Rotary electric machine

A rotary electric machine comprising:

• a stator core that is formed in an annular shape;
• a rotor that is supported in a freely rotational state, and is inserted to inner space of the stator core;
• a first housing that houses the stator core and the rotor;
• a second housing that is provided so as to face toward one end portion in an axis direction of the first housing;
• and
• a ring component that is mounted on an outer surface of the stator core;
• wherein
• the ring component includes a cylinder surrounding the outer surface of the stator core, and a flange provided on one end portion in an axis direction of the cylinder;
• the cylinder of the ring component is formed in such a way that a fitting outer surface, which is provided at a side corresponding to the one end portion of the axis direction, is fitted to a fitting inner surface, which is provided at a side corresponding to one end portion of the axis direction of the first housing;
• a clearance value between the fitting outer surface of the cylinder and the fitting inner surface of the first housing is lower than a clearance value between an outer surface, in which the fitting outer surface is excepted, of the cylinder and an inner surface, in which the fitting inner surface is excepted, of the first housing;
• and
• a position in a diameter direction of the stator core facing to the first housing is set by fitting the fitting outer surface of the cylinder to the fitting inner surface of the first housing.