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Raydafon Group presents the NRV series – a robust line of input shaft worm gearboxes designed for industrial applications requiring high torque, smooth operation, and exceptional durability. The NRV gearbox features a solid input shaft for direct coupling to a motor or other drive source, making it an ideal choice for conveyor systems, packaging machinery, material handling equipment, and automation solutions. Manufactured with precision‑ground worm gears, high‑grade bronze wheels, and rugged cast iron housings, the NRV delivers consistent performance, low noise, and long service life in demanding environments.
Key Advantages at a Glance
The NRV series is available in a wide range of sizes and ratios to suit diverse applications. Below are typical specifications for standard models. Custom configurations are available upon request.
| Model | Ratio | Input Power (kW) | Output Torque (Nm) | Centre Distance (mm) | Weight (kg) |
|---|---|---|---|---|---|
| NRV‑25 | 5:1 – 80:1 | 0.06 – 0.25 | up to 20 | 25 | 1.2 |
| NRV‑30 | 5:1 – 100:1 | 0.09 – 0.37 | up to 40 | 30 | 1.8 |
| NRV‑40 | 5:1 – 100:1 | 0.12 – 0.75 | up to 80 | 40 | 3.5 |
| NRV‑50 | 5:1 – 100:1 | 0.18 – 1.5 | up to 150 | 50 | 5.8 |
| NRV‑63 | 5:1 – 100:1 | 0.25 – 2.2 | up to 300 | 63 | 9.2 |
| NRV‑75 | 5:1 – 100:1 | 0.37 – 4.0 | up to 500 | 75 | 14.5 |
| NRV‑90 | 5:1 – 120:1 | 0.55 – 7.5 | up to 900 | 90 | 22.0 |
| NRV‑110 | 5:1 – 150:1 | 1.1 – 15.0 | up to 1800 | 110 | 38.0 |
| NRV‑130 | 5:1 – 160:1 | 1.5 – 22.0 | up to 3000 | 130 | 55.0 |
* Values are indicative. Consult our engineering team for exact specifications and custom designs.
Every NRV gearbox undergoes 100% inspection including gear tooth geometry, hardness testing, backlash measurement, and noise/vibration analysis. We provide material certificates and can arrange third‑party inspection upon request. Full traceability from raw material to finished product is maintained.
Raydafon specialises in tailor‑made worm gearboxes. We can modify existing NRV designs or develop entirely new units based on your performance requirements, space constraints, and connection interfaces. Common customisations include:
Request a free sample or custom quote – our engineers respond within 24 hours with competitive factory pricing.
Partner with Raydafon Group – Your NRV Worm Gearbox Expert
Get reliable input shaft worm gearboxes tailored to your industrial needs. Request a quote, a free sample, or engineering consultation today. Our team responds within 24 hours.
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Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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