A motor comprises a rotor (3) having a permanent magnet (2) outer periphery of which is magnetized into multiple poles and a stator (7) having a plurality of energizing coils (7a) disposed along the outer periphery of the rotor (3). The rotor (3) is rotated by a radially inhomogeneous magnetic field produced when a current flows through the energizing coils (7a). The motor further comprises a bearing (5) on the load side to which one end of the rotor (3) is axially fixed, a bearing (4) on the anti-load side to which the other end of the rotor (3) is radially fixed, and a damping member (12) radially installed on the bearing (4) on the anti-load side.