Abstract: A spherical bearing assembly includes a shaft extending through an opening of an inner ring, the inner ring having a spherically curved outer surface, a clamping sleeve on the shaft, the clamping sleeve extending through the opening of the inner ring, and an outer ring having an inner surface complementary to the outer surface of the inner ring. The inner ring is mounted in the outer ring with the outer surface of the inner ring slidably supported by the inner surface of the outer ring.

Abstract: A radial bearing apparatus including a housing with a housing bore defining a radial bearing housing surface, a shaft extending through the housing bore and defining a radial bearing shaft surface, and a radial bearing contact interface between the radial bearing housing surface and the radial bearing shaft surface for bearing a variable side force applied to the shaft. The radial bearing contact interface includes an oblique section in which the radial bearing housing surface and the radial bearing shaft surface are oblique to each other when the side force is zero and progressively increase in contact in an axial direction in response to an increasing magnitude of the side force.

Abstract: A wireline system for use during drilling operations. The wireline system has a wireline assembly and a roller assembly. Both the wireline assembly and the roller assembly are positioned within a front portion of a drill rig. Described herein, in one aspect, is a wireline system for use on a drill rig. The drill rig can comprise a drilling system, and the drilling system can comprise a mast, a drill string, and a drill head configured to impart rotation to the drill string within a drilling formation.

Abstract: Provided is a sliding member, which is reduced in friction under sliding conditions of high load and high speed under an oilless condition, and is excellent in wear resistance. The sliding member includes: a shaft; and at least one intervening member, in which: the at least one intervening member is located between the shaft and a bearing, and is operable independently of the shaft; and at least one surface of the at least one intervening member on a shaft side includes a sliding surface under one of a radial load and an axial load.

Abstract: A posture control unit (contact portion) that controls a posture of a balance weight-equipped slider so that a slider portion of the balance weight-equipped slider maintains the posture parallel to an orbiting bearing is provided at a position corresponding to a central portion in an axial direction of the orbiting bearing between an eccentric direction-side side surface of an eccentric shaft portion of a rotary shaft and an inner wall surface of a slide hole facing the side surface.

Abstract: A bearing arrangement is disclosed for a drilling head, through which flushing liquid flows, of a deep drilling device, having multiple radially outer and radially inner bearing rings. Radially outer bearing rings are arranged coaxially over radially inner bearing rings, balls roll in raceways of the bearing rings, and the raceways are delimited axially on both sides by shoulders with mutually opposite shoulder surfaces. In order for a bearing arrangement to be of short axial extent and to simplify the construction, the internal diameter (Di) of the shoulder surfaces of the radially outer bearing rings and the external diameter (Da) of the shoulder surfaces of the radially inner bearing rings are dimensioned such that the shoulder surfaces perform the function of parallel radial plain bearings with a radial clearance (S).

Abstract: A self-lubricated bearing contains a first member, a second member configured to slide against the first member, and a lubricating liner disposed in a sliding contact area between the first member and the second member. The lubricating liner contains at least one structural polymer and at least one lubricant with viscosity less than 5100 centistokes. A method is also provided for making the bearings, which includes adding the at least one lubricant with viscosity less than about 5100 centistokes to one or more components of the lubricating liner during the process of making the liner or bearing. The self-lubricated bearing compositions of the invention have surprisingly long service lives versus prior art self-lubricated bearings.

Abstract: A stop device includes a motor rotor assembly including a rotating shaft, a first shift lever fixedly connected to the rotating shaft and including a first shifting part configured to rotate around an axis of the rotating shaft to form a first motion trajectory, and a second shift lever rotatably connected to the first shift lever and including a second shifting part partially within the first motion trajectory. The first shifting part is configured to drive the second shifting part to rotate around the axis of the rotating shaft to form a second motion trajectory. The stop device further includes a motor stator assembly sleeved on the rotating shaft and rotatably connected with the rotating shaft. The motor stator assembly includes a stopping boss located on a periphery of the first motion trajectory and partially within the second motion trajectory.

