Browse Prior Art Database

Magnetic Head With Arrow-Shaped Air Bearing Surface

IP.com Disclosure Number: IPCOM000119450D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 53K

Publishing Venue

IBM

Related People

Balster, CH: AUTHOR [+3]

Abstract

A slider air bearing surface for a direct access recording head assembly is configured with arrow or wing shaped rails. Tapers or steps are placed at the leading edges of the wings oriented to capture and pressurize the air flow brought under the slider from various directions by the combined motion of the disk and access motions of the slider. The configuration of this new air bearing surface design is significantly different than the design of traditional taper flat sliders.

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Magnetic Head With Arrow-Shaped Air Bearing Surface

      A slider air bearing surface for a direct access recording head
assembly is configured with arrow or wing shaped rails. Tapers or
steps are placed at the leading edges of the wings oriented to
capture and pressurize the air flow brought under the slider from
various directions by the combined motion of the disk and access
motions of the slider.  The configuration of this new air bearing
surface design is significantly different than the design of
traditional taper flat sliders.

      The figure illustrates the design of an air bearing surface
configuration which may be formed by molding, etching, or
conventional machining processes.  The air bearing surface consists
of a winged tri-rail structure as shown.  Tapers or steps are placed
at the leading edges of the winged portion of the air bearing
surface.  The tapers or steps result in compression of the gas as it
is viscously dragged under the slider, thus pressurizing the air and
providing lift forces.

      The leading edge of the arrow-shaped air bearing surface is
oriented at an angle to pressurize flow brought under the slider from
a variety of angular directions.  This addresses the skew conditions
created in rotary actuator drives.  The exact shape and angles of the
wings can be varied to optimize the performance of the air bearing
surface given a specific file configuration.  It is desirable to
shape the downstream edges of the wings so th...