Abstract: A hub-bearing unit (10) for the wheel of a motor vehicle includes a hub (11) with a radial flange (13) and a central tubular portion (12) having an outer cylindrical surface (12a), and a bearing unit (15) with a dual set of rolling elements (16, 17) radially interposed between an outer, stationary bearing race (18) and first and second radially inner bearing races (19, 20) located side to side on the cylindrical outer surface (12a) of the tubular portion (12) of the hub. The hub forms a conical shoulder surface (21) diverging in an axially outer direction, and the first inner bearing race (19) has a conical surface (22) abutting against the conical shoulder surface (21) of the hub.

Abstract: A method for treating the surface of a machine element, such as the raceway and/or a rolling element of a rolling element bearing, comprising the steps of—subjecting the surface to a hard turning operation so as to obtain a specific roughness profile having a series of alternating ridges and grooves,—after the hard turning operation subjecting the surface to a ball calendering operation so as to flatten the ridges of the roughness profile whereby a ?q value smaller than 5° is obtained.

Abstract: Electrical connection system between a wheel and a bearing-hub assembly, the wheel being mounted on an outer flange of the bearing-hub assembly, and the bearing-hub assembly comprising a rotationally fixed outer ring attached to the vehicle's suspension and an inner ring provided with a centering collar, an open frontal cavity defined in the said centering collar and an axial cavity opening into the said cavity; the connection system having a first connection cable attached to the inner ring and extending inside the axial cavity and the frontal cavity, a second connection cable integrated with the wheel, and a connection element associated with the said centering collar to provide electrical contact that can be selectively disconnected between the first cable and the second cable.

Abstract: A process for mounting an outer bearing ring involves press fitting a stamp into the outer ring so that the inner peripheral surface of the outer ring assumes the shape of the stamp. Using the stamp, the outer ring is then press fitted into the recess of a machine part so that the contour of the external peripheral surface of the outer ring is plastically molded through axial stretching into the machine part. To mount an inner ring, a stamp with a bore is press fitted onto the inner ring so that the inner peripheral surface of the inner ring pressing against the stamp assumes the shape of the bore of the stamp. Using the stamp, the inner ring is then press fitted onto the machine part and the contour of the inner peripheral surface of the inner ring is plastically molded through axial flow forming into the machine part.

Abstract: A hub bearing assembly comprising a hub having a radially outwardly directed flange at one axial end for mounting the wheel of a vehicle, an outer ring having axially spaced raceways and a plurality of rolling elements arranged in two rows in the annular space between the outer ring and the hub, the diameter of the pitch circle of the outboard row of rolling elements adjacent said flange being greater than the diameter of the pitch circle of the rolling elements in the inboard row.

Abstract: A device is provided for measuring roundness of a mechanical object even if the mechanical object performs an orbit movement. The orbital movement and the surface roundness are separated. It is even possible to divide the orbital movement into an x component and a y component. The measurement is accomplished in a single measurement. After measuring it is possible to decide what to indicate: the orbit of the mechanical object, the deviation from a nominally round surface, or the combination of both. This is possible since once the data has been obtained it is then possible to use the data once or a number of times to indicate the orbit of the mechanical object, the deviation from a nominally round surface, or the combination of both.

Abstract: A linear bearing includes a linear guide on which a carriage is translationally movable, a plurality of balls between the linear guide and carriage located in a contact area between the linear guide and the carriage on a straight line, ball deflection sections each adjoining one end of the line outside the contact area, and a ball return section, with the balls being adapted to continuously revolve along the line between the linear guide and the carriage, the ball deflection sections and the ball return section. The ball deflection sections include an end part and a ball deflector. The end part is provided with a trough-shaped depression which guides the balls, while the ball deflector includes a hemispherical or hemi-ellipsoidal section. Also, a deflection path for the balls is provided between the trough-shaped depression and the hemispherical or hemi-ellipsoidal section in a mounted state of the linear bearing.

Abstract: A forward-reverse control device comprises a housing, a rotatable input member, having a rotatable output member, a gear set for reversing the input rotation, as well as a selector for selectively connecting the input member and the output member directly or through the gear set, wherein the selector is driveable by an electric actuator.

Abstract: A segment roll for use in a continuous casting machine includes a number of roll segments axially spaced apart and supported in bearings on a non-rotating shaft. Each roll segment is a self-contained unit including a sleeve-shaped outer mantle, an internal sleeve disposed coaxially within the outer mantle, and a bearing assembly disposed radially between the outer mantle and the inner sleeve within an annular recess disposed at each end of the roll segment. Each bearing assembly is spaced from an inner envelope surface of the internal sleeve and includes a bearing and a seal, wherein the internal sleeve is in non-rotatable contact with the non-rotating sleeve.

Abstract: King-pin assembly with a sensor (24), the King-pin assembly (5) comprising a Kingpin (12), an axle frame (10), a spindle (14) and a bearing (15) for moveably mounting the spindle (14) to the axle frame (10) using the King-pin. The King-pin assembly further comprises a spacer (1) for holding the axle frame (I0) at a predetermined distance from a bearing inner ring (20). A housing (2) is attached to the spacer (1), the housing (2) comprising at least a first part (3) of the sensor (24), a second part (4) of the sensor (24) being fixedly attached to the spindle (14).

