Abstract: A support assembly for a turbocharger defining a system axis, the support assembly comprising a housing assembly and a bearing assembly. The housing assembly comprises a housing defining at least one support groove and a seal plate. The bearing assembly comprises an outer sleeve defining at least one support tab. The at least one support tab is sized and dimensioned such that, when the outer sleeve is supported by the housing member in a desired orientation, the support tab is within the support groove such that movement of the outer sleeve along the system axis relative to the housing member is inhibited. The seal plate may be configured to define at least one anti-rotation projection arranged relative to the support tab to inhibit rotation of the outer sleeve about the system axis relative to the housing member.

Abstract: A roll stand for the rolling of rolling stock, especially metal products. The roll stand includes at least two chocks for mounting at least one roll, the roll being rotatably mounted in the chocks by its two cylindrical roll necks. A cylindrical neck bushing is arranged on the roll neck with radial play. A rotationally fixed annual axial bearing is axially offset from the neck bushing. The bearing arrangement for the roll necks in the chocks is formed as a plain bearing, preferably a hydrodynamic oil film bearing. When subjected to a load in a rolling process, the neck bushing moves and deforms not only in the radial direction, but also in the axial direction.

Abstract: A high torque sprocket includes a body formed of a castable polymer material defining an outer periphery and a recessed hub section defining an inner surface for engaging a bushing having a smooth circular outer surface and at least one threaded port for securing with the high torque sprocket. A continuous toothed structure is disposed on the outer periphery of the body, which has a circular pitch. A textile reinforcement may be embedded in the body adjacent the inner surface of the hub section. The hub section inner surface is of a tapered shape and adapted to engage a conventional QD bushing or a taper-lock bushing. The continuous toothed structure may have a plurality of S-shaped grooves for engaging a belt and having a groove width, and the ratio of the groove width to the circular pitch may be 0.65 or less, or even a value selected from the range of 0.50 to 0.65.

Abstract: An arrangement including a bushing having a bushing hub, a bushing flange, a housing containing a uni-directional bearing, an axle extending outward from the uni-directional bearing, and a stationary torque arm attached to the axle of the bushing. The bushing hub is inserted into a recessed hub section of a sprocket, and securely connected to the sprocket. The arrangement may also include a driven device attached to the bushing hub, and an endless drive belt and motor.

Abstract: An apparatus includes a non-metal high torque sprocket and non-metal bushing. The non-metal high torque sprocket includes a body defining an outer periphery and a hub section defining an inner surface for engaging a bushing, a continuous toothed structure disposed on the outer periphery of the body, and a textile reinforcement embedded in the body adjacent the inner surface of the hub section, wherein the body is formed of a castable polymer material. The hub section inner surface is a tapered shape, and is adapted to engage a conventional QD bushing or a taper-lock bushing. The non-metal bushing is engageable by the hub section inner surface of the high torque sprocket. The non-metal bushing may be formed of a castable polymer material, which may optionally include ultra-high molecular weight powder. According to some embodiments, the non-metal bushing is a QD bushing.

Abstract: A high torque sprocket includes a body defining an outer periphery and a hub section defining an inner surface for engaging a bushing. A continuous toothed structure is disposed on the outer periphery of the body, and a textile reinforcement embedded in the body adjacent the inner surface of the hub section. The body is formed of a castable polymer material. In some cases, one or two optional flanges are disposed on side(s) of the body immediately adjacent the continuous toothed structure, in some aspects, a textile reinforcement may be embedded in a surface of the flange(s) immediately adjacent the continuous toothed structure. In some aspects, ultra-high molecular weight polyethylene (UHMWPE) is incorporated into the castable polymer material mixture in an amount suitable to provide increased durability to the sprocket.

Abstract: A press drive device includes a connecting rod with input and output ends. A drive shaft mounts to rotate about a shaft axis and includes a connecting rod bearing in eccentric relation to the shaft axis. The input end mounts on the connecting rod bearing. At least first and second drive housings are provided on axially opposite sides of the connecting rod bearing. The drive shaft projects into both drive housings. A motor mounts in at least one of the drive housings and includes a stator rotationally fixed to a drive housing peripheral wall located coaxially around the shaft axis. A rotor supported by a rotor hub is arranged radially within the stator with mounting space between the shaft axis and the rotor for possibly mounting a braking device.

