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The RV series worm gearbox is ideal for door operators, providing reliable power transmission with self-locking to prevent accidental door movement. Its compact design and high ratio capability ensure smooth and safe door operation.
| Material | Worm shaft: 20CrMnTi alloy steel; Worm wheel: KK alloy copper |
|---|---|
| Ratio | Single stage up to 100, double stage up to 10000 |
| Self-locking | Yes at i≥60 |
| Housing | Aluminum |
| Lubrication | Synthetic worm gear oil |
Available in NRV and NMRV series, with options for VS (variable speed) or helical geared motor combinations for enhanced control.
Constructed with high-grade materials: hardened alloy steel worm shaft for durability, KK alloy copper wheel for low friction and wear, and aluminum housing for lightweight and corrosion resistance.
Specifically used in door operator systems, including automatic sliding doors, overhead doors, and gate operators. Also suitable for similar intermittent duty applications.
We can adapt the gearbox to specific door operator requirements, such as mounting flanges, output shafts, and integrated motors.
It prevents the door from freewheeling down due to gravity, ensuring safety and control.
The optimal ratio depends on door weight and speed; we offer a wide range to suit various needs.
Yes, our NMRV+VS combination is designed for use with variable speed drives.
The aluminum housing is corrosion-resistant, but we recommend protective covers for outdoor installations.
It is designed for quiet operation, minimizing disturbance in residential areas.
Follow the maintenance schedule; synthetic oil extends the interval and improves efficiency.
Yes, we offer customization for shafts and flanges.
Please contact us for warranty terms.
For door operator solutions, contact Jessica via WhatsApp +8615899805924 or email jessica@xgcd.cn.


