Abstract: An attachment device for arresting a machine member having a substantially cylindrical bore on a cylindrical shaft includes first and second sleeve members adapted to be positioned in a space between the outer surface of the shaft and the inner surface of the bore in the machine member. The two sleeve members have mating, cooperating taper surfaces in the form of a plurality of saw-tooth-shaped axially tapering sections that face one another. At least one of the sleeve members is movable for displacement relative to the other sleeve member to change the radial size of at least one of the sleeve members. The end edge of the first sleeve member projects axially beyond an adjacent end edge of the second sleeve member for receiving an external pushing force causing the first element to be displaced relative to the second element to cause the relative displacement of the sleeve members. The opposite end edge of the second sleeve members engages a stop that may be formed on the machine member.

Abstract: A rolling element bearing comprises an inner ring, an outer ring and a series of rolling elements the rolling surface of which is in contact with the raceway surfaces of both rings, and possibly at least one flange the surface of which is in slidable contact with the end surface of a roller element, at least one of these surfaces (8) being provided with a topography comprising recesses (13) which are generally isolated from each other by lands (14) and which may contain a lubricant. The recesses have a maximum size of 100 micrometer in a direction parallel to the surface in question.

Abstract: Annular housing device intended for maintaining the circumferential spacing of the rolling elements, in particular balls, in a rolling bearing, having at least one row of balls arranged between two rolling tracks, the housing having a rear face and a front face which are axially offset and having a multiplicity of substantially spherical cells, in each of which a ball is arranged, the cells issuing axially on the front face and radially on the two sides, the front face having a multiplicity of pairs of opposite tabs for maintaining the balls in the cells. The front face comprises two surfaces axially offset relative to one another, of which an outer first surface has the tabs projecting from it and is located in a plane in front of the radial plane passing through the centers of the cells, and of which an inner second surface is located in a plane passing substantially through the centers of the cells.

Abstract: An electric actuator (1) comprises a housing (2) which contains a screw mechanism (3) and an electric motor (4) which is driveably connected to the screw mechanism (3), said screw mechanism (3) providing a linear movement in a rotational movement of the electric motor (4) and comprising a screw (17) and a nut (18), one of which is supported with respect to the housing (2), a sensor (28) being provided for measuring a quantity related to the rotational movement and/or the linear movement of the screw mechanism (3). A control unit (29) for monitoring and/or influencing the rotational and/or the linear movement of the screw mechanism (3) on the basis of signals from the sensor (28) has been provided.

Abstract: An actuator for use in a brake caliper is situated at opposite ends of a screw mechanism. A reduction gear mechanism is located at a distance from the actuating member. The reduction gear mechanism is included in a reduction gear module and a screw mechanism is contained in a screw mechanism module, which are interconnected through a drive module. The drive module may be located at the end of the reduction gear module facing away from the screw mechanism module. The modules may be axially aligned or at least two modules may be axially shifted or eccentric with respect to each other. The screw mechanism module may comprise an angular contact bearing which may be supported in a housing in different ways. The reduction gear module may be part of a planetary gear system.

Abstract: An injection molding tool for producing a cage for a linear bearing in which several rolling elements are positioned in the cage in the direction of its longitudinal extent in the assembled state includes two tool halves each provided with protrusions. The protrusions extend into the cavity of the tool during the injection molding process and form a portion of a receiver pocket for receiving a rolling element. To make the injection molding process simple and economical, the protrusions are fixedly connected with the tool halves, with the protrusions being are shaped in such a way that, when acting together, they form holding elements for retaining the rolling elements in the receiver pockets in the cage when the injection molding tool is closed. The holding elements are thus integrated into the basic geometry of the cage.

Abstract: The fixing device is intended for a roller of the type comprising a pulley mounted on a rolling-bearing device comprising a row of rolling elements arranged between a ball race provided on an outer ring integral with the pulley and a ball race provided on an inner ring. The device comprises a screw comprising a cylindrical rod and, at one end of the cylindrical rod, a head provided with a rotary-drive. The device comprises a sleeve arranged on the screw, said sleeve comprising a gripping surface for fixing on the inner ring of the rolling bearing and leaktight seal interacting with a turning part of the roller.

Abstract: A number of annular or short tubular elements are obtained from an elongate tube having a length calculated as a multiple of the length of the elements. A tube is automatically transferred into a chuck of a twin-spindle lathe to turn the inner bore of an end portion of the tube. The end portion is then cut off the tube, thereby obtaining an annular element. The element is automatically reversed and fitted to a mandrel for turning its outer surface and its end where the cutting was performed. The so finished or partly-finished element is then automatically delivered to an outfeed conveyor. Such a sequence is repeated cyclically until the last portion of the tube is processed, leaving no waste tips of the tube. A numerically controlled lathe for performing the process is also disclosed.

Abstract: A wear sleeve for use with the active face of an associated seal unit. The wear sleeve includes a radial flange and an axial flange having a plurality of grooves therein. The grooves are formed on an inner margin of the blank while the blank is in a flat condition. Thereafter, the axial flange is drawn in a skirt forming die so as to create an outer surface on the axial flange having a hydrodynamic pattern thereon. The grooves are formed in a sinusoidal pattern, and the inner surface of the skirt forming die is free from formations creating interference with the skirt.

