Dynamic pressure bearing and method of manufacturing the same

Details Dynamic pressure bearing and method of manufacturing the same Dynamic pressure bearing and method of manufacturing the same

2005-06-14

2005-06-14

Compton, Eric (Department: 3726)

Metal working

Method of mechanical manufacture

Process for making bearing or component thereof

C029S898020

Reexamination Certificate

active

06904682

ABSTRACT:
In a dynamic pressure bearing, when a step portion (1a) is formed on the inner peripheral surface (1b) of a sleeve (1) and radial dynamic pressure grooves (3) are formed on the inner peripheral surface of the step portion, the width (L) in the axial direction of the dynamic pressure grooves is set to be slightly smaller than the width (D) in the axial direction of the step portion. The dynamic pressure grooves of the sleeve are formed by electrolytic etching.

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