Abstract: Disclosed is a guide element, for supporting and guiding a pin (P) of a glyph in a slot along a sliding direction. The guide element includes a central body (10) provided with a seat adapted to house a portion of the pin (P) and at least one lateral portion (10, 30) which has a sliding surface (21, 31) adapted to slide in contact with a respective lateral wall of the slot. The central body (10) and the at least one lateral portion (20, 30) are configured to rotate relative to each other about an axis (X) parallel to the sliding direction.

Abstract: A roller bearing comprising an inner ring, an outer ring, and a bearing cage positioned between the inner ring and the outer ring. The bearing cage includes a spine and a plurality of pins disposed one side of the spine that are coplanar or offset with a plurality of pins disposed on an opposite side of the spine. A roller is rotationally coupled to each pin such that each roller is coplanar or offset with another roller on the opposite side of the spine.

Abstract: A spacer device for roller elements of a toroidal roller bearing includes an inner ring with an inner ring raceway and an outer ring with an outer ring raceway. The toroidal roller bearing allows for axial and angular displacement between the inner ring and the outer ring. The spacer device comprises at least one centering element that is arranged to extend in between adjacent roller elements in a longitudinal direction of the roller elements when the spacer device is in use. The at least one centering element is arranged to make contact with at least one of one point or a region of one of the inner ring raceway or the outer ring raceway when the spacer device is in use, whereby the spacer device is centered on the one of the inner ring raceway or the outer ring raceway.

Abstract: An annular guide ring for controlling the position of at least one of rolling elements and a bearing cage in relation to an inner ring of a rolling bearing. The guide ring comprises a base portion, a first side portion extending in a radial direction from a first axial end portion of the base portion, and a second side portion extending in a radial direction from a second axial end portion of the base portion, wherein the first side portion and the second side portion are integrally formed with the base portion of a one-piece sheet material. Also described is a method for manufacturing the guide ring for the rolling bearing.

Abstract: A spacer for a rolling bearing, most notably for use in a wind turbine is provided. The spacer is adapted for a rolling bearing having an inner ring, an outer ring and at least one row of angular contact rollers disposed between raceways provided on the rings. The spacer includes two opposite faces 17, 18 having a concave profile adapted to the rollers, each face comprising at least a contact surface 17a, 18a with the associated roller having the shape of a cylinder segment. The axes of the cylinder segments of the contact surfaces converge.

Abstract: A perforated collapsible spacer controllably takes up space between two bearings on an automotive pinion. The perforated collapsible spacer is formed from a steel sheet having longitudinal edges that are joined together in a form of a tube having longitudinal perforated sections formed in its central portion. As a pinion nut is tightened, an axial clamping force is applied to the collapsible spacer that is located between tail and head bearing cones, where the central portion of the collapsible spacer is caused to buckle, so as to adjust the final space between the bearing cones while a spring force is maintained on the bearings. Yield points of the central portion with the perforated sections that buckle, are controllable depending on the steel sheet material thickness, and the size, shape and quantity of perforations in the steel sheet.

Abstract: A wheel bearing for aircraft, that has a long service life and is reliable. The wheel bearing has a small number of individual parts and components that are simple to handle, to mount or to dismount. The wheel bearing of an aircraft landing gear has a wheel rim that is rotationally mounted about an axis over two roller bearings of a bearing arrangement. The external rings of the roller bearings are received together in a single-piece external ring bearing housing. The wheel rim can be detachably connected to the bearing arrangement in such a manner that it can be mounted or dismounted independently from the bearing arrangement.

Abstract: A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y1-Y1) inclined in relation to the axis of rotation (X-X) by a first angle (?1) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y2-Y2) inclined in relation to the axis of rotation (X-X) by a second angle (?2) of between 0° and 45°.

Abstract: A spherical roller bearing having a flanged disk designed as a hollow body, formed from a straight pipe section that is bent to form a ring having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: The present invention relates to a spacer device for roller elements in a toroidal roller bearing, and a method for manufacturing a toroidal roller bearing comprising a plurality of spacer devices. The toroidal roller bearing allows for axial and angular displacement between an inner and outer bearing ring. The spacer device provides first and second roller-contacting surfaces having a concave shape adapted to conform with respective convex contacting surfaces of the toroidal roller elements, and at least one axial end portion which is elastically deformable.

