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A tapered roller bearing has a rib ring against which the large ends of the tapered rollers for the bearing bear to prevent those rollers from being expelled from the annular space between the tapered raceways. The rib ring includes a porous, yet rigid, core and a jacket which covers the exposed sur

A tapered roller bearing has a rib ring against which the large ends of the tapered rollers for the bearing bear to prevent those rollers from being expelled from the annular space between the tapered raceways. The rib ring includes a porous, yet rigid, core and a jacket which covers the exposed surfaces of the core, except along an abutment face at which the large end faces of the rollers contact the rib ring. Here the pores of the core are exposed. The core at one of its other faces has a groove and the jacket has a port that opens into the groove. Pressurized oil is directed through the port and into the groove, from which it flows through the pores of the core and emerges at the abutment surface where it reduces friction between the abutment surface and the roller end faces.

대표청구항 ▼

A tapered roller bearing assembly comprising: a first race having a tapered raceway: a second race having a raceway located opposite the raceway of the first race; tapered rollers arranged in a circular row between the two races and contacting the raceways so as to roll along the raceways when one o

A tapered roller bearing assembly comprising: a first race having a tapered raceway: a second race having a raceway located opposite the raceway of the first race; tapered rollers arranged in a circular row between the two races and contacting the raceways so as to roll along the raceways when one of the races turns relative to the other race; a rib ring mounted in a generally fixed position with respect to one of the races and having an abutment surface against which the large ends of the tapered rollers bear so as to prevent the rollers from being expelled from the space between the two raceways, the rib ring including a porous material, the pores of which are exposed along the abutment surface; and means for introducing fluent lubricant into the porous material of the rib ring remote from the abutment surface, so that the lubricant flows through the pores of that material and emerges at the abutment surface where it reduces friction between the abutment surface and the large end faces of the tapered rollers.