Abstract: An encoder wheel (1) for a roller bearing provided with a multipolar magnetised ring (5) presenting an axial thickness (S) which is radially variable in an inversely proportional way to a radius (R) of the ring (5) itself, and also provided with a metallic insert (6) for supporting the multipolar ring (5) itself; the metallic insert (6) presenting a curved annular wall (11), which axially delimits the multipolar ring (5), and presents a variable curvature to the variation of the thickness (S) of the multipolar ring (5).

Abstract: A device for locking and unlocking two mechanical members (2, 3) coupled for rotation as a unit (1) by means of a splined coupling (30, 33), comprises an elastic means (36) secured to the first member (2) and adapted for co-operation with the second member (3). The elastic means (36) is comprised of a bistable elastic element (36) having first (50) and second (52) alternative steady positions. The bistable elastic element is provided with hooking means (46, 48) adapted for co-operating in the first steady position (50) with the second member (3) to keep the members (2, 3) axially coupled, and for disengaging in the second steady (52) from the second member (3) to allow separation of the members (2, 3) forming the coupled unit (1).

Abstract: A roller contact bearing unit, in particular for the hub of a vehicle wheel, including a radially outer rotating race (10), a radially inner stationary race (11), a sealing device (16) between the races (10, 11) and a device for measuring the rotation speed of the outer race (10). The measuring device includes an encoder wheel (13) in the form of a radially oriented annular disc made of plastic or rubber magnetized material, and an annular insert made of non-magnetic metal (14) which is suitably shaped to form: a constraining means (14a) for fixing the insert (14) onto the outer race of the bearing unit, an axial abutting means (14b) suitable for abutting against a lateral surface (10b) of the outer race (10), an annular seat (14c) for housing and externally enclosing the encoder wheel (13), and a support means (14d) for a rubber element (15) which forms a sealing covering (15b) suitable for sliding against a surface (16) which forms part of a non-rotating element (11) of the bearing unit.

Abstract: A stud comprises a head and a stem with a threaded end length and a length having an axial knurling proximate to the head and adapted to be driven with radial interference into an axial bore of a radial flange portion fast for rotation with the hub of a motor vehicle wheel. The stud comprises at least one knurled surface having an area other than zero in a projection on a plane perpendicular to the longitudinal axis of the stud. The knurled surface is adapted to co-operate with the radial flange portion for preventing rotation of the stud.

Abstract: For mounting a sensor (17) to a railway axle bearing unit having an annular sealing insert (10) fast with the stationary outer race of the bearing from the axially outer side thereof, a sensor mounting device comprises a mounting element of substantially annular shape (14, 14′) adapted for mounting to an axial cylindrical surface (13) of the insert (10). The mounting element supports a sensor (17) to be positioned at the upper half of the annular insert (10) and a connector block (19), located at the lower half of the annular insert (10), and adapted for providing electrical connection between a wire (21) connected to the sensor (17) and a cable (22) connected to a further point remote from the bearing.

Abstract: A rolling contact bearing has a rotating unit to be integrally assembled to a rotating race (11) of the bearing, comprised of a first metallic annular insert (19) which forms a substantially disc-shaped radial wall (22) and a non-rotating unit to be integrally assembled to the non-rotating race (10) of the bearing, comprised of a second metallic annular insert (15) which has a sealing covering (14) with at least one sealing lip (18) suitable for sliding against the axially inner side of the disc-shaped wall (22); the rotating unit forms at least one substantially radial rotating surface (25) of a given minimum diameter (DR) and the non-rotating unit forms at least one substantially radial non-rotating surface (25) with a maximum diameter (DS) lesser than the minimum diameter, where the units are reciprocally positioned in such a way that the rotating surface (25) is facing the non-rotating surface (23a) from an inner axial position to form an axial stop for the non-rotating surface (23a), so as to provisional

Abstract: In a device for reversibly locking a constant-velocity joint (2) with respect to a hub (1), the constant-velocity joint is axially locked to the hub by means of a spring-lock ring (21) of circular cross section recessed in a circumferential groove (22) in part formed on said joint (2) and in part on said hub (1). The joint comprises reaction means (24) integral therewith, particularly a rigid annular diaphragm disposed adjacent to the hub and facing an axial through bore (15) formed in the hub. The diaphragm is adapted for co-operation with an extraction tool (28) that can be inserted through the hub bore (15) in order to apply to the joint (2) and the spring-lock ring (21) an axial force with relative to the hub in either direction so as to separate or couple the joint (2) from or to the hub.

