ROTOR CORE, ROTOR, AND ROTARY ELECTRIC MACHINE

摘要

Provided are a rotor core that simultaneously achieves high-speed rotation and strength reliability, a rotor that uses the rotor core, and a rotary electric machine that is equipped with the rotor. This rotary electric machine is equipped with a rotor (20) that has a rotor core (2) and a shaft (5) that is press-fitted to the rotor core (2). The rotor core (2) has fitting parts (8) to be brought into contact with the shaft (5), wherein the fitting parts (8) have a curvature radius (rc), at the tip of the fitting parts (8), that is greater than a value (Rs-ΔR) that is obtained by subtracting a press-fitting interference (ΔR) from the radius (Rs) of the shaft (5).