Abstract: A hub-to-shaft coupling, without any key or keyway, having a pair of coaxial bushings which can be rotated relative to one another. In a first relative angular position, the inner bushing fits loosely within the outer bushing. In a second relative position, the bushings deform one another, pushing the inner bushing against the shaft and the outer bushing against the hub, thereby locking the shaft to the hub. The hub can be unclamped from the shaft without damage to the shaft or hub by rotating the bushings relative to one another back to the first angular position.

Abstract: An apparatus for suppressing torsional and flexural vibrations of rotary shafts which is arranged coaxially to the shaft, has an inner pot constructed as a flange for fixing purposes, an outer rotating ring and elastic damping elements arranged between the pot and the ring including damping elements of a first type which are fixed to the pot and the rotating ring and damping elements of a second type which are only connected to the pot and are separate from the rotating ring. The pot is further characterized by the presence of a plurality of circumferentially distributed slots so that the natural vibration behavior is influenced by speed and improved cooling is effected.