In a tapered roller bearing, neighboring pillar parts constitute a first engagement allowance in which an inner diameter-side opening width of each of the pockets becomes smaller than a roller diameter at a position of the opening width in a direction of a rotation axis of each of the tapered rollers at at least a part of an inner diameter side of each of the pockets, and constitute a second engagement allowance in which an outer diameter-side opening width of each of the pockets becomes smaller than the roller diameter at a position of the opening width in the direction at at least a part of an outer diameter side of each of the pockets. Bumps are formed on an inner surface of the small diameter ring part in the pockets. Small diameter-side end faces of the tapered rollers facing the bumps are substantially flat surfaces.

A thrust bearing cage including an improved lubrication feature is disclosed. The thrust bearing cage includes a first rim and a second rim with a plurality of crossbars extending therebetween to define rolling element pockets. Each crossbar of the plurality of crossbars includes: a first radial flange extending from the first rim; a second radial flange extending from the second rim; and a medial radial flange connecting the first radial flange and the second radial flange. The medial radial flange is axially offset from the first radial flange and the second radial flange. At least one of the first radial flange, the medial radial flange, or the second radial flange includes a protrusion defining at least one ramped surface. The ramped surface creates a hydrodynamic effect, which guides the thrust bearing cage away from an adjacent surface, and ensures that a lubricated state is maintained.

A bearing cage for a bearing assembly is disclosed herein. The bearing cage includes a first ring, a second ring, and a plurality of crossbars extending between the first ring and the second ring to define a plurality of rolling element pockets. A first terminal end of each of the plurality of crossbars is connected to the first ring and a second terminal end of each of the plurality of crossbars is connected to the second ring. A medial portion of each of the plurality of crossbars is defined between the first terminal end and the second terminal end, and a pair of recesses are defined on opposing circumferential sides of the medial portion.

A hub unit bearing includes: a hub spindle; an inner ring; an outer ring member; a plurality of tapered rollers that are rollably provided between outer circumferential surfaces of the hub spindle and the inner ring and an inner circumferential surface of the outer ring member; a cage including a large-diameter-side annular part, a small-diameter-side annular part; and a sealing device including a metal insert, wherein: the metal insert includes a cylindrical part that is mounted on the inner circumferential surface of the outer ring member and a flange part that radially extends inward from one end of the cylindrical part; and an engaging projection is provided on an outboard side end face of the large-diameter-side annular part of the cage, and an engaging groove engaged with the engaging projection is provided on an inboard side end face of the flange part of the metal insert.

A thrust bearing cage including an improved lubrication feature is disclosed. The thrust bearing cage includes a first rim and a second rim with a plurality of crossbars extending therebetween to define rolling element pockets. Each crossbar of the plurality of crossbars includes: a first radial flange extending from the first rim; a second radial flange extending from the second rim; and a medial radial flange connecting the first radial flange and the second radial flange. The medial radial flange is axially offset from the first radial flange and the second radial flange. At least one of the first radial flange, the medial radial flange, or the second radial flange includes a protrusion defining at least one ramped surface. The ramped surface creates a hydrodynamic effect, which guides the thrust bearing cage away from an adjacent surface, and ensures that a lubricated state is maintained.

A cage segment for a bearing rotatable around an axis being able to receive a plurality of rolling elements configured to travel on two annular raceways respectively on inner and outer rings of the bearing, and including an inner wall that extends circumferentially in the form of a cylinder, the axis of symmetry being the axis (X1), an outer wall that extends circumferentially in the form of a cylinder, the axis of symmetry being the axis (X1), two end portions that are circumferentially opposed, which extend radially with respect to the axis (X1) and which connect together the inner wall and the outer wall, a plurality of successive pockets for receiving the rolling elements, so that two successive pockets are circumferentially delimitated by a radial beam, The radial beam extending radially with respect to the axis (X1), the radial beam comprising two end portions so that one end portion connects with the inner wall and the other end portion connects with the outer wall, The radial beam provides a first recess that extends axially with respect to the axis (X1).

A tapered roller bearing includes an inner ring including, on its outer circumferential surface, an inner raceway surface and including, on an end portion on a second axial side, a cone back face rib portion protruding radially outward, an outer ring including, on its inner circumferential surface, an outer raceway surface, a plurality of tapered rollers disposed between the inner ring and the outer ring, and an annular cage that retains the plurality of tapered rollers spaced from each other in a circumferential direction. The cage includes a small-diameter annular portion, a large-diameter annular portion located on the second axial side relative to the tapered rollers and the outer ring, and a plurality of cage bar portions. The large-diameter annular portion has an oil pocket having a first aperture that is open radially inward and a second aperture that is open toward the outer raceway surface.

A spherical roller bearing having a specific pitch circle diameter (PCD) that includes an outer ring, an inner ring, a plurality of roller elements arranged in first and second roller rows, each roller element providing an axially inner end, and a cage for guiding the roller elements in the first and second roller row, the cage having a plurality of cage pockets. One of the roller elements disposed within each cage pocket. Each respective cage pocket has a bottom that faces the axially inner end of the roller element in each cage pocket. A radially inner end of the cage pocket bottom contacts the axially inner end of the roller element only at a location radially equal to the specific PCD, the cage pocket bottom angled such that the cage pocket bottom abuts the axially inner end of the roller element at an angle such the contact is not flush.

A carrier hub assembly includes a carrier hub and a bearing assembly. The carrier hub includes an end portion having a first face surface and a second face surface. The bearing assembly includes a first bearing positioned on the first face surface and a second bearing positioned on the second face surface. Each bearing includes a pair of washers forming a pair of races, a cage, and a plurality of rolling elements. The bearing assembly further includes a connecting sleeve connecting the first bearing to the second bearing. The connecting sleeve retains the first bearing and the second bearing on the carrier hub.

A carrier hub assembly includes a carrier hub and a bearing assembly. The carrier hub includes an end portion having a first face surface and a second face surface. The bearing assembly includes a first bearing positioned on the first face surface and a second bearing positioned on the second face surface. Each bearing includes a pair of washers forming a pair of races, a cage, and a plurality of rolling elements. The bearing assembly further includes a connecting sleeve connecting the first bearing to the second bearing. The connecting sleeve retains the first bearing and the second bearing on the carrier hub.