Abstract: A method for establishing different parameters of a surface of a work piece during machining of the surface using a spindle supporting a tool and displacement sensors for measuring displacement to which the spindle is subjected during machining. The method involves machining work pieces with different back off times to create sets of sensor signals representing spindle deflections. The machined work pieces are measured and then the stored sensor signals are compared with the measurement results of the same work pieces. Transfer constants are calculated representing the influence of the total deflection of the machine stiffness on the sensor signals. Displacement sensor signals obtained upon machining subsequent work pieces are processed with the transfer constants to give a series of sensor signals representing the true total deflection of the loaded and running machine stiffness chain to permit calculation of different parameters of the subsequently machined work pieces.

Abstract: A hubcap for a wheel hub. The hub is threaded and preferably includes several notches in its otherwise smooth radially outer end face. The hubcap has an open end terminating in a threaded end portion, a closed end and a discontinuous radial flange between the ends. One or more latching tabs fit into the discontinuities in the flange, and each tab contains a projection which fits into the notch. The tab can be manually lifted to disengage the tab from the notch, but the hubcap cannot otherwise be unscrewed.

Abstract: Braked rolling bearing device of the kind for a control wheel, comprising an outer part and an inner part, one being able to rotate with respect to the other, which does not rotate, via at least one row of rolling elements arranged between the rotating and non-rotating parts, the device further comprising an element for detecting rotation parameters and an element for braking the rotating part. The braking element comprises at least one component equipped with flexible tabs bearing against an annular friction member.

Abstract: For the purpose of facilitating correct fitting of a motor vehicle wheel onto a hub (10) which froms a central axial tubular projection (11) for insertion into a central wheel hole (30), a hub assembly includes an annular cylindrical element (20) to be fitted on the projection (11) and having a plurality of circumferentially spaced resilient portions (21) capable of exerting force in radially outward directions on the wheel hole to support the wheel resiliently in an essentially centered manner relative to the hub.

Abstract: A screw actuator (4) comprises a housing (1), a nut (5) and a screw (6) one of which is axially fixed with respect to the housing and the other of which is axially displaceable with respect to the housing for moving an head (21), as well as a motor (7) which comprises a stator (8) connected to the housing, and a rotor (9) which is drivingly connected to a rotatable part (6) of the screw actuator, the housing having a bore (10) accommodating at least the nut and/or screw, an axially fixed part of said nut or screw being supported with respect to a radial support abutment (11) which extends inwardly in the bore. The rotor of the motor is supported rotatably on a sleeve (13), said sleeve engaging the fixed part and extending away from the brake pad, said sleeve having a radially outwardly extending sleeve flange (14) which is interposed between said support abutment, and the axially fixed part.

Abstract: An attachment device for a bore-provided machine member on a cylindrical shaft. A two-part sleeve is arranged in an annular space between the shaft and the machine member to provide a clamping force between the machine member and the shaft. The sleeve parts have mating cooperating taper surfaces that face each other so that upon mutual displacement of the sleeve parts the overall radial size of the sleeve parts changes. A first ring member is arranged about the shaft and forms a stop for one of the sleeve parts and a supporting device is adapted to move the machine member with respect to the shaft to cause mutual displacement of the sleeve parts. A second ring member positioned between the two-part sleeve and the machine member has a tapering bore, a tapering outer surface, and an inwardly projecting abutment for a second one of the sleeve parts.

Abstract: A method of improving the performance and service life of a new bearing component, the component having at least one dynamic frictional surface the method includes subjecting the at least one dynamic frictional surface to a surface finishing operation thereby providing the surface with a surface roughness value RA of approximately 18-80 &mgr;in, preferably greater than 24 &mgr;in, and most preferably 30-36 &mgr;in. The method is particularly advantageous when applied to bearing components utilized in high-load, low rpm applications.

Abstract: Bearing/hub group (1) with a sensor (8) for vehicle wheels, the group (1) presenting at least one rolling race which can revolve around a rotation axis A: a fixed rolling race (4) which is arranged outside the revolving rolling race (3) in a position which is coaxial to the revolving rolling race (3) itself and which is provided with a support flange (7) which projects towards the outside; and a sensor (8) which is mounted on the fixed revolving race (4) being made of different materials, and being connected to each other by an interface element (9) which is integral with the flange (7), and by two axial blocking elements (10) which are integral with the fixed rolling race (4) and which abut the interface element (9).

Abstract: Static sealing element (1) for a rolling bearing (2) which is mounted on a cylindrical element (3) which presents a blocking moulding (4) which is positioned against an inner race (5) of the rolling bearing (2) itself and which is suitable for being arranged in contact with a shoulder (6) the sealing element (1) presenting a support (8) which is associated with the inner race (5) of the rolling bearing (2), and a sealing lip (9), which forms an integral part of the support (8) and which presents, in turn, a substantially conical end portion (17), which axially projects in relation to the blocking moulding (4) and which radially forks opposite the blocking moulding (4) itself.

Abstract: The present invention refers to a seal arrangement for sealing off a slot between first and second mutually movable bodies, such as the rings of a bearing. The seal comprises a first and a second member, the first member being arranged on the first body and the second member being arranged on the second body, whereby a labyrinth-shaped slit is formed between the first and the second members. The slit being filled with a semi-solid material having lubricating properties so that, upon rotation of one of the members, the material will slide along one of the members thereby forming a very thin labyrinth between the member and the material, which labyrinth substantially prevents passage of air, moisture and dirt.

