Motor spindle of high power at high speed has rotor-shaped spindle shaft on whose outer surface is support and on inner surface, outer rotating part of drive motor

摘要

A motor spindle of high power at high speed has the spindle shaft (2) with the shape of a rotor on whose outer surface the support is located and on whose inner surface the outer rotating part of the drive motor (3) is mounted. The bearing arrangement and the bearing distance can be selected independently of the dimensions of the motor. The support takes place by aerostatic or aerodynamic bearings. The centrifugal and/or temperature-caused change of the bearing gap is compensated for by the change in diameter of the bearing surfaces in the axial direction. The stator of at least one bearing is designed to be able to slide in the axial direction.