Abstract: A bearing module that supports adjacent ends of coaxial shafts, includes an outer ring having first and second axially adjacent raceways and first and second flanges located at the respective ends. A first group of rolling elements rolls on the first raceway, and a second group of rolling elements rolls on the second raceway. A first cage retains the first group of rolling elements circumferentially spaced apart from one another, and a second cage retains the second group of rolling elements. An axial bearing is retained axially between the first and second groups of rolling elements, and has axial bearing rolling elements that are configured for rolling contact with (a) facing axial side raceways on first and second inner rings supported respectively on the first and second groups of rolling elements, (b) the adjacent ends of the two coaxial shafts, or (c) integral washers of the axial bearing.

Abstract: A bearing assembly for supporting a screw-compressor rotor includes a shaft having a center of mass, at least one angular contact ball bearing mounted on the shaft, and at least one cylindrical roller bearing mounted on the shaft. A spacing from the angular contact ball bearing to the center of mass is shorter than a spacing from the cylindrical roller bearing to the center of mass.

Abstract: A combination bearing is configured to support both axial loads and radial loads. The combination bearing includes a bearing housing including a radial bearing ring and an axial bearing cup. Radial rolling elements are located within the radial bearing ring, are configured to support a radial load, and collectively rotate about a central axis. Axial rolling elements are located within the axial bearing cup, are configured to support an axial load, and are axially offset from the radial rolling elements along the axis. An axial washer directly contacts the axial rolling elements. The axial washer is configured to support the axial load and transfer it toward the axial rolling elements. A sealing washer is disposed about the axis and spaced axially from the axial washer. Oil is retained within the combination bearing during free-wheeling conditions with little to no external oil supply.

Abstract: A vehicle-mounted detecting device for a bicycle comprises a force sensing base, a strain touch member for detecting the direction and magnitude of force, and a sensor contacted with the sensor. The detecting device is assembled to a crank and a pedal shaft of the bicycle in a manner of external hanging. The detecting device may obtain a pedaling force detecting message. The message of the rotating speed and the tilted angle message may be obtained by a cadence sensor which is packaged in a ring housing. The messages are finally transmitted to a smart mobile device by a microprocessor which is mounted at a ring outer base.

Abstract: A bearing assembly and a related power transmitting component. The bearing assembly includes a first bearing, which is an angular contact bearing, and a second bearing, which is a tapered roller bearing. The first bearing has a first inner bearing race, a first outer bearing race and a plurality of spherical bearing balls disposed between the first inner bearing race and the first outer bearing race. The second bearing assembly has a second inner bearing race, a second outer bearing race and a plurality of tapered bearing rolls disposed between the second inner bearing race and the second outer bearing race. One of the first inner and first outer bearing races is fixedly coupled to one of the second inner and second outer bearing races for axial and rotational movement therewith. The first and second bearings are configured to handle thrust in a common axial direction.

Abstract: Provided is a double-row roller bearing, which is capable of suppressing a frictional force from being increased due to variation in force of press contact between outer and inner rings and rollers to enable smoother relative rotational movement between the outer ring and the inner ring, and is also suitable for downsizing and higher in versatility.

Abstract: The invention is directed to a rolling bearing arrangement comprising two annular elements that are arranged mutually concentrically and at least regionally inside each other, for connection each to a respective one of two oppositely rotatable system components, and comprising a gap between said connecting elements, such that they are able to rotate in opposite directions about an imaginary axis located at the center of the annular connecting elements and extending approximately perpendicular to the ring plane, wherein at least two rows of rolling bodies are provided in the region of the gap between the connecting elements, wherein the annular connecting elements completely or partially overlap each other in the radial direction and one or more raceways for rolling bodies are arranged in radially overlapping regions of the annular connecting elements, in such a way that the contact angle which the connecting line between the centers of the points of contact of a rolling body with its two raceways makes with t

Abstract: A bearing arrangement for a camshaft and a camshaft are provided. The bearing arrangement includes a bearing point in a bearing support frame that receives a camshaft, a bearing rolling-element cage and a bearing outer sleeve. The rolling-element cage and the outer sleeve are configured such that the outer diameter of the outer sleeve is smaller than the inside diameter of the bearing point and the outer diameter of the rolling-element cage is smaller than the inner diameter of the outer sleeve. The rolling-element cage may be provided with retention features that axially secure the cage to the outer sleeve. The rolling-element cage and/or the outer sleeve may be provided with collars that axially constrain the bearing relative to the support frame. A camshaft including at least one such bearing arrangement is also provided.

