Abstract: A thrust bearing assembly includes a bearing housing and a shaft supported therein in a front and rear spherical thrust roller bearings. First and second spring devices are provided to pre-load the front and rear bearings. The bearing pre-load exerted by the first spring device acts on the front bearing in a direction opposed to a working load applied to the front bearing. The first spring device removes the spring force from the front bearing race rings, when exposed to a working load exceeding the load exerted by the first spring device. The first and second spring devices under working load and idle conditions being arranged to provide clearance between the rear bearing outer race and a bearing housing seat for the rear bearing outer race for allowing tilting of the outer race in order to compensate for radial oscillations, thereby avoiding rubbing movement between the outer race ring and the housing.

Abstract: The device for detecting the rotational speed of a rolling-contact bearing includes an encoding element provided with a multipolar ring with axial magnetism secured to the rotating race of the bearing. The device further includes a sensor element provided with a passive sensor with a coil wound in an annular magnetic flux concentrator of U-shaped cross-section, and with a sensor holder secured to the non-rotating race of the bearing. The multipolar ring and the sensor element are located radially with an air gap. The magnetic flux concentrator includes a cylindrical part delimited axially by two collecting branches situated radially outside the cylindrical part. At least one of the collecting branches includes teeth on its periphery. Also, that branch of the flux concentrator which is located on the same side as the rolling elements is inclined toward the adjoining row of rolling elements.

Abstract: A composite annular encoder (15) for a bearing with information sensor (16), comprises an annular metal support (21) of L-shaped cross section with a plane radial part (21a) and an axial part (21b), and a annular element (22) produced as a single piece made from thermoplastic material, which annular element is constituted by a radial part (22a) which includes the multipole ring (22b) and is overmolded onto the plane radial part (21a) of the metal support, and by an axial retaining part (22c) overmolded onto the outer surface of the axial part (21b) of the metal support. The metal support has, on its axial part, anchoring points (21c, 21d) for the overmolding of the axial retaining part (22c) of the annular element made from thermoplastic material, enabling the thermoplastic annular element and the metal support to be rendered axially and circumferentially integral.

Abstract: An assembly of free wheels in tandem has an external cylindrical sliding raceway and an internal cylindrical sliding raceway, two rows of jamming cams evenly spaced between the external and internal sliding raceways in the circumferential direction and held in the form of a ring by means of an alveolate cage, and associated lateral bearings. The assembly includes a single central bearing common to both free wheels and interposed axially between the two rows of jamming cams. The central bearing includes a radial central web in the form of a substantially planar washer, and an internal and external rim with at least one part of each rim being folded over axially so as to form a bearing surface intended to come into contact with a corresponding sliding raceways. For one bearing surface of the external rim of the central bearing extending in a given axial direction, there is a bearing surface on the internal rim extending in the opposite axial direction.

Abstract: A sealing shield, particularly for rolling bearings, of the type wherein relatively soft, elastic peripheral portions are secured to a relatively rigid intermediate portion; the intermediate portion consisting of a single rigid annular insert formed from a synthetic plastic polymer; and the relatively soft peripheral portions being preferably in the form of independent elements co-molded on to the annular insert and formed from a mixture of an elastomer and the same synthetic plastic polymer from which the annular insert is formed. In a preferred embodiment, the annular insert has a trapezoidal radial cross-section.

Abstract: The sealing device (1) for a bearing (2) includes a first piece (8) of annular overall shape secured to the non-rotating race (4) of the bearing and supporting a permanent magnet (14), a second piece (9) of annular overall shape secured to the rotating race (3) of the bearing and including an annular part forming a pulse generator and a flexible sealing part in contact with the first piece. In operation the first and second pieces (8, 9) mounted in the radial space between the rotating race and non-rotating race at one end of the bearing provide the sealing of the bearing with respect to the external surroundings, the permanent magnet (14) being arranged facing a sensor (11) which is fixed with respect to the non-rotating race, the pulse generator passing between the permanent magnet and the sensor during the rotation of the rotating race of the bearing.

