A wheel bearing including at least one inner ring. In order to achieve a greater efficiency, the inner ring forms an outer ring of a tripod constant-velocity joint. The wheel bearing may further include an outer ring and two rolling-element rows including a first rolling-element row and a second rolling-element row.

A vehicle wheel bearing device (1) is equipped with a cage (7) in which a pocket (Pt) is formed by adjacent pillar sections (7b) and a base section (7a) that is therebetween, and which retains a ball (8) in the pocket (Pt). Formed in the pillar sections (7b) are a claw portion (7e) and another short claw portion (7g) which project towards adjacent pillar sections, as well as a notched section (7i) cut toward the base section from the distal end radially inward of the claw portions of the pillar sections (7b). When viewed from the axial direction, the shortest length in the one claw portion (7e) to the center of the ball and the shortest length in the other short claw portion (7g) to the center of the ball are different.

A bearing unit for a wheel hub assembly for motor vehicles, the bearing unit having an axis of rotation (X) and having two radially outer raceways, two radially inner raceways, two rows of rolling bodies, the bearing unit having tribological parameters whose values affect the magnitude of the frictional forces between the respective raceways and rolling bodies of the rows of rolling bodies, wherein at least one value of a tribological parameter is minimized or maximized to reduce the magnitude of the frictional forces as a function of the relative position along the axis (X) of a line of action (W) of loads acting on the bearing unit and of the plane of axial symmetry (Z).

A bearing device for a wheel, which has improved axial assembly accuracy of a sealing member by reducing the amount of springback. The bearing device for a wheel comprises an inner sealing member that blocks an inner opening end of an annular space formed by an outer ring and an inner ring. A sealing ring of the inner sealing member has a core metal fitting in the outer ring and an elastic member joined to the core metal. The elastic member has: a pressing part that is pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring; and a non-pressing part that is not pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring, wherein the axial thickness of the pressing part is thinner than the axial thickness of the non-pressing part.

A wheel bearing assembly for rotatably mounting and supporting a wheel to a vehicle body may comprise a wheel hub; at least one inner ring;; an outer ring; and one or more rolling elements. An accommodation space in which a constant velocity joint is accommodated may be formed in a vehicle-body-side end portion of the wheel hub, and one or more recesses for accommodating rolling members of the constant velocity joint may be provided in an inner peripheral surface of the accommodation space along a circumferential direction. A boot fastening ring may be mounted on the wheel hub to mount a rubber boot configured to prevent foreign matters from flowing into the accommodation space. The boot fastening ring may comprise a spline portion on an inner peripheral surface thereof, the spline portion may be coupled to a corresponding spline portion formed on an outer peripheral surface of the wheel hub.

A hub assembly includes an inner rotatable hub having inboard and outboard axial ends, a radial flange extending outwardly from the outboard axial end and connectable with the wheel, an inner circumferential surface, and an opposing outer circumferential surface providing inboard and outboard inner races. An outer hub is disposed about the inner hub, connectable with the chassis and has inboard and outboard axial ends, an outer circumferential surface and an inner circumferential surface. The inner surface provides inboard and outboard outer races and a central surface section extending between the two outer races. First and second sets of rolling elements are disposed between the inner and outer races. One or more sensors are each disposed on the central surface section of the outer hub and are each configured to sense strain within the outer hub generated by the rolling elements.

In a vehicle suspension assembly (1), a connection system (4) between a hub bearing unit (2) and a suspension upright or knuckle (3), including: a radially outer lateral cylindrical surface (16) of a radially outer ring or element (6) of the hub bearing unit, configured for interference coupling with a radially inner lateral cylindrical surface (18) of a reception seat (5) of the suspension upright or knuckle; a pair of, or three, lugs (19) that protrude radially in cantilever fashion from the radially outer ring or element of the hub bearing unit, each being provided with an axial through hole (21); a frontal surface (23) of the suspension upright or knuckle, configured for receiving the lugs (19) in axial abutment; and screws (24) fitted in a through manner through the axial holes of the lugs and screwed into respective threaded holes (25) formed in the suspension upright or knuckle, on the frontal surface (23).

A manufacturing method of a bearing device for a vehicle wheel (1) includes: a pressure adjusting step of enclosing, in a work chamber (Rw), the bearing device for a vehicle wheel (1) to which a sealing member (9) on an outer side is fitted in the work chamber (Rw), and adjusting a pressure in the work chamber (Rw) to a predetermined atmospheric pressure (Pt) according to an environment of a use area of the bearing device for a vehicle wheel (1); and a sealing step of fitting a cover (12) that seals an inner side opening (2a) of an outer ring (2) or an inner side sealing member (6) that seals between the outer ring (2) and a hub ring (3) or an inner ring (4) to the inner side opening (2a) in the work chamber (Rw) in which a pressure has been adjusted.

A spline connection having a hub with a toothing profile on the inner circumference, an axle journal having a toothing profile on an outer circumferential portion, a shoulder for axial support and/or abutment against the hub, and a tensioning device for axially bracing the axle journal with the hub. The hub has a constant toothing profile and the axle journal has a first portion and a second portion with different toothing profiles. The first portion is arranged on the insertion side to be further away from the shoulder than the second portion and has a constant toothing profile with play with respect to the toothing profile of the hub. The second portion is arranged on the shoulder side and has a toothing profile which has reduced tooth spaces compared with the first portion and which is play-free with respect to the toothing profile of the hub.

A wheel hub bearing for motor vehicles, comprising a hub and a bearing unit in turn comprising a radially outer ring, at least one radially inner ring, at least one crown of rolling bodies between the radially outer ring and the radially inner ring, whereas the hub has a radial stiffening. The radial stiffening of the hub has a misalignment (d) respect to a seat, i.e. a distance between a centerline axis (Y) of the seat of the radially inner ring on the hub and a centerline (Z) of the radial stiffening less than or equal to 25% of a length (l) of the seat.