Abstract: A wheel bearing unit having two mirror-symmetrically arranged tapered roller bearings (02), each having one inner ring (04) and one outer ring (03). The tapered roller bearings are connected via the inner rings. The wheel bearing unit includes an inner intermediate ring (08) and an outer intermediate ring (07), each of which are arranged in the axial direction between the inner rings or between the outer rings of the tapered roller bearing. The wheel bearing unit is connected via a latching connection (16, 17) between the inner rings and the inner intermediate ring.

Abstract: The turning bearing has a separator whose leading and trailing sides are concaved to fit over circular rolling surfaces of the rollers to provide concavities where concaved surfaces lying either in parallel with and in perpendicular to the axis of the roller. The rollers fit in the separator in either of two different directions. The separator can be easier installed into the raceway through a loading hole without the posture of the separator in mind. The separator has a quadrilateral in a transverse cross-section perpendicular to a traveling direction of the separator of which a peripheral surface is in opposition to the outer ring and the inner ring. The separator has a center through-hole. The concaved surfaces in the separator are contoured in arced or curved profiles and bulge gradually closer to a circular edge of the through-hole to form arcing bulges at bottoms of the curved surfaces.

Abstract: Each separator is interposed between two cylindrical rollers next to each other in the circumferential direction of a cylindrical roller bearing. A first concave surface on which the cylindrical roller slides and a first groove are formed in a first end surface that is one end surface of the separator in the circumferential direction. The first groove opens at one end of the separator in the axial direction of the roller bearing, and opens at one end of the separator in the radial direction of the roller bearing. When the separator is fitted to the roller bearing, the first groove opens toward a first rib of the inner ring in the axial direction, and opens toward the outer peripheral cylindrical raceway surface in the radial direction.

Abstract: A method for manufacturing a rolling-element bearing assembly includes providing a first bearing ring, a second bearing ring and rolling-elements, rotating the first bearing ring relative to the second bearing ring and joining the first bearing ring, the second bearing ring and the rolling elements while the first bearing ring is rotating relative to the second bearing ring. The method additionally includes connecting one of the bearing rings to a bearing ring of another rolling-element bearing or to a spacer while the first bearing ring is rotating relative to the second bearing ring.

Abstract: A spherical roller bearing having a flanged disk designed as as hollow body, formed from a straight pipe section that is bent to for a ting having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: A bearing assembly includes a first bearing comprising a first inner ring and a second bearing comprising a second inner ring. A sleeve-shaped spacer is disposed between and axially separates the first and second inner rings. An adhesive connects the spacer to the first and second inner rings.

Abstract: A motion guide device includes a rolling passage formed between two members, a number of cylindrical roller bearing members disposed in the rolling passage and engaged between the members, and a number of spacers disposed in the rolling passage and engaged between the cylindrical roller bearing members, the spacers each include two opposite curved depressions for engaging with the cylindrical outer peripheral surfaces of the cylindrical roller bearing members, and each defined by a planar middle surface, a tilted upper surface and a tilted lower surface inclined relative to the planar middle surface and the vertical axis (Z) of the spacer for selectively engaging with the cylindrical roller bearing members.

Abstract: A spherical roller bearing having a flanged disk designed as a hollow body, formed from a straight pipe section that is bent to form a ting having two ring ends that are joined. The ring is shaped into a flanged disk with a desired axial section geometry in a pressing device with a contour tool in a single pass.

Abstract: The present invention relates to a spacer device for roller elements in a toroidal roller bearing, and a method for manufacturing a toroidal roller bearing comprising a plurality of spacer devices. The toroidal roller bearing allows for axial and angular displacement between an inner and outer bearing ring. The spacer device provides first and second roller-contacting surfaces having a concave shape adapted to conform with respective convex contacting surfaces of the toroidal roller elements, and at least one axial end portion which is elastically deformable.

Abstract: A roller bearing has spacers interposed between its rollers. The roller bearing also has a high permissible rotational speed which is achieved by allowing a lubricant to flow smoothly around rolling surfaces so that the stirring resistance of the lubricant due to the spacers is reduced. The roller bearing includes a plurality of rotatable rollers interposed between an inner ring raceway surface and an outer ring raceway surface and spacers provided between adjacent rollers. Each of the spacers includes extended portions facing roller end faces of the rollers at both axial ends thereof.

