To eliminate problems, such as losses in durability and liability due to a rotor, which is a magnetic material being scraped at the driving of a motor, and to prevent a force acting on the rotation of the motor shaft, by deforming the rotor shape due to scraping of the rotor.

This motor has a bearing member 8 for receiving one end side of the motor shaft 6 inside the motor, and a biasing spring 9 which is disposed between an inner side pole 2 and the rotor 5 and supports the rotor in a direction of the bearing member from the other end side of the motor shaft for fixing the rotor position. A washer 11, for reducing rotational slide, is interposed between the biasing spring and the rotor so as not to cause bring the biasing spring into direct contact with the rotor.