Abstract: A pivot bearing arrangement for a steering column of a motor vehicle, having a steering shaft which is rotatably mounted in a casing unit in the direction of its axis of rotation but rigidly mounted in the radial direction, is improved in terms of a simple and cost-effective construction in that the casing unit is provided with at least one first sliding bearing shell, which comprises a first circumferential radial projection, which engages in a first circumferential groove.

Abstract: The present disclosure relates to optical systems and related devices, specifically those related to light detection and ranging (LIDAR) systems. An example optical system includes a housing, a shaft defining a rotational axis, and a rotatable optical component coupled to the shaft. The optical system also includes a first rotary bearing having an inner race, an outer race, and a plurality of rolling elements configured to roll between the inner race and the outer race. The inner race is coupled to the shaft and the outer race is coupled to the housing. The optical system also includes a preload mechanism having a spring coupled to the housing and a preload distributor coupled to the spring and the outer race. The spring is configured to apply an axial preload force to the outer race through the preload distributor.

Abstract: The present invention relates to a bearing structure with a close fit, which comprises a fan frame having a base and a shaft sleeve disposed vertically. The shaft sleeve has a receiving space in which a bearing set is disposed. At least one external ring is sleeved around the outer perimeter of the shaft sleeve and is disposed corresponding to the bearing set. Therefore, by means of the external ring, the close fit between the shaft sleeve and the bearing set is improved, which increases the assembly precision.

Abstract: A bearing assembly is disclosed for an exhaust gas turbocharger for rotatably supporting a rotor shaft on a bearing housing, having at least one bearing outer ring of a radial bearing, which at least one bearing outer ring is placed in a bearing bore of the bearing housing and consists of at least one part, and at least one securing element, which consists of at least one part and by which the bearing outer ring is axially fastened in relation to the bearing housing. In order to simplify the assembly of a corresponding bearing assembly and to reduce the production costs thereof, at least one circumferential groove, according to the invention, is arranged on an outer lateral surface of a compressor-side end section of the bearing outer ring, in which at least one groove the securing element engages, and the securing element is arranged outside of the bearing bore on the compressor side and is supported at least indirectly on a compressor-side end of the bearing housing.

Abstract: A bearing assembly (100) for supporting a steering shaft within a steering column tube including an outer bearing ring (120) defining an outer raceway (122), an inner bearing ring (130) defining an inner raceway (132), a plurality of roller elements (154) disposed between the inner raceway and the outer raceway, a support cone (160) defining an inner face and an outer surface, the support cone being disposed radially inwardly of, and in contact with, the inner bearing ring, and a biasing element (180) disposed adjacent the inner surface of the support cone. The biasing element exerts force radially-outwardly against the inner surface of the support cone.

Abstract: An assembly for a turbocharger can include a pinched nozzle cartridge that includes a base component, an insert component and vanes disposed at least in part between the base component and the insert component, where the insert component includes a shroud surface and an upper pinch profile, where the base component includes an annular surface that defines a turbine wheel opening and a lower profile and where the upper pinch profile and the lower profile form a pinched nozzle. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A drive shaft system (100) comprising a shaft (80) connected to a motor via a coupling (50) and arranged to transmit a rotary movement from the motor to the rotor, at least two supports (65,75) arranged to position the shaft within a shaft housing (90), each support comprising at least one bearing (95,98), and at least one forcing element (135,145) arranged to force at least one of the supports against either an inner side of the shaft housing or an outer side of the shaft (80); such as to prevent turning and radial movements of the supports within the shaft housing while enabling axial movement of the shaft within the shaft housing. The bearings may be forced at either their inner or outer rings, and may be enclosed in a bearing housing (120) for protection and stiffness.

