Abstract: A cage for a roller bearing comprises a base body with a plurality of pockets for the reception of the roller elements of the roller bearing. At least a part of the surface of the base body is coated with a layer consisting of or containing fullerene-like carbon nitride (FL-CNx), wherein an inter-layer of chromium (Cr) or aluminium (Al) or molybdenum (Mo) or titanium (Ti) or tungsten (W) or a diamond-like coating (DLC) or a metal-mix diamond-like coating (Me-DLC) is arranged between the surfaces of the base body and the layer consisting of or containing fullerene-like carbon nitride.

Abstract: Sealing device (1) for a wheel hub group (2) which is connected to a differential device, and which is provided with a rolling contact bearing (3), the sealing device being provided with a first shield (6) which is shrink-fit onto an inner race (4) of the rolling contact bearing (3), and an encoder (7) which is integral with the first shield (6) in order to generate a signal for reading the functioning kinematic parameters of the wheel hub group (2), and is also provided with a second shield (8) which is shrink-fit onto an outer race (5) of the rolling contact bearing (3) in a position which is opposite to and which is also external to the inner shield; a static sealing element (12) is integral with the second shield (8), and is also arranged in contact with a containing box of the differential in order to define a watertight chamber (14) in order to provide a reading surface of a reading sensor (11) which can read the signal which is generated by the encoder itself.

Abstract: A sealing device for a bearing of the hub of a motor vehicle wheel comprising a stationary race (1) and a rotatable race (2), each defining respective channels (6, 7) for the passage of pressurized air. The sealing device (20) is to be mounted between the rotatable race and the stationary race in order to delimit laterally and hermetically seal an annular space or chamber (14) defined between the bearing races (1, 2) and communicating with the channels (6, 7). The sealing device (20) comprises two sealing units (9) axially facing one another. Each sealing unit (9) comprises an annular reinforcement (10) having an axial cylindrical wall (10a) for mounting to a first bearing race (1) and a radial wall (10b) for reinforcing a flexible gasket (11). The two sealing units (9) are coupled by means of an annular element (21) having a plurality of radial air passages (22).

Abstract: A seal assembly having a seal bumper wall with a series of pyramid shaped formations lying on the bumper wall. The formations cause their apex portion to wear down rapidly in use, while the remainder of the pyramids remain and act as slingers and/or produce a convection effect to reduce temperature along the sealed area. In another embodiment, there are two each pyramid shaped formations located on each of several thrust bumpers, which are held in position by a retainer.

Abstract: A quick-releasing linear actuator suitable for electric hospital beds includes a motor, a transmission device, a clutch device and a pulling arm device. With the pulling of the pulling arm of the pulling arm device, a clutch and a clutch base of the clutch device can be disengaged, such that the screw of the transmission device will not be impeded by the worm gear. When a force is exerted to the telescopic rod of the transmission device, the screw can rotate by itself to rapidly lower the telescopic rod, thereby to achieve the rapid releasing of the hospital beds.

Abstract: A device for attachment to a motor vehicle wheel includes an arrangement which, during movement or driving of the motor vehicle, detects vibrations which occur, evaluates the vibrations for an incipient fault state of a wheel bearing of the vehicle wheel, and delivers a signal when the monitoring or evaluation yields or indicates the incipient fault state.

Abstract: A bearing assembly for radial and axial support of a shaft part relative to a housing includes two radial antifriction bearings located at an axial distance to one another on the shaft part and two axial antifriction bearings located at an axial distance to one another on the shaft part. To create better support, the bearing assembly has an outer bearing ring which is inserted into a hole of the housing and which, made as a one-piece component, has tracks for the two radial antifriction bearings and for the two axial antifriction bearings.

Abstract: A wheel monitoring apparatus includes a measuring and evaluation unit designed to be fastened to the wheel in the region of at least one wheel nut or bolt of the wheel. The wheel monitoring apparatus includes at least one sensor for detecting a characteristic variable for a state of a wheel bearing and at least one sensor for detecting a tire pressure of a tire of the wheel.

Abstract: An earth bit includes a cone rotatably mounted to a shaft with a hub unit and thrust roller bearings. The hub unit is moveable between mounted and unmounted positions on the shaft, as a single unit, in a repeatable manner. The hub unit includes a pair of roller bearings positioned between inner and outer races. The outer race includes a recess extending around its outer periphery. A sealing structure is slidingly engaged with the recess to provide a seal between the cone and shaft.

Abstract: The light articulation ball-joint comprises a metal inner ring and a metal outer ring, provided respectively with a spherical outer surface and a spherical inner surface. The ball-joint also comprises a first contact layer, applied to the spherical surface of one of the rings, and a second contact layer, applied to the spherical surface of the other ring. According to the invention, the first contact layer has a hardness which is less than the hardness of the second contact layer and a thickness which is greater than the thickness of the second contact layer, the first contact layer further being adapted to release particles of solid lubricant by friction with the second contact layer.