Abstract: A radial roller bearing comprises a smooth cylindrical outer ring inserted in a housing with a roller race arranged in the outer ring. The roller race is formed by a plurality of roller-shaped rolling elements inserted in a bearing cage, which holds said rolling elements evenly spaced in a circumferential direction. The rolling elements roll off an outer raceway formed by the inner shell surface of the outer ring, and off an inner raceway formed by the outer shell surface of a shaft to be mounted, or formed by a smooth cylindrical inner ring fitted onto the shaft. The axial guidance of the roller race is accomplished by way of two separate flanged rings abutting the axial sides of the outer ring which, together with the outer ring are axially fixed in place by way of safety elements engaging with circumferential grooves in the housing. The safety elements for the flanged rings and the outer ring, and the flanged rings are fixedly connected.

Abstract: A combined load rolling bearing including a roller assembly with a first cage including a plurality of radial cylindrical rollers and a plurality of axial cylindrical rollers is provided. The radial cylindrical rollers are supported so that they can roll on a radially outer race of a first bearing ring and a radially inner race of a second bearing ring. The axial cylindrical rollers are supported so that they can roll on a first axial race of the first bearing ring and an intermediate axial ring. A needle roller assembly is supported between the intermediate axial ring and a second axial race of the second bearing ring. The needle roller assembly includes a second cage with a plurality of needle rollers and the needle roller assembly rotates at a speed differential between the radial cylindrical rollers and the axial cylindrical rollers.

Abstract: A rolling-element bearing assembly includes an inner ring, an outer ring and a plurality of rolling elements disposed between the inner ring and the outer ring on a common pitch circle diameter. A retaining device is attached to one of the inner ring and the outer ring and holds the rolling-element bearing assembly together without falling apart. The rolling elements include balls and rollers disposed on the common pitch circle diameter in an alternating manner. Further, at least one of the inner ring and the outer ring includes a raceway groove that axially supports the roller bearing balls.

Abstract: A rolling-element bearing support module includes a support for mounting on an end wall of a machine. The machine has a bore in the end wall and a shaft in the bore, and the shaft has an abutment surface in a plane of the end wall. A rolling-element bearing assembly of the module includes a first bearing and a second bearing on the shaft, and a side surface of the first bearing is aligned with a plane corresponding to the end surface of the machine. The first bearing is formed to transmit, via the side surface, axial forces in at least one direction and the second bearing is disposed on a side of the first rolling-element bearing that faces away from the side surface of the first bearing.

Abstract: A thrust bearing assembly includes a single-piece thrust plate and thrust shaft flange having a generally cylindrical body portion, a frustoconical body portion and a bore extending through the cylindrical body portion and the frustoconical body portion. The bore defines a first bore section and a second bore section. A lip extends between the first and second bore sections. The first bore section, the second bore section and the lip are configured to receive a thrust shaft and axial thrust forces transmitted therefrom. The thrust bearing assembly also includes a bearing assembly in operable communication with the single-piece thrust plate and thrust shaft flange. The bearing assembly supports rotation of the thrust shaft and includes a plurality of first rolling elements. The bearing assembly includes a bearing cage to retain the first rolling elements and a plurality of second rolling elements disposed between the bearing cage and the thrust shaft.

Abstract: Embodiments of a combination bearing are provided, as are embodiments of a valve assembly including a combination bearing. In one embodiment, the valve assembly includes a flowbody having a flow passage therethrough, a drive shaft rotatably mounted within the flowbody, a valve element mounted to the drive shaft and positioned within the flow passage, and a combination bearing coupled between the flowbody and the drive shaft. The combination bearing comprises an integral radial load/thrust ring coupled to the drive shaft, and a thrust washer substantially adjacent the integral radial load/thrust ring, as taken along the longitudinal axis of the combination bearing. An outer radial ring circumscribes the integral thrust/radial load ring. A first plurality of rolling elements is captured between the thrust washer and the integral radial load/thrust ring, and a second plurality of rolling elements is captured between the outer radial ring and the integral radial load/thrust ring.

Abstract: Embodiments of a combination bearing are provided, as are embodiments of a valve assembly including a combination bearing. In one embodiment, the valve assembly includes a flowbody having a flow passage therethrough, a drive shaft rotatably mounted within the flowbody, a valve element mounted to the drive shaft and positioned within the flow passage, and a combination bearing coupled between the flowbody and the drive shaft. The combination bearing comprises an integral radial load/thrust ring coupled to the drive shaft, and a thrust washer substantially adjacent the integral radial load/thrust ring, as taken along the longitudinal axis of the combination bearing. An outer radial ring circumscribes the integral thrust/radial load ring. A first plurality of rolling elements is captured between the thrust washer and the integral radial load/thrust ring, and a second plurality of rolling elements is captured between the outer radial ring and the integral radial load/thrust ring.

