One-way clutch for NHK drives
For escape and emergency route
Product information
Small component, big effect!
The one-way clutch for NHK drives from SELVE protects roller shutters and zip screens in the secondary escape and emergency route, and makes sure they operate reliably. This tiny component ensures that the system can only be cranked in the correct direction and does not transmit the force from incorrect cranking. In doing so, it reliably protects the system against damage.
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PRODUCT BENEFITS
- Ensures absolute reliability in an emergency
- Prevents potential incorrect use and damage to the system
- Easy to retrofit: the clutch can be fitted in less than 10 seconds, without opening the roller shutter box
- Reliable, with zero maintenance: the clutch’s fully mechanical operation means it requires no maintenance and extends the service life of the whole system
- Compatible with 12 mm connecting rods and joint bearings from Cherubini/Geiger
- Left or right version of one-way clutch installed, depending on application
- Available in various colours to match the crank
- One-way clutch can also be used in emergency opening drives of other manufacturers
Product videos



Functional examples


Your safety is our priority. Electric roller shutters and zip screens cannot be allowed to block the secondary escape and emergency route. But what happens in an emergency when the shutter is down and the power fails? Closed electrical roller shutters or zip screens can block life-saving escape routes via windows or doors to balconies and terraces. To keep these escape routes reliably accessible in critical situations, make sure that the drive for the roller shutter or zip screen you are purchasing has an emergency hand crank. Remember: every second counts in an emergency. Opening a shutter by hand can cost time that you don’t have.
Technical details
Dimensions | 35 x 64 x 11 mm | |
Operating voltage | 3 V DC | |
Battery | CR 2032 | |
Protection class | IP 20 | |
Permitted ambient temp. | 0°C to +55°C | |
Assembly | Handheld device | |
Frequency | 868 MHz |