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RESEARCH PAPERS

The Double Dimple Magnetic Recording Head Suspension and Its Effect on Fly Height Variability

[+] Author and Article Information
J. C. Harrison, K. P. Hanrahan

Applied Magnetics Corporation, 75 Robin Hill Road, Santa Barbara, CA 93117

J. Tribol 117(2), 267-271 (Apr 01, 1995) (5 pages) doi:10.1115/1.2831241 History: Received February 21, 1994; Revised July 11, 1994; Online January 24, 2008

Abstract

A gimbal forming modificaton is presented which, when implemented, leads to significant reduction in air bearing surface (ABS) static attitude and flying height variability within head-gimbal assembly (HGA) populations. The modification requires no additional parts or steps in the manufacture of the suspension assembly. An experimental test of the concept is described, along with the procedure on which it is based. The resulting reduction in product variability is obtained without measurement of (or tailoring to) the initial conditions of the constitutive parts of each HGA. A ≈ 50 percent reduction in static attitude variability, and a ≈ 33 percent reduction in flying variability, was experimentally shown to result from the adoption of the Double Dimple design concept, in all flying degrees of freedom.

Copyright © 1995 by The American Society of Mechanical Engineers
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