Abstract: A bearing assembly for radial and axial support of a shaft part relative to a housing includes two radial antifriction bearings located at an axial distance to one another on the shaft part and two axial antifriction bearings located at an axial distance to one another on the shaft part. To create better support, the bearing assembly has an outer bearing ring which is inserted into a hole of the housing and which, made as a one-piece component, has tracks for the two radial antifriction bearings and for the two axial antifriction bearings.

Abstract: A bearing for a connecting rod includes a retainer having a plurality of pockets spaced about a circumference of the retainer, a first end that defines a first flange, and a second end that defines a second flange opposite the first flange. The bearing also includes a plurality of radial bearing elements that supports a radial load, and each of the plurality of radial bearing elements is positioned in one of the plurality of pockets. A first plurality of axial bearing elements is positioned on the first flange and receives at least a portion of an axial load, and a second plurality of axial bearing elements is positioned on the second flange and receives at least a portion of the axial load.

Abstract: The invention relates to polyacetal compositions comprising a mixture of (i) a polyacetal resin, (ii) p-aramid particles and (III) a vinyl-terminated dimethyl siloxane polymer. These compositions are useful in preparing molded articles exhibiting a good balance between high self-lubricating properties and wear resistance, and especially useful in articles that are in motion with respect to other parts they are in contact with.

Abstract: A universal joint having a spider provided with four staggered journals. A socket having an axial bearing in addition to a radial bearing is associated with each journal. The axial bearing has rolling bodies that are guided between a front surface of the journal and the bottom of the universal joint socket.

Abstract: A hot gas valving system for a ground-based power generation system includes a gas flow conduit having a wall and defining a path for fluid flow and a butterfly valve located in the wall and transversely across the path for fluid flow. The butterfly valve includes a first raceway defined by an inner ring and an outer ring, a second raceway defined by an inner ring and an outer ring, a combination of ball bearings and roller bearings retained in each raceway, an axle rotatably mounted in the inner rings of each raceway and cooperably rotatable therewith, and a baffle mounted longitudinally along the axle and extending from the axle into the path of fluid flow. Upon rotation of the axle, the baffle restricts or permits fluid flow.

Abstract: Bearing systems for high speed rotating shafts, such as turbocharger shafts, include a first ball bearing in one end of an elongated cylinder capable of carrying axial thrust in both directions and a second ball bearing in the opposite end of the elongated cylinder with its outer race slideably mounted in the cylinder against the biasing force of a preload spring. The second ball bearing is free to move axially with the shaft upon axial expansion of the shaft when exposed to high temperature. The inner races of the ball bearings are clamped to and rotate with the shaft as part of the rotating assembly.

Abstract: A needle bearing is designed for a high speed drill or MDA surgical instruments that include alternate rollers made from metallic and plastic or synthetic material mounted in the bore of the housing of the drill or MDA and the shaft being supported by the needle bearing. The inner race, outer race and/or cage may be eliminated from the assembly.

Abstract: The invention provides an assembly for driving accessories of a gas turbine, the assembly comprising: a gearbox having a front side face and a rear side face opposite the front face and having mounted therein a first gear train made up of three toothed wheels meshing with one another, and a second gear train made up of four toothed wheels meshing with one another; a power transmission shaft that is coupled in rotation with the first and second gear trains by means of a toothed wheel pair, and that emerges from the front side face of the gearbox; and nine distinct gas turbine accessories mounted against the side faces of the gearbox, and each including a respective drive shaft that is coupled in rotation with one of the toothed wheels of the two gear trains.

Abstract: The invention relates to a bearing assembly (1) comprising at least one first bearing (6) that acts as an axially free radial support (5) and at least one second bearing (8) that acts as a radially free axial support (7). According to the invention, said bearings (6,8) share a common rotational axis (19) and at least one first bearing ring (9) of the first bearing (6) and a second bearing ring (10) of the second bearing (8) are rotationally fixed in relation to at least one bearing seat.

Abstract: An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.

Abstract: A vehicle wheel bearing apparatus has an outer member with a body flange and double row outer raceway surfaces. An inner member includes a wheel hub and an inner ring. They include inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces. Outer side rolling elements of the double row rolling elements are balls and inner side rolling elements of the double row rolling elements are tapered rollers. A pitch circle diameter of the inner side tapered rollers is set smaller than that of the outer side balls. A substantially conical recess is formed at an outer side end portion of the wheel hub. The depth of the recess extends to at least near the bottom of the inner raceway surface of the wheel hub. The thickness of a portion of the wheel hub where the inner raceway surface is formed is set within a predetermined range.