Abstract: A bearing unit consists of a radial bearing 1 and an axial bearing 2, the outer ring 3 of the radial bearing 1 being extended at one end in the axial direction to hold the axial bearing 2.So that the bearing unit is able to absorb large radial and axial forces and is reliably sealed off against contamination from the outside, the outer ring 3 of the radial bearing 1 consists of a solid piece of material, and the extension 3.sup.a of the outer ring 3 is provided, starting from the end surface 4, with a bore 4.sup.a to hold the axial bearing 2, this bore being sealed by a bearing housing cover 6, which rests against the end surface 2.sup.a of the axial bearing 2 and is connected to the outer ring 3.

Abstract: A rolling bearing seal assembly with a built-in sensor; the bearing including a first ring rotating in relation to a second ring, and a number of rolling bodies interposed between the first ring and the second ring and housed in a chamber defined between the two rings; and the seal assembly including at least one shielding element for closing the chamber and located facing the chamber and outside the bearing, and at least one sensor housed inside a seat formed inside the shielding element.

Abstract: A sealed four-row tapered roller bearing, useable for working rolls of roll stands, is provided with axial multipart inner and outer races and tapered rollers arranged between the bearing races, sealing of the seat of the outer race parts in the housing being preferably effected by O-rings which are arranged in annular grooves of the outer race parts. The bearing chamber is sealed axially outward by sealing rings which are fastened in annular grooves in the bore of the outer race parts and rest with sealing lips on surfaces of the inner race, the separating line between the front faces of the inner races being sealed off by a sealing ring which rests on the inner races.

Abstract: A fluid seal assembly with a primary seal element and a wear sleeve element. The primary seal includes a casing and a seal element that contacts a sealing surface on the wear sleeve. The wear sleeve has a cylindrical portion that overlies a portion of the sealed mechanism, and the cylindrical portion has a surface pattern thereon formed by metal cold flow, preferably by drawing and ironing. The surface pattern includes at least one hydrodynamic pumping element having a contoured portion that is radially offset from the remainder of the cylindrical portion of the sleeve.

Abstract: A method for forming a composite seal is disclosed. The seal includes a seal ring made from a lubricous fluorocarbon material affixed by a positioning collar to a seal casing having axial and radial flanges. The casing radial flange has an inner margin and a given outer diameter, and the seal ring has contact and non-contact faces. The seal ring also includes at least an outer margin of frustoconical configuration, terminating in an outer edge of a given diameter. The method includes positioning the seal ring and the casing in a multi-element mold, closing the mold and filling the mold cavity thus formed with a fluent, curable elastomer which is permitted to cure into a solid collar positioning the seal ring and affixing it to the casing. Thereafter, portions of the positioning collar are cut away to leave the seal ring secured to the casing by a positioning collar of substantially reduced, thin cross-section.

Abstract: The invention relates to a sensor system for measuring e.g. the preloads in screws, bolts or similar. It comprises sensor means (2) comprising a magnetoelastic material (6) sensitive to the preloads to which the object is exposed and a sensing device (3) comprising a contact portion (4) and gripping portion (5). The contact portion is so arranged that it at least partly surrounds the sensor means (2) and the magnetoelastic material (6) is excited with an excitation frequency of at least 300 kHz.

Abstract: The present solenoid stator assembly mounts on a seat forming part of a fuel injector, secured to it by mounting bolts. A rigid metal outer housing has a base shaped to fit upon the mounting seat of the fuel injector and defines an interior chamber. An E-shaped stator core is located centrally within the interior chamber and an insulated plastic inner housing extends between the stator core and the outer housing to fixedly secure the core within the interior chamber. The outer housing reinforces the insulated plastic inner housing against the bulging forces imposed by high fuel pressure and protects it against damage from external blows.

Abstract: A water pump, especially for the cooling system of a combustion engine of a car, has a housing with a space for a fluid. This space contains a pump device. The pump device is mounted on a shaft which projects form the housing. The shaft rotates while being supported by a bearing assembly. The bearing assembly has an outer stationary ring mounted on the housing. The fluid space id sealed with respect to the shaft by a sealing unit having a first ring connected to the shaft, and a stationary second ring mounted on the outer ring of the bearing assembly. The first and second rings have sealing surfaces which are directed toward one another, or extend axially. The first ring is resiliently biased toward the second ring, to provide a seal therebetween. The first ring is connected to the shaft via an elastic dampening and centering element located between the inner circumference of the first ring and the outer circumference of the shaft, and distributed over the circumference of the shaft.

