Characteristics of Air Bearing Suction Force in Magnetic Recording Disks

[+] Author and Article Information
Jih-Ping Peng, Cal E. Hardie

Seagate Technology, 7801 Computer Ave. S., Bloomington, MN 55435

J. Tribol 118(3), 549-554 (Jul 01, 1996) (6 pages) doi:10.1115/1.2831573 History: Received March 06, 1995; Revised July 17, 1995; Online January 24, 2008


Some fundamental characteristics of the subambient pressure air bearing suction force were investigated analytically and numerically. The performance of air bearing suction force is strongly determined by the cavity bearing number, in which the cavity region recess depth is used as the characteristic film thickness. Although the optimal recess depth for maximum, suction force varies for different operation conditions, the optimal cavity bearing number can be found in a wide range of applications. The analytical model was confirmed by a finite element analysis. Examples of different disc velocities, slider dimensions, and ambient pressure effect were presented.

Copyright © 1996 by The American Society of Mechanical Engineers
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