Abstract: A construction unit, such as a bearing unit, comprises at least two metal means parts (9, 10; 17, 19) which are connected to each other through a connection means (11, 18, 24, 28) which comprises a brazed or a soldered connection (14, 15, 22). The connection means also comprises at least one further connection, e.g. a welded (16, 27), screwed (30), glued or a plastically formed (23) connection.

Abstract: An axlebox-spring-unit of a railway bogie includes at least one hydraulic spring having a housing required for functionality of the hydraulic spring, and an axlebox. At least a part of the axlebox forms at least a part of the housing.

Abstract: A clutch includes a housing, an input shaft and an output shaft rotatably supported with respect to the housing, a drive gear set and a control gear set each comprising a first gear, a number of pinion gears, a carrier onto which the pinion gears are mounted, and a second gear, each pinion gear meshing with the corresponding first gear and second gear of the gear set, as well as control elements for influencing the rotation of a first or second gear of the control gear set. The first gear of the drive gear set is connected to the input shaft, the carrier of the drive gear set is connected to the output shaft and the second gear of the drive gear set is connected to the carrier of the control gear set.

Abstract: A fluid seal assembly including a specialized protective filter unit which is adapted for use with a fluid seal, as well as to the combination of a protective filter unit with an associated seal unit to form a complete seal assembly. The seal provides increased reliability, particularly in those specialized seals wherein high internal pressure and the possibility of particulate contaminants are present.

Abstract: The invention relates to a monitored roller bearing device, comprising a non-rotating race (10), a rotating race (12), at least one row of rolling elements (14) arranged between two rolling tracks (11, 13) on the rotating race (12) and non-rotating race (10) and an information detection module, which comprises a non-rotating sensor unit (29) and a rotating (12) encoder (28). Said device comprises a means for fixing the sensor unit (29) relative to a support (3), by generating an axial force between a support surface (34b) on the sensor unit (29) and a support surface (7) on the support (3), while permitting an axial displacement of the sensor unit (29) relative to the support (3).

Abstract: Connection device for a rolling contact bearing which is to be connected to a wheel hub, the connection device being suitable for connecting an inner race of the bearing to a cylindrical body of the wheel hub, and presenting a peripheral connecting outline which is obtained around the cylindrical body of the wheel hub, and a complementary connecting outline which is obtained inside the inner race, and is of a shape which complements the peripheral outline in order to render angularly integral in relation to each other the inner race and the cylindrical body; the two outlines both presenting a radius (R) of variable angular dimensions with continuity on a plane which is transverse to a rotation axis (A) of the bearing, and being both provided, in relation to the rotation axis (A), with at least one convex portion.

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: In a mounting of a pulley on antifriction bearings for driving an accessory assembly, the pulley is designed to be driven by a belt or a chain and the mounting on antifriction bearings is made as a double-row tapered roller bearing which for the two rows of tapered rollers has a common outer ring or inner ring which forms the rolling surfaces for the tapered rollers.

Abstract: A sliding bearing comprises two opposite bearing surfaces (3, 4) which enclose a gap (6) containing a lubricant film (5), said bearing surfaces (3, 4) being moveable with respect to each other in a generally parallel fashion, at least one of said surfaces (4) being provided with at least one cavity (10), said cavity having a depth (h3) which is at least equal to the lubricant film thickness. One of the length (Bp) and width (Lp) dimension of the surface area of said cavity (10) amounts to at least 100 ?m.

Abstract: Method and sensor arrangement for determining a load vector acting on a rolling element bearing (1) in operation. A plurality of N sensors (8) are provided which measure displacement and/or strain for determining displacement and/or strain in one of the elements (5, 6, 7) of the rolling element bearing (1). Furthermore, a mode shape coefficients calculator (11) is provided, connected to the plurality of N sensors (8), for determining a deformation of the element (5, 6, 7) by calculating amplitude and phase of N/2 Fourier terms representing at least one radial mode shape of the ring shape element (5, 6, 7). Also, a bearing neural network (12) is present, connected to the mode shape coefficients calculator (11), the bearing neural network (12) being trained to provide the load vector on the rolling element bearing (1) from the N/2 Fourier terms.

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: Clutch release bearing device that includes: an operating element; a rolling-contact bearing fitted with a non-rotating ring and a rotating ring and connected axially to the operating element; and an annular fixing ring provided with an axial portion mounted inside the operating element and also with an axially elastic portion whose axially opposite side from the operating element is pressed axially against the non-rotating ring, the fixing ring being able to keep the non-rotating ring axially connected to the operating element and yet allow radial movement.