Abstract: A device for mounting and/or dismounting a bearing on a shaft incorporating a tapered clamping sleeve between bearing and shaft and an arrangement for mutual axial displacement of the bearing and clamping sleeve in at least one axial direction, which arrangement incorporates at least one wedge-pointed screw arranged, when being screwed in towards the shaft to cause a mutual displacement in axial direction between the clamping sleeve and the bearing by wedge action. The bearing is situated in a surrounding sleeve-shaped member significant axial space beside the bearing at least on one side. The arrangement for displacement of bearing incorporates at least one radial flange, axially affixed to the clamping sleeve. The wedge-pointed screw is arranged to be screwed in substantially radially through holes in the bearing housing, for exerting the axial wedge force between the flange and an inner race ring of the bearings.

Abstract: A double row, angular contact ball bearing comprised of an integral inner race ring and an integral outer race ring, the outer race ring having at least one circumferential depressing between the rows of balls and the inner race ring having a circumferentially radially extending end member axially outside each row of balls. The present invention also relates to a method of manufacturing double row, angular contact ball bearings by shaping sheet metal or tubular work pieces to finished inner or outer race rings by rolling, pressing or deep drawing, introducing rows of balls between the race rings, shaping the race rings to final form by rolling or pressing, and rolling the rows of balls constantly about the circumferential periphery of the inner race ring during the rolling or pressing of the race rings.

Abstract: A fluid seal assembly for use in high pressure sealing applications. The assembly includes a seal with a rigid casing having a radial casing flange and an elastomeric seal body bonded to the casing. The assembly also includes an annular lip reinforcing ring, made from a low friction material. The ring has a trapezoidal cross-section with an inner cylindrical surface closely spaced from the shaft to be sealed, an outer end face directly contacting the inner end face of the casing flange, and a beveled surface engaging and supporting an air side surface of the elastomertc seal body.

Abstract: A sensor device of speed of rotation of a rotating member mounted by way of a roller bearing on a non-rotating member, said device comprising a coder element (11) rigid with the rotating race (6) of the bearing and producing an alternating magnetic field and a sensor element (12) rigid with the non-rotating race (7) of the bearing and arranged facing the coder element with an air gap, the coder element (11) comprising two axially magnetized concentric multipole rings (14, 15), and the sensor element (12) comprising an induction coil (17) coaxial with the multipole rings cooperating with a magnetic flux concentrator (18) whose collector branches (20, 21) are oriented axially facing said multipole rings (14, 15) of the coder element. Application to motor vehicle wheel hubs equipped with an ABS system.

Abstract: A casting is formed by inserting a metal reinforcement coil into a mold cavity and injecting a plastic casting material into the cavity such that the coil becomes embedded within the plastic casting material. Prior to being placed in the cavity, the coil is heat treated to relieve stresses therein, and a layer of plastic is sintered to the outer surface of the coil. Plastic is injected into the mold at a temperature lower than the heat-treating temperature, but hot enough to melt an outer portion of the layer and become joined therewith. An inner portion of the layer remains sintered to the coil.

Abstract: Device for sensing the rotational speed of a rotating element (4) mounted by means of a roller bearing on a non-rotating element (3), comprising a multipolar ring (17) which is integral with the rotating element, a sensor (19) which is made integral with the non-rotating element, and a magnetic flux concentrating means arranged in the immediate vicinity of the multipolar ring and cooperating with the sensor in order to concentrate and channel the magnetic flux emitted by the multipolar ring. The flux concentrating means is of annular shape and comprises at least a first end shield (24) having a radial part of which one circular edge is provided on its circumference with a sealing lip (25) intended for coming into contact directly or indirectly with the rotating element (4), and a second end shield (26) provided with radial teeth (27) spaced regularly along a circular path.