Abstract: Provided is a grease collection arrangement for collecting waste grease from a grease lubricated rotor blade pitch bearing of a wind turbine, whereby the grease collection arrangement includes at least one waste grease collector and multiple extraction tubes, wherein each one of the multiple extraction tubes is connected to the at least one waste grease collector and the multiple extraction tubes are configured to being connected to multiple grease outlets of the rotor blade pitch bearing, whereby the grease collection arrangement is configured such that the waste grease from the rotor blade pitch bearing can flow into the at least one waste grease collector by gravity and centrifugal forces.

Abstract: An edge seal for sealing an outer surface of a lower electrode assembly configured to support a semiconductor substrate in a plasma processing chamber, the lower electrode assembly including an annular groove defined between a lower member and an upper member of the lower electrode assembly. The edge seal includes an elastomeric band configured to be arranged within the groove, the elastomeric band having an annular upper surface, an annular lower surface, an inner surface, and an outer surface. When the elastomeric band is in an uncompressed state, the outer surface of the elastomeric band is concave. When the upper and lower surfaces are axially compressed at least 1% such that the elastomeric band is in a compressed state, an outward bulging of the outer surface is not greater than a predetermined distance. The predetermined distance corresponds to a maximum outer diameter of the elastomeric band in the uncompressed state.

Abstract: A seal configuration for an aircraft engine includes a ring shaped sealing component defining an axis. A carrier is disposed radially outward of the ring shaped sealing component and supports the ring shaped sealing component. A housing includes a shroud portion. The shroud portion fully surrounds the carrier and is maintained in a static position relative to the carrier via a bellows spring and a plurality of rotation inhibiting features. Each rotation inhibiting feature in the plurality of rotation inhibiting features includes a tab protruding radially outward from the carrier and received in a slot intruding into the shroud portion.

Abstract: A device is disclosed including a wear ring made with thermoplastic material formed as a hollow cylinder with an inside diameter and an outside diameter. The hollow cylinder may have multiple holes through at least a portion of the thermoplastic material from the inside diameter towards the outside diameter. The multiple holes may be passages between the inside diameter and the outside diameter that allow fluid under pressure to pass between the inside diameter and the outside diameter through the multiple holes.

Abstract: A toroidal roller bearing that provides an inner ring, an outer ring and a plurality of roller elements interposed in-between the inner and outer rings such that the rings rotate relative each other in relation to a rotational axle. The bearing is configured such that the inner ring and the outer ring are capable of being axially displaced and angularly misaligned relative each other in relation to the rotational axle. At least one of the inner or outer ring provides a recess in an axially extending section extending from one of its axial ends. The recess is arranged such that an axial gripping force can be generated onto the ring. In addition, the present disclosure provides a bearing arrangement that includes the bearing.

Abstract: A viscous torsional vibration damper includes: a) an annular damper housing, which bounds a damper chamber; b) an inertia ring arranged in the damper chamber; c) a bearing device, which supports the inertia ring in the damper housing and which has at least one bearing element with an axial bearing region and/or a radial bearing region, d) a shear gap between the inertia ring and the damper housing, which shear gap is filled with a viscous fluid, e) wherein a plurality of the axial bearing segments and/or a plurality of the radial bearing segments is circumferentially distributed on the at least one bearing element.

Abstract: An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the outer surface of the bearing's outer ring and the opposing inner surface of the planet gear and includes an annular gap. The support pin and/or outer ring include oil feed holes that open into the respective annular gap(s).

Abstract: A lower electrode assembly useful for supporting a semiconductor substrate in a plasma processing chamber includes a temperature controlled lower base plate, an upper plate, a mounting groove surrounding a bond layer and an edge seal comprising an elastomeric band having an outer concave surface in an uncompressed state, the band mounted in the groove such that upper and lower ends of the band are axially compressed and a maximum outward bulging of the band is no greater than a predetermined distance.

Abstract: As seal assembly for a ram assembly is provided. An elongated ram extends through the seal assembly. The seal assembly includes a housing body, a plurality of seals and a retaining, and compression, device. The seals, as well as a male energizer and a female energizer, each have a split body. In this configuration, the seals and energizers may be replaced without removing the seal assembly housing body and retaining device from about the ram. This further allows for the ram to remain in place during seal replacement. That is, the split seals may be separated an placed about the ram. Once in place, the ends of the split seal are joined at an interface. The retaining/compression device compresses the seals so that the interface is sealed.

