Patent ID: 7929253

Claim:
A hard disk drive, comprising: a base plate; at least one hard disk rotatably interconnected to the base plate; an actuator assembly mounted for rotation relative to the at least one hard disk, the actuator assembly comprising at least one actuator arm interconnected to a block, the actuator arm having a distal end with a transducer mounted thereto; a stationary shaft mounted to the base plate; and a bearing assembly operatively associated with the shaft and the block whereby the block is rotatably interconnected to the shaft, the bearing assembly comprising a plurality of ball bearings interposed between the shaft and the block forming an annular pattern characterized by a first set of two or more ball bearings uniformly spaced apart by a first annular spacing and a second set of ball bearings uniformly spaced apart by the first annular spacing, the first set of ball bearings and the second set of ball bearings being annularly spaced from each other at a second annular spacing that is greater than the first annular spacing.