Abstract: A bearing with a supporting element, wherein the bearing is suitable for connecting a rotor blade of a wind turbine with a hub of the wind turbine is provided. The bearing comprises a first ring, which is arranged and prepared to be connected with the hub, and a second ring, which is arranged and prepared to be connected with the rotor blade. The rotor blade is rotatable with regard to the hub around a rotor blade axis of rotation. Furthermore, the bearing comprises a supporting element for supporting the first ring, in particular against deformation. The supporting element is arranged and prepared to be attached to the first ring with a first fixing element and to the hub with a second fixing element. A method of supporting a first ring of a bearing is also provided.

Abstract: A rolling bearing device for a steering column includes an outer ring, an inner ring, at least one row of rolling elements arranged between the rings, and a sleeve mounted in the bore of the inner ring and coming to bear axially against the ring. The sleeve provides a bore designed to come into radial contact with a shaft, and a member for the axial retention of the sleeve that is designed to engage with the shaft. The sleeve has at least one elastic body at least partially delimiting the bore. The axial retention member is mounted to bear axially directly against the sleeve on the opposite side from the inner ring.

Abstract: A constant preload device of a ball bearing is provided. The preload device includes an elastic member having a hollow shape with openings at both sides in an elastic direction, and two holders inserted into the openings at the both sides of the elastic member, respectively. Each holder includes a flange part configured to contact an end portion of the opening, into which the holder is inserted, to regulate an extension of the elastic member in the elastic direction, and a claw part configured to engage with the other holder to regulate separation from the other holder. The holders are engaged to each other by the claw parts such that the elastic member is exposed from the holders. When the preload device applies preload to the ball bearing, the ball bearing contacts the preload device only at an outer ring of the ball bearing.

Abstract: Disclosed is a bearing system for a worm engaging with a worm wheel as part of a steering gear, wherein the bearing system comprises at least one bearing with an outer ring, an inner ring, and rolling bodies that are movably accommodated between the outer an inner rings, the bearing being pivotally arranged in a bearing seat for accommodating the outer ring of the bearing, and wherein the inner ring accommodates one of the two shaft ends of the worm in order to seat said shaft end of the worm radially in the housing of the steering gear. For an improved dampening of the worm at least one spring element, which exerts a spring force on a region of the outer ring of the bearing, is provided at the bearing, said spring force supporting a pivotal motion of the worm toward the worm wheel.

Abstract: An X-ray tube bearing includes an outer housing having an axial bore, a shaft at least partially received within the axial bore, a first outer ring positioned within the axial bore and surrounding a first portion of the shaft, and a second outer ring at least partially received within the axial bore and surrounding a second portion of the shaft. The second outer ring includes a radially outwardly extending flange engaged with the outer housing to limit the extent to which the second outer ring is received within the axial bore. The X-ray tube bearing also includes a first biasing member biasing the flange into engagement with the outer housing, and a second biasing member positioned within the axial bore for exerting an axial preload force between the first and second outer rings.

Abstract: A bearing assembly that includes a first bearing, a second bearing, a spring and a sleeve. The spring applies a preload to each of the bearings, and the sleeve surrounds the spring and the bearings. The sleeve includes an end portion that extends axially beyond the first bearing. The end portion includes a step down in the outer diameter that defines a seat for an o-ring.

Abstract: A bearing preload adjuster assembly can include a first annular member defining a first outer wall having a threaded region and a first inner wall having a plurality of first ramped surfaces formed thereon. The first outer wall can threadably engage a corresponding threaded region of an axle assembly. A second annular member can define a second outer wall having a plurality of second ramped surfaces formed thereon and can be received in the first annular member such that the second outer wall faces the first inner wall. A biasing member can bias the second annular member in a first axial direction such that the plurality of second ramped surfaces are in selective meshed engagement with the plurality of first ramped surfaces. A retaining member can be coupled to the first inner wall and can retain the biasing member and second annular member within the first annular member.

Abstract: An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.

Abstract: A spring washer is disclosed for axially preloading anti-friction bearings. The spring washer can include an outer ring and an inner ring that is coaxially arranged with respect to the outer ring. An axis is defined by the two rings. Outer and inner rings are connected through several resilient connection rods. Resilient cantilevered rods can be provided which extend from one of the rings in between the connection rods and which have a free end at the opposite positioned ring. Thereby, the cantilevered rods can be axially bent up such that the free end has an axial offset.