Abstract: An elastomeric bearing having inner and outer races and a core. The core has a plurality of resilient laminae and a plurality of non-resilient laminae interleaved with one another. Each of the lamina has an axially inner cylindrical portion of a given diameter, an axially outer cylindrical portion of a greater diameter than the given diameter and, lying between the inner and outer laminae, an angled portion joining the axially inner and outer laminae to each other. The laminae are continuous and of one piece. In this way, the elastomeric bearing has comparatively small resistance to torsional movement, but great resistance to both radial and axial movement.

Abstract: A tool for installing oil or grease seals. The tool includes a cup member with a driving handle at the top thereof. Various sizes of a seal installing member are provided and all have the same upper cylindrical portion with the lower cylindrical portion being of various sizes, depending on the seal with which it is to be used. The tool also includes a pair of extension sleeves, one with an internal rib and the other with an external rib for supporting the cylindrical portions of the sleeve and the installing part when assembled. Each of the second parts and the sleeves include locking pins or slots for receiving the locking pins. The working portion of the tool is the lower annular end face and the cup-like top portion includes a closed face on the top for supporting the tool or one of the extension sleeves.

Abstract: An air dryer system including two substantially identical canister-type air dryer units. Each includes a moist air inlet, a first desiccant, a dry air outlet, and means for supplying dry air to a storage facility. The system also includes a bleed valve supplying a small portion of the dry air to regenerate a second desiccant, and a first moist air purge valve. The system operates in the opposite mode and supplies air to a storage facility. Located between the moist air inlets and the desiccants are a pair of air-oil separators. In these, upwardly directed air flows through a housing, striking a deflector plate, and escapes beneath a vertically extending fence and through vents containing a filter medium.

Abstract: Protection device for a speed sensor, the sensor being provided with a reading surface which is arranged at a first determined distance from an encoder of a contact rolling bearing, and the protection device being coupled to the contact rolling bearing, and presenting a housing for the sensor, and at least one scraping element which is arranged in such a way as to face the encoder itself in order to remove any eventual impurities from the encoder.

Abstract: A wind power plant comprises an outside ring, an inside ring and roll bodies arranged between an inside jacket of the outside ring and an outside jacket of the inside ring for permitting twisting or rotation of the bearing rings against one another. One of the rings on the jacket comprises an auxiliary sensor at least along a portion of the periphery. The auxiliary sensor together with the primary sensor provided in the other bearing ring are configured in such a way that a twisting or rotational position of the two bearing rings relative to one another can be detected.

Abstract: A rolling element having comprises an inner ring, an outer ring and a series of rolling elements which are in contact with the raceways of the rings, an ultra-low viscosity fluid being present in the contacts having a kinematic viscosity ?=(?o/?) of less than 2 mm2/s, wherein the surfaces of the rings and the rolling elements have asperities which can have solid-to-solid contact during operation of the bearing. A factor <i>Dq</i> is defined which is equal to (I) whereby the solid-to-solid contact of the asperities is reduced by selecting such design parameters and operating conditions of the bearing that <i>Dq</i> is in the range from 8.0×10?6 mrad s1/2 to 1.36×10?4 mrad s1/2.

Abstract: A bearing unit comprises a radially outer stationary race (1) and a pair of radially inner rotatable half-races (2a, 2b). Au intermediate annular chamber (8) is defined between the outer race (1) and the inner half-races (2a, 2b) The intermediate chamber communicates with the outside through first air passages (5) formed in the outer race (1) and with the inside of the bearing unit through second radial air passages (6) defined between the inner half-races (2a, 2b). An intermediate annular member (10) is axially interposed between the inner half-races (2a, 2b) and defines the second passages (6).

Abstract: A support information communication system for transferring requests for information support that is to be used by personnel performing servicing, mounting and/or dismounting of a bearing and/or a seal. The system includes one or more information terminals and an information support computer.

Abstract: The assembly comprises an electric motor (30) with a stator (31) and a rotor (34), a screw mechanism (60) including a rotatable nut (61) and a central screw (62) translatable along a given axis (x), and a planetary gear reduction system (50) disposed between the rotor (34) and the screw mechanism (60). The rotor (34) serves as a carrier for the satellite gears (52) of the reduction system (50).

Abstract: This Abstract will replace the prior version of the Abstract listed in the application. The actuator comprises a tubular nut (22) coupled by means of an external thread (21) to the casing (12) of the actuator. The nut has an internal thread (23) opposite the external thread, for engaging a threaded rod (11) which is prevented from rotating with respect to the casing. A geared motor (13, 14) rotates a pinion (15) which, through two straight spur gears (161, 162), causes the nut (22) to bring about a screwing movement along a longitudinal axis (x), while the rod (11) translates rapidly in telescopic manner with respect to the casing (12). The spur gears have a pinion portion of greater diameter (161a, 162a) meshing with the pinion (15), and a splined shaft portion (161b, 162b) meshing with a pinion member (22b) integral with the nut (22).