Abstract: Method for manufacturing improved contact surfaces, particularly contact surfaces in rolling bearing components such as rings or rolling bodies, is disclosed. The method subjects a surface of the rolling bearing component to a hard turning machining operation for forming by means of a hard turning tool a rolling or sliding contact surface. The hard turned surface is subjected to a finishing operation to remove the basic turning groove structure in a light machining way such that micro-pockets created in the hard turning operation remain. The hard turning tool during the hard turning machining operation is subjected to a vibration, substantially in the longitudinal direction of the tool, thereby creating in a controlled manner in the hard-turned surface a number of indentations, which are substantially arc-shaped in cross-sectional direction, prior to the finishing operation. Indentations improve lift-off and lubricating properties during later operation of the rolling bearing.

Abstract: A device for attachment to a motor vehicle wheel includes an arrangement which, during movement or driving of the motor vehicle, detects vibrations which occur, evaluates the vibrations for an incipient fault state of a wheel bearing of the vehicle wheel, and delivers a signal when the monitoring or evaluation yields or indicates the incipient fault state.

Abstract: A rotatable flanged hub for the wheel of a motor vehicle forms, in a single piece: a cylindrical central part adapted for being coupled to a bearing unit; a flange extending in a radially outer direction starting from an end of the cylindrical part; a tubular appendix projecting from the axially outer side of the hub beyond the flange and joined to the central part by means of a root portion; and a cylindrical inner cavity defined by an inner cylindrical surface of the appendix and a radial surface of an axially outer end of the central part. A circumferential groove extends into the root portion starting from the cylindrical inner cavity in order to increase flexibility of the tubular appendix with respect to the central part of the hub.

Abstract: A device includes a functional element of an internal combustion engine and a carrier fastened to a load-bearing structure on or in the internal combustion engine, preferably by a plurality of fastening elements. In order to obtain insensitiveness with respect to thermal deformations, the invention provides that the connection between the functional element and carrier is formed by means of at least one connecting wall which is composed of elastomeric material or of rubber material. The connecting wall extends at least generally parallel to and is spaced from a holding section of the carrier so as to define an air gap between the connecting wall and the carrier holding section.

Abstract: This anti-rotation lock device (2) for preventing movement in an assembly comprising an endpiece (210) carrying a thread (211) screwed into a tube (200), together with a nut (280) suitable for being screwed on the endpiece (210) comprises: a first washer (220) provided with an anti-rotation lock component; and a second washer (240) comprising at least one key. The first or the second washer (220, 240) includes a lug, and the faces of the first and second washers (220, 240) comprise means for locking them mutually against rotation. The device further comprises a third washer (260) including a member (268, 269) for locking the nut (280) against rotation. The outer periphery of the third washer (260) comprises a tab (265) adapted to co-operate with said lug (225) so as to lock the first or the second washer (220, 240) provided with the lug (225) against rotation relative to the third washer (260).

Abstract: To obtain an improved possibility of establishing the causes of failure in linear drive devices with an electric drive, operational data logging means shall be provided for logging data in connection with operational loads and/or an operating state of the electric drive, which occur over a certain period of time, wherein the operational data logging means can be connected to the power connection means for data logging. Means for storing data, which are based on a plurality of measurements of the same measured variable, which measurements are performed one after another, make it possible to log and evaluate data over a long period of time, preferably during the entire service life of the linear drive device. The measurements are carried out during the use of the linear drive device (14) during which it is in a loaded state.

Abstract: Arrangements may include a bearing assembly, the bearing assembly having a bearing housing ring, the housing ring having an inner bore, at least a portion of the inner bore including a dry lubricant coating; a bearing, the bearing including: an outer race, the outer race having an outer surface received within the inner bore of the housing ring, at least a portion of the outer surface including a chromate anti-corrosive coating; and an inner race, the inner race having an inner race bore, and outer surface, and two radial end surfaces each extending between the inner race bore and the outer surface, at least a portion of the inner race bore, outer surface, and radial end surfaces include the chromate coating disposed thereon. Associated methods and arrangements are also described.

Abstract: A plug assembly for the oil gallery of an internal combustion engine. The engine has a cylindrical passage leading from the interior to the exterior thereof. There is a circumferential groove in the passage. The plug includes a seal piece and an outer skirt portion subdivided into a piece having an outer end portion with a radial flange for snugly engaging said engine block, and an axially extending free end portion with a radially extending locking tab porting engaging the circumferential groove. The locking tab can move into and out of registration with the circumferential groove.

Abstract: A workpiece is designed for rolling stresses and includes a body having a core zone and a carbonitrided surface zone which surrounds the core zone. The workpiece body is formed of a fully hardening steel. The core zone has a bainite microstructure as its main constituent. The surface zone of the workpiece has a mixed microstructure comprising martensite and bainite and the martensite in the surface zone constitutes a proportion of at least twenty percent by volume.

Abstract: Sealing device (1) for rolling contact bearings provided with a shield (2) which may be installed onto an outer race (11) of the bearing (12), and presenting a lateral cylindrical wall (21) which is suitable for being arranged in a radially intermediate position between an encoder (16) and a reading sensor (17) of the bearing (12), and a passing window (29) which is obtained through the lateral cylindrical wall (21) in order to permit the sensor (17) to face the encoder (16); a cover (40) made of plastic material being arranged in such a way as to close the window (29), and being selectively mobile in order to effect variations in pressure between the inside and outside of the bearing (12) between two extreme operating positions in at least one of which the cover (40) is suitable for substantially sealing the window (29).