Abstract: A rolling bearing, having, for example, cylindrical rollers, is provided, between an inner ring and an outer ring, with a retaining structure for retaining the rollers. The retaining structure includes an annular retainer having a number of seats for click-in insertion of the rollers, and from an end edge of which projects a radially outer flange having a sliding surface cooperating in sliding manner with a radially inner surface of the outer ring of the bearing to support the annular retainer in a radially inner position with respect to the outer ring and so prevent the annular retainer from sliding against the rollers. The seats for the rollers each have a pair of axial projections for compensating any axial clearance between the rollers and the respective seats.

Abstract: There is disclosed a method of mounting a wheel hub bearing assembly to the knuckle (10) of a vehicle suspension standard by forcefully inserting the outer race (20) of the bearing in a bore (11) in the knuckle (10). The bore has a groove (15) near its axially outer side to accommodate a snap ring (14) for axially securing the bearing's outer race (20) within the bore (11). Angularly spaced radial slots (24) are provided in the axially outer rim of the knuckle (10); a hub bearing unit is assembled separately. The snap ring (14, 14') is fitted over the hub at an axial location between the axially outer end portion (23) of the bearing outer race (20) and a portion (34) of the hub (16) facing said end portion (23); at least one axially tapered sliding surface (33, 34, 23) is provided between said facing portions (23, 34).

Abstract: A rolling contact bearing is described with a sealing device suitable to discharge the electrostatic currents which accumulate in a autovehicle; the sealing device (13, 32) has at least one sealing element (17, 37, 43) made of elastic conductive material integral with the stationary race (11) of the bearing and said sealing element engages, by sliding contact, a surface (21, 22, 40, 41, 33) integral with the rotating race (10, 35) of the bearing. The sealing element made of elastic conductive material (17, 37, 43) co-operates with the sealing device (13, 32) to form a hermetically sealed chamber (26, 24, 39, 44); said chamber contains electrically conductive grease and is placed between the outside environment and the bearing inner portions (14) which normally contain lubricant grease.

Abstract: A disc or drum brake member is usually connected to the flange of the bearing of a motor vehicle wheel; possible manufacturing errors in the flange of the bearing, and/or the brake member cause, on tightening the wheel to the flange, deformations in the bearing tracks and the active surfaces of the brake member; to avoid this, an elastically-yielding connection element is interposed, connected to the bearing on one side and the brake member on the other side, and constituted by a bell of sheet metal, dimensioned to present a high torsional rigidity associated with a limited axial rigidity to absorb and neutralise the tensions produced on tightening the screws holding the wheel to the flange of the bearing, even in the presence of manufacturing errors on the corresponding facing surfaces of the parts to be joined.

Abstract: Integrated wheel and wheel hub assembly for a vehicle, including a wheel hub (3), a wheel (2), carried by the wheel hub (3), a suspension mount (5) to connect the wheel hub (3) to the vehicle body, a rolling bearing, interposed between the wheel hub (3) and the suspension mount (5), and a brake rotor (39). The wheel includes a a rim (10) for the insertion of a tire (11) and a wheel flange (13), substantially radial, to connect the rim (10) with the wheel hub (3), the empty wheel flange (13) being prepared as an independent component, both of the rim (10) and of the wheel hub (3), and being connected solidly axially and angularly and in a secured manner to the wheel huo (3), and being connectable in a removable way to the rim (10).

Abstract: A sealing assembly for rolling bearing comprises a shield interference fitted to a first race of the bearing. The shield comprises a rigid support having an axial sleeve portion for connection to the first race, and a radial flange portion extending towards the second race of bearing. The support forms a U-fold acting as an axial stopping means for co-operating with a mating surface of the first race to axially lock the shield with respect to said first race.

Abstract: There is disclosed a wheel hub or hub unit of the type having a radial hub flange (13) providing connection to the wheel (40) and to a brake member (10) having an annular disc portion having a plurality of ears (11) radially protruding from its inner edge. The hub flange (13) defines a plurality of axial passages, in the form of peripheral radial recesses (19) or bores (17, 17') for slipping a plurality of axial pins (30) to be fitted in holes (12) obtained in the brake member ears (11) and in openings (22) obtained in at least one radial wall (23) of a brake carrier (20) rotatably fast with the hub (14) to rotationally secure the brake member (10) to the hub. When the wheel (40) is mounted on the outside of the hub flange, axial movement of the pins towards the outside is stopped by the wheel.