Abstract: A connecting rod for an internal combustion engine may include a big end passage for receiving a pin journal of a crankshaft, a small end passage for receiving a piston pin, and a beam extending between the big and small end passages. The small end passage may extend along a passage axis and be delimited by opposed edges. The small end passage may include an inner passage surface with a cylindrical surface portion having a first diameter. The small end passage may extend along the passage axis between the opposed edges. The inner passage surface may comprise profiled regions adjacent to the opposed edges and extending at least over a part of a circumference of the opposed edges. The profiled regions may begin from the cylindrical surface portion and increase into a maximum second diameter at the opposed edges. Further, a plurality of dimples may be positioned along the cylindrical surface portion of the inner passage surface.

Abstract: A lower link (13) is formed such that outer circumferential sides of both end portions of a crankpin through-hole (21) are stiffer than a center portion of the crankpin through-hole (21), i.e. a bifurcation portion of a bifurcated shape thereof. The both end portions of the crankpin through-hole (21) are formed such that inner circumferential surfaces (22a) of the both end portions are curved at a predetermined curvature in an axial direction of a crankshaft with no load input on the lower link (13). Moreover, the center portion of the crankpin through-hole (21) is formed such that an inner circumferential surface (22b) thereof is located inward of the inner circumferential surfaces (22a) of the both end portions and is straight in the axial direction of the crankshaft with no load input on the lower link (13).

Abstract: A gear carrier includes a first end plate. The gear carrier also includes a connector plate connected to the first end plate. The gear carrier also includes a second end plate. The gear carrier also includes a bushing configured to extend through the second end plate and into the connector plate to connect the second end plate to the connector plate.

Abstract: A bearing housing (1) of an exhaust-gas turbocharger (2) having a turbine-side flange (3), having a compressor-side flange (4) and having a center part (5) which is arranged between the turbine-side flange (3) and the compressor-side flange (4). The turbine-side flange (3), the compressor-side flange (4) and the center part (5) are separate components which are connected to one another in the fully assembled state by a connection device (6) or thermally or by adhesive bonding.

Abstract: An epicycloidal gear assembly for use in a vehicle seat actuator includes a planetary gear that is driven by a worm gear. The planetary gear has an outer edge surface that extends between opposed sides of the gear and has a first set of external teeth, and an inner edge surface that extends between the opposed sides and defines a central opening. The worm gear includes a gear head defining a second set of external teeth, and a gear stem extending from the gear head and passing through the central opening. An outer surface of the gear stem is configured to engage the planetary gear inner edge surface in such a way as to drive the planetary gear, and the planetary gear inner edge surface defines a smooth curve between the first side and the second side.

Abstract: The invention relates to a cleaning brush for a floor cleaner, in particular, a self-propelled and self-steering floor cleaner, including at least one brush unit having a brush body defining a brush axis and being provided with cleaning bristles and having a first end and a second end, the at least one brush unit including at the first end or in the region of the first end a torque receiver device for coupling with a drive device of the floor cleaner. To provide such a cleaning brush which can be reliably mounted on a floor cleaner in a constructionally simple way, the at least one brush unit includes a bearing device for mounting on the floor cleaner, which is arranged between the first end and the second end. The invention also relates to a floor cleaner with a cleaning brush, in particular, a self-propelled and self-steering floor cleaner.

Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).

Abstract: A damping device for a shaft in rotation around an axis of rotation parallel to a direction (A). The said damping device includes a support, a plate, a collar, and clamping means. The said support is stationary and is provided with a first opening, with the said plate being provided with a second opening and the said collar being provided with a third opening. The said shaft passes simultaneously through the said first, second, and third openings with, respectively, a first radial gap, a second radial gap, and a third radial gap, with the said third radial gap being smaller than the said first and second radial gaps. The said collar is movable with respect to the said support in a plane perpendicular to the said direction (A), with the said clamping means pressing the said plate against the said collar and the said collar against the said support.

Abstract: Bearing assemblies are provided that include a bearing having a split bearing body that includes a material such as a composite or a thermoplastic; and at least one recess configured for receiving a rotary seal assembly; and at least one rotary seal assembly comprising an energizing component. The bearing assemblies may further include at least two recesses and/or an energizing component that is an o-ring.