Abstract: A retaining element is disposed between two adjacent roller bodies of a roller bearing having an inner ring and an outer ring. The inner ring has an inner ring track with an inner radius and the outer ring has an outer ring track with an outer radius. Center points of the roller bodies are disposed along a pitch circle having a pitch circle radius. The retaining element extends radially inward from the pitch circle over at least 90% of the difference between the pitch circle radius and the inner radius and extends radially outward from the pitch circle over up to 50% of the difference between the outer radius and the pitch circle radius or vice versa.

Abstract: An ultrathin cross-roller bearing composed of outer and inner rings, more than one roller rolling through between the outer and inner rings, and a separator interposed between any two adjoining rollers. With the ultrathin cross-roller bearing constructed as stated earlier, the separator lying between the adjoining rollers is in the form of right cylinder better for keeping constantly the roller in proper posture, getting the bearing itself downsized and lightweight as small as possible, and further making sure of positive lubrication. The outer and inner rings are each made into one-piece construction. The inner ring has an inside diameter in a range of from 20 mm to 50 mm. The roller used in the ultrathin cross-roller bearing has a diameter of 2 mm to render a transverse section given by a product of a radial height and a bearing width in transverse section small or ultrathin in thickness.

Abstract: A retainer of a crossed roller bearing has a retainer body plate of rectangular profile corresponding to a rectangular cross-section of a race. Rectangular side surfaces on either side of the retainer body plate are inclined planes that slant in a direction of approaching one another from one corner to another corner along a diagonal line of the surfaces, and extend towards a bearing center in a state of having been installed in the race. Recesses for accumulating grease are formed in center portions of the rectangular side surfaces, the recesses communicating via a through-hole. The rectangular side surfaces are in linear contact with the circular external circumferential surfaces of adjacent rollers and hold the rollers at a fixed spacing. There is obtained a retainer for an uncomplicatedly configured crossed roller bearing that allows adjacent rollers to be held at a fixed spacing and is provided with a grease accumulator.

Abstract: The seat adjustment mechanism has a housing with an outer ring and an inner ring. The rings are arranged concentrically. Clamping bodies interact with double clamping ramps on the rings and are arranged in an annular space between the rings. Spring supports pivot in relation to each other, interact with a stop on the housing, are arranged concentrically with the rings, and engage in each case both in the annular space and in an inner space arranged radially within the inner ring. The spring supports are braced in relation to each other by a spring, which is arranged in the inner space to secure the clamping bodies in the center of the double clamping ramps. Stop surfaces of the spring supports are acted upon by a force in the direction in which they are minimally spaced apart.

Abstract: A driveline assembly may include a driveline component housing, a pinion shaft located within the housing, a first bearing assembly, a second bearing assembly, a spacer assembly, and a load adjustment member. The spacer assembly may be located axially between the first and second bearing assemblies and may include first and second members. The first member may be axially fixed on the pinion shaft and may include an axial end defining a first generally conical surface. The second member may include a first axial end engaged with the second bearing assembly and a second axial end defining a second generally conical surface abutting the first generally conical surface. The load adjustment member may be axially displaceable relative to the pinion shaft to advance the second member axially along the first generally conical surface of the first member and adjust a preload on the second bearing assembly.

Abstract: In a rotary wing aircraft tail rotor head assembly having a ball bearing on a spindle at the head of a rotor wing, the ball bearing contains slug ball separators between the balls in the bearing. The separator may be made from PEEK, PTFE, or polyimide. The ball-to-ball separation between two balls of like diameter provided by the separator may about 3.2 to about 64% of the diameter of one of the balls. A separator may have an annular configuration that defines a passage therethrough, the passage having two ends and the interior of the separator being tapered to define a maximum diameter at each end and a minimum diameter therebetween. The taper of the chamfered surface of the slug ball separator may define a conical angle of about 75° to about 120°. A ball bearing as described herein may also be used in a rotary wing aircraft swashplate having a stationary plate, a rotating plate; and a thrust bearing between the stationary plate and the rotating plate.

