Linear ball bearing for carriage of machine tool

Details Linear ball bearing for carriage of machine tool Linear ball bearing for carriage of machine tool

1986-11-21

1988-03-08

Footland, Lenard A.

Bearings

Linear bearing

Recirculating

F16C 2906

Patent

active

047296690

ABSTRACT:
A linear ball bearing for a carriage in a machine tool has a support with a pair of raceways which oppose a corresponding pair of raceways formed in the carriage. Two endless rows of balls are arranged to circulate in adjacent planes, with the loaded balls rolling between the opposing raceways. One or two rails are fastened to the support for guiding the loaded balls outwardly of the support. The loaded balls of one row mesh in the interstices of the loaded balls of the other row. Each rail has a guiding web for laterally guiding the loaded balls and at least one retaining web for partly encompassing the loaded balls. The longitudinal gaps between the rail and the support have widths less than the ball diameter, thereby blocking the balls from falling out of the support when the bearing is disassembled.

REFERENCES:
patent: 4497522 (1985-02-01), Szenger
patent: 4552416 (1985-11-01), Lehmann et al.
patent: 4615569 (1986-10-01), Hirata

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