Abstract: A shaft support and lubrication system can include two vise bearings, a lantern ring, and two or more sets of packings. The vise bearings can be rigid cylinder tubes. The lantern ring can be a flexible cylindrical tube with one or more outer grooves on an outer diameter, one or more inner grooves on an inner diameter, and one or more through holes from either the outer diameter or the one or more outer grooves to either the inner diameter or the one or more inner grooves. When arranged coaxially and installed on a shaft, the shaft support and lubrication system provide physical stabilization and provide lubrication or cleaning solution to the shaft.

Abstract: To address the problem of flush fluid leakage under normal operating conditions in rotary machinery, an improved pack-box has been conceived. The pack-box has a rotary bearing concentrically disposed within the pack-box, wherein a circumferential segment of the rotary bearing is circumferentially fixed within the pack-box. The pack-box further comprises a wall-step that defines at least a first thermal expansion channel and an inner wall that defines at least a second thermal expansion channel.

Abstract: A bearing assembly for supporting a shaft comprising a support cartridge, a seal and a spacer is provided. The seal may be a multi-component seal including an outer ring and an inner sleeve, which rotates with the shaft. The seal's outer ring may have a first inwardly projecting annular lip, a second inwardly projecting annular lip and an annular groove defined between the first lip and the second lip. The seal's inner sleeve may have a peripheral flange retained in the outer ring's annular groove. The spacer is adapted to axially locate the inner sleeve's flange. Particularly, the spacer is configured for locating the inner sleeve's flange in the groove of the outer ring so that the flange does not contact either the first lip or the second lip during operation. The spacer may axially locate the inner sleeve such that the inner sleeve's collar contacts an inwardly-extending sealing ring.

Abstract: A system for providing sealed shaft bearing is disclosed. The system can include housing and one or more end caps. The end caps can house one or more seals and one or more bearings for supporting a shaft. The housing can be watertight to prevent water from infiltrating the housing and to prevent lubricant, if any, from escaping the housing into the environment. The system can use a multi-piece design to facilitate repair and maintenance. The system can be easily retrofitted into systems, such as marine systems, that use conventional plain shaft bearings.

Abstract: An apparatus for sealing a fan drive shaft in a vacuum heat treating furnace is disclosed. The sealing apparatus includes a housing having an annular body and a central opening. An inflatable first seal surrounds the central opening of the annular body. A second seal surrounds the central opening and is adjacent to the inflatable first seal. The sealing apparatus also includes a channel formed in the annular body adjacent to the second seal for conducting a purging fluid into the central opening. A means for injecting the purging fluid into the central opening is operably connected to the channel. A vacuum heat treating furnace and a fan drive system incorporating the sealing apparatus are also described.

Abstract: A bush assembly comprising a component having a bore, a bush fitted in the bore and having a flange that extends radially outwardly over a surface of the component surrounding the bore, and a seal assembly for sealing the interface between the flange and the surface of the component, wherein the seal assembly includes a seal member and a layer of sealant between the seal member and the interface between the flange and the surface of the component. Also a method for sealing a bush, a kit of parts for forming a bush assembly, and a clamping tool for forming a bush assembly.

Abstract: The invention pertains to a bearing device used for a connecting part of a construction machine. The bearing device has: a boom having a boss part; an arm having left and right brackets that sandwich the boss part from the left and right sides thereof; a bush that is retained by an inner peripheral side of the boss part; a sealing that is disposed between the bush and the left and right brackets and that prevents a lubricant from leaking out of the bush; a thrust plate inserted between the left and right brackets and the boss part; and a coupling pin that penetrates and is inserted through the left and right brackets and the bush. The thrust plate has a partially cut out annular shape and an angle of a cut-out portion in the circumferential direction is less than 180° at an inner peripheral portion.

Abstract: A guide and sealing device a shaft in an orifice in a casing in a turbine engine, the device including a carbon gasket mounted around the shaft including a ring secured to the shaft and having an annular friction face rubbing against a carbon annulus mounted in a support bushing fastened to the casing, the ring presenting a cylindrical wall that is centered and guided in rotation in a cylindrical wall of the support bushing so as to form a smooth bearing for guiding the shaft.

Abstract: A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump or a piston-driven valve, or between the steam lance and fixed steam tube in a sootblower. The assembly includes at least a pair of outer substantially rigid cylindrical bearings having an inner bore to be positioned over the cylindrical member and at least one complimentary flexible textile packing ring substantially comprised of carbon disposed between the two outer bearing members. In assemblies including an additional bearing, the additional bearing is surrounded by at least one flexible packing on each side. The inner bore of the bearing members provides a bearing surface for eliminating whip of the moving elements in the device.

