-Resistant Aluminium Housing
Die-cast A360 aluminium provides inherent corrosion resistance ideal for food processing washdown zones, coastal Australian sites, and humid industrial environments. The baked enamel finish adds UV protection for outdoor installations.
△IEC-Standard Motor Mounting (56B5, 63B14, 71B14, 71B5)
Hollow bore input with IEC-standard flange (56B5, 63B14, 71B14, 71B5) allows direct coupling to AC motors, servos, and stepper motors without separate adaptors, reducing installation time and eliminating alignment problems.
◆Superior Thermal Dissipation
Aluminium’s thermal conductivity (~160 W/m·K) dissipates heat up to 3× faster than cast iron, keeping operating temperatures lower and extending lubricant and seal life in enclosed machine cabinets.
■Six Mounting Positions + Three Output Options
B3, B6, B7, B8, V5, V6 mounting positions combined with solid shaft, double shaft (DZ), and output flange (FL) configurations give machine designers complete layout freedom.
▶Static Self-Locking at High Ratios
At ratios ≥ 40:1, worm geometry provides static self-locking, preventing back-drive under static load without an external brake — simplifying gate actuators, lift platforms, and positioning systems.
●Long Service Life: ≥20,000 Hours L10
Ground worm shafts, precision-hobbed phosphor bronze wheels, and preloaded bearings ensure consistent gear mesh throughout service life, delivering minimum L10 bearing life of 20,000 hours at rated load.
EP-NMRV040 vs Traditional Cast Iron Worm Gearbox
Australian and international machine builders consistently choose aluminium worm gearboxes for their combination of performance, durability, and total cost of ownership advantages over cast iron alternatives.
| Feature | EP-NMRV040 (Aluminium) | Traditional Cast Iron |
|---|---|---|
| Housing Material | Die-cast aluminium A360 | Grey cast iron GG25 |
| Approx. Weight | ~2.5 kg | 30–40% heavier |
| Corrosion Resistance | Excellent — inherent Al₂O₃ oxide layer | Requires coating; prone to rust |
| Thermal Conductivity | ~160 W/m·K — superior heat dissipation | ~50 W/m·K — poor heat dissipation |
| Surface Finish | Smooth baked enamel, easy to clean | Rough cast surface, hard to clean |
| Motor Mounting | Integrated IEC flange (no adaptor) | Often needs separate adaptor plate |
| Noise Level | Low — aluminium damps vibration | Higher — cast iron transmits vibration |
| Food Industry Suitability | High — smooth, corrosion-resistant | Low — porous surface, rust risk |
| IP Rating | IP65 shaft seals standard | IP54–55 typical |
| Price / Performance | Excellent — lower total cost of ownership | Higher initial & lifetime cost |
Application Sectors
The EP-NMRV040 is well suited to the following industries and application types, each benefiting from its compact size, corrosion-resistant housing, and reliable torque output.
⚘ Pump Drives
Suitable worm gearbox for pump drives.
⚙ Industrial Mixing
Suitable aluminium worm reducer for industrial mixers.
⚚ Material Handling
Suitable compact worm gearbox for woodworking machinery.
⚒ Woodworking Machinery
Suitable worm reducer for HVAC damper actuators.
⚛ HVAC Systems
Suitable aluminium gearbox for material handling.
Selection Guide, Mounting Positions & Shaft Configurations
How to Select the Correct Ratio
- Calculate required output torque: M₂ = 9,550 × P (kW) / n₂ (rpm), then multiply by your service factor (fs = 1.0–2.5 depending on daily duty hours and load class).
- Find your ratio: Divide motor speed (typically 1,400 rpm) by required output speed. Select the closest ratio from: 5–100:1.
- Confirm torque capacity: The selected ratio’s rated torque must exceed M₂ × fs. If not, step up to the EP-NMRV050.