Abstract: A constant preload device of a ball bearing is provided. The preload device includes an elastic member having a hollow shape with openings at both sides in an elastic direction, and two holders inserted into the openings at the both sides of the elastic member, respectively. Each holder includes a flange part configured to contact an end portion of the opening, into which the holder is inserted, to regulate an extension of the elastic member in the elastic direction, and a claw part configured to engage with the other holder to regulate separation from the other holder. The holders are engaged to each other by the claw parts such that the elastic member is exposed from the holders. When the preload device applies preload to the ball bearing, the roll ball bearing contacts the preload device only at an outer ring of the ball bearing.

Abstract: An exemplary method for limiting movement of an outer race of a bearing cartridge includes positioning the bearing cartridge in a substantially cylindrical bore having a longitudinal axis, an inner diameter exceeding an outer diameter of the outer race, a proximate end and a distal end; limiting axial movement of the outer race at the distal end of the cylindrical bore with a counterbore substantially coaxial to the cylindrical bore and having an inner diameter less than the outer diameter of the outer race; limiting axial movement of the outer race at the proximate end of the cylindrical bore with a plate positioned substantially orthogonal to the longitudinal axis; and limiting rotation of the outer race with a pin positioned in a pin opening accessible via a lubricant drain. Various exemplary bearing cartridges, housings, assemblies, etc., are also disclosed.

Abstract: Low-pressure screw compressor provided with a rotor housing (2) with an inlet side and an outlet side, and enclosing two rotor bodies (3 and 4) including shafts (5, 7 respectively) and screws (6, 8 respectively) mounted on the shafts. The rotor shafts (5 or 7) are bearing-mounted in the rotor housing (2), with the bearing mountings on the inlet side of the rotor housing each using a single loose bearing and the bearing mountings on the outlet side of the rotor housing each using a single fixed cylindrical roller bearing. Spring devices acting on the bearing mountings at the inlet side urge the shafts and rotors toward the outlet side to maintain minimum clearance between the rotors and the housing at the outlet side of the rotors.

Abstract: This disclosure relates to transient energy systems for supplying power to a load substantially instantaneously on demand. Transient energy systems may include a flywheel coupled the rotor of an induction motor generator. One embodiment of the disclosure refers to systems and methods for reducing loads on a bearing in a transient energy system. In another embodiment, the disclosure refers to an induction motor generator that is optimized for high power transient power generation, yet low power motor operation. Yet another embodiment of the disclosure refers to using a flywheel as a drag pump to cool components of a transient energy system. In yet another embodiment, a slip control scheme is discussed for regulating a DC bus. In yet a further embodiment of the disclosure a method is provided for reducing unnecessary turbine starts by making turbine start a function of the rotational velocity of a flywheel.

Abstract: The rotatable joinder of two sheets is provided by a two-piece interfitting bearing assembly with each element separately attached to one of the sheets so that the sheets are joined but rotation is controlled by the interfitting bearing surfaces. The interfitting parts comprise an inner and outer race which are placed together in superposition with aligned apertures in the sheets. The rotatable attachment of the sheets is accomplished in a single pressing operation in which each race is simultaneously pressed into one of the sheets with a gap remaining between them.

Abstract: The present invention relates to an axial spring element, and an electric machine (10), in particular for driving functional elements in a motor vehicle, with a rotor shaft (12), which is rotatably supported in a housing part (16) of a housing via a roller bearing (22, 20) An axial spring element (32) is located between the roller bearing (22, 20) and a rotor component (34) installed non-rotatably on the rotor shaft (12). The axial spring element (32) includes an inner ring (40) and an outer ring (42), which are interconnected in an axially resilient manner, and the outer ring (42) is axially connected to the rotor component (34).