Abstract: The invention relates to a double-row angular contact anti-friction bearing having a split outer bearing ring, a one-piece inner bearing ring, and anti-friction bodies located in two rows between the two rings. The outer bearing ring is split axially into two individual rings. To permit simple, reliable and secure transport of the bearing, the individual outer bearing rings are interconnected by a connecting element in a positive fit that allows play and the outer surfaces of the individual rings have at least one recess, which is spanned by the connecting element. At least the recess of an individual ring has a groove, in which a hook element on the connecting element engages in a positive fit and the individual rings can be twisted in relation to one another.

Abstract: A roller bearing having spacers interposed between rollers is provided. During operation of the bearing, the spacers are prevented from being pressed by adjacent rollers against an inner ring or inner ring, so that heat generation and wear of the spacers at a guiding surface are reduced. The roller bearing includes an outer ring, an inner ring, a plurality of rollers, and a plurality of spacers interposed between adjacent rollers. Surfaces of each spacer that face respective rolling contact surfaces of the rollers each have a concave shape that extends across a pitch circle of the rollers, and the spacers are guided by one of the outer and inner rings. When each of the spacers is held between the adjacent rollers, a clearance is formed between the one of the outer and inner rings and the spacer.

Abstract: A bearing assembly includes a first bearing comprising a first inner ring and a second bearing comprising a second inner ring. A sleeve-shaped spacer is disposed between and axially separates the first and second inner rings. An adhesive connects the spacer to the first and second inner rings.

Abstract: The invention relates to a rolling bearing (1) comprising at least a first ring with an undulating rolling surface (21) and a second ring (2, 4), the rings being coaxial and given a relative rotational and reciprocating axial movement, and at least one row of rolling bodies (7) mounted in rolling contact between the respective rolling surfaces provided on the said rings.

Abstract: A wheel bearing arrangement has a spindle having inboard and outboard portions, where the outboard portion cooperates with a fluid driven motor and a land connects the outboard portion and the inboard portion. The wheel bearing arrangement further has inboard and outboard bearing systems located radially outb from the land. Each bearing system has a bearing located between inner and outer races, where the inner race contacts the spindle land and the outer race contacts a wheel hub. In addition, a spacer is located between the two bearing systems, where the spacer extends from the land to a radially inwardly extending hub portion and where the spacer sets the preload on both bearing systems and diffuses inboard traveling fluid pressure spikes. A spindle nut is located outboard from the outboard bearing system to secure the bearing systems on the spindle.

Abstract: A roller bearing having spacers interposed between its rollers is provided, which has a high permissible rotational speed which is achieved by allowing a lubricant to flow smoothly around rolling surfaces so that the stirring resistance of the lubricant due to the spacers is reduced. The roller bearing includes: a plurality of rotatable rollers (16) interposed between an inner ring raceway surface and an outer ring raceway surface; and spacers (18) provided between adjacent rollers (16). Each of the spacers (18) includes extended portions (18a) facing roller end faces (16b) at both axial ends thereof.

Abstract: A bearing assembly is provided having a roller bearing with an inner case fitted around the journal portion of an axle. An outer raceway combines with the inner raceway to receive roller elements. A backing ring is centered to the shaft fillet. An annular wear ring is positioned between the inner case and the backing ring. An annular sealant bead or a sealant ring form a seal between the shaft shoulder and the backing ring.

Abstract: A spacer structure for cross rollers comprises a frame and four protruding wings, the protruding wings are arranged in pairs on opposing sides of the frame and outwardly extend therefrom. The two inactive end surfaces of the roller are confined between the paired protruding wings of the spacer. The slenderness ratio of the roller is designed to be 0.7-0.98 for facilitating installation of the roller between the paired protruding wings of the spacer, and such arrangement can effectively reduce the contact area between the spacer and the roller. The paired opposite protruding wings can provide a stable positioning effect to the end surfaces of the roller.

Abstract: The clearance between the outer peripheral surface of an annular portion of a cage and the inner peripheral surface of each of rib portions of outer-ring split pieces is set to be smaller than the clearance between the radial end surface of a projection portion of the cage and the inner peripheral surface of each of body portions of the outer-ring split pieces. When a centrifugal force due to engine rotation acts upon the cage, the inner peripheral surface of each of the rib portions of the outer-ring split pieces touches the outer peripheral surface of the annular portion of the cage before the inner peripheral surface of each of the body portions of the outer-ring split pieces touches the radial end surface of the projection portion of the cage. Thus, the radial displacement of the cage can be prevented in good time.

