MOTOR WITH FACING CIRCUMFERENTIAL SURFACE

PROBLEM TO BE SOLVED: To constitute a low-cost thrust bearing mechanism, and to prevent dust that is produced from the thrust bearing mechanism from infiltrating a radial bearing mechanism. SOLUTION: A drive magnet 5 is structured with split magnetizing parts 51, 52, having magnetic centers C1, C2 at symmetrical positions to the magnetic center C0 of an armature core 22, to make the drive magnet 5 and armature core 22 rotate relative to each other by the electromagnetic action between both components. By relatively restraining shift in the axial direction by the magnetic actions between the split magnetizing parts 51, 52 and the armature core 22, electromagnetic action for rotating and driving a rotor assembly 1 is made to occur, and the rocking of the rotor assembly 1 is the thrust direction can be restrained by the magnetic action between a plurality of the split magnetizing parts 41, 52 and the armature core 22.