Any engagement after an overload.

After eliminating the overload, the balls automatically engage in the next indentation.

Synchronous engagement after an overload.

After eliminating the overload the rollers automatically engage after a rotation of 360°. Driving and driven side are always placed in the same position to each other. Other degrees of engagement, e. g. 180°, are also possible.

The fail-safe design is a pure torque measurement without any ratchet operation.

In case of overload a signal is given by the limit switch, producing a mechanical separation of driving and driven side = disengagement is not possible.