Abstract: An electric motor (1) having a mount system (2) is used in particular as a motor for power-assisted steering. The mount system (2) has a roller bearing (8) in the form of a movable bearing, wherein a rolling-surface body (25; 26) of the roller bearing (8) has a groove in which a spring element (18) is arranged. When the electric motor (1) is mounted, the spring element (18) is prestressed in a radial direction (20), with the result that play-free mounting of a shaft (5) of the electric motor (1) is ensured in the radial direction (20) by means of the roller bearing (8).

Abstract: An improved roller assembly for use in machinery such as round balers is disclosed. The roller assembly of the present invention reduces sensitivity to varying dimensional tolerances on the roller assembly and the structure to which the roller assembly is mounted. At least one elastic member is used to permit the axial position of at least one of the bearings on the roller assembly shaft to vary. Spring washers provide a predetermined, axial force to at least one of the bearings.

Abstract: The present invention relates to an electrical machine 1, in particular an electric motor, with a housing 2 and covers 3, 4 that close the housing 2 and contain bearings 7, 8 that rotatably support a rotor 5. According to the present invention, spring elements 7.3, 8.3 are provided that act upon at least one bearing shell 7.1, 7.2, 8.1, 8.2 each of bearings 7, 8 with a compression force acting in the axial direction, whereby the mounting of the bearing shell 7.1, 7.2, 8.1, 8.2 that is acted upon by one of the spring elements 7.3, 8.3 is configured as a sliding fit.

Abstract: A locking ring assembly retains a bearing to a shaft rotatably supported on a first axis of rotation. Guide pins or rods extend axially from an annularly shaped bearing retainer slideably disposed on the shaft towards the pressure ring, also slideably disposed on the shaft. The heads of the guide pins are slideably disposed and captured in adjusting apertures of the pressure ring. A multi part pressure screw assembly are provided in the adjusting apertures of the pressure ring. Such pressure screws translate axially in the apertures of the pressure ring when rotated, with the thrust pads engaging the heads of the guide pins to displace the pressure ring from the bearing retainer. The pressure ring reacts against a reactive element or ring disposed on the shaft opposite the bearing retainer to develop an axial pressure load against the bearing.

Abstract: A centrifugal supercharger is provided. One embodiment of the supercharger comprises a two-piece housing wherein a parting area is substantially aligned with a rotational axis of a drive- or impeller shaft. Another embodiment comprises a sleeve, or intermediate member disposed substantially between the housing and a bearing assembly(s) located within the supercharger housing. Another embodiment comprises a disengagement device located between the supercharger impeller and the engine. The disengagement device allows selective disengagement of the impeller from the engine. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

Abstract: A spindle unit includes an elongated shaft, a tubular housing surrounding the shaft, a locating rolling bearing in the interior of the housing that is mounted on the shaft, and a non-locating rolling bearing provided in the interior of the housing and mounted on the shaft, wherein the two bearings are spaced apart along the shaft. The bearing housing is made as two identical halves, each of which is formed as a generally semi-tubular shell-formed member, having radii of varying size in the longitudinal direction thereof, with end portions closely adjoining to the shaft. Each bearing housing half is provided with an arrangement adapted to interconnect the two bearing housing halves in a weatherproof manner. The spindle unit can be incorporated into a fishing reel and a wind gauge.

Abstract: A rotor shaft is supported in a housing of a rotor assembly for a laser level. Bearings support the rotor shaft for rotation relative to the housing. An adhesive fixes an outer race of at least one of the bearings in position between the rotor shaft and the housing. The adhesive is a low viscosity, quick setting anaerobic adhesive, which when cured prevents angular drift of the shaft relative to the housing by eliminating the clearance that would have existed between the outer race and the housing.

Abstract: A bearing unit includes: a housing; a shaft passing through the housing and rotatably supported on the housing; and a pair of rolling bearings disposed between the housing and the shaft and fitted to two positions on the shaft, which are axially spaced apart from each other. At least one rolling bearing has an inner ring press-fitted to the shaft. The inner ring defines an intermediate portion including an inner raceway surface. A reduced diameter part having an outer diameter smaller than the inner diameter of the inner ring and a predetermined width in the axial direction is formed on the shaft at a position corresponding to the intermediate portion so that inner circumferential surfaces located at both ends of the inner ring in the axial direction are interference fitted to the shaft and the inner circumferential surface at the intermediate portion thereof is clearance fitted to the shaft.

