A rolling-element bearing includes first and second concentric ring assemblies. The first ring assembly has a first rolling ring and a first sealing ring abutting axially at a joint, and the first sealing ring supports a first seal element and a second seal element located axially between the first sealing element and the first rolling ring. The second ring assembly has a second rolling ring and a second sealing ring mounted axially at a joint, and rolling elements support the ring assemblies for relative rotation. The first and second seal elements have lips in contact with the second sealing ring, and the lips delimit a first chamber between the first and second sealing rings. The first lip and the second lip extend obliquely toward each other, and a first purging channel extends from the first chamber to an external surface of the first ring assembly.

A sealing member of a rolling bearing is formed in a structure in which an elastic sealing portion is attached to a frame, and the elastic sealing portion may comprise a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame. The first sealing portion may be inserted into and mounted to a coupling groove formed in the second member, and the second sealing portion may comprise an axial sealing lip extending in the axial direction from the frame and a radial sealing lip extending in the radial direction from the frame. The axial sealing lip and the radial sealing lip of the second sealing portion may be positioned adjacent to the first member and may be configured to perform a sealing in a non-contact manner.

In one aspect of the present disclosure, a wheel hub assembly is provided that includes a hub body having an outboard end portion and an inboard end portion, a bearing assembly, and a seal. The seal includes a seal case and a sleeve. The hub body and seal case are rotatable relative to the sleeve. The wheel hub assembly further includes a stop of the bearing assembly configured to resist movement of the sleeve toward the outboard end portion of the hub body as the hub body, bearing assembly, and sleeve are advanced together in an inboard direction along a vehicle spindle. The stop permits the bearing assembly to transfer a force applied in an inboard axial direction against the bearing assembly, such as by tightening of a spindle nut, to the sleeve and urge the sleeve along a vehicle spindle.

To obtain a second assembly, first, an outer ring and first roller cassette of a first assembly are supported by a first support tool and a hub wheel of the first assembly is supported by a second support tool, and then the second support tool is moved upward, so that a roller support surface of the second support tool is introduced to the inside of the first roller cassette in the radial direction. Then, after a first seal member is attached to the outer ring, the second support tool is moved downward in accordance with the re-insertion of a cylindrical portion of the hub wheel into the inner periphery of the outer ring, so that a first inner raceway surface is inside of the first roller cassette in the radial direction while the roller support surface is ejected to the lower side of the first roller cassette.

A retainer is rotationally driven about a axis of a ball bearing, and convex areas having pockets provided therein along a ball pitch circle of the retainer and concave areas between adjacent pockets is detected by a sensor. Grease is discharged according to phases of the convex areas and concave areas in the rotationally driven retainer from a dispenser having grease discharge ports arranged to face an annular space.

A temperature-robust polymer shroud for a roller bearing seal includes a shroud body and an inner diameter leg defining respective portions of a single continuous part. The shroud body encircles a rotation axis of the polymer shroud and extends predominantly in directions orthogonal to the rotation axis from an inner diameter to an outer diameter. The inner diameter leg connects to the shroud body at the inner diameter, encircles the rotation axis, and is oriented at an oblique angle to the rotation axis to extend both (a) radially inward from the inner diameter and (b) axially away from the inner diameter along a first direction parallel to the rotation axis. A roller bearing seal includes a seal case, an elastomer lip, and the temperature-robust polymer shroud.

Bead seals and methods of forming the same are disclosed for bearing assemblies. A bearing assembly may include an inner ring, an outer ring, and a plurality of rolling elements supported therebetween. An annular seal may be disposed between the inner and outer rings, the seal including a metal portion having a mating surface configured to contact a wall of the inner ring. A bead seal may be secured to the mating surface and may extend around a circumference of the seal, the bead seal contacting and forming a seal between the mating surface and the wall of the inner ring. The bead seal may be secured to/within a groove formed in the mating surface. The bead seal may be over-molded on the groove. The disclosed bead seal(s) may reduce or replace other sealants or sealing members in the assembly.

A rolling bearing assembly has a first ring including a first race, a second ring including a second race, and a plurality of rolling elements in rolling contact with the first and second races. The rolling bearing assembly also has a sealing assembly including a first end in contact with the first ring and a second end in contact with the second ring. The sealing assembly has a shield, a sealing element, and a grounding element. The shield has an attachment section in which a free end of the shield is crimped such that it is bent around the sealing element and the grounding element to thereby hold the shield, the sealing element, and the grounding element together with the shield in contact with the first ring and the grounding element in contact with the second ring. The sealing assembly thus creates an electrically conductive path between the first ring and the second ring.

A bearing assembly engaged with an end of a rotatable shaft. The assembly includes a hub defining a first bore extending between a first opening at a first end of the hub and a second opening at a second end of the hub. A bearing sleeve engaged in the first bore defines a second bore. The shaft's end is inserted through a first opening in the second bore. A sealed bearing located between the bearing sleeve and the hub's interior surface enables relative rotation therebetween. A first sealing mechanism seals the first bore's first opening and a second sealing mechanism seals the second openings of both of the first and second bores. The first sealing mechanism includes an L-shaped ring circumscribing the bearing sleeve and a rubber sealing member. The second sealing mechanism includes a hemispherical region and flange secured to the hub by a retaining ring.

A bearing assembly for a vehicle includes an inner race having an interior surface and an exterior surface, an outer race having an interior surface and an exterior surface, a first sealing member disposed between the inner race and the outer race, the first sealing member having a sealing surface adjacent to the interior surface of the outer race, and a second sealing member disposed radially inward of the first sealing member and adjacent to a shoulder surface of the outer race, wherein the first sealing member permits grease bleed-off from the bearing prior to the first sealing member setting against the second sealing member.