Abstract: Device for operating a clutch of the type comprising a thrust ball bearing 16, equipped with a non-rotating race 17 and with a rotating race 18, capable of acting on a diaphragm of a clutch mechanism 21, an operating element 11 comprising a tubular portion 13 and a radial flange 14, which can move axially along a guide tube 6, and an elastic self-alignment member arranged radially between the thrust ball bearing 16 and the tubular portion 13 of the operating element 11. The elastic self-alignment member comprises an annular scraping lip 28 which rubs against the guide tube 6 to form a scraping seal.

Abstract: A method of heat-treating a work piece of high-alloy steel by hardening involves relatively briefly annealing the work piece before hardening, followed by cooling the work piece. The brief annealing that is performed before the actual hardening and the ensuing cooling results in homogeneity of the material in the microscopic range. Following the annealing, the work piece is hardened, for instance by quenching in a salt bath, to achieve a super fine distribution of globular carbides in the microscopic structure with considerably reduced size as compared to the outset state. Also, the microscopic structure created by the method of the invention has improved toughness properties as well as increased microscopic structure stability to aging and leads to a longer service life.

Abstract: A rolling bearing, in particular for motor vehicle steering column comprising an external ring (4) provided with a bearing raceway, an internal ring (6) provided with a bearing raceway, a row of rolling elements (8) arranged between the bearing raceways of said rings, tolerance ring (9) linking the internal ring with the shaft (3), and a spring washer (11) for blocking the bearing on the shaft (3). The external ring (4) comprises bosses (12) for axially maintaining the spring washer (11).

Abstract: Device for detecting parameters of the rotation of a shaft 1 that rotates with respect to a stationary element, there being at least one bearing between the shaft and the stationary element so that the shaft can be mounted to rotate with respect to the stationary element, the said device comprising an encoder means 15 rotated by the rotating shaft, and a sensor means 10 secured to a stationary element and arranged facing and a small air gap away from the encoder means whose passage during rotation is detected by the sensor means. The encoder means and the sensor means are supported by a removable unit 4 independent of the bearing, the said unit being capable of being mounted on the stationary element and having a stationary part 9 supporting the sensor means and a rotating part 13 supporting the encoder means, the rotation of the rotating part being connected to that of the rotating shaft.

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 bearing lubricating device includes: an oiling mechanism for supplying a predetermined amount of lubricating oil to a shoulder peripheral surface of a race ring of a rolling bearing located on a side of a raceway surface of the race ring of the rolling bearing; and air jetting mechanism for jetting air so as to transfer the lubricating oil on the shoulder peripheral surface toward an interior of the bearing, wherein the air jetting mechanism has a receiving space formed in a side member disposed on a side of and adjacent to a nonrotating race ring of the bearing so as to receive air from an outside as well as an air jetting slit communicating with the receiving space, the air jetting slit having an annular shape concentric with the race ring and substantially continuous in a circumferential direction and being formed to be open in such a manner as to be oriented toward the interior of the bearing.

Abstract: Method of manufacturing a bearing ring (1) for a bearing such as a ball bearing or cylindrical roller bearing, wherein the bearing ring (1) is rotated around an axis (6) and the amount of material removed is controlled by the choice of the cross section of an electrode (3) parallel to the surface of the raceway under the electrode (3). Thus the radius of the groove (2) is kept constant. An electrode with a suitably adapted convex cross section allows for the manufacture of bearing rings within a very narrow specification range. Thus the invention also relates to a bearing comprising an electrochemically machined bearing ring (1) according to the invention having excellent operational life and characteristics.

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: A propeller thrust bearing assembly includes a spherical rolling bearing provided on a shaft and abutting against a shoulder, and a spherical thrust bearing, incorporating a shaft washer fitted on the shaft, a housing washer provided in a housing surrounding the shaft and a set of rolling bodies provided between the shaft washer and the housing washer. A spacing sleeve is provided between the spherical rolling bearing and the spherical thrust bearing, and a lid member is attached to the housing. The lid member is adapted to urge the housing washer against the set of rolling bodies and via the rolling bodies against the shaft washer. The axial distance between the two bearings is such that their force lines meet at a point situated on the center axis of the shaft. The spherical rolling bearing has a taper bore and is mounted on a withdrawal sleeve, and the spacing sleeve has internal threads and is screwed onto the withdrawal sleeve.

Abstract: A bearing unit includes a housing provided with a cylindrical bore and a linear bearing positioned within the cylindrical bore. The linear bearing includes a cage in which are arranged a plurality of endless ball rows each defined by a longitudinally extending ball track for load-bearing balls, a longitudinally extending return track for non-load-bearing balls, and deflection tracks connecting ends of the longitudinally extending ball track and the longitudinally extending return track. Each longitudinally extending ball track opens radially outwardly with a track plate being arranged to cover the longitudinally extending ball track for the load-bearing balls. The cylindrical bore of the housing is provided with a plurality of recesses each located in an area of the cylindrical bore facing one axial end of one of the track plates to permit radial deflection of the one axial end of the track plate.

