Patent attributes
An electromagnetic rotary drive includes a ring-shaped magnetically effective core arranged around a stator and has a magnetic central plane. The stator is a bearing and a drive stator, with which, the rotor is contactlessly magnetically drivable about an axis of rotation, and with which the rotor is contactlessly magnetically levitatable with respect to the stator. The rotor actively magnetically levitated in a radial plane perpendicular to an axial direction, and passively magnetically stabilized in the axial direction and against tilting. The rotor includes a magnetically effective bearing ring arranged radially externally disposed and spaced from the magnetically effective core, and a bearing stator having a magnetically effective stator ring interacts with the bearing ring. The bearing stator is configured such that the stator ring passively magnetically stabilizes the rotor against tilting, and the bearing ring is connected to the magnetically effective core of the rotor via a connecting element.
