Linear slide bearing and linear slide table unit employing the s

Details Linear slide bearing and linear slide table unit employing the s Linear slide bearing and linear slide table unit employing the s

1985-12-26

1986-10-14

Levy, Stuart S.

Bearings

Linear bearing

Recirculating

F16C 2906

Patent

active

046168869

ABSTRACT:
A linear slide bearing comprises: a main body of substantially inverted U-shaped cross-section having a horizontal portion and a pair of sleeve portions downwardly extending from both ends of the horizontal portion and defining therebetween a cavity on the lower side of the main body, each sleeve having a raceway groove of substantially semicircular cross-section formed in its inner surface along the longitudinal direction thereof, and each sleeve further having a recirculating ball bore longitudinally extending therethrough; a track shaft having its upper part fitted in the cavity in the main body with a predetermined clearance therebetween, the track shaft being provided, in each of the side surfaces facing the inner surfaces of both sleeve portions of the main body, with a raceway groove of substantially semicircular cross-section extending in the longitudinal direction of the track shaft while confronting the corresponding one of the raceway grooves formed in the inner surfaces of the sleeve portions to constitute a loaded ball region; a pair of covers adapted to be attached to both longitudinal ends of the main body, each cover being provided in its inner surface with guide grooves for providing communication between the recirculating ball bores and loaded ball regions to constitute endless tracks, respectively; and a multiplicity of balls adapted to be recirculated through the endless tracks and to bear a load between the main body and track shaft within the loaded ball regions.

REFERENCES:
patent: 2659637 (1953-11-01), Barr
patent: 2945366 (1960-07-01), Sears
patent: 3560061 (1968-07-01), Shaw, Jr.
patent: 4296974 (1981-10-01), Teramachi
patent: 4312545 (1982-01-01), Blaurock et al.
patent: 4431236 (1984-02-01), Orain
patent: 4472003 (1984-09-01), Osawa

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