Tibor E Tallian

US Patent:

45576130, Dec 10, 1985

Filed:

Mar 9, 1983

Appl. No.:

6/473534

Inventors:

Tibor E. Tallian - Newtown Square PA
Colin G. Hingley - Radnor PA

Assignee:

SKF Industries, Inc. - King of Prussia PA

International Classification:

F16C 3336

US Classification:

384568

Abstract:

A roller bearing having inner and outer raceways and a series of rollers interposed between the raceways characterized by a roller profiled in a predetermined manner to produce a residual frictional moment when the bearing is loaded which tends to control the direction of roller skew. To provide the residual frictional moment, the roller is designed with a profile contour having a predetermined variable curvature and the inner and outer raceways are designed with a constant radius of curvature. Thus designed, the frictional moment distribution on the roller is made to produce a positive skew resulting in decreased heat generation, less bearing friction and longer bearing life. The principle of the invention applies to bearing assemblies having barrel-shaped rollers as well as assemblies having hour-glass shaped rollers. In assemblies with barrel-shaped rollers, the geometric relationships are preferably as follows: R. sub. r2