The Timken Company

Richard O Dimit

Dennis L Otto

George G Gilbert

The interior of an antifriction bearing is isolated with an enclosure having a case which fits into the outer race of the bearing and primary and secondary lips which establish a barrier along a sealing surface that is located beyond the inner face of the bearing. The primary lip, which is presented toward the interior of the bearing, does not actually contact the sealing surface, but does have pumping cavities which direct lubricant, that migrates along the sealing surface, back toward the interior of the bearing. The secondary lip projects away from the primary lip and actually contacts the sealing surface. The case, primary lip and sealing lip are all molded from a common polymer as an integral unit. Where the journal around which the bearing fits ends beyond one end of the bearing, a polymer cover may be snapped over the enclosure at that end of the bearing to provide an extra measure of isolation.

Unitary enclosure and cover therefor

A polymer cage for a tapered roller bearing has the usual large and small end rings and bridges which connect the end rings to form pockets which receive the tapered rollers, so that the rollers are spaced properly and further will be held against the cone when the cone is removed from the cup. The cage, however, is constructed such that when it and the rollers are subjected to a jet of high velocity air, the cage and the roller set will not spin rapidly around the cone. This is achieved by detaching one of the bridges from one of the end rings so that the bridge and the rollers adjacent to the bridge will move outwardly during rotation or by providing at least one of the bridges with an outwardly directed rib. In either case, the balance of the cage is disrupted and its wind resistance is increased. As a result, the cage will not revolve at a high velocity when subjected to a jet of air.

Growing community of inventors

Stark County, OH, United States of America

Richard O Dimit