Abstract: A wind turbine gearbox, in particular planetary gearbox, has at least one gear which is mounted on an axle, wherein a sliding surface is arranged between the gear and the axle. The sliding surface is arranged on at least one layer of a deposition welded material made from a sliding bearing material. Furthermore, a method produces the wind turbine gearbox.

Abstract: A bearing unit may have a radially outer ring, a radially inner ring, a row of rolling bodies interposed between the radially outer ring and the radially inner ring, a casing inside which the rings of the bearing unit are housed. The bearing unit may further have a sealing device and a disc-like element for protecting the sealing device, made as one piece, entirely of plastic or composite material, axially external with respect to the sealing device, stably anchored in a seat of the casing and having a radial distance (d2) between a radially internal surface of the disc-like element and the radially inner ring ranging between 0.75 mm and 0.95 mm so as to block large-size external contaminants, without making contact with the radially inner ring.

Abstract: A bearing assembly for an electric motor for a vehicle, having at least one main bearing configured to support a rotational element of the electric motor, and a sacrificial bearing. The main bearing includes at least one inner ring having at least one inner raceway, at least one outer ring having at least one out raceway, and at least one plurality of rolling elements disposed between the raceways. The sacrificial bearing provides an outer ring having an outer raceway, an inner ring having an inner raceway, and a plurality of rolling elements disposed between the outer ring and the inner ring. The sacrificial bearing is provided with an electrically conductive lubricant configured to lubricate the rolling elements of the sacrificial bearing. The main bearing is provided with an isolating lubricant configured to lubricate the rolling elements of the main bearing, wherein the isolating lubricant is electrically isolating.

Abstract: A bearing assembly includes a bearing unit formed from a stationary bearing ring configured to be connected to a stationary component and a rotatable bearing ring configured to be connected to a rotatable component and a bearing carrier connected to the stationary bearing ring in a rotationally fixed manner, for example, by overmolding. The bearing carrier includes at least one notch that exposes at least one section of the stationary bearing ring.

Abstract: According to the method of the invention, a lubricant is supplied incrementally to a rotary bearing while the bearing is in operation rotating at a rotational speed. The lubricant is supplied in consecutive steps so that at each step a portion of a prescribed amount of lubricant is supplied, followed each time by an ultrasound measurement. A first ultrasound measurement is performed before the first supply step, and starting from the second supply step, each measurement result is compared at least to the previous result, in order to evaluate the bearing condition and decide on that basis whether to continue the sequence or not. Stopping the sequence is decided when the lubrication of the bearing is assessed as successful, a lubrication failure or over-lubrication.

Abstract: In an annular sliding component disposed at a relatively rotating position of a rotating machine and sliding relative to an opposed sliding component, a sliding surface is provided with a plurality of first dynamic pressure generation grooves disposed on a leakage side, having terminating ends, and generating a positive pressure and a plurality of second dynamic pressure generation grooves disposed on a sealing target fluid side, having terminating ends, and generating a positive pressure and a depth of the second dynamic pressure generation groove is shallower than a depth of the first dynamic pressure generation groove.

Abstract: A slide rail assembly includes a supporting frame, a first rail, a second rail and a third rail. The first rail is movable relative to the supporting frame. The second rail is movable relative to the first rail. The third rail is movable relative to the second rail, and the second rail is movably mounted between the first rail and the third rail. The first rail can be moved to a second predetermined position from a first predetermined position in a retracting direction relative the supporting frame. The first rail can be retained at the second predetermined position so as to shorten a length of the slide rail assembly such that the third rail can be detached from the second rail easily in a limited environment.

Abstract: A method includes separating a strip of sheet metal from a sheet metal body by a combination of punching and laser cutting, the strip having a first joint edge having at least one first alignment element and a second joint edge having at least one second alignment element complementary to the at least one first alignment element, folding a longitudinal edge portion of the strip to form a flange, bending the strip into a ring and materially bonding the first joint edge to the second joint edge, installing the ring on a radially inner circumferential surface or a radially outer circumferential surface and mounting a plurality of rolling-elements on the ring. The first joint edge and the second joint edge are formed by the punching, and side edges connecting the first joint edge and the second joint edge are formed by the laser cutting.

Abstract: An energy storage and delivery system includes one or more cableways and a cage that travels along each of the one or more cableways. The cage is coupled (e.g., fixedly coupled) to one or more cables that extend between a lower elevation and a higher elevation, the cables or steel ribbons being translated along the associated cableway by a traction motor wheel to translate the cage along the associated cableway. The system is operable to pick-up, transport and deliver with the cage a plurality of blocks from the lower elevation to the higher elevation to store energy (e.g., via the potential energy of the block). The system is also operable to pick-up, transport and deliver with the cage a plurality of blocks from the higher elevation to the lower elevation at least partially under force of gravity to generate electricity via an electric generator coupled to the traction motor wheel.

