Dynamic pressure type bearing device

Details Dynamic pressure type bearing device Dynamic pressure type bearing device

1996-07-18

1997-12-16

Hannon, Thomas R.

Bearings

Rotary bearing

Plain bearing

384909, 384911, F16C 3320

Patent

active

056977093

ABSTRACT:
A dynamic pressure type bearing comprises a sleeve rotatably holding a shaft driven by a motor composed of a rotor and a stator, one or both of the sleeve and the shaft being made of a resin material. The sleeve and/or shaft of a resin material may have a thin film of oil or grease formed on the surface thereof. Preferably, the resin material has load flexible temperture of 120.degree. C. or more, modules of elasticity or bending of 10 GPa or more, and coefficient of linear expansion of 3.times.10.sup.-5 /.degree.C. or less.

REFERENCES:
patent: 4193645 (1980-03-01), Baker et al.
patent: 4319790 (1982-03-01), Thomson
patent: 4875263 (1989-10-01), Furumura
patent: 5118210 (1992-06-01), Ikejiri et al.
patent: 5129739 (1992-07-01), Asai et al.

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