Description
EP-NRV063 — Shaft-Input Medium-Duty Aluminium Worm Gear Reducer
The EP-NRV063 is the shaft-input version of the NMRV63, sharing the same 63 mm centre distance, 5,595 N·m maximum output torque, and 2.2 kW input power rating in an identical die-cast aluminium housing, but configured with a solid keyed input shaft in place of the bore-input IEC flange. This configuration makes the NRV063 the natural choice when power arrives via chain sprocket, belt pulley, hydraulic motor output, or PTO-driven countershaft — driving arrangements that cannot present an IEC flange face to the gearbox. Compared with the NRV050 at 50 mm centre distance, the NRV063 delivers 31% more output torque, enabling it to handle heavier chain-driven loads while maintaining the NRV series’s lightweight aluminium housing and corrosion-resistant finish. In Australian industry, the NRV063 is particularly valued for print and packaging line chain drives and agricultural machinery driven by PTO countershafts, where the solid shaft input integrates naturally into existing chain or belt drive train layouts without requiring an IEC motor adaptor or modifying the drive geometry.
Technical Specifications — EP-NRV063
| Parameter | Value |
|---|---|
| Series | NRV (Solid Shaft Input, No 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 |
| Input Type | Solid shaft input, no IEC flange |
| Housing Material | Die-cast aluminium alloy |
| Worm Wheel Material | Phosphor bronze |
| Worm Shaft Material | 20CrMnTi alloy steel, case hardened, precision ground |
| Equivalent NMRV | NMRV63 (same internal assembly) |
| 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 |
NRV063 Performance Table (2.2 kW / 1400 r/min)
| Ratio (i) | Output Speed (r/min) | Output Torque (N·m) | Fr max Input (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 | — | 1.6 |
| 25 | 56 | 2,696 | — | 1.4 |
| 30 | 47 | 2,973 | 6,270 | 1.3 |
| 40 | 35 | 3,272 | — | 1.1 |
| 50 | 28 | 3,524 | — | 0.9 |
| 60 | 23 | 3,745 | — | 0.9 |
| 80 | 18 | 4,122 | — | 0.9 |
| 100 | 14 | 5,595 | — | 0.9 |
✅ Why Choose the NRV063?
🔗 Chain & Belt Drive Integration
The NRV063’s solid keyed input shaft mounts standard chain sprockets and belt pulleys directly, making it the fastest-to-install option for factory layouts where the motor is remotely positioned from the gearbox.
📈 5,595 N·m — Medium-Duty Output
Identical torque to the NMRV063, confirming the shaft-input arrangement carries no torque penalty. Covers print-line, packaging, and agricultural conveyor demands up to 2.2 kW.
◯ 28 mm Output Bore
The 28 mm H7 hollow output bore and DZ solid shaft match the shaft dimensions of standard chain sprockets and coupling hubs in the 2.2 kW power class.
⛁ Corrosion-Free Aluminium Housing
Die-cast aluminium with electrostatic paint survives years of service in dusty print-shop atmospheres, outdoor agricultural environments, and the periodic wash-down typical of Australian food processing facilities.
🅆 Six Mounting Positions
B3, B6, B7, B8, V5, V6 orientations allow the NRV063 to be installed wherever the chain or belt geometry demands, without special mounting hardware or angle-compensation brackets.
🏭 Application Sectors
🖼 Print & Packaging Chain Drives
Shaft-input worm gear reducer for chain-driven print-line take-up rolls, packaging machine indexing drives, and laminating machine nip drives where chain from a central drive shaft delivers power to multiple process stations.
🌿 Agricultural & Rural Equipment
Medium-duty NRV worm gearbox for grain-cleaning machinery, feed conveyor chain drives, and crop-processing equipment driven from PTO countershafts in Australian grain and livestock farming operations.
⚙ Industrial Automation
Compact aluminium worm gear reduction gearbox for custom automation stages where a chain-driven line shaft supplies multiple work stations and individual IEC motor mounting is impractical or cost-prohibitive.
📥 Textile & Garment Machinery
Corrosion-resistant shaft-input worm gearmotor alternative for weaving machine chain-driven take-up and let-off drives where the drive arrangement uses roller chain rather than an IEC-flanged motor.
