Bearings – Linear bearing – Recirculating
Patent
1989-05-26
1990-05-29
Footland, Lenard A.
Bearings
Linear bearing
Recirculating
F16C 2906
Patent
active
049290967
ABSTRACT:
An upper ball-retainer for holding the balls in a pair of upper ball rolling grooves formed in the inner surface of the slider main body is made of a synthetic resin and has a rectangular dish shape. Supporting portions protrude axially from axial opposite ends of the ball-retainer, and the supporting portions are respectively inserted into supporting holes formed in the end caps attached to opposite ends of the slider main body so that the upper ball-retainer is accommodated in a space between the upper surface of the guide rail and the inner surface of the slider main body. A ball holding groove having a circular arc cross section is formed in each of the lateral sides of the upper ball-retainer and extends over the whole axial length thereof to hold the balls against the corresponding ball rolling groove of the slider main body. A lip portion of a thin wall is formed at lower end of the ball holding groove and protruding downwardly therefrom. The lip portion is deformable elastically in a direction to expand the ball holding groove and, normally, the lip portion together with the ball rolling groove of the slider main body has a width narrower than the diameter of the ball.
REFERENCES:
patent: 4253709 (1981-03-01), Teramachi
patent: 4647226 (1987-03-01), Mottate
patent: 4778284 (1988-10-01), Teremachi
patent: 4795272 (1989-01-01), Mottate
patent: 4806022 (1989-02-01), Takahiro
Footland Lenard A.
Nippon Seiko Kabushiki Kaisha
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