Abstract: A roller includes chamfered portions and roller inclined surfaces formed on both axial ends of a roller outer circumferential surface. When in a cross section taken along a plane including a rotation axis of the roller and a bearing central axis, an intersection angle between a tangent line of the roller inclined surface at the first position of the roller inclined surface corresponding to an end portion of a guide surface and a perpendicular line of the rotation axis is defined as ?, an intersection angle between a tangent line of the roller inclined surface at the second position corresponding to a boundary between the chamfered portion and the roller inclined surface and a perpendicular line of the rotation axis is defined as ?, and an intersection angle between the guide surface and a perpendicular line of the bearing central axis is defined as ?, ?<?<? is satisfied.

Abstract: An air-floating guide rail device includes a guide rail unit, a slider unit, and a linear motor unit. The guide rail unit includes a guide rail body and two air-floating block sets made of a material different from that of the guide rail body and each including top and side air-floating blocks. The slider unit includes a main sliding seat and two lateral sliding seats connected integrally to the main sliding seat and each having first and second guiding surfaces transverse to each other and disposed respectively adjacent to corresponding top and side air-floating blocks, and first and second air guiding passages connecting the first and second guiding surfaces to the external environment. The linear motor unit includes a stator and a mover mounted fixedly to the main sliding seat and movable relative to the stator for driving linear movement of the slider unit relative to the guide rail unit.

Abstract: A bearing for use between an outer member and an inner member that is movable relative to the outer member. The bearing includes a generally cylindrical plastic body having a plurality of undulations that form gradual radially inward and radially outward waves relative to a circular path.

Abstract: A bearing device includes a first ring and a second ring mounted for relative rotation and an insulating sleeve including a socket and an electrically insulating liner. The socket has at least one recess, and the liner has at least one protrusion extending into each of the at least one recess. The liner is overmolded on the second ring and on the socket such to connect the second ring to the socket.

Abstract: A bicycle bearing system comprising: an integrated cup, the integrated cup having an outer diameter; a plurality of rolling elements configured to abut and rotate against a first race groove located on an inner surface of the integrated cup; a second race groove configured to abut and rotate about the plurality of rolling elements, the second race groove located on an inner surface of the inner race, the inner race having an inner diameter; where the rolling elements do not have a separate outer race, but rather the inner surface of the integrated cup acts as the outer race to the rolling elements; and where the rolling elements, integrated cup and inner race are axially locked when assembled as a single cartridge unit due to the geometry of the rolling elements, first race groove and second race groove.

Abstract: A platform comprises a base platform, a linear motor is provided on the base platform and connected with an air flotation platform, a bearing platform is provided below the air flotation platform, a plurality of shock absorption assemblies are embedded in the base platform and arranged at intervals below the bearing platform, the shock absorption assembly comprises a bottom plate, shock absorption columns are symmetrically provided on an upper end of the bottom plate, a piston is cooperatively arranged in the shock absorption column, a cavity is formed between a bottom end of the piston and an inner wall of the shock absorption column, a sliding rod is fixed on an upper end of the piston, and an assembly joint is connected to a top end of the sliding rod and to a bottom end of the bearing platform.

Abstract: A two-part bearing cage for a rolling bearing includes a first cage part and a second cage part. Each cage part includes an annular base body with a plurality of bars extending axially from the annular base body and/or a plurality of complementarily designed bar receptacles. The bars of one cage part engage in the bar receptacles of the other cage part to form cage bars for defining cage pockets configured to receive the rolling elements of the rolling bearing. Each bar includes a claw and each bar receptacle includes a connection portion such that each connection portion and its corresponding claw form a snap joint.

Abstract: A bearing ring has first and second cylindrical surfaces, first and second annular side surfaces and at least one compensation element attached to the bearing ring, preferably in a groove at a junction of the first cylindrical surface and the first annular side surface. The bearing ring is manufactured from a first material having a first coefficient of thermal expansion and is configured to be connected to a component that is manufactured from a second material having a second coefficient of thermal expansion, and the at least one compensation element is manufactured from a third material having a coefficient of thermal expansion that is greater than or equal to the coefficient of thermal expansion of the second material. Also a bearing assembly including the bearing ring and the component.

Abstract: To provide an axle bearing having a low torque property and superior bearing lifetime. A hub bearing 6 is configured to rotatably support a wheel of a vehicle, and has a grease composition 10 sealed in an inner space thereof. The grease composition 10 contains a base oil and a thickener. The shear stress of the grease composition at the shear rate of 1,000-10,000 s?1 at 25° C. is 3,000 Pa or less. The viscosity of the grease composition is 1 Pas or less. The yield stress of the grease composition at 25° C. measured by a dynamic viscoelasticity analysis method using a rheometer is 1,300-3,000 Pa.

Abstract: An improved seal assembly that includes an outer cap, a ring, and a spring washer. The ring is configured to repeatedly engage with a contact element defined on a bearing ring during rotation such that the ring vibrates.

Abstract: The invention relates to a rolling bearing with two bearing rings and rolling elements running between same, and a sensor for detecting movements and/or positions of the bearing rings relative to one another, wherein the sensor is fastened to one of the bearing rings and is directed towards a measurement surface on the other bearing ring, wherein said measurement surface comprises a contour projection projecting towards the sensor and/or a contour recess open towards the sensor in the form of a groove or blind hole, which projection or groove influences the measurement signal of the sensor and the movement of which relative to the sensor transverse to the main signal direction of the sensor modifies the measurement signal of the sensor.