Rotary electric machine

A rotary electric machine comprising:

• a rotor core including a steel plate laminated in an axial direction of a rotation shaft of a rotor;
• a stator core provided outside an outer periphery of the rotor core and including a steel plate laminated in the axial direction;
• and
• an outer cylinder including a cooling jacket and press-fitted to an outer periphery of the stator core, wherein
• an average plate thickness of the steel plate of the stator core is smaller than an average plate thickness of the steel plate of the rotor core,
• in the steel plate of the stator core, a plate thickness of a portion on a radially outer side of a predetermined position in a radial direction around a rotation axis is smaller than a plate thickness of a portion on a radially inner side of the predetermined position,
• a gap is defined between portions on the radially outer side of the steel plate, and
• the rotary electric machine is configured such that an unevenness of an outer peripheral edge of the portions on the radially outer side is deformed and reduced by an inner peripheral surface of the outer cylinder during press-fitting.