A wheel bearing assembly includes a wheel hub, at least one inner ring, an outer ring, and one or more rolling elements. An accommodation space may be formed inward of a vehicle-body-side end portion of the wheel hub to accommodate a constant velocity joint, and a plurality of recesses for accommodating rotating elements of the constant velocity joint are formed on an inner peripheral surface of the accommodation space to be spaced apart from each other along a circumferential direction. A first heat-treated hardened portion may be formed on the inner peripheral surface of the accommodation space, and may be formed to have portions with which the rotating elements of the constant velocity joint is brought into contact. A second heat-treated hardened portion may formed on an outer peripheral surface of the wheel hub. The first and second heat-treated hardened portions may not overlap each other.

The present invention addresses the problem of providing a method for measuring axial clearance of a wheel bearing device, with which it is possible to make a high-precision measurement of negative axial clearance. This method comprises: a step (S02) for press-fitting an inner race (4); a first negative axial clearance measurement step (S03); a swaging step (S04); an inner-race press-in amount measurement step (S05); a first inner-race outer-diameter increment measurement step (S06); a second inner-race outer-diameter increment calculation step (S07); an outer-diameter increment difference calculation step (S08); a first axial clearance decrement calculation step (S09); a second axial clearance decrement calculation step (S10); a third axial clearance decrement calculation step (S11); and a second negative axial clearance calculation step (S12).

A hub bearing module for a lightweight suspension upright or knuckle of a vehicle, the hub bearing module including a wheel bearing and a bearing connection interface to the suspension upright or knuckle, the bearing connection interface being arranged coaxial with the rolling bearing and including a first sleeve element and a second sleeve element arranged radially outside the first sleeve element and including a composite, preferably BMC (Bulk Molding Compound) annular body having a radially inner lateral surface mechanically coupled to the first sleeve element and a radially outer lateral surface configured to mechanically and chemically couple with the suspension upright or knuckle.

A hub structure includes an axle housing, a hub having an insertion hole in a vehicle width direction through which the axle housing is inserted, and an inner bearing disposed between the hub and the axle housing in the insertion hole and rotatably supporting the hub with respect to the axle housing, and an oil seal disposed between the hub and the axle housing in the insertion hole on an inner side relative to the inner bearing in the vehicle width direction. A spacer is provided between the inner bearing and the oil seal in the insertion hole. The spacer has an outer end surface that is contactable with an inner end surface of an inner race of the inner bearing.

A wheel is assembled and fitted with a frame of the scooter, and includes a bearing support, a hub, at least one bearing and a hollow area. The bearing support includes an inner surface facing towards a rotation center of the wheel. Each bearing includes an outer ring and an inner ring, the outer ring is fixedly connected to the hub, and the inner ring and the frame are fixedly connected to the bearing support, respectively. The hollow area is surrounded by the inner surface.

A packaged bearing unit is disclosed including an outer surface for receiving an aircraft landing gear wheel and an inner surface for receiving an axle. The unit may include first and second spaced-apart sets of tapered roller bearings, held between inner and outer raceways. There may be a bearing setting spacer which can be used when setting and pre-loading the bearings. The bearing unit may be a sealed unit which includes a pre-set amount of lubricant (grease) for lubricating the bearings. One or more sensors may be retained in a void between the sets of bearings. The bearing unit may remain fixed to the axle when the wheel is removed. The bearing unit may be serviced less frequently than the wheels, and may thus have a longer lifetime, possibly comparable with the lifetime of the major components of the landing gear.

A cage of an angular ball bearing includes, with respect to a plurality of balls arranged between an outer member and an inner member, an annular portion positioned on one side in an axial direction of the angular ball bearing, and a plurality of pillar portions provided to extend from the annular portion to the other side in the axial direction. The pillar portions include a first flat surface portion contactable with the balls on one side in a circumferential direction of the angular ball bearing, and a second flat surface portion contactable with the balls on the other side in the circumferential direction and parallel to the first flat surface portion.

A method for assembling a ring by shrinking the ring onto a shrink-fitting surface of a part, the shrink-fitting surface being turned radially away from a reference axis, the part having a free upper end and an inner wall extending around the reference axis turned radially toward the reference axis and extending axially while delimiting at least part of an axial cavity. The method including the steps of forming, on the inner wall, splines extending axially; shrinking the ring on the part so that a lower transverse face of the ring comes into abutment against a shoulder of the part. After the step of forming the splines and prior to the step of shrinking the ring onto the part, radial elastoplastic expansion of an upper portion of the part results in a widening of the shrink-fitting surface and of a portion of the splines.

A bearing unit having an axis of rotation (X) for a wheel hub assembly for motor vehicles includes stationary radially outer ring, a rotatable wheel hub or first radially inner ring, a rotatable second radially inner ring having an axially external first axial contact edge, an axially internal second axial contact edge having a radially external first contact surface configured to abut a surface of the first radially inner ring, a radially internal second contact surface, and a relief groove interposed radially between the first contact surface and the second contact surface, two rows of rolling bodies interposed between the radially outer ring and the second radially inner ring, and a joint including a bell, the second contact surface contacting a surface of the bell and axial locks the radially inner ring, and the relief groove reducing contact between the second contact edge and the surface of the bell.

A wheel hub includes a one-piece hub base body configured to surround at least a portion of a rolling-element bearing, the base body having a first axial end region configured to attach to a wheel adapter and/or to a wheel and a second axial end region axially opposite the first axial end region. An annular reinforcing body, which may be a metal band, is mounted on a radially outer surface of the second axial end region and connected to the radially outer surface at a joint.