Motor-propelled machine tool unit e.g. rotatable motor spindle, has stator assembly including bearing housing for holding rolling body, and rotor shaft and bearing housing including running paths of rolling body

摘要

The unit e.g. rotatable motor spindle (2), has a rotor assembly (10) including a rotor shaft (12) that rotates around rotational axis and including a bearing unit (1) arranged in an end region of a tool-and/or work piece receiver (3) and another bearing unit for bearing the rotor shaft in a stator assembly (9). The bearing units include a rolling body (5), and the stator assembly includes a bearing housing (8) for holding the rolling body. The rotor shaft of the rotor assembly and a bearing housing of the stator assembly include running paths (6, 7) of the rolling body.