Etched/lubricated swage balls for use in DASD suspension-arm att

Details Etched/lubricated swage balls for use in DASD suspension-arm att Etched/lubricated swage balls for use in DASD suspension-arm att

1997-03-12

1999-03-09

Breneman, R. Bruce

Etching a substrate: processes

Nongaseous phase etching of substrate

Etching inorganic substrate

216 22, 216102, 216103, 134 41, C23F 100

Patent

active

058795782

ABSTRACT:
An etched, lubricated swage ball for use in swaging a head gimbal assembly to an actuator arm in a magnetic disk drive, and a method for making the same. The present invention discloses a lubricating system for swage balls used in a disk drive system which is free from transferrable aluminum oxide, other hard materials or excess solid lubricant which could be deposited on the clean disk surface during operation. The swage balls are first pretreated by cleaning and then etching to remove residual alumina from the surface of the swage balls. The cleaned, etched swage balls are then lubricated in a fluorocarbon lubricating system, thereby producing an etched, lubricated swage ball which is cleaner than that found in the prior art.

REFERENCES:
patent: 3831265 (1974-08-01), Louzon et al.
patent: 5100714 (1992-03-01), Zsamboky
patent: 5229899 (1993-07-01), Brown et al.
"Lubricant-Stablizing Structure For Magnetic Disks", IBM Technical Disclosure Bulletin, vol. 28 No. 2, Jul. 1985, pp. 796-797.

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