Dynamic pressure type fluid bearing

Details Dynamic pressure type fluid bearing Dynamic pressure type fluid bearing

1984-05-17

1985-10-15

Levy, Stuart S.

Bearings

Rotary bearing

Fluid bearing

384108, 384113, 384121, F16C 1710

Patent

active

045470812

ABSTRACT:
A dynamic pressure type fluid bearing comprises a housing provided with a cylindrical hole having a cylindrically shaped inner bearing surface for radial load and a bottom bearing surface for thrust load, and a shaft disposed in the cylindrical hole and having a cylindrically shaped outer bearing surface for radial load opposed to and cooperative with the inner bearing surface and an end bearing surface for thrust load opposed to and cooperative with the bottom bearing surface. At least one of the inner bearing surface and the outer bearing surface is provided with grooves for generating a dynamic pressure. A communication hole is provided in the bottom bearing surface and opens to the outside of the housing. The bottom bearing surface has around the communication hole an annular contact bearing surface which contacts the end bearing surface when the bearing is stationary.

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