Wheel bearing units are disclosed. In one example, a wheel bearing unit includes an outer ring element and an inner ring element, between which there are arranged at least two rolling body rows. The inner ring element may have a radial flange which is fastenable to an axle body or to a wheel. The radial flange and/or the inner ring element may have at least one projection on a surface facing toward the outer ring element.

A bearing device includes: a bearing portion that has an inner ring, an outer ring, a plurality of balls interposed between the inner ring and the outer ring, and a cage that holds the balls; and an oil supply unit provided adjacent to the bearing portion in the axial direction. The oil supply unit has a pump that discharges a minute amount of lubricating oil to the bearing portion, and varies the amount of oil supplied to the bearing portion by discharge of lubricating oil from the pump.

A method for mounting a rolling bearing arrangement onto a rotor and into the bearing housing of a turbocharger is provided. The method includes inserting a component, which is deformable under the exertion of pressure, into the intermediate space between two rolling bearings of the rotor assembly. The rotor assembly includes a rotor shaft, inner bearing rings which are fastened to the rotor shaft or integrated into the rotor shaft and which have a spacing to one another, rolling elements which are inserted into the inner bearing rings, and outer bearing rings which likewise have a spacing to one another. The method also includes deforming, by exertion of pressure, the component that has been inserted into the intermediate space between the two rolling bearings, to set a desired axial preload between the two rolling bearings.

A hub-bearing assembly includes a stationary radially outer ring, a flanged hub extending into an interior of the radially outer ring and configured to rotate relative to the radially outer ring, and a radially inner ring mounted on the flanged hub and axially abutting a portion of the flanged hub. A toothed sleeve is mounted to the hub axially inward of and adjacent to the radially inner ring and is rotationally fixed relative to the flanged hub. An auxiliary ring is mounted on the flanged hub in contact with the toothed sleeve. The flanged hub includes an axially inner rolled edge in contact with the auxiliary ring and configured to maintain a preload on the radially inner ring, and the auxiliary ring is configured to accommodate deformations induced by the formation of the rolled edge.

A sealing device includes a first sealing member and a second sealing member. The first sealing member has a sleeve mounted on an inner member, and a flange. The second sealing member has a tubular portion mounted on the outer member, a disk portion that faces the flange, a radial lip in slidable contact with the sleeve, and a side lip extending from the disk portion and being in slidable contact with the flange. The first sealing member has an annular first protrusion protruding from the flange toward the disk portion. The first protrusion is disposed radially outside the side lip and overlaps the side lip in radial directions. The second sealing member has an annular second protrusion protruding from the disk portion toward the flange. The second protrusion is disposed radially outside the first protrusion and overlaps the first protrusion in radial directions.

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.

A procedure for mounting of a hub bearing assembly having a rotatable hub, and a bearing unit having a stationary radially outer ring, and two bodies rolling crowns disposed between the radially outer ring and the hub. The assembly process involves the following steps: a) pressing-fit a first seal on the hub, b) mounting an axially external cage and the axially outside rolling bodies, in correspondence with a track of the axially outer hub, c) the radially outer ring assembly and inclination of the same outer ring of a predetermined angle with respect to the hub, d) mounting of the axially interior rolling bodies in correspondence with a track of the axially inner hub, and the radially outer ring alignment to the hub, f) snap insertion of the axially internal cage on rolling bodies and g) the pressing-fit a second seal on its seat.

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.

A motor vehicle drive wheel assembly comprising a fixed subassembly comprising two outer raceways; and, a rotating subassembly comprising a first inner race, a second inner race and two rows of balls arranged in two pitch planes PP1 and PP2. The second inner bearing race has an outer diameter, measured in a section plane perpendicular to the axis of rotation and located between the first pitch plane and the second pitch plane, at a measurement distance DM of the first pitch plane, which is greater than a given threshold value VS.

A method for producing a composite rolling bearing (1) having a bearing flange (3) and at least one rolling bearing (4, 5) held on the bearing flange (3) by an inner ring (6, 7). In order to be able to fix the inner ring (7) on the bearing flange (3) with axial preloading without expansion, the inner ring (7) is acted upon by a holding-down device (23) that radially holds down the inner ring (7) and is preloaded against the inner ring (7) by a regulated axial force (F), and, by way of an advancing cone (21) introduced radially on the inside axially into the bearing flange (3), material (11) present on the bearing flange (3) is displaced radially towards the outside into a recessed formation (15, 16) in the inner ring (7).