Abstract: Disclosed is a fan motor includes: a first bracket having a middle part through which a rotary shaft penetrates and an upper bearing insertion space to which an upper bearing is inserted to support the upper end part of the rotary shaft; an upper felt cover joined to the inside of the first bracket to seal the upper bearing insertion space; a second bracket joined to the upper side of the first bracket, the second bracket having a lower bearing insertion space which is formed at the middle part of the lower side through which the rotary shaft penetrates and to which a lower bearing is inserted to support the lower end part of the rotary shaft; and a lower felt cover joined to the lower side of the second bracket to seal the lower bearing insertion space.

Abstract: A thrust bearing assembly for supporting an end surface against an axial load, includes a first part with a chamber; a second part disposed in the chamber and having a load surface facing the end surface; and a third part fixed with the first part and spaced from the second part. A reservoir for storing lubricant is formed in the chamber between the second part and third part. A narrow passage communicates the reservoir with the load surface to allow the lubricant to flow from the reservoir to the load surface to lubricate the interface between the load surface and the end surface when the axial load rotates.

Abstract: A pressure balanced shaft seal assembly that allows a seal to dynamically respond to angular or radial misalignment of a shaft includes a fixed stator, a floating stator, and a labyrinth seal. In one embodiment, the floating stator and labyrinth seal are mounted within an annular groove formed in the fixed stator such that the floating stator and labyrinth seal may move a predetermined amount in the radial direction with respect to the fixed stator. A spherical interface between the labyrinth seal and floating stator may allow the labyrinth seal to pivot with respect to the floating stator during angular misalignment of a shaft around which the pressure balanced shaft seal assembly is mounted. A pressure balancing annular channel formed in the floating stator allows pressurized seal fluid to balance the axial pressure exerted on the floating stator by the process fluid.

Abstract: A coast-down bearing and method for a magnetic bearing system is provided. The bearing includes first, second, and third rings disposed around a shaft. The first, second, and third rings each have an inner diameter that is greater than an outer diameter of the shaft and provide a running clearance therebetween. The first, second, and third rings are eccentrically positioned with respect to each other to form a pocket for receiving the shaft during a drop, radial shock, or both.

Abstract: A bearing plate assembly for a turbine engine fuel injector includes a bearing plate 30, with an opening 80 bordered by a race 82. A swivel ball 90 nests inside the race and is rotatable relative thereto. A lock, which may be a tip bushing 108 resists disengagement of the swivel ball from the race. A fuel injector nozzle 38 extends through an opening 98 in the swivel ball. During engine operation, the ball can swivel inside the race to accommodate rotational movement of the nozzle about lateral and radial axes.

Abstract: An oil-impregnated sintered which does not damage rotating shaft and itself and has a high durability even in the case that the rotating shaft is inclined in the bearing by a large shear load applied thereto, and a method of manufacturing an oil-impregnated sintered bearing which exhibits center deviation-suppressing action of the bearing satisfactorily by accurately forming a bearing hole in an intermediate completely sintered are disclosed.

Abstract: A bearing arrangement of a shaft (2) is provided with which an annular bearing sleeve (4) is applied onto the shaft (2). At least in the axial region in which the bearing sleeve (4) is arranged, the shaft (2) includes a profiling extending parallel to its longitudinal axis (X). A corresponding engagement element (12) on the inner periphery of the bearing element (4) engages the profiling with a positive fit. At least one engagement element (12) extends in the direction of the longitudinal axis (X) of the shaft (2) only over a part of the length of the bearing sleeve (4).

Abstract: The actuator has a gear unit with a gear housing and a motor unit with a motor housing and an internally located rotor with a drive shaft, and a cylindrical bearing housing on the drive side. The bearing housing protrudes, along with a bearing and the drive shaft ducted therein, into an opening in the gear housing. The motor housing is flange-mounted, along with a drive shaft mounted therein, to the gear housing. The outside of the bearing housing and the inside of the opening in the gear housing have been geometrically mutually harmonized such that clamping points and tension-free places will form between them when the actuator has been assembled. The pretensioning force resulting therefrom produces a permanent frictional engagement between the outer circumference of the bearing and the bearing support or the bearing shell located opposite it. The operating life of an actuator of such type is increased.

