Electrical radial flow machine and powertrain

An electric radial flow machine formed as a permanently excited synchronous machine, comprising:

• a stator;
• a rotor body connected to a rotor shaft for rotation within the stator;
• a spring which applies a spring force to the rotor body in an axial direction such that in a first operating position, the rotor body is held in an axial position in which an overlap between opposing surfaces of the rotor body and the stator is less than 100%;
• a displacement device configured to generate an axial movement between the rotor body and the stator based on a torque produced between the rotor shaft and the rotor body against the spring force;
• the displacement device has a first displacement element, a second displacement element, and at least one rolling element arranged between the first displacement element and the second displacement element;
• the first displacement element is connected to the rotor body and is axially slidable and rotatable at least in certain areas on the rotor shaft, which is arranged so that the rotor shaft cannot be slid axially;
• the second displacement element is connected to the rotor shaft in a rotationally and slidably fixed manner;
• the first displacement element on a side facing the second displacement element has pairs of first ramp elements and the second displacement element has pairs of second ramp elements on a side thereof facing the first displacement element;
• and
• the pairs of first ramp elements each meet to form a roller element receiving depression and the pairs of second ramp elements each meet to form an opposing roller receiving depression, and upon a rotation of the first displacement element relative to the second displacement element or vice versa, the rotor body is pushed on the rotor shaft axially against the spring force.