ROTOR CORE, ROTOR AND ROTARY ELECTRIC MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a rotor core capable of satisfying both of high-speed rotation and strength reliability, a rotor using the rotor core and a rotary electric machine mounted with the rotor.SOLUTION: The rotary electric machine includes: a rotor core 2; and a rotor 20 with a shaft 5 which is press-fitted into the rotor core 2. The rotor core 2 has a fitting part 8 which comes into contact with the shaft 5. The curvature radius rc at the front tip of the fitting part 8 is larger than a value (Rs-&Dgr;R) which is obtained by subtracting a press-fitting interference &Dgr;R from a radius Rs of the shaft 5.