Abstract: In a hub-bearing assembly for the wheel of a motor vehicle, the hub (1) forms integrally or is fixedly secured to a radial flange (7) fixable to a wheel (8). Associated with the assembly is a measuring device (14) mounted to a non-rotating part (12) of the vehicle and operatively facing a radial surface (13) integral with the flange (7). The measuring device (14) detects in real time variations of the axial position of the surface (13) caused by elastic deformation of the flange (7) provoked by forces transmitted from the wheel (8) to the hub flange (7).

Abstract: A seal assembly which acts as a piston in a vehicle power steering unit. The seal includes a casing and an elastomeric seal body and is affixed to a movable rack at two attachment points. One point is the tail portion of an axial flange swaged into a groove in the rack, and a second part of the same axial flange has a groove for retaining a locking ring in a second groove in the rack. The rack moves within a housing having a first bore, a counterbore, and an enlarged bore. The seal comprises two oppositely facing lips and a lip body bonded to a radial flange of the seal assembly and engaging the enlarged bore which divides the space into two pressurizable fluid receiving cavities. An auxiliary seal is seated in the counterbore and seals the first bore. The seal assembly has a nose portion which engages the auxiliary seal to fully seat it in the counterbore. The nose portion, in one case, is a separate axially extending plastic piece that seats in a groove in the seal body.

Abstract: An actuator (5) comprises a housing (4) with a motor (6) and a screw mechanism (9), said screw mechanism comprising nut (10) and a screw (11) one of which is rotatably supported with respect to the housing by means of a screw mechanism support (13) allowing relative rotations of the screw and the nut with respect to the longitudinal screw mechanism axis (28), and an actuating member (15) connected to the screw mechanism by means of an actuating member connection (26), such that on relative rotation of the nut and screw the actuating member is displaced with respect to the housing. The screw mechanism support and the actuating member connection allow rotations having at least one axis transverse with respect to the longitudinal screw mechanism axis, so as to compensate traverse loading and bending moments.

Abstract: An oil ring lubricated split bearing housing includes upper and lower bearing housing halves having mating seat surfaces for a bearing which is adapted to support a shaft, an oil reservoir space in the lower housing half, an oil pick up ring partly immersed in the oil reservoir space and rotatable to transfer oil from space to the bearing, an inner labyrinth sealing sleeve fixedly fitted around the shaft and having a circumferential axial groove facing away from the bearing, and an outer labyrinth sealing part with a portion projecting axially into the axial groove thereby forming a labyrinth seal. Both bearing housing halves have gable openings closely fitting around the sleeve. The outer labyrinth sealing part being in the form of a ring having an axially projecting portion entering in the axial groove and another portion retained in a radial, circumferential groove in the upper bearing housing half.

Abstract: An annular element for a rolling bearing comprises a cylindrical surface around the circumference of which a groove, the radial and axial depth of which are variable around the circumference, is formed. The cylindrical surface is suitable for being over-molded with a plastics material to form a body which is fixed firmly for rotation with the annular element and has a plastics projection complementary with the groove. The projection can cooperate with the groove to prevent relative rotation between the annular element and the body.

Abstract: A bearing-suspension standard assembly for a motor vehicle wheel comprises a standard (10) with an essentially cylindrical seat (11), and a bearing unit (12) with a non-rotating outer race (13) fixedly mounted in the seat (11). A cementing material (16) is applied at one of the axial ends of the seat (11) so as to lock the bearing unit (12) in the seat (11).

Abstract: A device, method and computer program product are disclosed for indicating a function deviation of one or more details of manufacturing equipment using frequency component analysis for analyzing deviations between a nominal product shape and an actual product shape of a product using surface data of a physical surface, the product having been processed by the manufacturing equipment. The analysis can be based on the surface data and a set of function deviation indicating frequencies corresponding to frequencies at which function deviations occur in the one or more details. The function deviation indicating frequencies can be comprised in a frequency map. A method of configuring a frequency map is also disclosed.

Abstract: A bearing is provided including a first part provided with a first coil (4) and a second part rotatable with respect to the first part about a bearing axis and being provided with a second coil which is electromagnetically coupled to the first coil. The first and second coil are magnetically enclosed by a first covering and a second covering, respectively. The first covering is fixed to the first part and the second covering is fixed to the second part. An air gap is formed between facing ends of the first and second coverings, with at least one of the facing ends of the first and second coverings being provided with at least one recession, such that the air gap varies when the first part and second part rotate with respect to each other. This may be used to provide an indication of speed (bearing rotation) without further sensors.

Abstract: The invention concerns a clutch release bearing comprising an engaging element capable of co-operating with a clutch diaphragm (29), and designed to be mounted on a manoeuvring element (2) mobile in translation under the action of a control member (6). The engaging element comprises a roller bearing (1) provided with a rotating ring (13) and a non-rotating ring (9), said engaging element being radially mobile relative to the manoeuvring element to be self-aligned by means of a radially elastic self-aligning sleeve (19), arranged in the bore of the non-rotating ring to co-operate with the manoeuvring element. The roller bearing is of the standard type comprising an outer peripheral surface and a cylindrical bore axially defined by two parallel radial surfaces, and at least a seal joint (18) mounted on one of the rings and in friction contact with the other ring, the sleeve comprising sealing means co-operating with a rotating part of the engaging element.

Abstract: An improved rolling bearing, in particular one being used in aqueous environment, such as water and steam, comprising an outer race, an inner race, rolling elements, and a retainer holding said rolling elements in a spaced relation from each other, wherein the races of the bearing are made of stellite, the rolling elements are made of hot-isostatic-pressed alumina-zirconia composites, and the retainer is made of poly-ether ether ketone comprising graphite fibers, graphite powder, and polytetrafluoroethylene.