Description
EP-NMRV063 — Medium-Duty Aluminium Worm Gear Reducer
The EP-NMRV063 aluminium worm gearbox marks the entry point into Ever Power’s medium-duty NMRV range. With a 63 mm centre distance, it accepts up to 2.2 kW and produces a maximum output torque of 5,595 N·m at ratio 100 — a step-change from the NMRV050’s 4,280 N·m capability. Print and packaging manufacturers rely on the NMRV063 for gravure and flexographic printing press drives where smooth, low-vibration torque is critical to print quality. In agricultural settings across Queensland and Victoria, it powers grain conveyors, crop-dryer augers, and irrigation pump drives where the aluminium housing’s corrosion resistance outlasts cast-iron alternatives in humid outdoor conditions. Compared with the NMRV050, the NMRV063 introduces a wider IEC flange portfolio (71B5 through 90B14), a larger standard output bore of 28 mm, and higher radial-load ratings, making it the preferred choice when a 1.5–2.2 kW motor needs to be directly flanged to the gearbox without an intermediate coupling.
Technical Specifications — EP-NMRV063
| Parameter | Value |
|---|---|
| Series | NMRV (Bore Input with Input Flange) |
| Centre Distance | 63 mm |
| Reduction Ratios | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Rated Input Power | Up to 2.2 kW |
| Output Speed Range | 14 to 280 r/min (at 1400 r/min input) |
| Max Output Torque | 5,595 N·m |
| Housing Material | Die-cast aluminium alloy |
| Worm Wheel Material | Phosphor bronze |
| Worm Shaft Material | 20CrMnTi alloy steel, case hardened, precision ground |
| IEC Input Flanges | 71B5, 71B14, 80B5, 80B14, 90B5, 90B14 |
| Output Bore Diameter | 28 mm standard (H7 with keyway) |
| Lubrication | ISO VG 220 gear oil (factory filled) |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Protection Class | IP54 |
| Ambient Temperature | -10°C to +40°C |
NMRV063 Performance Table (2.2 kW / 1400 r/min)
| Ratio (i) | Output Speed (r/min) | Output Torque (N·m) | Radial Load (N) | Service Factor (fs) |
|---|---|---|---|---|
| 7.5 | 187 | 1,315 | — | 2.5 |
| 10 | 140 | 1,447 | — | 1.9 |
| 15 | 93 | 1,657 | — | 1.3 |
| 20 | 70 | 2,503 | 82 | 1.6 |
| 25 | 56 | 2,696 | 72 | 1.4 |
| 30 | 47 | 2,973 | 76 | 1.3 |
| 40 | 35 | 3,272 | 120 | 1.1 |
| 50 | 28 | 3,524 | 144 | 0.9 |
| 60 | 23 | 3,745 | 140 | 0.9 |
| 80 | 18 | 4,122 | 113 | 0.9 |
| 100 | 14 | 5,595 | 129 | 0.9 |
✅ Core Features & Benefits
📈 5,595 N·m Output Torque
The NMRV063 delivers 33% more torque than the NMRV050 while maintaining the same aluminium alloy housing architecture. This torque uplift enables direct replacement of bulkier cast-iron units in retrofit projects without structural modifications.
🕵 Expanded IEC Flange Portfolio
Six IEC flange options from 71B5 to 90B14 cover the mainstream 1.1–2.2 kW motor range, giving OEM builders a single gearbox platform compatible with motors from all major manufacturers.
◯ 28 mm Output Bore
The standard 28 mm H7 hollow output bore and 28 mm h6 DZ solid shaft match IEC shaft diameters for 2.2 kW motors, eliminating bore-machining costs and ensuring a reliable interference fit.
🕶 Low-Vibration Drive
Precision-ground worm shaft paired with phosphor-bronze wheel delivers smooth, jerk-free rotation critical for print-line and gravure press applications where torque ripple causes registration errors.
⛁ Corrosion-Resistant for Outdoor Use
Electrostatic paint and natural aluminium oxide layer provide multi-year protection against Australia’s coastal salt-spray and rural humidity without additional anti-rust treatment.
🏭 Application Sectors
🖼 Print & Packaging Lines
Worm gear speed reducer for gravure and flexographic printing press drives, rotary die-cutters, and laminating machine rollers where low-vibration torque delivery directly affects product quality.
🌿 Agricultural Conveyors
Corrosion-resistant aluminium worm gearbox for grain augers, crop-dryer conveyors, and fertiliser spreader drives — proven in the dust-laden, humid conditions of Australian grain-belt operations.
🚮 Material Handling
Industrial worm gearmotor for pallet conveyors, roller-sorter drives, and accumulation tables in warehousing and distribution centres requiring smooth 20–60 r/min output.
📥 Textile & Garment Machinery
Worm gear reduction gearbox for weaving machine take-up rolls, fabric-tension drives, and winding stations where precise, consistent low-speed torque prevents fabric defects.
🔎 Selection Guide & Shaft Dimensions
- Required output torque: M2 = 9550 × P × η / n2. At 1.5 kW and 28 r/min: M2 = 9550 × 1.5 × 0.82 / 28 ≈ 419 N·m at motor → multiply by ratio 50 → ≈ 3,524 N·m — within NMRV063 rating.
