Bearing structure of rotary machine

Details Bearing structure of rotary machine Bearing structure of rotary machine

1989-09-15

1990-06-19

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384477, 384489, 384492, 384902, 3849071, F16C 3366, F16C 3362, F16C 3376

Patent

active

049348370

ABSTRACT:
This invention provides a bearing structure of a rotary machine wherein a shaft is supported on housings through rolling bearings made of a ceramic material, solid lubricants made of a powder lubricant of CaF.sub.2, Cr.sub.2 O.sub.3, etc., are disposed adjacent to and on both sides of the rolling bearings and seal rings are disposed between the shaft and the housings and on the sides of the solid lubricants. In a ultra-high speed rotary machine, this structure provides a bearing which is excellent in heat-resistance, deformation resistance, wear resistance and durability. The temperature of the bearing structure is raised as a whole to a high temperature without cooling the housings to provide solid lubrication by the solid lubricants, and to reduce drastically frictional resistance. The frictional resistance is further reduced under a high temperature condition to attain low friction and to drastically reduce the wear quantity of the bearing. Moreover, since this bearing structure does not use oil lubrication, an oil lubrication system can be eliminated and hence the occurrence of a fire due to high temperature can be eliminated.

REFERENCES:
patent: 3365253 (1968-01-01), Haller
patent: 3790239 (1974-02-01), Laux et al.
patent: 3963284 (1976-06-01), Bouchard
patent: 4309474 (1982-01-01), Hodes et al.
patent: 4601592 (1986-07-01), Jatczak et al.
patent: 4634300 (1987-01-01), Takebayashi et al.
patent: 4770549 (1988-09-01), Rokkaku et al.
patent: 4848934 (1989-07-01), Blakely et al.

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