Mounting Positions
| Position | Description | Shaft Orientation | Oil Level Note |
|---|---|---|---|
| B3 | Horizontal foot mount | Horizontal | Standard fill level — default factory supply |
| B6 | Foot mount, output shaft down | Vertical downward | Reduce oil by ~15% |
| B7 | Foot mount, output shaft up | Vertical upward | Increase oil by ~15% |
| B8 | Foot mount, output shaft horizontal (180°) | Horizontal reversed | Standard fill level |
| V5 | Flange mount, shaft down | Vertical downward | Reduce oil — check lubrication guide |
| V6 | Flange mount, shaft up | Vertical upward | Increase oil — check lubrication guide |
Output Shaft Options
Standard output shaft diameter: 18 mm. Input bore: 9 / 11 mm.
18 mm diameter with keyway. Default configuration. Model suffix: none.
Shaft exits both sides for bidirectional power take-off. Model suffix: DZ.
Flanged output for direct bolt-on connection, eliminating shaft coupling. Model suffix: FL.
Frequently Asked Questions — EP-NMRV040
▶ What torque capacity does the EP-NMRV040 provide?
The EP-NMRV040 delivers up to 400 Nm at 1400 rpm input, making it a popular mid-range choice for pump drives, industrial mixers, and material handling systems in a compact aluminium housing.
▶ What reduction ratios are available for the EP-NMRV040?
Available ratios are 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, and 100. Lower ratios (5–15) suit fan and pump drives; higher ratios (40–100) maximise torque for slow-speed applications.
▶ Does the EP-NMRV040 include an IEC motor flange?
Yes. The NMRV040 features a hollow-bore input with IEC flanges 56B5, 63B14, 71B14, and 71B5, covering standard motor frames without separate adaptors.
▶ What output shaft options are available?
The standard NMRV040 has a single 18 mm solid output shaft. Add suffix DZ for a dual output shaft (bidirectional power take-off) or FL for an output flange configuration. Specify the required suffix when ordering.
▶ How often should oil be changed in the EP-NMRV040?
Oil change intervals are every 5,000 hours or 2 years under normal conditions. In high-temperature (>40°C) or heavy shock-load environments, reduce to 2,500 hours. The housing holds approximately 0.20 litres of ISO VG 220 worm gear oil.
▶ Is the EP-NMRV040 suitable for outdoor Australian installations?
Yes. The die-cast aluminium housing with baked enamel paint provides UV and weather resistance for outdoor Australian conditions including coastal environments. Confirm the IP rating (IP55 standard, IP65 optional) matches your dust and moisture exposure.
Customer Reviews
★★★★★
“Fitted EP-NMRV040 units on our irrigation pump drives — running continuously through the Australian summer without trouble. The aluminium dissipates heat far better than our old cast iron boxes.”
Michael Kowalski — Industrial Pumps Australia
Australia
★★★★★
“Powers the feed drives on our edge banders. Precise 20:1 ratio delivers exactly the surface speed needed for veneer application. Straightforward installation thanks to IEC flange compatibility.”
Anna Johansson — Woodworking Solutions AB
Sweden
★★★★★
“Used on damper actuator drives throughout our commercial HVAC installations. Low noise is a real advantage in occupied buildings. Self-locking at higher ratios simplifies our relay logic.”
Rajesh Patel — HVAC Systems Ltd
India
Related Products & Accessories
⚙ Compatible Motors
IEC B5/B14 flange single-phase (230V) and three-phase (380V) AC motors for frames: 56B5, 63B14, 71B14, 71B5.
Servo and stepper motors available with input adaptor kits. VFD-compatible motors for variable-speed applications.
⚒ Output Accessories
■ Single solid output shaft (standard)
■ Double bidirectional shaft (DZ)
■ Output flange (FL)
■ Torque arm for torque reaction mounting
■ Dust cover for unused shaft end
◆ Related Series
■ EP-NMRV-E040 — coaxial inline output
■ EP-NRV040 — solid input shaft variant
■ EP-NRV-E040 — solid input, coaxial output
■ EP-NMRV050 — next frame size up
Ready to Order the EP-NMRV040?
Request a quote, technical selection support, or enquire about OEM and distributor partnership opportunities for Australian and international markets.
▼ Distributor & OEM partnerships welcome — volume pricing available