Abstract: A cylindrical sliding bearing 1 can rotatably support a rotational shaft by a sliding surface 4 (inner circumferential surface). A crowning 5 having a sloped surface is formed at both ends of the sliding surface 4 in the axial direction. The crowning 5 includes a first crowning 3A formed of a sloped surface of a lining layer 3 and a second crowning 2A formed of a sloped surface of a back metal 2 positioned on the lower side of the first crowning. Unlike a conventional sliding bearing, the back metal 2 where the crowning 5 is positioned is provided as a sloped surface (2A). As compared with conventional bearings, the crowning 5 can be prevented from being unevenly brought into contact with the rotational shaft.

Abstract: A pivot bearing includes a spherical bearing body and a single-piece bearing shell. The bearing shell encloses the bearing body at least partially and creates a clearance fit between the bearing body and the bearing shell which clearance fit permits a degree of articulated freedom of the pivot bearing. The single-piece bearing shell includes a radial slot based on a wall thickness of the bearing shell and has at least one contoured bulge. At least one push-in element has a part shape corresponding to the bulge such that the part shape of the push-in element has a defined oversize with respect to the bulge of the slot. The oversize indicates a predetermined clearance fit between the bearing body and the bearing shell that defines a bearing play when the push-in element is mounted in the slot.

Abstract: An oil film bearing for rotatably supporting a shaft comprises a spherical housing having a bore in which the shaft is rotatably supported, and an outer spherical surface. A chock contains the spherical housing. The chock is internally configured with an inner spherical surface coacting with the outer spherical surface of the spherical housing to define a raceway configured to accommodate angular rotation of the shaft about a central point.

Abstract: A method of providing conditional electrical isolation for a bearing is disclosed. An inner race coupled to a first structure and an outer race coupled to a second structure are provided. An isolative means is provided for conditionally electrically isolating the first structure from the second structure.

Abstract: Bearing arrangement for a shaft rotatable around an axis of rotation comprising a first bearing for rotatably mounting an end of the shaft for rotation thereof around the axis of rotation, and a second bearing for pivotably mounting the end of the shaft for pivoting movements out of the axis of rotation, and an arrangement comprising a shaft, as well as an oscillator, each comprising the bearing arrangement.

Abstract: A compound conduit containing inner and outer conduits with apertures in the former that are angled to direct jets of fluid in a rearward direction from the inner conduit into the annular space is used to draw sludge or undesirable material from a vessel without imposing a vacuum on the system. In conjunction with the compound conduit is a rotary tube seal that allows the conduit to be mounted to an orifice in a tank wall and pivoted or rotated over a range of angles. A tubing drive mechanism grasps the tubing at locations well removed from the distal end and causes the tubing to travel in the direction of the tubing axis. The gripping members in the mechanism engage the sides of the tubing and are capable of shifting position relative to each other to accommodate changes in the curvature of the tubing.

Abstract: A joint assembly includes an inner ring, an intermediate member housing the inner ring about a joint axis and, an outer body retaining the intermediate member. The intermediate member defines two first surfaces formed by cylindrical portions having the same first axis of revolution which intersects the joint axis. The outer body defines two surfaces formed by cylindrical portions having the same second axis of revolution. When the assembly is in an assembled state, the first axis of revolution coincides with the second axis of revolution and the first and second surfaces cooperate to enable the intermediate member to rotate relative to the outer body about the first axis of revolution but prevent the intermediate member from moving parallel to the joint axis or parallel to an axis orthogonal to the joint axis and to the second axis of revolution.

Abstract: A bearing shell made of plastic material is provided for a ball and socket joint for mounting a ball and socket joint pivot mounted rotatably and pivotably in the bearing shell with at least two shell parts (1a, 1b) forming a bearing surface with an inner, hollow spherical shape is presented, wherein the shell parts form in their entirety the shape of a bearing ring (1) with an opening (2, 3) each arranged on the front sides of the bearing ring, which front sides are located opposite each other, at least one web (4) connecting the shell parts (1a, 1b) being arranged crosswise above one of the opening cross sections.

