| 摘要 |
PURPOSE: To prevent deviation of a shaft center line of a rotating part even when centrifugal force of rotation and distribution of temperature changes. CONSTITUTION: A rotor, fit to a shaft in which fitting surfaces 5a and 5b of a rotor body 5 are respectively fit on fitting surfaces 3a and 3b of a rotating shaft 3 and an axial vertical end surface 5c of a rear end contact part 5f adjacent to a rear end fitting part 5g of the rotor body 5 is pressed by a fastening nut 7 so as to press to an axial vertical end surface 3c of the rotational shaft 3, forms a groove 5e between the rear end fitting part 5g and the rear end contact part 5f of the rotor body 5. |
