Head-Disk Interface Performance With a Starved Liquid Bearing—Analytical Solution to Reynolds Equation in the Near-Contact Regime

[+] Author and Article Information
J. L. Streator

G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Tribol 118(3), 492-497 (Jul 01, 1996) (6 pages) doi:10.1115/1.2831564 History: Received March 08, 1995; Revised June 20, 1995; Online January 24, 2008


Further increase in magnetic recording density requires a reduction in slider flying height. The current study employs the short-bearing approximation to determine analytically the static equilibrium configuration of a slider supported by a starved liquid bearing that operates between ideally smooth surfaces. The solution incorporates rheological behavior based on previously acquired data. The accuracy of the short-bearing approximation is assessed by determining how well the resulting solution satisfies the Reynolds equation. The analysis suggests a means of designing a slider to achieve head/medium spacings in the neighborhood of 20 nm.

Copyright © 1996 by The American Society of Mechanical Engineers
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