Abstract: In a goods wagon axle bearing assembly of the type provided with a sealing device (20) at its axially outer end, the sealing device comprises a rigid, non-rotating shield (21). Integrated with the sealing device (20) is a current generator, consisting of a magnetised impulse generating ring (25) rotatably fast with one of the rotating parts (12) of the bearing, and a coil (24) operatively facing the magnetised impulse ring and secured to the non-rotating shield (21). The current induced in the coil (24) is supplied to a current drain point on the same goods wagon.

Abstract: A vehicle wheel hub bearing unit is disclosed, in which the outer race (10) of the bearing has a radial bearing flange (11) providing an axially protruding edge (12) adapted for being folded by rolling in a radially outer direction to secure for rotation a flange (21) of the brake member (20). The brake flange (21) is clamped between the rolled edge (12') and a peripheral undeformed radial edge (13) of the same bearing flange (11). The hardness of the material forming the axial edge (12) to be deformed by rolling is between about 200 HV and 300 HV. This edge (12) protrudes axially from the brake flange (21) by a length (d) shorter than 5 mm. The thickness (e) of said edge (12) is within 1 and 3.5 mm. The axial thickness (a) of the edge (12') deformed by rolling against the brake flange (21) is less than 3.5 mm and the axial thickness (c) of the undeformed radial peripheral edge (13) exceeds said axial thickness (c) by a length x=0.4.div.1 mm.

Abstract: A sealing assembly for a rolling element bearing includes first and second screens fixed respectively to first and second rings of the bearing, with each screen including a respective rigid reinforcement and a respective elastomeric covering. The first screen includes a sleeve portion and a flange portion and also includes two sealing lips which cooperate with a sealing surface of the second screen. The first screen also has an annular projection extending from the sleeve portion that is adapted to be interposed, together with an extension of the elastomeric covering, between the front surface of the first ring of the bearing and a shoulder of the bearing itself. The second screen has a phonic wheel defined by a flange portion of the rigid reinforcement and a magnetized portion of the elastomeric covering. The elastomeric covering of the second screen has a front surface projecting beyond the front surface of the first ring.

Abstract: The hub of a wheel of a motor vehicle, defined by a flanged ring of a rolling element bearing, is joined to a corresponding constant velocity universal joint by a coupling capable of transmitting torque even in the most extreme operating conditions; an intermediate ring is interposed between the hub and the joint, mounted with slight interference or with some play on a suitable smooth cylindrical centring seat of the hub and then locked axially to the hub by means of the plastic deformation of an edge at the end of the hub; the intermediate ring is provided with two opposite splined couplings defined, for example, by sets of axial teeth, one internal and the other external, disposed at one end of the ring itself, and capable of interlocking respectively with corresponding teeth for a splined coupling of the joint and the hub; alternatively, the two teeth are both formed within the intermediate ring and the teeth coupled with the hub are disposed between the races of the rolling element bearing; the intermedia

Abstract: There is disclosed a system for mounting a wheel hub bearing unit into a cylindrical seat (11) obtained in the suspension standard (12) of a vehicle. An axially outer circumferential groove (16) is obtained in the cylindrical seat (11). Proximate to the axially outer side (10a) of the outer race (10) of the bearing there is provided an elastic insert(15) of annular shape having a radial portion (15a) adjacent to said tace (10a) and constituting an axial stopping means for the outer race of the bearing. Elastically flexible portions (15b) are radially protruding from the outer surface or the bearing and are adapted to elastically bend and snap fit into said qroove (16) when the insert (15) is pushed axially into the cylindrical seat (11) of the suspension standard (12).

Abstract: A vehicle wheel hub bearing unit comprises:a stationary, radially outer race having a portion projecting radially outwardly;a rotatable, radially inner race;an encoder fixed for rotation with the rotatable radially inner race in close proximity to the inboard side of a flange fast for rotation with the hub and projecting radially outwardly therefrom;a sensor mount element fixed to the radially outwardly projecting portion;a sensor body mounted in removable manner to the mount element and incorporating a sensor element facing in operation the encoder.