Rotating electric machine

A rotating electric machine comprising:

• a stator core formed in an annular shape;
• a stator frame having a flange and having a straight shape on an inner diameter side, the stator frame being retained by fitting to an outer circumferential surface of the stator core with a predetermined interference;
• and
• a water jacket fitted and fixed to both ends, on a base side where the flange is located and a distal end side of a cylindrical portion of the stator frame on an outer circumference of the cylindrical portion, wherein
• a passage of a stator cooling refrigerant is formed by the stator frame and the water jacket,
• the stator frame has a difference between diameter on the base side and a diameter on the distal end side, the diameter on the base side being formed to be larger, and
• the stator frame and the water jacket are sealed by press fitting and welding on the base side and the distal end side of the stator frame,
• wherein the water jacket comprises a base side wall and a distal end side wall extending in a radial direction, and
• wherein:
• a thickness of the base side wall in an axial direction increases with increasing distance from an axial center of the water jacket;
• or
• a thickness of the distal end side wall in the axial direction increases with increasing distance from the axial center of the water jacket;
• or
• a slope with respect to the axial direction of an outer diameter side of the stator frame on the distal end side is greater than a slope of the outer diameter side of the stator frame on the base side.