Recirculating-ball linear bearing

Details Recirculating-ball linear bearing Recirculating-ball linear bearing

1983-03-02

1984-01-31

Petrakes, John

Cutlery

F16C 2904

Patent

active

044286279

ABSTRACT:
A linear bearing capable of withstanding the load acting in all of downward, upward, and opposite lateral directions as it rolls along a guide rail of I-shaped cross section. Included is a bearing body of inverted-U-shaped cross section having a pair of bearing races of recumbent-Y-shaped cross section secured to its opposed inner surfaces. Each bearing race has formed thereon a pair of ball raceways of arcuate cross section opposed to a like pair of ball raceways on the head of the guide rail. The bearing body and the bearing races define therebetween two pairs of ball return passageways of circular cross section extending parallel to the two pairs of ball raceways on the bearing races. Fastened to the opposite ends of the bearing body and the bearing races, a pair of segmented end covers have formed therein hairpin grooves each intercommunicating one of the raceways on the bearing races and one adjacent return passageway in order to allow recirculation of a group of antifriction balls. A pair of cages extend along the respective pairs of raceways on the bearing races for rollably holding the antifriction balls thereon. The cages are slotted to permit the balls to partly project therethrough into rolling engagement with the raceways on the guide rail.

REFERENCES:
patent: 3897982 (1975-08-01), Teramachi
patent: 4253709 (1981-03-01), Teramachi
patent: 4296974 (1981-10-01), Teramachi
patent: 4310202 (1982-01-01), Teramachi
patent: 4361366 (1982-11-01), Uchiyama
patent: 4363526 (1982-12-01), Teramachi

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