Abstract: Free wheel device, of the type corn sing an outer ring equipped with an interior slideway, an inner ring or shaft equipped with an exterior slideway, a free wheel placed between the slideway of the outer ring and the slideway of the inner ring and comprising a number of cams placed in windows of a cylindrical part of a single cage and providing a one-way coupling between the outer and inner rings, and at least one bearing placed radially between the outer an inner rings and intended to keep the outer and inner rings concentric. At least a free end of the cylindrical part of the cage is centered radially on a cylindrical guiding bearing surface formed on the bearing adjacent to the free end, the cylindrical bearing surface being arranged so that it is coaxial with the slideways, approximately mid-way between the slideways.

Abstract: A hub-bearing unit for a motor vehicle wheel comprises a bearing housed in a central axial cylindrical seat of a radially outer annular hub adapted for connection to the wheel of a vehicle. The bearing has an rotating ring the axial width of which is greater than that of the cylindrical seat. The outer ring comprises at least one tubular projection extending axially from one side of the outer ring. The tubular projection comprises an end portion projecting beyond a side surface of the hub and cold deformed in a radially outer direction towards said side surface, so as to lock the outer ring on the hub.

Abstract: A stainless steel component comprising 0.8-1.4% carbon, 18-26 wt % chromium, 2-4 wt % nickel, 0-1 wt % molybdenum, 0 wt % lead and less than 0.6 wt % silicon provides for beneficial properties. Such a component may be prepared by the provision of an article from a steel starting material, and austenitizing the article between 800° C. and 1050° C. followed by hardening. In this process, the steel starting material comprises a powder.

Abstract: A rolling contact bearing is fitted at one end thereof with a sealing device and a device for measuring the relative revolving speed between the bearing races. The sealing device comprises a metal insert (10) of annular shape fast for rotation with the rotating bearing race (11). The speed measuring device comprises a multipolar ring (18) mounted to the metal insert (10) and provided with magnetized segments of alternate polarity in the circumferential direction. The multipolar ring (18) is a ring of plastoferrite co-molded to the metal insert (10). Formed on the insert (10) is formed a plurality of radial recesses (21) adapted to yield, in the co-molding operation, a corresponding plurality of radial protrusions (22) in the multipolar ring (18). The radial recesses and protrusions (21, 22) are mutually engaged so as to prevent relative rotation between the multipolar ring (18) and the metal insert (10), but allow relative radial displacement owing to thermal variations.

Abstract: A rolling element bearing, comprises an inner ring, an outer ring and rolling elements which are in rolling contact with the raceways of the inner ring and the outer ring. The rolling elements and/or the raceway (2) of at least one of the rings is coated with a metal-mixed diamond-like carbon layer (8).

Abstract: The present invention provides an instrumented rolling bearing device having an outer ring, an inner ring, at least one row of rolling bodies arranged between two raceways of the outer and inner rings, and an assembly for detecting rotation parameters, this assembly having a non-rotating sensor unit and a rotating encoder member. The device allows for angularly immobilizing a non-rotating part of the device on a support while at the same time allowing relative axial movement of the device with respect to the support.

Abstract: A rolling bearing device comprises an outer ring 105 provided with an internal raceway 106 formed on its bore, an inner ring 101 provided with an external raceway 102 formed on its cylindrical exterior surface, at least one row of rolling bodies 111 arranged between the two raceways 102, 106 and at least one sealing member 121 secured to one of the rings. The sealing member 121 comprises an annular metal reinforcement 123. The device comprises a part 126 for connecting between the reinforcement 123 and the ring which supports it, the connecting part 126 being formed by a filler metal which, after melting and cooling, provides attachment, sealing and molds to the shapes of the said reinforcement and the said ring.

Abstract: An electric actuator (13) comprises a housing (7) which contains a screw mechanism (11) and an electric motor (5) which is driveably connected to the screw mechanism which provides a linear movement in response to a rotational movement of the electric motor (5), said screw mechanism (11) comprising a screw (12) and a nut (13) one of which is supported rotatably with respect to the housing (17) by means of an angular contact ball bearing (31), said angular contact ball bearing (31) comprising two pairs of contact points the working lines (40,41) of which intersect each other. One pair of contact points has a working line (41), the angle of which with respect to the axis (42) of the bearing (21) is smaller than the corresponding angle of the other working (40) line.

Abstract: A motor vehicle wheel hub bearing comprises an outer race to be mounted in a cylindrical seat formed in a suspension strut and fixed in the seat by cold rolling. The outer race has an outer cylindrical surface to be fitted into the seat. The cylindrical surface extends over the whole axial dimension of the outer race and has a greater axial dimension than that of the strut. The two axially opposite ends of the cylindrical surface comprise respective axial tubular projections adapted to be deformed radially outwardly by cold forming towards respective opposite lateral surfaces of the strut so as to fix the bearing to the strut.

Abstract: A fluid seal for installation in a high pressure environment. The seal casing comprises a casing member with an axial flange and a radial flange. The seal includes a rubber lip body and a flex neck section forming a pocket in which a synthetic resinous anti-extrusion insert is trapped. A radial flange of the casing includes on its innermost axial surface a plurality of shallow, spaced apart re-entrant formations, and the anti-extrusion insert in use overlying and covering at least the re-entrant portion of a face of the radial flange.

Abstract: A rolling bearing unit for the hub of a vehicle wheel has an 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 rotating speed of the outer race (10). The measuring device has an encoder wheel (13) in the form of a radially oriented annular disc of magnetised plastic or rubber material.