Bearing structure for a hard disk drive device

Details Bearing structure for a hard disk drive device Bearing structure for a hard disk drive device

1998-02-13

1999-08-03

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1702

Patent

active

059332921

ABSTRACT:
The object of the present invention is to provide a hard disk drive device including a compact enough double row bearing apparatus having a shaft of sufficient mechanical rigidity.
In accordance with the present invention, A hard disk drive device comprising a double row bearing apparatus, including a stepped shaft having larger and smaller diameter shaft portions, an inner race way groove provided on the outer peripheral surface of the larger diameter portion, balls interposed between the inner race way groove and an outer race way groove formed on an inner surface of an outer race surrounding the larger diameter portion, and a ball bearing including inner and outer races and balls interposed therebetween. The ball bearing is fitted at its inner race over the smaller diameter portion of the shaft, and the lower end of said larger diameter shaft portion of the double row bearing apparatus is installed and secured on a base of the hard disk drive device.

REFERENCES:
patent: 4713704 (1987-12-01), Voll
patent: 5045738 (1991-09-01), Hishida

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