Rotatable member and method for manufacturing the same

Details Rotatable member and method for manufacturing the same Rotatable member and method for manufacturing the same

2007-04-13

2010-11-16

Charles, Marcus (Department: 3656)

Bearings

Rotary bearing

Plain bearing

C384S283000, C216S050000, C216S083000, C029S895000

Reexamination Certificate

active

07832935

ABSTRACT:
A bearing (100) has a contact surface (110) for mating with a rotatable member. The contact surface has a plurality of crystalline grains (120) distributed at random; a plurality of micro-grooves (130) are formed among the crystalline grains; the micro-grooves communicate with each other thereby forming a net. The micro-grooves accommodate lubricant therein so that when the rotatable member rotates, a sufficient lubrication can be obtained between the bearing and the rotatable member. The bearing is formed by machining and then thermally etching a preform which is formed by powder metallurgy.

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