Endless linear movement roller bearing

Details Endless linear movement roller bearing Endless linear movement roller bearing

1983-05-31

1985-04-16

Petrakes, John

Cutlery

F16C 2906

Patent

active

045111898

ABSTRACT:
A roller bearing for linear movement of the type wherein the rollers circulate endlessly is provided. A direction changing path is provided in the shape of a circular curve reversing relative to the direction of movement of the bearing, a connecting load track and return hole at each end, for circulating the rollers. The shape of such direction changing path is obtained in such a manner that the projection of the path onto a plane perpendicular to the direction of movement of the bearing is also a circular curve. As a result, width and height of the bearing unit are made optimum so as to achieve an overall most compact bearing unit. Also a preload device and grease are arranged. The compact endless linear movement roller bearing thus obtained is made without any decrease in the bearing load capacity of prior art apparatus the same size. The roller bearing has good rigidity due to the preload device and has very small frictional resistance due to the spatially circularly curved shape of the direction changing path for the rollers.

REFERENCES:
patent: 4302059 (1981-11-01), Teramachi
patent: 4426119 (1984-01-01), Mottate

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