Linear motion rolling guide unit

Details Linear motion rolling guide unit Linear motion rolling guide unit

1991-08-26

1992-12-22

Footland, Lenard A.

Bearings

Linear bearing

Recirculating

F16C 2906

Patent

active

051729822

ABSTRACT:
A linear motion rolling guide unit comprising a track rail of substantially rectangularly columnar shape and a slider slidably movable on said track rail, said track rail being formed with arcuate raceway grooves at both right and left shoulders of sidewall surfaces thereof, said slider being formed with an arcuate raceway groove on an inner peripheral surface thereof opposed to the arcuate raceway grooves of said track rail, balls being arranged between said arcuate raceway grooves. Said track rail has bottom mounting portions, relieves are formed longitudinally at both sides of the bottom mounting portions, a relief groove is longitudinally at an axially central position of the track rail so that the width of bottom mounting portions thereof interposed between relieves is smaller than the diameter of the mounting hole of said track rail so as to improve its moving accuracy while maintaining a parallelism between the track rail and an opponent member.

REFERENCES:
patent: 4773770 (1988-09-01), Osawa et al.
patent: 4953988 (1990-09-01), Tsukada
patent: 4988215 (1991-01-01), Osawa
patent: 5011300 (1991-04-01), Teramachi

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