Permanent magnetic coupling

The synchronous clutch

Synchronous clutches transmit torque due to magnetic force, which is produced through periodically arranged, opposite lying permanent magnets. According to the size of the clutch torques up to 1000 Nm can be transmitted. When exceeding the rated torque level the magnetic force breaks off, the clutch slips through and now can only transmit a minor rest torque. The synchronous clutch owes its name to its nature, only able to transmit torque if a synchronous action of the connecting system is granted.

The permanent magnetic synchronous clutch consits of two separated halfs which have to be supported by the customer and then are telescoped. In the inner part of the outside hub and on the outside of the inner hub the permanent magnets are attached. The maximum transmittable torque of the clutch can be changed by modifying the hub submergence. At overload status the clutch will slip through in a "bucking" manner, contact free and without any abrasion. The clutch is connected with the shaft by clamping hubs.  

The hysteresis clutch 

At this type of clutch, one half of the clutch is coated with a hysteresis lining instead with a permanent magnet. This hysteresis material acts similar according to the permanent magnet, but through the hysteresis lining poles can be changed with an extrem low power demand. In case the rated torque level of the clutch exceeds, the clutch begins to slip through. Thereby the hysteresis material takes up energy from the starting system, due to the permanent changing of poles caused by the passing by of the permanent magnets, and transforms this kinetic power into heat which is conducted away into the enviroment.

The hysteresis magnetic clutch consists of two seperated halfs which are telescoped. In the inner part of the outside hub the hysteresis material is coated on, on the outside of the inner hub the permanent magnets are attached. The maximum transmittable torque of the clutch can be changed by modifying the hub submergence. At overload status by modifying the clutch will slip through in a “sliding” manner, contact free and without any abrasion. The clutch is connected with the shaft by clamping hubs.