Abstract: A shaft support and lubrication system can include two vise bearings, a lantern ring, and two or more sets of packings. The vise bearings can be rigid cylinder tubes. The lantern ring can be a flexible cylindrical tube with one or more outer ridges on an outer diameter, one or more inner ridges on an inner diameter, and one or more through holes from either the outer diameter or the one or more outer ridges to either the inner diameter or the one or more inner ridges. When arranged coaxially and installed on a shaft, the shaft support and lubrication system provide physical stabilization and provide lubrication or cleaning solution to the shaft.

Abstract: In a mud-lubricated bearing assembly for a downhole motor, a mechanical seal is provided between the mandrel and the lower end of the bearing housing to prevent discharge of drilling fluid (mud) from the bearing assembly into the wellbore annulus. The mechanical seal is effected by mating wear-resistant annular contact surfaces provided on the mandrel and the bearing housing, with biasing means preferably being provided to keep the contact surfaces in sealing engagement during both on-bottom and off-bottom operational modes. The diverted drilling fluid passing through the bearings is redirected into the bore of the mandrel via ports through the mandrel wall to rejoin the main flow to the drill bit, such that substantially all of the drilling fluid flows through the bit.

Abstract: A sliding bearing 1 includes: a synthetic resin-made upper casing 2 which is fixed to a vehicle body side via a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 and on which a spring bearing surface for a suspension coil spring is formed; a synthetic resin-made sliding bearing piece 5 disposed in an annular space 4 between the upper casing 2 and the lower casing 3; and an annular inner seal member 8 and an annular outer seal member 9, both made of a synthetic resin, for respectively sealing an annular gap 6 on an inner peripheral side in a radial direction X and an annular gap 7 on an outer peripheral side in the radial direction X between the upper casing 2 and the lower casing 3, the annular gap 6 and the annular gap 7 allowing the annular space 4 to communicate with the outside.

Abstract: A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump and between the steam lance and fixed steam tube in a sootblower. The assembly includes at least a pair of outer substantially rigid cylindrical bearings having an inner bore to be positioned over the cylindrical member and at least one complimentary flexible textile packing ring disposed between the two outer bearing members. In assemblies including an additional bearing, it is surrounded by at least one flexible packing on each side. The inner bore of the bearing members provide a bearing surface for eliminating whip of the moving elements in the device.

Abstract: A system for providing sealed shaft bearing is disclosed. The system can include housing and one or more end caps. The end caps can house one or more seals and one or more bearings for supporting a shaft. The housing can be watertight to prevent water from infiltrating the housing and to prevent lubricant, if any, from escaping the housing into the environment. The system can use a multi-piece design to facilitate repair and maintenance. The system can be easily retrofitted into systems, such as marine systems, that use conventional plain shaft bearings.

Abstract: A spherical plain bearing and method of assembling the same is disclosed. The bearing has an outer ring having a bore, a concave surface, and at least one fracture. The bearing further includes an inner ring having a convex surface. The convex surface is in sliding disposition with the concave surface when the inner ring is disposed in the bore. The bearing has a groove in a face of the outer ring radially outside a first opening of the bore. The bearing further includes a band coupled to a portion of the outer ring defining the groove. The band retains the outer ring around the inner ring when the inner ring is disposed in the bore.

Abstract: A bearing cooling structure includes a metal base seat and a plastic bearing cup. The metal base seat has a raised section and an extension section. The plastic bearing cup encloses the raised section and has an inner circumference defining a bearing hole. The extension section horizontally extends from the raised section toward a center of the plastic bearing cup. The extension section has a free end and an upper surface positioned in the bearing hole. A bearing is received in the bearing hole and disposed on the extension section. A bottom face of the bearing is in contact with the upper surface of the extension section. Accordingly, the heat of the bearing can be transferred (conducted) through the extension section to the metal base seat to be dissipated. A fan with the bearing cooling structure is also disclosed.

Abstract: A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump and between the steam lance and fixed steam tube in a sootblower. The assembly includes at least a pair of outer substantially rigid cylindrical bearings having an inner bore to be positioned over the cylindrical member and at least one complimentary flexible textile packing ring disposed between the two outer bearing members. In assemblies including an additional bearing, it is surrounded by at least one flexible packing on each side. The inner bore of the bearing members provide a bearing surface for eliminating whip of the moving elements in the device.