Abstract: A clutch release bearing device including an operating element, a rolling bearing equipped with a non-rotating race and a rotating race secured axially to the operating element, and an annular fixing ring provided with an axial portion mounted in the operating element and with an axially elastic portion bearing axially against the non-rotating race on the axially opposite side to the operating element, the fixing ring being able to hold the non-rotating race axially secured to the operating element while at the same time allowing radial movement.

Abstract: A bearing unit comprises a radially outer stationary race (1) and a pair of radially inner rotatable half-races (2a, 2b). An intermediate annular chamber (8) is defined between the outer race (1) and the inner half-races. The intermediate chamber communicates with the outside through first air passages (5) formed in the outer race and with the inside of the bearing unit through second radial air passages (6) defined between the inner half-races. The second passages (6) are defined by an intermediate annular member (10) which is axially interposed between the inner half-races (2a, 2b) and forms one or more blade surfaces (12a, 12b) extending from the second passage (6) to the intermediate chamber (8) for capturing air from the intermediate chamber and conveying it into the second passage.

Abstract: A controlled leakage seal assembly having a first stationary portion adapted to be connected in substantially fluid-tight relation to a source of drilling fluid and a second portion adapted to be connected in substantially fluid-tight relation to a rotary portion including a washpipe. The seal includes a first housing and a stack of radially inwardly extending, spaced apart annular stators, and a second seal housing and stack of spaced apart radially outwardly extending annular rotors interleaved with one another. The seal assembly, a cartridge, permits the first and second housings to rotate relative to each other in substantially fluid-tight relation except for the drilling fluid entering an outlet region at greatly reduced pressure. In a preferred embodiment, the seal is held by a sleeve that permits the cartridge to be removed and replaced while the fluid connections to the sleeve remains.

Abstract: Steer unit for steer-by-wire comprising angle sensing means (12) for detecting the angular position of a steering wheel (11), processing means (10) connected to the angle sensing means (12) and connectable to a wheel position sensor (22), the wheel position sensor (22) being arranged for providing an output signal representing the position of steered wheels (20) of a vehicle. The processing means (10) are connectable to a steering actuator (21) mechanically coupled to the steered wheels (20), the processing means (10) being arranged for driving the steering actuator (21) dependent on the angular position of the steering wheel (11). The steer unit further comprises friction means (14) for providing a friction force on the steering wheel (11), the friction means (14) being connected to the processing means (10), and the processing means (10) being arranged for driving the friction means (14) in dependence of the wheel position sensor output signal.

Abstract: The invention relates to a sealing arrangement with at least one hole through which the sealing arrangement is adapted to be attached to the contact surface of a device which is to be sealed. One area of the sealing arrangement around the hole containing a stiffening element which extends in the manner of a perforated disk at least in this area, which has an inside area which is formed continuing axially in the direction to the contact surface, and contains an elastomer element which is joined to the inside area of the stiffening element, locking it in the radial direction. The elastomer element has a bulge to the inside.

Abstract: A pressure compensating device or arrangement for a roller arrangement which includes a central, non-rotating shaft provided with spaced apart bearings positioned adjacent opposite axial ends of the shaft and rotatably supporting at least one tubular roller segment, and where sealing arrangements are provided outside the bearings for sealing off the space inside the bearings and between the shaft and the roller segment towards the environment. The pressure compensating device includes a longitudinal bore extending from one end of the shaft and through at least a part thereof, with the bore communicating with the space between the sealing arrangements via channels. The bore is provided with a flexible member preventing direct communication between the exterior and the space between the sealing arrangements.

Abstract: Method and sensor arrangement for determining a contact force vector acting on a rolling element hearing in operation. Sensor signals are received from a plurality of sensors measuring performance characteristics of the rolling element bearing. The received sensor signals are processed to determine the contact force vector. The plurality of sensors are arranged to measure a bearing component deformation, and the step of processing comprises the step of determining the contact force vector using an inverse transformation of a finite element analysis model which describes the rolling element bearing. The finite element analysis model is simplified using at least one generalized mode shape, the at least one generalized mode shape being a mathematical description of a natural mode deformation of a component of the rolling element bearing, such as the inner or outer ring.

Abstract: In a sealing arrangement sealing at least one axial end section of a hollow shaft that is arranged in a cavity of a component, with the hollow shaft being adapted to route a fluid, a gasket is adapted to be located between the component and the shaft. The gasket is made with a sealing lip to adjoin the outer peripheral surface of the end section. The gasket also includes an axially projecting portion that projects axially beyond the end of the shaft. The axially projecting portion of the gasket surrounds a device for filtering the fluid and/or a device for determining the flow cross-section of the fluid.