- Ratio selection: i = n1 / n2 → 1400/28 = 50.
- Service factor: for uniform load fs = 1.0; medium shock fs = 1.25–1.5.
- IEC flange: match your motor frame — 71B5/B14 for 0.75–1.5 kW; 90B5/B14 for 1.5–2.2 kW.
NMRV063 Output Shaft Dimensions
| Parameter | DZ (Single) | SZ (Double) |
|---|---|---|
| G1 (mm) | 109.5 | 109.5 |
| K1 (mm) | 173 | 173 |
| L (mm) | 219 | â |
| b2 (mm) | 8 | 8 |
| d h6 (mm) | 28 | 28 |
| Keyway m | M10 | M10 |
⚖ NMRV063 vs Cast-Iron Worm Reducers
| Feature | EP-NMRV063 | Cast-Iron Equivalent |
|---|---|---|
| Approximate Weight | ~7 kg | ~16 kg |
| Max Torque | 5,595 N·m | Similar, at double the weight |
| Corrosion Resistance | Excellent — aluminium oxide + paint | Rusts in 6–18 months outdoor |
| IEC Flange Range | 6 sizes (71–90 frame) | Usually 1–2 sizes |
| Heat Dissipation | Finned aluminium — superior | Retains heat at sustained load |
| Mounting Options | 6 positions | Typically 2 positions |
❓ Frequently Asked Questions — EP-NMRV063
How does the NMRV063 differ from the NMRV050?
The NMRV063 has a 63 mm centre distance versus 50 mm, delivering 5,595 N·m max torque (vs 4,280 N·m) and accepting up to 2.2 kW (vs 1.1 kW). It introduces six IEC flange options covering the 71–90 motor frame range and a larger 28 mm standard output bore.
What input motor power range is supported?
The NMRV063 spans 0.12 kW (i=7.5, ratio 7.5:1) up to 2.2 kW across the full ratio range. Most users pair it with 0.75–2.2 kW three-phase motors in IEC 71–90 frames.
Is the NMRV063 suitable for printing press applications?
Yes. The precision-ground worm shaft minimises torque ripple and backlash, making the NMRV063 widely used in gravure and flexographic printing press section drives where registration accuracy depends on smooth, consistent roll rotation.
What is the radial load rating for the NMRV063 output shaft?
At ratio 30, the maximum radial load Fr is 76 N at the shaft centre. At ratio 100, it rises to 129 N. Always check the specific radial load value for your selected ratio against the overhung load imposed by your sprocket, pulley, or gear on the output shaft.
Can the NMRV063 be paired with a servo motor?
Yes, using a custom adaptor plate. Provide the servo motor’s output shaft diameter, key dimensions, and pilot bore diameter; our engineering team will confirm or supply a matched adaptor. Servo-grade applications should specify the backlash-minimised (lapped gear pair) option.
⭐ Customer Reviews
★★★★★
“We replaced cast-iron worm reducers on our gravure printing press section drives with the NMRV063 and immediately noticed improved registration accuracy. The lower vibration signature made a measurable difference on fine-screen jobs. Two years in and maintenance costs are virtually zero.”
Michael T. — Production Manager, Gravure Print House 🇦🇺 Australia (NSW)
★★★★★
“Our grain auger system runs eight NMRV063 units at i=40. After two harvests in dusty paddock conditions with daytime temperatures above 40°C, the aluminium housings show no corrosion and oil seals are still tight. Exceptional field reliability.”
Darren K. — Farm Operations Manager, Mixed Cropping 🇦🇺 Australia (Western Australia)
★★★★☆
“We use the NMRV063 as the primary drive on our automated pallet conveyor line. The gearbox fits neatly within our existing frame envelope and the IEC 90B14 flange aligned perfectly with our 2.2 kW motor on the first assembly.”
Lars H. — Systems Engineer, Logistics Automation OEM 🇸🇪 Sweden
⚙ Accessories & Compatible Products
⚡ IEC Motors (B5/B14)
Standard single-phase and three-phase AC motors with matching IEC flange. VFD inverter-duty versions available for variable-speed control.
🔗 Output Shaft Kits
Single solid (DZ), double-ended (SZ), output flange (F), hollow flange (FL) — all to H7/h6 tolerance with standard keyways.
🔨 Torque Arms & Brackets
Steel torque reaction arms for shaft-mount configurations; foot-mounting plates for B3/B6 orientations.
🔒 Seal & Breather Kits
Replacement lip-seal kits, vented breather plugs, and magnetic drain plugs for extended service intervals.
Get a Quote for EP-NMRV063
Our team will confirm the exact ratio, IEC flange, and output shaft for your application within one business day. Volume pricing and OEM partnerships available worldwide.
The EP-NMRV063 aluminium worm gear speed reducer has a 63 mm centre distance, ratios from 5 to 100, rated input power up to 2.2 kW, and maximum output torque of 5,595 N·m. IEC flanges 71B5 through 90B14 are directly compatible. This medium-duty worm gearbox delivers outstanding torque density in a corrosion-resistant aluminium housing, ideal for print and packaging lines, agricultural conveyors, and material-handling equipment across Australia.
