Track surface of a roller bearing for an infinite rectilinear mo

Details Track surface of a roller bearing for an infinite rectilinear mo Track surface of a roller bearing for an infinite rectilinear mo

1985-09-05

1987-01-06

Levy, Stuart S.

Bearings

Linear bearing

Recirculating

384 45, F16C 2906

Patent

active

046342958

ABSTRACT:
There is a track surface of a roller bearing for an infinite rectilinear motion in which many rollers roll in keeping with the adjacent relation with one another in an infinite circulating passage constituted such that both ends of a rectilinear load track and a return passage are coupled by direction turning passages, wherein slope ranges each consisting of a gentle slope range formed subsequently to a rectilinear load track surface and a steep slope range steeper than the gentle slope range and formed subsequently thereto are formed in both end portions of the load track surface and are continued to the direction turning passages on both ends of the load track, and concave portions which become narrow toward the longitudinal central portion of the load track surface are formed in the load track surface from both end portions thereof toward the slope ranges. The track surface may be formed as a U-shaped groove and the rolling axes of the adjacent rollers are parallel. Or, the track surface may be formed as a right-angled V-shaped groove and the adjacent rollers are cross rollers, and the length of the concave portion is preferably two or more times larger than the roller diameter. With this arrangements, the elastic deformation, running deformation, and slide resistance can be reduced.

REFERENCES:
patent: 3410614 (1968-11-01), Shaw, Jr.
patent: 3467447 (1969-09-01), Newman
patent: 3797897 (1974-03-01), Schaeffler
patent: 4497522 (1985-02-01), Szenger

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