Abstract: An apparatus includes a first panel having a first side and a second side and defining a first hole. The apparatus also includes a second panel having a third side and a fourth side and defining a second hole. A seal assembly extends from the first panel to the second panel and through the first and second holes. The seal assembly includes a first wall that defines a passageway from the first hole to the second hole, and a second wall that surrounds the first wall and cooperates with the first wall to define a chamber therebetween. The seal assembly forms a first seal around the first hole and a second seal around the second hole.

Abstract: A rotating hub and fixed spindle assembly with first and second fluid dynamic journal bearings and first and second fluid dynamic thrust bearings for a disc drive memory system has a pump seal and a radial ring seal at a first axial terminus for lubricant containment, and a capillary seal and a labyrinth seal at a second axial terminus for lubricant containment and storage. Lubricant fluid pressure differences between first and second seals are minimized through one or more lubricant fluid communicating channels in the hub assembly, in order to minimize lubricant fluid loss through a seal. Lubricant fluid can also be purged of any air bubbles by lubricant fluid circulation through the channel.

Abstract: A bearing assembly includes an inner member having an outer engagement surface and an outer race. The outer race has an inner surface defining a first end and a second end and an inner engagement surface therebetween, the inner engagement surface is positioned on the outer engagement surface of the inner member. A first annular groove is formed in the inner surface, proximate one of the first end and the second end. A second annular groove is formed in the inner surface and is positioned axially inward from the first annular groove. An external seal is positioned in first annular groove and slidably engages the inner member. An internal seal is positioned in the second annular groove and slidingly engages the inner member.

Abstract: A sliding bearing structure for a shaft member includes: a shaft member; a bearing member rotates relative to the shaft member; an oil supply space to which lubrication is supplied between sliding surfaces of the shaft member and the bearing member; two annular grooves formed in a circumferential direction in an inner peripheral surface of the bearing member; and two annular seal members formed as separate pieces from the shaft member and the bearing member, and arranged in the annular grooves between the shaft member and the bearing member. Each annular seal member is formed in plural, and is made of material having a thermal expansion coefficient such that an inside diameter of the annular seal member is smaller than an inside diameter of the bearing member at a low temperature, and is the same as or larger than the inside diameter of the bearing member at a high temperature.

Abstract: A sealed spherical bearing includes a ball disposed in a race, an annular seal extending between the race and the ball, and a retainer secured to the seal. A retainer first leg axially outward facing surface is secured to a seal first leg axially inward facing surface, and a retainer second leg radially inward facing surface is secured to a seal first leg radially outward facing surface. The retainer and the seal are separately formed elements. The retainer and the seal secured thereto is press-fit into a first annular groove of the race such that a first groove radially inward facing surface engages a retainer second leg radially outward facing surface, a first groove axially outward facing surface engages a retainer first leg axially inward facing surface, and the retainer is fixed relative to the race.

Abstract: According to one embodiment, a bearing is situated between a pitch link and a swashplate or a hub. The bearing comprises an outer housing having a first opening therethrough, an elastomeric bearing adjacent the housing inside the first opening and having a second opening therethrough, and an inner housing adjacent the elastomeric bearing inside the second opening and having a third opening therethrough. The inner housing comprising a first inner surface and a second inner surface defining the third opening. A first member is adjacent the first inner surface inside the third opening having a fourth opening therethrough. A second member is adjacent the second inner surface inside the third opening having a fifth opening therethrough coaxial with the fourth opening.

Abstract: A guiding and sealing unit for a rod of a shock absorber, including a bushing, and a sealing assembly pressed into a cup-shaped seat on one end of the bushing facing the inside of the shock absorber body. The sealing assembly includes a sealing ring and an annular sealing lip that contacts the rod, a metallic reinforcing structure having a flange-shaped portion that abuts the end of the bushing and a sleeve-shaped portion. A reinforcing ring snappingly mounted on the sealing ring on a side opposite to the lip, engaged on the rod, and made of a low friction coefficient material that is more rigid than the material used to form the sealing ring and which axially extends in the seat flanking at least in part, the sleeve-like portion of the reinforcing structure.

Abstract: A rotating hub and fixed spindle assembly with first and second fluid dynamic journal bearings and first and second fluid dynamic thrust bearings for a disc drive memory system has a pump seal and a radial ring seal at a first axial terminus for lubricant containment, and a capillary seal and a labyrinth seal at a second axial terminus for lubricant containment and storage. Lubricant fluid pressure differences between first and second seals are minimized through one or more lubricant fluid communicating channels in the hub assembly, in order to minimize lubricant fluid loss through a seal. Lubricant fluid can also be purged of any air bubbles by lubricant fluid circulation through the channel.