Abstract: Freewheel device 1, of the type comprising an outer race 2 which has an inner track 3, an inner race 4 which has an outer track 4, a freewheel 6 situated between the tracks of the said races, at least one member 7 forming a bearing intended to keep the said races 2, 4 concentric, and at least one lateral retaining endplate 12, secured to one of the races in order axially to hold the freewheel 6 and the member forming the bearing with respect to the said race. The endplate 12 comprises a first radial portion 12a adjacent to the corresponding holding member 7 for retaining it axially, and a second more or less radial portion 12b cut into tabs projecting into an annular groove 21 formed in one of the races, the said endplate coming into contact with a side wall 21a of the said groove.

Abstract: A one-piece, reusable hub seal unit for heavy duty axles and the like. The unit includes a stiff but flexible casing covered with an elastomeric portion. The casing has a radial flange, a slightly axially inclined sleeve portion, and a purely axial portion ending in a free edge. The elastomeric covering is thin adjacent the free edge, gradually increases in thickness throughout the slightly inclined axial extent and finally contains a radial section covering the flange and having two or more sealing ribs. A cover holds the seal unit in place when it seals snugly in the counterbore. When the cover is removed, the seal may be removed by hand from the counterbore.

Abstract: Linear guide assembly comprising at least two guide rails, which are movable in the longitudinal direction with respect to each other having similarly shaped raceways, a plurality rolling elements, guided in a cage, at least one gear wheel connected to the cage for the positive guidance of the cage, which wheel engages in toothed racks or the like, each of which is connected to a guide rail, said gear wheel consisting of a disk, having an external circumference which is provided with uniformly distributed axial rolling elements, which project slightly beyond the disk, and wherein said recesses, correspond to the external shape of the rolling elements and into which the rolling elements can engage, are provided equal distances apart directly in the guide rails.

Abstract: A bearing unit having a sealed single-row deep-groove ball bearing. The sealed single-row deep-groove ball bearing includes an outer race ring with a sphered outer envelope surface, a housing with a sphered bore for accommodating the bearing, an inner race ring with a taper bore, and a correspondingly tapered clamping sleeve provided in the bore of the inner race ring and having a flange provided on at least one side of the bearing. The flange has at least one bore, and at least one tightening device for causing a force on the bearing inner race ring for displacing the inner race ring along the clamping sleeve thereby causing a clamping effect between the inner race ring and the sleeve and between the sleeve and a shaft on which the bearing unit is mounted. The bore of the flange includes a threaded through-bore extending at an acute angle with respect to an axial direction of an inner envelope surface of the sleeve.

Abstract: A roller bearing comprising an inner and an outer ring in concentrical arrangement, a series of roller elements being arranged in the space between said rings and being in contact with raceways provided in said rings. The bearing is characterized in that said raceways are provided with parallel grooves, each one of said grooves being arranged in the plane of rotation of said rings and extending along the entire envelope surface, and in mutual correspondence to said inner and outer rings and being arranged for mating interaction with protruding flanges of said roller elements corresponding to said grooves, said protruding flanges extending along the entire envelope surface of said roller elements.

Abstract: The present invention includes a lubricated bearing which incorporates a phase convertible compound. The compound absorbs and stores heat generated during operation of the bearing. This absorbs and stored heat is then released upon start-up conditions of the bearing, especially under low temperature conditions. The released heat is used to improve the ability of the lubricant contained within the bearings to reduce friction of the relatively movable parts contained therein.

Abstract: A rolling element bearing having inner and outer rings and a plurality of rolling elements where one, two or at least one but not all of the rolling elements of the plurality of rolling elements is harder than the other of the plurality of rolling elements and harder than the rings.

Abstract: A support body used in a tensioning device includes a support element and a bottom plate. The support element is attached to the bottom plate in a radially and axially form-fitting and fixed manner through use of a plastic element that is molded into place by extrusion. The plastic element engages a groove formed in the outer surface of the support element and also engages through holes formed in the bottom plate.

Abstract: A rolling bearing having an inner ring, an outer ring, and a plurality of rolling elements between the rings. A seal is mounted in the annular space between the rings comprising a flat disk (6), mounted to one of the bearing rings made of a material with good electrical conductivity. An annular member (9), attached to the other bearing ring whereby the seal functions as a current bridge to carry away electrical current according between the two bearing rings.

Abstract: A roller includes a rolling bearing having inner and outer rings, a roller shell formed of injection molding material and molded in a form-fitting manner onto the outer ring of the roller bearing, and a spindle disposed in the bore of the inner ring with a space being provided between the surface of the bore and the spindle. The spindle includes at least one form-fitting element. An injection molding material forms a filler in the space between the spindle and the bore surface, whereby the outside contour of the spindle is constructed as am outer shaping surface for the form tool. A method of producing a roller involves placing a rolling bearing having inner and outer rings into a form tool, placing a spindle in the form tool so that the spindle extends into the bore in the inner ring and is held in place in the form tool, closing the form tool, and injecting molding material into the form tool.