Abstract: Bearing arrangement for a shaft rotatable around an axis of rotation comprising a bearing including an inner bearing part for coupling to an end of the shaft and an outer bearing part for coupling to a mounting structure, and a retaining and pivoting element, which is connectable to the inner bearing part or the outer bearing part, wherein the retaining and pivoting element is designed for securing the end of the shaft against movement in a direction in parallel with the axis of rotation (4) in relation to the bearing and for permitting the end of the shaft to be pivoted with respect to the axis of rotation, and an arrangement comprising the bearing arrangement and the shaft, as well as an oscillator comprising said arrangement.

Abstract: A rotary machine includes a housing, and a rotating component received therein for rotation relative to the housing. A shaft imparts rotational movement to the rotating component around a first axis from an associated motive input. A bearing assembly is interposed between the rotating shaft and the housing and the bearing assembly includes a bearing member that is self-aligning. The self-aligning bearing assembly includes a bearing member having a recess extending substantially parallel to the first axis, and a journal sleeve received in the recess and interposed between the shaft and the bearing member. The journal sleeve is fixed to the shaft for rotation therewith and includes a flexible joint connection with the shaft to permit self-alignment of the shaft and bearing.

Abstract: A bearing arrangement includes a bearing for rotatably supporting a journal of a roller in a rolling mill stand, and a bearing support body with a bore for receiving the bearing. The profile of the bore in the unstressed bearing support body is configured, at least approximately, according to the negated pre-calculated profile of the bore under a load.

Abstract: An outer race for a rocker bearing includes an internal sliding layer and an external support layer, wherein the sliding layer and the bearing layer are formed from a wound composite fiber material. The outer race is identified by exactly one parting line. A rocker bearing with such an outer race and a method for its production is also provided, in which a sliding layer and a support layer of synthetic resin impregnated fibers are wound in succession onto a winding mandrel, and outer races are formed after setting on the winding body thus produced. The sliding layer and the support layer are wound onto a cylindrical winding mandrel, and the outer race is provided with exactly one parting line opening it, and sliding layer material on its inside is removed to such an extent that a partially spherical contour is obtained for receiving a complementary inner race.

Abstract: There is a requirement to provide bearings in relatively low speed non continuous situations such as with regards to turnover stands for engine and winding assembly. Previous bearings incorporating rolling elements are relatively expensive and over specified for such activities. By providing annulus members in a bearing cluster upon rocker members such that the annulus members can articulate in order to provide an appropriate bearing. Lubricating oil generally passes between the annulus members in a laminar stack such that the members can radially slide past each other to accommodate for eccentricities in a shaft supported by the bearing.

Abstract: A device for controlling a pivot of a variable-pitch blade in a stator of a turbomachine compressor is disclosed. The device for controlling a pivot of a variable-pitch blade includes a control lever and a pivot with a bottom end and a top end. The top end is connected to the control lever. The device also includes a first swivel bearing placed at the bottom end of the pivot and a second swivel bearing placed at the top end of the pivot.

Abstract: In a bearing device for a roll of a hot dipping bath, i.e., zinc pot, a sleeve is fastened to a shaft of the roll of the hot dipping bath in a continuous hot dip coating line, i.e., a continuous galvanizing line. A bush housing has a bush internally fixed to support the sleeve, and a curved annular outer surface. Also, bush housing fixed rings are fixed to both inner sides of a fixed ring housing which is associated with a rig of the hot dipping bath roll. Each of the bush housing fixed rings has a curved annular inner surface supporting the bush housing at both sides thereof and in abutment with the curved annular outer surface of the bush housing. The invention allows the steel sheet to be coated with molten metal stably and speedily with high efficiency. Also, the bush and sleeve of the bearing device are not locally worn away, thereby extending useful life of the roll.

Abstract: Bearing assembly that is of integral construction or manufacture and is capable of internal lubrication. The all metal construction gives a long lasting, easily installable, easy to lubricate, smooth ride bushing assembly.

Abstract: The invention relates to a spherical plain bearing, having an inner ring with a spherically curved outer surface and an outer ring having a spherically curved inner surface, a seal being arranged in a continuous groove in the outer ring. The seal has an annular support and rubs against the outer surface of the inner ring. The seal has two mutually spaced resilient sealing lips facing in opposite directions. The first sealing lip being oriented outwards and the second sealing lip being oriented inwards.