Abstract: A bearing apparatus includes a bearing portion; a shaft; an upper thrust portion; a rotor cylindrical portion extending downward from an outer edge portion, and arranged radially outward of the bearing portion; and an annular seal cover fixed to an outer circumferential surface. A seal portion having a surface of lubricating oil defined therein is defined in a seal gap defined between an inner circumferential surface of the rotor cylindrical portion and an outer circumferential surface of the bearing portion. The seal cover includes a fixing portion fixed to the outer circumferential surface of the rotor cylindrical portion; and an inner flange portion extending radially inward from the fixing portion below a lower end portion of the rotor cylindrical portion, and having an inner circumferential portion arranged opposite to the outer circumferential surface of the bearing portion to define a vertical gap together with the outer circumferential surface.

Abstract: A thrust sliding bearing 1 includes: a synthetic resin-made upper casing 2; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; a synthetic resin-made thrust sliding bearing piece 5 disposed in an annular space 4 between the upper casing 2 and the lower casing 3; and a synthetic resin-made seal member 8 for sealing respective other end portions, communicating with the outside, of a gap 6 on an inner peripheral side and a gap 7 on an outer peripheral side in a radial direction A between the upper casing 2 and the lower casing 3, the gap 6 and the gap 7 respectively communicating with the annular space 4 at their one annular end portions.

Abstract: A guide and sealing device a shaft in an orifice in a casing in a turbine engine, the device including a carbon gasket mounted around the shaft including a ring secured to the shaft and having an annular friction face rubbing against a carbon annulus mounted in a support bushing fastened to the casing, the ring presenting a cylindrical wall that is centered and guided in rotation in a cylindrical wall of the support bushing so as to form a smooth bearing for guiding the shaft.

Abstract: A bearing unit for a disk drive device is formed by a sleeve concave portion and a shaft concave portion, and is provided with a capillary seal portion in which the gap between the sleeve concave portion and the shaft concave portion is increased in diameter toward the hub side of the sleeve. Assuming that: the outer circumferential diameter at the tilt starting end on the base member side of the shaft concave portion is D0; the inner circumferential diameter at the tilt starting end on the hub side of the sleeve concave portion is D1; the facing outer circumferential diameter of the shaft concave portion, which faces, in the radial direction, the inner circumference at the tilt starting end of the sleeve concave portion, is D2; and the diameter of the most concave inner circumference of the sleeve concave portion is D3, D2 is smaller than D0, D3 is larger than D1, and the difference between D3 and D0 is larger than that between D0 and D2.

Abstract: A bearing device comprises a bearing fixing base, a hub, an oil seal bush, and an oily felt. The bearing fixing base is fixedly joined with a tubular support; the hub is fixedly joined with a rotor spindle which extends into the tubular support and rotates with respect to the tubular support; the oil seal bush is disposed between the spindle and the tubular support with a receiving clearance being defined between the oil seal bush and the tubular support; the oily felt is disposed in the receiving clearance. The oily felt supplies lubrication oil to lubricate the oil seal bush for prolonging a life span of the bearing device.

Abstract: There is provided a bearing assembly including: a sleeve supporting a shaft; a stopper coupled to the shaft to thereby prevent excessive floating of the shaft; a base cover maintaining a clearance with the stopper to thereby provide a space in which oil is filled and coupled to the sleeve; and a flow prevention part protruding from at least one of the stopper and the base cover to thereby prevent a flowing of the oil.

Abstract: An exemplary bearing cartridge assembly includes an inner sleeve. An outer housing is supported for rotation relative to the inner sleeve. A bearing member within the outer housing and received about the inner sleeve facilitates rotation of the outer housing relative to the inner sleeve. The bearing member has an axial dimension (e.g., a width) that is smaller than an axial inner dimension of the outer housing. The bearing member is positioned relative to the inner sleeve and the outer housing to provide a first lubricant space between one side wall of the outer housing and the bearing member and a second lubricant space between an opposite side wall of the outer housing and the bearing member. There is at least one through passage between the first and second lubricant spaces to allow lubricant to move between them.

