A wheelset bearing for a rail vehicle includes a rolling bearing assembly (7) with three bearing rings (4, 8, 9), specifically two inner rings (4, 8) provided for connection to a wheelset shaft (2) and one outer ring (9) provided for connection to a housing (6). The rolling bearing assembly (7) is designed as a quadruple-row angular contact ball bearing in an O arrangement, and two rolling element rows (16, 17) are provided contacting a first inner ring (4) in order to absorb axial forces in a first direction and two rolling element rows (18, 19) are provided contacting a second inner ring (8) in order to absorb forces in the opposite axial direction. A rail vehicle with such an arrangement is also provided.

The bicycle hub assembly includes a hub axle, a hub body, a bearing unit, a lock member, and a tool engagement member. The bearing unit is configured to rotatably support the hub body around the hub axle with respect to the rotational center axis. The bearing unit includes an outer race, an inner race and a plurality of rolling members. The lock member prevents the inner race of the bearing unit from rotating relative to the hub axle. The lock member has an outer peripheral surface. The tool engagement member is configured to rotate the inner race of the bearing unit relative to the hub axle. The tool engagement member has an inner peripheral surface. The inner peripheral surface of the tool engagement member is disposed radially outwardly relative to the outer peripheral surface of the lock member.

A wheel bearing assembly is disclosed that a bearing ring defining a first splined portion, a joint element including a second splined portion configured to matingly engage with the first splined portion, and a first retention assembly arranged radially outward from the first and second splined portions. The first retention assembly is configured to axially retain the bearing ring with the joint element.

Axial relative movement of an auxiliary member (30) and a hub body (22z) is performed, the hub body (22z) and an inner race (21) are combined with each other in an axial direction, and a part of the hub body (22z) deformed by a blade (33) of the auxiliary member (30) is disposed inside an engagement concave portion (26) of the inner race (21).

A method of manufacturing a wheel hub bearing unit includes providing a bearing ring having at least one raceway surface, the bearing ring preferably being a bearing outer ring which is preferably formed of a steel having a carbon content of between about 0.55% by weight and 0.60% by weight. The bearing ring is carbonitrided within a furnace having an enclosed atmosphere containing ammonia gas. The bearing ring is then tempered by heating the ring to at least five hundred degrees Celsius (500° F.). Next, the induction hardening the at least one raceway surface of the ring is induction hardened, preferably by means of special inductor coil. Finally, the raceway surface(s) of the ring is machined to desired final dimensions and surface finish.

A wheel bearing arrangement for a disconnectable wheel assembly which includes a drive shaft that is adapted to be drivingly engaged with or disengaged from a wheel supporting flange and an assembly method are provided. The arrangement includes first and second deep groove ball bearings located between the shaft and the flange. The first inner ring of the first bearing is axially positioned by a shaft shoulder on the shaft and the first outer ring is axially positioned by a first flange shoulder on the flange. The second outer ring of the second bearing has an interference fit with the flange in a radial direction. For some options, a spacer axially separates the first and second inner rings. A nut is engaged to an end of the shaft and clamps the second inner ring, the spacer, and the first inner ring to the shaft shoulder. Alternate arrangements are also provided.

An axle assembly for a driving wheel of a vehicle allows a wheel-side joint and a shaft to be rotated separately from a boot while driving so as to prevent generation of friction noise of the boot. The axle assembly includes the shaft rotated by receiving driving force from a powertrain; an axle housing disposed to pass through a center of a steering knuckle connected to a steering apparatus; a wheel bearing mounted between the steering knuckle and the axle housing; a joint bearing mounted on an outer part of the shaft; and a boot unit configured to have a first end coupled to an outer race of the joint bearing and a second end coupled to an outer race of the wheel bearing so as to form a space filled with a lubricant outside the shaft.

A wheel bearing device has a vehicle-body-mounting flange 5b with a plurality of ears 10 discontinuously formed in a circumferential direction on an outer circumferential surface of the outer member 5. An outer circumferential surface 11 on the outer side of the outer member is tapered and formed such that a diameter of the outer member gradually decreases in a direction to an outer side. Ridges 16 protrude from a fitting surface 12 toward the outside in a radial direction. The ridges 16 are formed between the plurality of ears 10. The ridges 16 are forged to smoothly connect to the outer circumferential surfaces of the plurality of ears 10. Ribs 15 are forged on inner-side outer circumferential surfaces of the plurality of ears 10.

A roller bearing module for a vehicle hub module having an outboard roller bearing and an inboard roller bearing. The roller bearing module provides a spacer coupling the outboard roller bearing to the inboard roller bearing. The spacer is arranged in an axial direction between the outboard roller bearing and the inboard roller bearing. The roller bearing module includes a first sealing structure arranged at an outwards facing side of the outboard roller bearing. The roller bearing module further includes a second sealing structure arranged at an inwards facing side of the inboard roller bearing.

A rolling-element bearing unit for a wheel bearing assembly of a vehicle includes a first rolling-element bearing having an outer bearing ring and an inner bearing ring and rolling elements disposed between the outer bearing ring and the inner bearing ring and a first seal element having a seal-element base body having a first support member mounted to an axial outer surface of the inner bearing ring and a first seal lip pressed against a radial end surface of the outer bearing ring to hold the outer bearing ring in position relative to the inner bearing ring. Also a wheel bearing assembly including two such rolling element bearing units.