Descrição
EP-NRV063 Worm Reducer — 300 Nm Heavy-Duty Shaft-Mount Worm Speed Reducer
The EP-NRV063 aluminum worm reducer steps into heavy-duty territory within the NRV shaft-mount series — delivering up to 300 Nm of sustained output torque from a housing weighing just 6.2 kg. This torque level covers the demanding applications that exceed the NRV050’s capability: heavy industrial conveyor head drives, large agitator vessel drives in food ingredient production, and irrigation pump actuators in Australian rural water infrastructure. The NRV063 provides all of this without the foot bracket, shaft coupling, and alignment procedure required by foot-mount equivalents.
The NRV063’s 30 mm H8 output shaft is the standard bore for heavy-duty industrial chain sprockets, large timing pulleys, and centrifugal pump impellers in the 0.75–2.2 kW motor class. With 4,100 N radial load capacity, it supports direct chain sprocket and V-belt sheave mounting without an outboard bearing support — the highest radial load rating among the compact NRV shaft-mount reducers in this torque range. IEC 90B/100B and NEMA 56C/140TC input flanges ensure compatibility with both metric and imperial motors, covering the full range of motor standards used in Australian food processing, agricultural OEM, and mining support equipment.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NRV063 |
| Weight (without motor) | 6.2 kg |
| Gear Ratios | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Max Output Torque (M2) | Up to 300 Nm |
| Output Speed Range | 14 – 186.7 rpm (at 1400 rpm input) |
| Max Radial Load Fr2 | Up to 4,100 N |
| Output Shaft Dia. (Metric) | 30 mm H8 |
| Output Shaft Dia. (Inch) | 1.125 in (−0.0005) |
| Keyway (output) | 8 × 32 mm |
| Housing Material | Die-cast aluminum alloy |
| Worm Wheel Material | Phosphor bronze |
| Mounting Type | Shaft-mount (hollow bore) + torque arm |
| Input Options | IEC 90B, 100B / NEMA 56C, 140TC |
| Torque Arm | K1=150 mm, 16 mm pin dia. |
| Protection Class | IP54 standard |
| Operating Temperature | -10 to +40 deg C |
Dimensional Data — Metric & Inch
| Dimension | Metric (mm) | Inch (in) |
|---|---|---|
| Output Shaft dia. | 30 mm H8 | 1.125 in |
| Keyway (output) | 8 × 32 mm | 0.25 × 1.625 in |
| Output Shaft Length | 50 mm | — |
| Torque Arm K1 | 150 mm | 5.91 in |
| Pin Dia. (torque arm) | 16 mm | 0.630 in |
| Max Radial Load | 4,100 N | — |
NRV063 vs. NMRV063 — Shaft-Mount vs. Foot-Mount
| Criterion | EP-NRV063 (NRV Shaft-Mount) | NMRV Foot-Mount |
|---|---|---|
| Output Torque | 300 Nm ✅ | 300 Nm |
| Mounting Method | Hollow bore on shaft ✅ | Foot bracket + coupling |
| Radial Load Capacity | 4,100 N ✅ | Similar |
| NEMA 140TC Acceptance | Yes ✅ | Yes |
| Installation Clearance | Minimum ✅ | Larger |
| Alignment Procedure | Not required ✅ | Required |
Core Features & Engineering Advantages
⚙ 300 Nm — Heavy-Duty Industrial Shaft-Mount
300 Nm in a shaft-mount reducer at 6.2 kg enters genuine heavy-duty industrial drive territory. For Australian food processing plants running conveyor belt head drives at 1–2 kW motor power, the NRV063 eliminates the foot bracket, coupling, and alignment procedure of foot-mount alternatives without any torque compromise.
🔥 4,100 N Radial Load — Direct Sprocket Mount
The highest radial load capacity in the NRV compact series at this torque level. Supports direct ANSI No. 80 and No. 100 roller chain sprocket mounting, and B-section and C-section V-belt sheave mounting, without an outboard bearing pedestal — reducing drive component count and eliminating a potential maintenance point.
📈 30 mm Standard Heavy Shaft
The 30 mm H8 shaft matches bores of heavy-duty industrial chain sprockets, large timing pulley hubs, and centrifugal pump impellers in the 0.75–2.2 kW class. Inch option 1.125 in available for imperial-standard driven equipment common in Australian mining ancillary and agricultural OEM machinery.
📝 NEMA 140TC — 2.2 kW Motor Direct Mount
The NRV063 accepts NEMA 140TC input flanges, enabling direct mounting of 1.5–2.2 kW integral-horsepower motors in the 140TC frame common in Australian agricultural machinery and mining support equipment without custom adaptor fabrication.
🌞 Self-Locking at 30:1 and Above
Inherent self-locking at ratios of 30:1 and above eliminates the need for a separate load-holding brake in gate actuators, loaded auger hold-position applications, and slow conveyor drives where the loaded belt must not creep when the motor is de-energised.
