NRV-VS
Technical Specifications
The NRV-VS series reducer is specifically designed for applications requiring a double input shaft. Manufactured with high-quality materials and advanced processes, it features a compact structure, smooth transmission, low noise, and high load capacity. We are committed to providing you with efficient and reliable transmission solutions.
Based on shaft extension input, input speed 1400 r/min.
Performance Parameters
| Model | Input Power (kW) | Output Speed (r/min) | Output Torque (N·m) | Ratio |
|---|---|---|---|---|
| NRV30 | 0.4 | 186.7 | 18 | 7.5 |
| NRV40 | 0.9 | 186.7 | 40 | 7.5 |
| NRV50 | 1.6 | 186.7 | 71 | 7.5 |
| NRV63 | 2.8 | 186.7 | 128 | 7.5 |
| NRV75 | 4.1 | 186.7 | 185 | 7.5 |
| NRV90 | 6.3 | 186.7 | 290 | 7.5 |
| NRV110 | 12 | 186.7 | 552 | 7.5 |
| NRV130 | 16.1 | 186.7 | 750 | 7.5 |
| NRV150 | 25.8 | 186.7 | 1200 | 7.5 |
* This is a partial list. For complete parameters, please refer to the product catalog or contact us.
Installation & Maintenance
Key points to ensure reliable operation and service life.
Installation Points
- The reducer must be installed on a flat, solid base with tight, anti-vibration anchor bolts.
- Shafts of the prime mover, reducer, and working machine must be accurately aligned after installation.
- When mounting sprockets or gears, position them as close to the bearings as possible to reduce bending stress.
- If the motor is oversized, a support structure should be provided.
Usage Notes
- Before use, check all specifications. The worm input speed should not exceed 1500 r/min.
- Apply load gradually upon startup; do not start at full load.
- The maximum allowable oil temperature is 95°C. Stop and inspect if this is exceeded.
- If the reducer has been stored for more than 4–6 months, it’s recommended to replace the oil seals.
Lubrication & Maintenance
- Models 25–90: Shipped with ISO VG320 synthetic oil, no need to add. Change oil after the first 5000 hours, then every 6000 hours.
- Models 110–150: Shipped with ISO VG460 mineral oil. Change oil after the first 400 hours, then every 4000 hours.
Model Explanation
Quick guide to understanding the NRV-VS designation.
To better understand our product models, here is a brief explanation of the NRV-VS designation:
NRV Represents a worm gear reducer with an input shaft for connection. This is a basic structural form connected to the prime mover via a shaft extension.
VS Indicates that the reducer is equipped with a double extension worm shaft. This design allows power input from both ends of the worm, providing greater flexibility in machine design.
For example, the model NRV063-VS denotes a worm gear reducer with a center distance of 63 mm, equipped with a double input shaft.