Bearing unit, production method therefor and spindle motor

Details Bearing unit, production method therefor and spindle motor Bearing unit, production method therefor and spindle motor

2005-02-08

2005-02-08

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S133000, C384S279000, C029S898020

Reexamination Certificate

active

06851859

ABSTRACT:
A bearing unit comprises a bearing60formed of a sintered metal in which a magnetized magnetic powder is dispersed in its matrix and at least pores exposed on a bearing surface thereof are sealed by impregnation with a resin; a non-magnetic housing90accommodating the bearing60; and a lubricating fluid M made of a magnetic fluid.

REFERENCES:
patent: 5645355 (1997-07-01), Tokushima et al.
patent: 5821655 (1998-10-01), Tokushima et al.
patent: 6105250 (2000-08-01), Tanaka et al.
patent: 20020037118 (2002-03-01), Miyasaka
patent: 07-012127 (1995-01-01), None
patent: 11-013765 (1999-01-01), None

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