Patent ID: 8791609

Claim:
An electrical device, comprising a stator; and a rotor, wherein the electrical device is a generator, a motor or a centrifuge motor, wherein the rotor that is configured as a motor shaft is rotatably supported through at least one rotor bearing relative to the stator, wherein at least one damping device is provided between the stator and the rotor, wherein the damping device includes at least one damping element, wherein the damping element includes an elastomeric material, wherein a rotor bearing support includes a space for an expansion of the damping element, wherein the space extends in a radially outward direction as well as in a radially inward direction from the damping element, wherein the damping device is configured to provide a preload between the stator and the rotor, wherein the damping device is configured to selectively adjust the preload, and wherein the damping element is arranged between the rotor bearing support and the at least one rotor bearing.