A bearing device for a shaft has at least two axially spaced-apart, radial anti-friction bearings with rolling bodies. In each of the anti-friction bearings, an inner race is formed for the rolling bodies on an inner bearing element which is connected fixedly to the shaft. An outer race is formed for the rolling bodies on an outer bearing sleeve having at least two bearing sleeve elements which are guided coaxially with respect to one another in a guide device. Each of the anti-friction bearings is assigned a separate bearing sleeve element with in each case one anti-friction bearing running surface. The guide device converts a rotation of at least one of the bearing sleeve elements about the shaft longitudinal axis into a spacing change of the two bearing sleeve elements. The axial spacing between the bearing sleeve elements can be adjusted and/or fixed and/or prestressed with spring element.

A wheel bearing includes a constant velocity universal joint and a wheel bearing. The wheel bearing is separably coupled to the constant velocity universal joint with a screw fastening structure, in which a stem section of an outer joint member of the constant velocity universal joint is fitted to an inner diameter portion of the hub wheel. Projecting portions extending in an axial direction are formed on the stem section of the outer joint member, and depressed portions having an interference with respect to the projecting portions are formed on the hub wheel. The stem section of the outer joint member is press-fitted to the hub wheel, and a shape of the projecting portions is transferred to the other, to thereby provide a projection and depression fitting structure in which the projecting portions and the depressed portions are in close contact at an entire fitting contact portion therebetween.

A sealing device for a hub bearing assembly, equipped with a rolling bearing unit, a circular metal shield, a radially extending end wall and a double cylindrical lateral wall fixed to and practically orthogonal to the end wall, formed by a first cylindrical lateral wall and a second cylindrical lateral wall. The metal shield is angularly coupled to a radially outer ring of the bearing. The second cylindrical lateral wall is connected in a fixed manner to a radially outer edge adapted to cover an axially inner surface of the terminal edge that is potentially subject to oxidation phenomena with the consequent formation of a layer of rust.

The present invention is intended to provide a machine component composed of metal and rubber that results in no increase of material costs for an adhesive or increase of manufacturing costs for metal molding, causes no contamination of the metal mold or generates no foreign matter on the metal mold due to adhesion of the adhesive at the time of molding, causes no failure by separation of the adhesive from a fitting portion at the time of fitting the metal component, and is clean and favorable in appearance. A machine component 1 composed of metal and rubber is formed by applying a thermoset resin adhesive A to a surface of a metal component 2 of a predetermined shape, and vulcanizing and adhering a rubber 3 of a predetermined shape to part of the surface of the metal component 2 by metal molding.

An application position of a processing force directed radially outward is continuously changed in the circumferential direction of a cylindrical portion (25) while applying the processing force to a part of the cylindrical portion (25) of a hub main body (21) in the circumferential direction. An application position of a processing force directed radially inward is continuously changed in the circumferential direction of a staking portion intermediary body (41) while applying the processing force to a part of the staking portion intermediary body (41) in the circumferential direction.

A wheel bearing is provided with a sealing device comprising in-cluding at least an outer structure and an inner structure together de-limiting a chicane passage having an inlet. The outer structure forms an annular gutter which is open radially outwards. The inlet of the chicane passage and the shrink-fitting portion of the outer structure are situated axially on either side of the gutter. The shrink-fitting portion of the outer structure is situated on one side of a reference plane of the outer ring, perpendicular to the axis of revolution and tangential to the end wall of the outer ring opposite to the chicane passage and to the gutter.

A hub-bearing unit having an axis of rotation includes a radially outer ring configured to be stationary, a flanged hub inside the radially outer ring configured to rotate relative to the axis and relative to the radially outer ring, a radially inner ring mounted on the flanged hub in axial abutment with a shoulder of the flanged hub, a front toothing configured to receive a driving torque from a joint, and a retainer configured to receive and form a snap fit seal with an elastic ring connected to the joint, the retainer being located on a radially external cylindrical surface of the radially inner ring and comprising a shaped metal insert and an elastomeric element vulcanized onto the metal insert.

A wheel bearing assembly is provided. The wheel bearing assembly includes an outer ring, a wheel hub rotating relative to the outer ring, the wheel hub including a hub flange, an inboard surface of the hub flange facing an outboard surface of the outer ring and spaced a gap apart from the outboard surface of the outer ring in an axial direction, a plurality of rolling elements rotatably coupling the outer ring and the wheel hub, a first spacer disposed between the inboard surface of the hub flange and the outboard surface of the outer ring, and a second spacer disposed between the first spacer and the outboard surface of the outer ring. At least a portion of the first spacer and at least a portion of the second spacer are disposed in the gap.