Dynamic pressure type fluid bearing device

Details Dynamic pressure type fluid bearing device Dynamic pressure type fluid bearing device

1997-12-19

1999-05-25

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

384448, F16C 1702

Patent

active

059064404

ABSTRACT:
A dynamic pressure type fluid bearing device includes a rotary shaft, a hollow sleeve in which the rotary shaft is rotatably mounted, and at least two sets of dynamic pressure generating grooves formed in either an outer surface of the rotary shaft or an inner surface of the sleeve. In this construction, a value obtained from k.times.sin .beta. is made equal to about 0.1 or ranges from 0.09 to 0.12, where k=d/e, d is a width of the dynamic pressure generating grooves, e is an interval between neighboring dynamic pressure generating grooves, and .beta. is an angle of the dynamic pressure generating grooves relative to a direction of rotation of the rotary shaft.

REFERENCES:
patent: 5141338 (1992-08-01), Asada et al.

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