Abstract: An electrical machine (10), in particular a machine which can be operated in electric generator mode and/or in electric motor mode, comprising a rotor (14) which has a shaft (13), wherein a part of a turbomachine (68) is formed on the shaft (13) and the part is a fan (60), wherein the fan (60) has a circumference (83) with a circumferential direction (85), and a housing (63) of an electrical unit (45) is adjacent to the fan (60) and serves as a housing of the turbomachine (68), and there is a gap (65) between the fan (60) and the housing (63) of the electrical unit (45), characterized in that the gap (65) has a radial width (B65R) which has a different magnitude depending on a circumferential position (U602) on the fan (60) which is arranged on the shaft (13).

Abstract: An electrical machine (10), in particular a machine which can be operated in electric generator mode and/or in electric motor mode, comprising a rotor (14) which has a shaft (13), wherein a part of a turbomachine (68) is formed on the shaft (13) and the part is a fan (60), wherein the fan (60) has a circumference (83) with a circumferential direction (85), and a housing (63) of an electrical unit (45) is adjacent to the fan (60) and serves as a housing of the turbomachine (68), and there is a gap (65) between the fan (60) and the housing (63) of the electrical unit (45), characterized in that the gap (65) has a radial width (B65R) which has a different magnitude depending on a circumferential position (U602) on the fan (60) which is arranged on the shaft (13).