Abstract: A sliding bearing structure for a shaft member includes: a shaft member; a bearing member rotates relative to the shaft member; an oil supply space to which lubrication is supplied between sliding surfaces of the shaft member and the bearing member; two annular grooves formed in a circumferential direction in an inner peripheral surface of the bearing member; and two annular seal members formed as separate pieces from the shaft member and the bearing member, and arranged in the annular grooves between the shaft member and the bearing member. Each annular seal member is formed in plural, and is made of material having a thermal expansion coefficient such that an inside diameter of the annular seal member is smaller than an inside diameter of the bearing member at a low temperature, and is the same as or larger than the inside diameter of the bearing member at a high temperature.

Abstract: A sealed spherical bearing is disclosed, having a race and a ball disposed therein. A seal between the race and the ball inhibits the ingress of contaminants into the spherical bearing. The seal has a first edge. The first edge is secured to a retainer, which is press-fit into an annular groove defined by the race. The ball and the race are rotatable relative to each other. A second edge of the seal is seated in a second annular groove defined the ball. A lubricant is disposed inside the second annular groove. A convex surface of the ball and a concave surface of the race form a sliding surface. A self-lubricating treatment is applied to one or more of the sliding surfaces.

Abstract: The invention relates to a shaft bearing assembly (1), comprising a machine part (2), in which a shaft (5) is rotatably mounted on two axially spaced bearing points (6, 7), wherein the first bearing point (6) is arranged in a stationary manner and the second bearing point (7) can be moved relative to the first bearing point (6) such that a movement of the second bearing point (7) causes a pivoting of the shaft (5) about a rotational axis (8) in the region of the first bearing point (6).

Abstract: In an oil-sealed bearing assembly in the bearing section of a mud motor, in which a mandrel is rotatably disposed within a cylindrical housing, a cylindrical sleeve is disposed coaxially and rotatably around the mandrel, with the sleeve being non-rotatably mounted to an inner surface of the housing, thereby forming an annular piston chamber forming part of a generally annular oil reservoir. The sleeve provides radial support to the mandrel along the length of the piston chamber by virtue of the flexural stiffness of the sleeve. The mandrel rotates within the sleeve, with a radial bearing being provided between the sleeve and the mandrel. An annular piston is axially movable within the piston chamber in response to variations in the volume of oil in the reservoir. The piston slides within the piston chamber without rotation relative to either the housing or the sleeve.

Abstract: A leakproof structure of a shaft tube comprises a shaft tube, a bearing, a shaft and a leakproof plate. The shaft tube includes a center hole, an upper section adjacent to an open end of the shaft tube and a lower section having an inner diameter smaller than that of the upper section. The bearing received in the lower section includes a longitudinal hole. The shaft rotatably mounted into the bearing includes an annular groove formed in an outer periphery thereof to form a neck of the shaft. The leakproof plate fixed in the upper section includes a through-hole with a diameter smaller than the outer diameters of the two sections of the shaft, with an inner edge of the leakproof plate being in the annular groove.

Abstract: A bellows bearing is a tube body formed by coaxially wrapping a wire. The tube body has a plurality of consecutively arranged bumps and recesses. End edges of the plurality of bumps form a contact portion, and the plurality of recesses forms an oil storage portion. Thus, when a mini rotating device using the bellows bearing rotates, a desirable lubricating, shock-resistant, and debris-removal effect can be achieved, thereby increasing the service life of the mini rotating device.

Abstract: A bearing arrangement for a shaft, particularly a driveshaft (1) in a transmission housing (5) of an automatic transmission with an actuating piston (6) of a shifting element arranged inside the shaft. At least one self-sealing bearing is provided at least on the side of the transmission housing (5) remote from the motor to support the shaft.

Abstract: An object is to reduce manufacturing cost of a housing, and enable to disuse an adhesive in fixation portions between a housing and a bearing sleeve and the like. A housing 7 is made of resin material, which comprises a liquid crystal polymer (LCP) as crystalline resin blended with carbon nanotubes in a blending ratio of 2 to 35 vol % as a conductive filler, by injection molding. A bearing sleeve 8, which is inserted into the inner peripheral surface 7c of the housing 7, is secured to the housing 7 by ultrasonic welding.

Abstract: A rock drilling machine equipped with an axial bearing having at least one axial piston for setting the axial position of a drill shank and for damping stress pulses returning from the rock. The axial bearing includes a module that is detachable in one piece from one installation direction. The axial bearing module includes all necessary seals, bearing surfaces, and a module frame. Supporting forces caused by the operation of the axial bearing are transmitted of support members in the module frame directly to the body of the rock drilling machine, which is a uniform piece at least at the axial bearing.