Application Scenarios & Industry Suitability
🎉
Heavy Food Processing Conveyors
Belt conveyor head drives at major Australian fruit packing sheds, vegetable processing plants, and dairy processing facilities — 300 Nm handles the full load of heavily laden food processing conveyor systems in continuous 16–20 hour operation.
⚗
Industrial Agitation & Mixing
Large agitator vessel drives in food ingredient, sauce, and condiment production facilities — the 30 mm shaft and 300 Nm output handle high-viscosity product blending without the high inertia start damage that affects lighter reducers.
🏛
Irrigation & Water Infrastructure
Irrigation pump actuator drives, sluice gate operators, and water authority valve actuator drives across rural and regional Australia — self-locking at high ratios holds valve and gate position without additional locking hardware.
⛩
Mining Support & Quarrying
Aggregate conveyor ancillary drives, crusher feed conveyor drives, and screen vibrator auxiliary drives in Australian quarrying and mining support operations — 300 Nm covers the demanding duty cycle of mining support ancillary drives.
Selection Guide — NRV063 Ratio Selection
- Ratio 7.5–15: Faster conveyor and pump drives — 93–186 rpm, moderate torque.
- Ratio 20–50: Standard processing and agitator drives — 28–70 rpm, 150–250 Nm.
- Ratio 60–100: Slow actuator and gate drives — 14–23 rpm, self-locking, up to 300 Nm.
Shaft & Torque Arm Configuration
Output: 30 mm H8 solid shaft with 8×32 mm keyway and M12 threaded end. Inch: 1.125 in. Hollow bore mounts directly onto driven shaft — specify driven shaft diameter at order. Torque arm K1=150 mm, 16 mm pin. Input: IEC 90B, 100B, NEMA 56C, or 140TC — specify at order.
Frequently Asked Questions
❓ What output torque does the NRV063 deliver?
Up to 300 Nm at 100:1 ratio — covers heavy industrial conveyor head drives, large agitator vessel drives, and irrigation pump actuators exceeding the NRV050’s 180 Nm capacity.
❓ What is the output shaft diameter of the NRV063?
30 mm H8 standard, 1.125 in inch option. Matches heavy-duty industrial chain sprockets, large timing pulleys, and centrifugal pump impellers in the 0.75–2.2 kW class.
❓ Does the NRV063 support NEMA 140TC input motors?
Yes — accepts NEMA 56C and 140TC alongside IEC 90B and 100B. Covers 1.5–2.2 kW integral-horsepower motors common in Australian agricultural OEM and mining ancillary equipment.
❓ What is the radial load capacity of the NRV063 output shaft?
Up to 4,100 N at 100:1 — supports direct ANSI No. 80/100 chain sprocket and V-belt sheave mounting without an outboard bearing pedestal.
❓ What is the difference between NRV063 and NRV075?
NRV063: 300 Nm, 6.2 kg, 30 mm shaft, 4,100 N radial load. NRV075: ~500 Nm, 9.5 kg, 35 mm shaft with higher radial load. Select NRV075 for over 300 Nm sustained output.
Customer Reviews
★★★★★
“Using NRV063 on heavy conveyor belt head drives at our fruit packing shed in Mildura. The 30 mm shaft matched our existing drive drum bore and shaft-mount eliminated the coupling alignment we always struggled with. Twelve months continuous, no issues.”
Jason Brooks 🇦🇺 — Operations Manager, Fruit Packing Shed, Australia
★★★★★
“Installed NRV063 on large agitator vessel drives in our food ingredient plant in Warsaw. 300 Nm handles our high-viscosity sauce blending in continuous 16-hour shifts without any overheating. Excellent product.”
Aleksandra Nowak 🇵🇱 — Process Engineer, Food Ingredient Plant, Poland
★★★★½
“Used NRV063 on irrigation pump actuator drives in our water management system. Self-locking at 100:1 holds valve position on power loss without additional locking. The 30 mm shaft and 300 Nm rating exactly matched our design requirements.”
Chen Guohua 🇨🇳 — Project Engineer, Water Management, China
Compatible Accessories & Related Products
🔌
IEC 90B/100B Motor Adaptors
Direct motor mounting for 0.37–2.2 kW motors in 90 and 100 frame — standard motor sizes for Australian food processing and agricultural conveyor drives.
🔨
Torque Arm (K1=150 mm)
16 mm pin dia., M16 weld-on pin brackets. 150 mm arm length reduces bracket weld stress while providing secure anti-rotation for 300 Nm output torque.
🔃
NRV075 Upgrade
For applications requiring over 300 Nm, the NRV075 provides up to ~500 Nm with a 35 mm shaft in the same shaft-mount configuration.
⚙
NMRV063 Foot-Mount Variant
Five NEMA flange options (FA–FE, widest in series) and foot-mount base for applications where shaft-mount is not suitable. Same torque and ratio range as NRV063.
Specify the EP-NRV063 for Your Heavy Industrial Drive
Application support for ratio selection, shaft sizing, and torque arm configuration for Australian food processing, agricultural, and industrial OEM customers.
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