DISK DRIVE, HEAD ASSEMBLY, PIVOT BEARING

摘要

PROBLEM TO BE SOLVED: To provide a disk drive in which a head assembly can efficiently, reliably and highly accurately balanced, and to provide a head assembly or the like. SOLUTION: In a hard disk drive, a head assembly 13 to drive a magnetic head 33 for reading/writing data from/in a recording disk has a constitution such that the sleeve 21 of a pivot member 20 which swivelably supports the head assembly 13 is equipped with a flange part overhanging towards the circumferential side and flat surface parts 41A and 41B for adjusting the balance of the center of gravity of the head assembly 13 are formed on the circumferential surface of the flange part.