A motor comprising: a stator which comprises an annular stator core, and a plurality of teeth protruding radially inward from an inner circumferential surface of the stator core; coils which are wound around the teeth; a shaft which rotates inside the stator core in a radial direction thereof; a rotor core which is affixed to the shaft and radially centered on a rotation axis (Cl) of the shaft; a plurality of permanent magnets disposed on an outer peripheral surface of the rotor core; and projecting poles which are formed to project radially outward between the permanent magnets adjacent to each other in a circumferential direction of the outer peripheral surface of the rotor core and with which circumferential side surfaces of the permanent magnets are brought into contact, and each projecting pole is formed such that both sides surfaces facing each other in the circumferential direction are parallel to each other, wherein the stator is formed by stacking a plurality of electromagnetic steel sheets (Pt) in a direction of the rotation axis of the shaft, and at least one end portion of both ends of each permanent magnet in the direction of the rotation axis projects further than an end portion of the rotor core in the direction of the rotation axis, wherein the motor is characterized in that: for each permanent magnet, both circumferential side surfaces are formed by a projecting pole contact surface that contacts one of the side surfaces of one of the projecting poles and an inclined surface that is positioned further outward in the radial direction than the projecting pole contact surface, the inclined surface being formed to be oblique and flat such that the inclined surface gradually separates from the projecting pole from the radially outer end of the projecting pole contact surface toward an outer peripheral surface of the permanent magnet, and the inclined surfaces on both sides of the permanent magnet are parallel to a straight line connecting a circumferential intermediate portion of the permanent magnet and an axial center of the shaft and are parallel to each other. a stator which comprises an annular stator core, and a plurality of teeth protruding radially inward from an inner circumferential surface of the stator core; coils which are wound around the teeth; a shaft which rotates inside the stator core in a radial direction thereof; a rotor core which is affixed to the shaft and radially centered on a rotation axis (Cl) of the shaft; a plurality of permanent magnets disposed on an outer peripheral surface of the rotor core; and projecting poles which are formed to project radially outward between the permanent magnets adjacent to each other in a circumferential direction of the outer peripheral surface of the rotor core and with which circumferential side surfaces of the permanent magnets are brought into contact, and each projecting pole is formed such that both sides surfaces facing each other in the circumferential direction are parallel to each other, wherein the stator is formed by stacking a plurality of electromagnetic steel sheets (Pt) in a direction of the rotation axis of the shaft, and at least one end portion of both ends of each permanent magnet in the direction of the rotation axis projects further than an end portion of the rotor core in the direction of the rotation axis, wherein the motor is characterized in that: for each permanent magnet, both circumferential side surfaces are formed by a projecting pole contact surface that contacts one of the side surfaces of one of the projecting poles and an inclined surface that is positioned further outward in the radial direction than the projecting pole contact surface, the inclined surface being formed to be oblique and flat such that the inclined surface gradually separates from the projecting pole from the radially outer end of the projecting pole contact surface toward an outer peripheral surface of the permanent magnet, and the inclined surfaces on both sides of the permanent magnet are parallel to a straight line connecting a circumferential intermediate portion of the permanent magnet and an axial center of the shaft and are parallel to each other.