Abstract: A conic bearing positioning member for a spindle motor includes a small diameter portion abutting against an inner race of a ball bearing of the spindle motor, a large diameter portion abutting against a rotor of the spindle motor, and at least one resilient connecting portion extending between the small diameter portion and the large diameter portion for biasing the ball bearing and the rotor away from each other, assuring a gap between the ball bearing and the rotor. The conic bearing positioning member may be a helical spring.

Abstract: A reel mower includes a bearing system having a spring that biases a plurality of ball bearings toward a cone. The cone is fixedly mounted on the reel shaft. The cone can be conically constructed, and used in combination with a washer that is fixedly attached to the reel shaft.

Abstract: In the blower 1 which fixes the impeller 17 on one end of the shaft 11, as bearing to support the shaft 11, in the resin-made bearing box 7b, two ball bearings 8, 9 the width of the inner races of which is smaller than the width of the outer races are inserted from one side of the box, and one inner race of the two ball bearings 8, 9 is pressurized toward the other ball bearing 9 with a spring 14. Two ball bearings 8, 9 are fixed at the position where the coaxiality becomes minimum. In addition, since the inner race is given with a pressurization by pushing of the spring 14, the position where the coaxiality becomes minimum can be kept.

Abstract: A bearing unit includes: a housing; a shaft passing through the housing and rotatably supported on the housing; and a pair of rolling bearings disposed between the housing and the shaft and fitted to two positions on the shaft, which are axially spaced apart from each other. At least one rolling bearing has an inner ring press-fitted to the shaft. The inner ring defines an intermediate portion including an inner raceway surface. A reduced diameter part having an outer diameter smaller than the inner diameter of the inner ring and a predetermined width in the axial direction is formed on the shaft at a position corresponding to the intermediate portion so that inner circumferential surfaces located at both ends of the inner ring in the axial direction are interference fitted to the shaft and the inner circumferential surface at the intermediate portion thereof is clearance fitted to the shaft.

Abstract: A bearing assembly includes a rolling bearing, having an inner ring, an outer ring, rolling bodies arranged between the inner ring and the outer ring, and a clamping ring, for supporting a steering shaft and a further bearing, for supporting a steering shaft. The rolling bearing is further provided with a pre-tensioning element for axially loading the rolling bearing and the further bearing relative to one another, and a support element for axially supporting the steering shaft are further provided, with the outer ring circumscribing at least one of the pre-tensioning element and the support element at radial and axial distances to an inner surface area of the outer ring. A retention member holds the at least one of the pre-tensioning element and the support element in axial direction, to form an assembly unit, with the pre-tensioning element and the support element being integrated in the outer ring.

Abstract: A small cored motor has a ball bearing which is a relatively long life, the overall thin dimension, a low manufacturing cost, low-friction as well as substantially vibration-free rotation. The ball bearing includes a biased and movable portion for promoting low-friction and substantially vibration-free rotation as well as a ball retainer for separating balls apart at a predetermined distance.

Abstract: A gear including a frame, a first shaft, a first gearwheel arranged on the first shaft and in engagement with a second gearwheel mounted on a second shaft, the second shaft including bearings at both sides of the second gearwheel between the frame and the second shaft. The second shaft revolves about the bearings placed on each side of the second gearwheel. At least one spring is fitted to act with a force upon an outer race of rolling members of one of the bearings. A glide fitting is provided between a circumferential face of the outer race and the gear frame or a connected part. The force effect applied by the spring(s) is transferred through the rolling members of the bearing to the inner race of the bearing and further to the other bearing placed at the opposite side of the gearwheel whereby the play in both bearings between the rolling members and the bearing races is eliminated.

