Patent ID: 7428125
Filing Date: 2008-09-23
Classification: F16C,G11B

Abstract:
1. A rotating disk storage device, comprising: a rotating disk recording medium; an actuator head suspension assembly mounted with a head and including a pivot opening that has a step formed by holes of different hole diameters at an adjoining portion thereof, the head pivotally moving about a pivot shaft so as to move over a surface of the rotating disk recording medium; and a pivot bearing assembly including a first roller bearing and a second roller bearing, each of the first and the second roller bearings including an outer race and an inner race with rolling elements interposed therebetween; the first and the second roller bearing being disposed so that, when the first and the second roller bearing are inserted in the pivot opening in the actuator head suspension assembly, the outer race of one roller bearing fits into a hole with the greater hole diameter of the pivot opening, while the outer race of the other roller bearing fits into a hole with the smaller hole diameter of the pivot opening; there being interposed a spacer between the first and the second roller bearing, the spacer being disposed so as to abut on the outer race only of each of the first and the second roller bearings and the spacer abutting on the step in the pivot opening; and the pivot shaft being inserted in the inner race of each of the first and the second roller bearings disposed inside the pivot opening, wherein the pivot shaft is secured to a base and the hole having the smaller hole diameter is provided on a side of the base in the pivot opening.