SPINDLE MOTOR ASSEMBLY FOR A HARD DISK DRIVE HAVING A BALANCE TUBE AND METHOD FOR ASSEMBLING THE SPINDLE MOTOR ASSEMBLY

摘要

PURPOSE: A spindle motor assembly for a hard disk drive having a balance tube and method for assembling the spindle motor assembly is provided, which has a balance tube for decreasing a manufacturing cost. CONSTITUTION: The spindle motor assembly for a hard disk drive having a balance tube comprises: a hub (26); a motor (30) for rotating the hub (26); a first disk (12) to be coupled to the hub (26); a second disk to be coupled to the hub (26); a spacer (40) for separating the first disk (12) into the second disk; and a tube (46) which a moving material coupled to the spacer (40) is inserted, wherein the tub is located in a groove of the spacer. Thereby, it is possible to decrease the time of manufacturing progress and the manufacturing cost.