HUB FOR SPINDLE MOTOR AND SPINDLE MOTOR HAVING THE SAME

摘要

PURPOSE: A hub for spindle motor and a spindle motor having the same are provided to implement elaborate balance by forming a balance control groove in the radiation direction of the hub. CONSTITUTION: A rotation member is inserted into a rotation member insertion hole. A disk mounting part (12) mounts a disk. A balance control groove (13) is a circular form. A balance control member (14) corresponds to the balance control groove. The balance control member is combined with the balance control groove.