🔎 NRV063 vs NMRV063 Selection
NRV063 vs NMRV063 — Which Series to Choose
| Feature | EP-NRV063 (Shaft Input) | EP-NMRV063 (Flange Input) |
|---|---|---|
| Input Configuration | Solid keyed shaft | Bore input with IEC flange |
| Best Drive Source | Chain, belt, coupling, hydraulic motor, PTO | Direct IEC face-mount motor |
| IEC Flange | Not applicable | Multiple B5/B14 sizes |
| Output Torque | Identical | Identical |
| Housing Dimensions | Identical | Identical |
| Self-Lock at i≥30 | Yes | Yes |
| Best For | Remote or non-standard drive sources | Standard motor-integrated assemblies |
NRV063 DZ Output Shaft Dimensions
| G1 (mm) | K1 (mm) | L/DZ (mm) | L1/SZ (mm) | b2 (mm) | d h6 (mm) | Keyway |
|---|---|---|---|---|---|---|
| 109.5 | 173 | 219 | — | 8 | 28 | M10 |
❓ FAQs — EP-NRV063
What is the input shaft specification of the NRV063?
The NRV063 input shaft is a solid keyed shaft, 19 mm h6 diameter with a standard metric key. The shaft is bilateral (protrudes from both sides of the housing) as standard. A single-end configuration is available on request.
How much overhung load can the NRV063 input shaft handle?
The maximum radial load on the NRV063 input shaft is 6,270 N at mid-shaft for ratio 30. For chain-drive installations, calculate the resultant chain pull and confirm it does not exceed this limit. Use a larger-pitch sprocket or duplex chain to reduce tension if needed.
Can the NRV063 replace an existing NMRV063 in a retrofit project?
Not directly — the NRV063 has the same external housing dimensions but presents a solid input shaft rather than a bore-input flange. If the original NMRV063 was motor-flanged, the NRV063 would require a change in the input drive arrangement. For a like-for-like replacement, specify the NMRV063.
Is the NRV063 self-locking at high ratios?
At ratios 30:1 and above, the NRV063 provides static self-locking behaviour (static efficiency below 0.5), identical to the NMRV063. This is useful for inclined conveyor drives where the load must not backdrive the gearbox when the chain drive stops.
What lubrication does the NRV063 ship with?
The NRV063 is factory-filled with ISO VG 220 mineral gear oil, suitable for ambient temperatures up to 40°C. For continuous duty above 35°C, specify synthetic ISO VG 220 to extend oil-change intervals from 5,000 to 8,000–10,000 hours.
⭐ Customer Reviews
★★★★★
“We chain-drive eight NRV063 units from a central line shaft in our packaging hall. The solid input shaft made sprocket fitting straightforward and the 5,595 N·m output torque easily handles our heaviest carton-erecting loads at ratio 40.”
Marcus L. — Maintenance Engineer, Packaging Plant 🇦🇺 Australia (New South Wales)
★★★★★
“The NRV063 replaced a belt-driven cast-iron reducer on our grain cleaning machine. Weight dropped by 9 kg, corrosion in our dusty grain shed is no longer a concern, and the smooth torque output improved grain-cleaner screen accuracy.”
Peter D. — Farm Engineer, Cropping Operation 🇦🇺 Australia (Victoria)
★★★★☆
“Used six NRV063 units on our textile weaving machine take-up chain drives. The bilateral input shaft gave us the flexibility to drive from either side depending on which machine bay we were installing in — a real time-saver.”
Elif T. — Production Engineer, Textile Manufacturer 🇹🇷 Turkey
⚙ Accessories & Compatible Products
⚡ IEC Motors (B5/B14)
Standard single-phase and three-phase AC motors with matching IEC flange. VFD inverter-duty versions available.
🔗 Output Shaft Kits
Single solid (DZ), double-ended (SZ), output flange (F), hollow flange (FL) — all H7/h6 tolerance with standard keyways.
🔨 Torque Arms
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-NRV063
Specify your input shaft configuration, drive type, ratio, and output shaft option. Custom shaft dimensions available for OEM volume orders.
The EP-NRV063 aluminium worm gear reducer features 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. With a solid shaft input design, this medium-duty shaft-input worm gearbox is ideal for chain-driven print and packaging lines, agricultural conveyor equipment, and industrial automation systems where the driving source is a shaft rather than an IEC motor flange.
