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Lubricant System Optimized for Load/Unload

IP.com Disclosure Number: IPCOM000013613D
Original Publication Date: 2000-Feb-01
Included in the Prior Art Database: 2003-Jun-18
Document File: 1 page(s) / 58K

Publishing Venue

IBM

Abstract

The stress of the Load/Unload event puts a higher demand on the tracks at the OD, where the head can contact the disk with the load/unload. To relieve the stress in the contact area, the level of lube is higher at the OD where the head might contact the disk during a landing. By increasing the lube level at the OD of the disk the friction associated with the head landing on the disk is reduced. In the figure below we have an example of a disk with higher levels of lube at the OD. With careful design of the lubricant system this profile can be maintained in the operating file. 1

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Lubricant System Optimized for Load/Unload

   The stress of the Load/Unload event puts a higher demand on the tracks at the
OD, where the head can contact the disk with the load/unload. To relieve the
stress in the contact area, the level of lube is higher at the OD where the head
might contact the disk during a landing.

By increasing the lube level at the OD of the disk the friction associated
with the head landing on the disk is reduced. In the figure below we have an
example of a disk with higher levels of lube at the OD. With careful design
of the lubricant system this profile can be maintained in the operating file.

1

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