Abstract: Emergence of fretting worn powder is to be suppressed, and intrusion of the worn powder that has emerged into an internal area of the bearing. A ring spacer is interposed between an end face of an inner ring of the bearing to be mounted on a wheel axle, and an end face of a rear cover (ring member) to be mounted on the wheel axle for axial positioning of the inner race with respect to the wheel axle. An elastic seal ring is integrally fixed to an outer periphery of the ring spacer. The elastic seal ring is elastically fitted to an outer circumference of a recessed stepped portion formed on the end face of the rear cover. The elastic seal ring is thus pressed against the opposing end faces of the inner race and the rear cover. Inside the elastic seal ring, a storage space for the worn powder is provided.

Abstract: A spacer for roller bodies, which are guided in a roller bearing and which have an axis of symmetry and have an axis of symmetry, defining a rolling axis, about which they roll in a revolution path of the roller bearing, includes two diametrically opposed, spaced-apart end parts, which are each located transversely to the direction of motion of the roller bodies and have contact faces for rolling faces of the roller bodies; two diametrically opposed, spaced-apart lateral parts, and each of the lateral parts connects the two end parts, has a platelike shape, with a flat side, extending transversely to the rolling axis of the roller bodies, for contact with the roller bodies, and short sides extending substantially in the direction of the rolling axis of the roller bodies, and is stiffened with regard to bending essentially orthogonally to the rolling axis of the roller bodies in such a way that in its motion along the revolution path, it essentially maintains its shape; and at least one rib, connecting the two

Abstract: An isolating connector between a first work piece and a second work piece each defining a hole therein includes first and second spring members that capture the first work piece between flanges of the spring members and establish a column between the second work piece and a head of a bolt extending through the first and second spring members and anchored in the second work piece.

Abstract: A preload system for bearings in a waterjet propulsion apparatus, the apparatus including a water intake section and a pumping unit including a bearing cartridge. The bearing cartridge is designed such that during operation a preload system provides tailoring between radial and axial thermal growths of a plurality of bearing components that comprise the bearing cartridge and such that an initial ambient temperature preload condition can be maintained or reduced during normal water mode operation conditions. The preload system includes a plurality of spacers that when positioned relative to the bearing components of the bearing cartridge prevent relative motion between the bearing components during land mode operation and maintain or reduce the initial ambient room temperature preload condition during normal water mode operation.

Abstract: A thrust roller bearing system comprising an inner rotating member, an outer rotating member and multiple rollers coupling the inner rotating member with outer rotating member. The inner and outer rotating members include thrust lips to enable the rollers to act as thrust rollers. The rollers contact inner and outer rotating members at bearing contact points along a contact line. Consequently, the radial/tilt and thrust forces move synchronously and simultaneously to create a bearing action with no slipping.

Abstract: A double-row angular-contact antifriction bearing including an outer bearing ring, and an inner bearing ring and rolling elements between the bearing rings in two rows next to one another on raceways of the bearing rings. A bearing cage for the rolling elements. The inner bearing ring is axially split and is of two individual rings which are connected and between which a distance ring defines axial prestress between the rolling elements of the both rows. The distance ring between the individual rings of the axially split inner ring is a connecting element of the individual rings.

Abstract: A thermally compensated differential comprises a housing, a pinion gear mounted into the housing, a differential case carrying a ring gear with the case being supported by a first roller bearing and a second roller bearing with the bearings being mounted indirectly, and the first and second roller bearings being contacted by adjustable spacers.

Abstract: A mounting for the road wheel of an automotive vehicle includes a spindle, a hub located around the spindle and inboard and outboard tapered roller bearings located between the hub and spindle where they are mounted in opposition. The cones (inner races) of the two bearings are separated by a spacer which at its ends is attached to the cones. The spacer holds the cones together within the hub so that the bearings and hub can be installed on and removed from the spindle as a unit. The spacer also establishes the setting for the bearings. In addition, the mounting has a seal located in the inboard end of the hub. The seal has lips which establish dynamic fluid barriers along the cone of the inboard bearing and along an adjacent sealing surface on the spindle without contacting the cone or spindle. The raceways and rollers for the two bearings have highly crowned profiles and the hub and the seal within contain an optimum amount of grease for lubricating the bearings.