Abstract: A preloading regulating mechanism for rolling bearings which is adapted to be used to adjust an axial force on the rolling bearings is disclosed. The preloading regulating mechanism includes a first fixing member, a regulator disposed in the first fixing member for allowing a user to apply a torque thereon, an annular plate having a first face connected to the regulator for being moved in response to the torque exerted from the regulator, a resilient member having a first end connected to a second face of the annular plate for urging against the annular plate to form an elastic force, and a movable annular element connected to a second end of the resilient member for transmitting the elastic force to form the axial force on the rolling bearing in response to the motion of the annular plate.

Abstract: A machine tool spindle is associated with an adjustable preload mechanism for varying the preload on a bearing set for the spindle the mechanism comprising an annular piston that is selectively pressurized for loading spring(s) carried by a spring retainer that is engageable with the bearing set; and wherein the annular piston is held in an adjusted position by a position locating device including an adjustment member removably supported within a housing for the bearings and selectively engageable with the annular piston; the position locating device having a plurality of adjusted positions selectively engageable with the annular piston for fixing it in one of a plurality of positions for varying the compression of the spring(s) so as to maintain one of a plurality of preloads on the bearing set.

Abstract: When a roller cylinder of a top roller is installed, it may collide against an outer bearing and damage it. Since the roller cylinder is loosened, when drafting is executed at a high speed, the roller cylinder may vibrate, causing non-uniform drafting. A pre-loading spring 30 is installed between an inner bearing 20 and an outer bearing 21 and on the inner circumferential side. Due to the elastic force of the pressurizing spring 30, inner rings 20b and 21b of the bearings rotate integrally with a shaft 10. When the roller cylinder 12 is installed, if it collides against the outer bearing 21, the pre-loading spring 30 acts as a buffer to prevent damage to the bearings. O-rings 31 and 32 installed between outer rings 20a and 21a of the bearings 20 and 21 fill the gap to prevent the roller cylinder 12 from loosening. As a result, uniform drafting can be executed at a high speed.

Abstract: A shaft (12) rotatively mounted in a support (14) by rolling elements comprising at least one first rolling bearing (18) providing an oblique contact surface axially biased in one direction by an elastic return force and in a direction opposed to the preceding direction by a thrust block (28) carried by the shaft (12). The block (28) is axially movable between a first position and a second position of application of a force opposed to the return force. The magnitude of the opposing force is greater in the second position of the block (28) than in the first position of this block (28). The block (28) is connected to the shaft by a connection (32) which is cooperative by the effect of friction with the shaft (12).

Abstract: A supporting structure of bearings incorporates a housing, a shaft on which a rotor is fixed, a first ball bearing supported on the housing supporting one side of the shaft and having an outer and inner race, a second ball bearing supported on the housing supporting the other side of the shaft and having an outer and an inner race, an elastic member for urging the outer race of the second ball bearing in the axial direction, and a ring spacer having at least one radial projecting portion disposed between the elastic member and the outer race of the second ball bearing. The outer race and the inner race of the first ball bearing are fixed to the housing and the shaft. The outer race of the second ball bearing is slidably mounted to the housing, while the inner race of the second ball bearing is fixed to the shaft. The ring spacer also includes an axial groove formed on the housing for receiving the radial projecting portion whereby the radial projecting portion slides along the axial groove.

Abstract: A large chamfer on the outer race mates with a matching angled step in the housing bore and eliminates the need for the press fit while still meeting the application requirements. Alternative designs reduce the rotational effort and torque variation of the system and facilitate assembly. The mating tapers give the bearings freedom to self-align and thereby avoid common "clicking" noise.

