Electric motor

An electric motor comprising

• a stator, which comprises stator windings,
• a rotor surrounding the stator and comprising permanent magnets,
• a shaft connected to the rotor,
• a housing surrounding the rotor and the stator, and
• a cooling channel which leads through an interior space surrounded by the stator, wherein
• the shaft has a first end, which is arranged in the housing, and a second end, which protrudes out of the housing,
• the housing comprises a first housing component, which forms a base opposite a first axial end of the stator, and a second housing component opposite a second axial end of the stator as a cover, and
• the first housing component has an inlet and an outlet for cooling liquid and an inner part which projects into the stator,
• the inner part forms a sleeve, in which the first end of the shaft is arranged, and the inner part also forms an annular space which is arranged between the stator and the sleeve, wherein a cooling channel section for cooling the stator extends in this annular space,
• the shaft has different diameters and the shaft is mounted in the sleeve formed by the inner part with a first bearing, which is arranged closer to the first end of the shaft than a second bearing and has a smaller bearing inner diameter than the second bearing, and wherein the first bearing is a fixed bearing and the second bearing is a floating bearing.