SPINDLE MOTOR, HARD DISK DRIVE WITH THE SAME, AND DISK BALANCING METHOD USING THE SPINDLE MOTOR

摘要

A spindle motor, an HDD(Hard Disc Drive) with the same, and a disc balancing method using the spindle motor are provided to satisfy disc balancing. A motor shaft(120) is a rotary center of a disc(105). A motor hub(115) fixedly mounts the disc(105), and rotates at high speed centering around the motor shaft(120). One side part of the motor hub(115) is intentionally removed so that the motor hub(115) has eccentricity quantity for the rotary center. The amplitude of the eccentricity quantity of the motor hub(115) is identical to the amplitude of the eccentricity quantity of the disc(105) mounted in the motor hub(115).