Abstract: A piston is displaced in a cylinder to pre-load an antifriction bearing. This displacement of the piston is effected according to the amount of working oil confined in a working oil chamber. This oil pressure generating device is equipped with a working oil reservoir to pressurize the working oil in the reservoir for reserving the working oil to be fed to the chamber. An orifice is disposed in a working oil passage for providing the communication between the reservoir and the chamber. The clearance, which is established in the portion of antifriction bearing by the extension or contraction of a shaft due to a temperature change, is absorbed by such displacement of the piston, as is effected by the flow of the working oil between the reservoir and the chamber via the orifice. This orifice acts as a high resistance to and a high rigidity against the abrupt fluctuation in the direction opposite to the pre-loading direction.

Abstract: A system for preloading the bearing of a cooling water pump for motor vehicles. The pump comprises a shaft and an impeller mounted on one end of the shaft and, an outer bearing ring surrounding the shaft. An axial face seal is mounted on one projecting end of the shaft operable bearing ring and to tension spring-loaded sliding rings with a predetermined contact pressure against each other. The outer axial end face of the axial face seal is aligned with the axial end face of the shaft to simplify and insert the same preloading of the bearing for assemblies put together by mass production techniques.

Abstract: A bearing structure used in a pivot bearing for freely supporting the rotation of a head arm of a hard disk drive (HDD). The bearing structure includes an inner shaft, an outer sleeve, a pair of roller bearings axially spaced and interposed between the inner shaft and the outer sleeve, and a preload spring for exerting a preload on the roller bearings. The roller bearings may be provided with an outer race that is attached to the outer sleeve. Nevertheless, the coefficients of linear expansion of the inner shaft and the outer sleeve are chosen so that they are different in an axial direction. Accordingly, the coefficients of linear expansion of the inner shaft and the outer sleeve are chosen so that the rotation torque derived from the preload becomes higher as the temperature rises and lower as the temperature falls. However, the rotational torque becomes lower as the temperature of a lubricant rises and higher as the lubricant temperature falls.

Abstract: A lower bearing assembly for supporting a steering shaft within a tubular jacket of an automotive steering column. The steering shaft is of double-D configuration having two diametrically opposite, arcuate side walls and two diametrically opposite parallel flats. A cup is fitted within the jacket having a hole in the bottom wall through which the steering shaft extends. A bearing within the cup supports the steering shaft for rotation. A wedge is sleeved on the steering shaft and has a tapered nose wedged between the bearing and the steering shaft. The wedge has an inner double-D configuration matching that of the steering shaft. A compression coil spring encircles the wedge and bears on a flange on the wedge to hold the nose of the wedge wedged tightly between the bearing and the steering shaft. A retaining ring is sleeved on the steering shaft and holds the spring under compression. The inner edge of the retaining ring has the same double-D configuration as the steering shaft.

Abstract: The cartridge includes a case with two sections and a connection portion interconnecting the sections and capable of containing in a chamber a rolling bearing including an outer ring which has a bearing surface and a raceway, an inner ring which has a bearing surface and a raceway and rolling members. The case has a support region which is located on the connection portion and is adapted to receive the outer bearing surface. A collar is placed in the chamber and has an end portion coming into contact with the inner bearing surface of the inner ring.

Abstract: A bearing system is provide to couple a tool shaft to a power driven surgical instrument that has a support tube with a longitudinally extending aperture for rotation of the tool shaft about an axis. A pair of bearing assemblies are spaced apart within the aperture by a sleeve and a helical spring that axially biases the bearing assemblies within the aperture. Each bearing assembly includes first and second bearings and an interface cartridge. The first bearing has an outer race abutting a flange element in the aperture, and has an inner race. The tubular interface cartridge engages the inner race and has spring elements extending radially into a passage through the interface cartridge to engage the shaft. A second bearing has an inner race abutting the tubular interface cartridge and has an outer race against which force from the spring is applied.

Abstract: A sliding contact comprises a stationary contact member having an opening extending therethrough and a movable contact member, at least a portion of which is disposed within the opening. Conductive bearing means are disposed within the opening between the stationary contact member and the movable contact member for supporting the movable contact member within the opening and for maintaining an electrical connection between the movable contact member and the stationary contact member. Preferably, the conductive bearing means comprises a plurality of conductive ball bearings.