PURPOSE: To promote the mass-productivity and to reduce the cost of a disk driving motor without using any particulard equipment by unnecessitating removal of burrs even when they are formed on a peripheral part of a tap hole for fitting a disk in a hub, and its manufacture.
CONSTITUTION: A recessed part 62 having a depth larger than the tap hole for fitting the disk in diameter to allow burrs to be formed on the peripheral part of the tape hole by forming the tap hole is formed on an open end side of the tap hole 60 of the hub 47, and the recessed part 62 is sealed leaving the burrs as they are. A tap hole for fitting the motor is formed in a frame for holding a stator core of the motor, and a recessed part having a depth larger than the tap hole in diameter to allow burrs to be formed on a peripheral part of the tap hole by forming the tap hole is formed on an open end side of this tap hole, and this recessed part can also be sealed leaving the burrs as they are.
OTA SHINJI
IDE MITSURU
