PURPOSE: To miniaturize a device, to reduce a cost and to reduce a magnetic flux leakage by equipping the magnet fixing a disk to a turntable and making the reverse face side to the face opposing to the disk of the magnet as one part of the driving means driving the turntable with its rotation.

CONSTITUTION: The annular permanent magnet 11 for fixing the disk magnetized in six poles for instance on both sides and a main shaft 12 are fitted by being adhered, etc. on a turntable 10. This main shaft 12 is pivoted freely rotatably on the bearing 14 fixed to a housing 13, and a pair of the motor parts for driving the turntable with rotations formed by the coil 15 fixed to the housing 13 via a printed board 16 and back yoke 17. The device can thus be miniaturized, the effect is big as for the cost and the magnetic flux leakage can be reduced as well.