Rotor for an electric drive machine for driving a compressor, a turbine or a charger shaft of a turbocharger, and turbocharger comprising an electric drive machine and such a rotor

A rotor for an electric drive unit for driving a compressor, or a turbine, or a turbocharger shaft of an exhaust-gas turbocharger, comprising:

• a rotor body embodied around a rotation axis of the rotor and being mountable using a threaded bushing on a turbocharger shaft of the exhaust-gas turbocharger;
• a receptacle for at least one permanent magnet embodied on the rotor body;
• at least one permanent magnet disposed in the receptacle of the rotor body;
• wherein the rotor body has a further receptacle which extends in a direction of the rotation axis and in which the threaded bushing is disposed inside the rotor body, the further receptacle being disposed in the rotor body with an offset in a direction of the rotation axis relative to the receptacle of the at least one permanent magnet.

An exhaust-gas turbocharger, comprising:

• an electric drive unit configured to drive a compressor, or a turbine, or a turbocharger shaft of the exhaust-gas turbocharger;
• the turbocharger shaft mounted rotatably around a rotation axis;
• and
• the electric drive unit having a rotor and a stator, the stator having a drive winding for generation of a driving magnetic field driving the rotor, the rotor having a rotor body embodied around the rotation axis, a receptacle for at least one permanent magnet being embodied on the rotor body, at least one permanent magnet being disposed in the receptacle of the rotor body, the rotor body being thread-mounted by way of a threaded bushing onto an external thread of the turbocharger shaft in such a way that a clamping force acting in a direction of the rotation axis presses the rotor body indirectly or directly against a stop on the turbocharger shaft, wherein the rotor body has a further receptacle which extends in the direction of the rotation axis and in which the threaded bushing is disposed inside the rotor body, the further receptacle being disposed in the rotor body with an offset in the direction of the rotation axis relative to the receptacle of the at least one permanent magnet.