Abstract: A rotary machine includes a housing, and a rotating component received therein for rotation relative to the housing. A shaft imparts rotational movement to the rotating component around a first axis from an associated motive input. A bearing assembly is interposed between the rotating shaft and the housing and the bearing assembly includes a bearing member that is self-aligning. The self-aligning bearing assembly includes a bearing member having a recess extending substantially parallel to the first axis, and a journal sleeve received in the recess and interposed between the shaft and the bearing member. The journal sleeve is fixed to the shaft for rotation therewith and includes a flexible joint connection with the shaft to permit self-alignment of the shaft and bearing.

Abstract: A plain bearing has two components, each having a bearing surface; the bearing surfaces being in sliding engagement with each other. The bearing may be a spherical plain bearing having an outer ring that has a concave bearing surface and an inner ring that has a convex bearing surface. One of the bearing surfaces comprises a layer comprising tungsten carbide. One component may have spaced-apart seating surfaces for engaging a moving structure and a generally concave interior that includes an internal rib between the seating surfaces. A spherical plain bearing can be made by providing an outer ring and an inner ring includes an internal rib, and disposing the outer ring around the inner ring with the convex bearing surface engaging the concave bearing surface. The bearing may be used in a swashplate assembly.

Abstract: A load transfer arrangement is provided to act as a stabiliser for utilisation in centring rotational instabilities which may occur in rotor devices such as those within a gas turbine engine. By providing a fixed screw thread path which comprises a groove having channels and having constrictions and which define clearance crowns an acceptable eccentricity range it is possible to slow screw thread driving motion and therefore load transfer only to the positions where the rotational eccentricity enters tapers leading to the constrictions. In such circumstances an orbit thread is then progressively brought into confinement and continuous engagement with a fixed screw thread defined by crowns of channels of the fixed screw thread path defined by the continuous groove through the channels. In such circumstances wide eccentricity is allowed initially but as rotational speed reduces greater and more continuous driving motions are provided whilst avoiding excessive loading during early stage operation.

Abstract: Bearing arrangement for a shaft rotatable around an axis of rotation comprising a first bearing for rotatably mounting an end of the shaft for rotation thereof around the axis of rotation, and a second bearing for pivotably mounting the end of the shaft for pivoting movements out of the axis of rotation, and an arrangement comprising a shaft, as well as an oscillator, each comprising the bearing arrangement.

Abstract: A journal bearing which can be constructed without leading to decrease in rigidity and increase in size, in which lubrication oil can be supplied to the bearing surfaces of the pads with certainty.

Abstract: A pressure balanced shaft seal assembly that allows a seal to dynamically respond to angular or radial misalignment of a shaft is disclosed. The pressure balanced shaft seal assembly includes a fixed stator, a floating stator, and a labyrinth seal. In one embodiment, the floating stator and labyrinth seal are mounted within an annular groove formed in the fixed stator such that the floating stator and labyrinth seal may move a predetermined amount in the radial direction with respect to the fixed stator. A spherical interface between the labyrinth seal and floating stator may allow the labyrinth seal to pivot with respect to the floating stator during angular misalignment of a shaft around which the pressure balanced shaft seal assembly is mounted. A pressure balancing annular channel formed in the floating stator allows pressurized seal fluid to balance the axial pressure exerted on the floating stator by the process fluid.

Abstract: A bearing is provided comprising an elongated body including an outer surface and an inner bore. The body includes a front face and a rear face. The front face has at least one circumferential groove and the rear face has at least one circumferential groove. The inner bore and the front face groove define a first wall having a thickness. The front face groove and the rear face groove define a second wall having a thickness. The rear face groove and the outer surface define a third wall having a thickness. The first wall, second wall, and third wall form a pair of crenulations therebetween wherein the first wall thickness is greater than the second wall thickness.

Abstract: A bearing assembly comprising a housing and a ball at least partially housed within the housing. The housing comprises a race having a concave bearing surface, a sleeve surrounding the race, and a resilient member disposed between the race and the sleeve. The surfaces of the race and sleeve adjacent the resilient member and the surfaces of the resilient member preferably include at least one pair of a co-operating protrusion and recess. Alternatively, or additionally, the surfaces of the race and the sleeve adjacent the resilient member have different curvatures.