DISK CENTERING DEVICE

摘要

PURPOSE: A disk centering device is provided to maintain uniform data recording quality between disks by increasing centering precision, and to minimize vibrations of a revolution body with a simple structure, thereby improving productivity of a hard disk drive. CONSTITUTION: A chuck(30) is installed on a base plate(20). A hub unit(40) is detachably combined with the chuck(20), and accumulates plural disks(12). Plural disk pushers(50) slide down on an outer side of the hub unit(40), and have pressurizing members(52) for pressurizing/centering outside diameters of the plural disks(12). A driving unit(60) simultaneously slides the plural disk pushers(50).