Linear motion guide assembly having an increased load bearing ca

Details Linear motion guide assembly having an increased load bearing ca Linear motion guide assembly having an increased load bearing ca

1990-12-20

1992-06-23

Hannon, Thomas R.

Bearings

Linear bearing

Recirculating

384 43, F16C 2906

Patent

active

051237547

ABSTRACT:
A linear motion guide assembly includes an elongated rail having a top surface formed with a pair of first inner guide grooves having a circular arc cross sectional shape and a pair of side surfaces, each of which is formed with a second inner guide groove having a Gothic arch cross sectional shape. A slider unit includes two first and two second endless circulating paths, each of which includes a load path section, a return path section and a pair of curved connecting path sections connecting the corresponding ends of the load and return path sections. Each of the two first endless circulating paths includes a first outer guide groove having a circular arc cross sectional shape located opposite to a corresponding one of the first inner guide grooves, and each of the two second endless circulating paths includes a second outer guide groove having a Gothic arch cross sectional shaped located opposite to a corresponding one of the second inner guide grooves. A series of roller members such as balls are provided in the first endless circulating paths making contact with each of the first inner and outer guide grooves at one point, whereas each of the balls in the second endless circulating paths makes contact with each of the second inner and outer guide grooves at two points. A pair of retaining means retain the balls in the respective guide grooves of the slider. A relatively large load, vertical or lateral, can be securely supported by the assembly.

REFERENCES:
patent: 4433876 (1984-02-01), Mottate
patent: 4616886 (1986-10-01), Teramachi
patent: 4784498 (1988-11-01), Geka et al.

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