Abstract: The invention relates to a pitch bearing for a wind turbine comprising a first and second axial row of bearing rolling elements, said rows being positioned in a distance of each other, and one or more radial rows of bearing elements, where said one or more rows of bearing elements are positioned outside an area defined in between said first and second axial row. The invention also relates to a wind turbine and method for servicing a bearing hereof.

Abstract: A vehicle wheel bearing apparatus has an outer member formed with a body mounting flange on its outer circumferential surface. The body mounting flange is to be mounted on a knuckle of the vehicle. The outer member inner circumference includes double row outer raceway surfaces. An inner member includes a wheel hub with a wheel mounting flange formed on one end. A cylindrical portion extends from the wheel mounting flange. At least one inner ring is press-fit onto the cylindrical portion of the wheel hub. The inner ring outer circumference is formed with an inner raceway surface arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer raceway surfaces and inner raceway surfaces of the outer member and the inner members. Seals are mounted within annular openings formed between the outer member and the inner member. The inner ring is axially secured relative to the wheel hub by a caulked portion.

Abstract: A bearing cartridge which is constructed not to be disassembled for re-packing with grease or otherwise and which may be quickly and easily replaced in the field. For high temperature applications such as sinter or pellet car wheels, the bearing cartridge is lubricated by a high temperature solid lubricant, and the rolling elements preferably comprise cylindrical rolling elements for bearing radial loads and spherical rolling elements for bearing axial loads. For ultra high temperature applications such as furnace car wheels, the bearing cartridge is lubricated by a ultra high temperature lubricant composed of a graphite and molydenum paste. In order to economically provide small furnace car bearing cartridges, a two-piece bearing cartridge is provided with rolling elements, preferably having cylindrical central portions for bearing radial loads and conically shaped axially outer end portions for bearing axial loads, between the races, the rolling elements insertable by means of a feeder slot.

Abstract: A bicycle pedal adapted to be attached to a crankarm having a pedal axle including an attachment portion formed at one end thereof for attachment to the crankarm, the pedal axle having a small diameter portion formed adjacent the attachment end. A first and second needle bearings are arranged in the region of the small diameter portion of the pedal axle and spaced apart from each other axially for supporting a tread surface/s in a radial direction of the pedal axle. A ball bearing is disposed between the first and second needle bearing for maintaining axial positioning of the pedal body.

Abstract: A rotor shaft that is supported by a deep groove ball bearing a radial load and a unidirectional thrust load, and by a cylindrical roller bearing for bearing a radial load. Also, a pretension applying means is provided for applying a pretension to the rotor shaft in the same direction as the thrust load which is borne by the deep groove ball bearing.

Abstract: A hub of a bicycle includes a hub shell which has two dust caps threadedly engaged to both ends of the hub shell, a sleeve inserted in the hub shell and located between the two dust caps, an axle rotatably inserted in the sleeve and has a first and a second flanges extending therefrom for a bearing disposed between the first flange and one of the two dust caps and between the second flange and the other dust cap, the axle having a third and a fourth flanges extending therefrom between the first and the second flanges, a first bearing and a second bearing respectively disposed between the first and the third flanges and between the second and the fourth flanges.

Abstract: A mechanical oscillator including a shaft having an endless groove in its periphery, a nut body carried by and slidable along the shaft at the location of the endless groove, and a roller pin carried by the nut body, having a nose portion extending into and engaging a wall of the endless groove and having a tail portion disposed deeply in the nut body. A plurality of anti-friction bearings is carried by the nut body, the bearings carrying the roller pin. The anti-friction bearings include both a ball bearing and a needle bearing, the ball bearing being disposed adjacent the nose portion of the roller pin, and the needle bearing being located adjacent the ball bearing and engaged with a tail portion of the roller pin. Multiple roller pins can be used, carried on two carrier strips respectively, which are axially displaced and disposed at opposite sides of the nut body. The carrier strips and associated roller pins can be removed as units, thereby simplifying replacement as required by damage or wear.

Abstract: A three-race bearing for rolls or pressure rollers having inner and outer races and a common center race forming an outer roller bearing which is exclusively a radial bearing and the inner roller bearing which is exclusively an axial guiding rolling bearing.

Abstract: A mechanical oscillator including a shaft having an endless groove in its periphery, a nut body carried by and slidable along the shaft at the location of the endless groove, and a roller pin carried by the nut body, having a nose portion extending into and engaging a wall of the endless groove and having a tail portion disposed deeply in the nut body. A plurality of anti-friction bearings is carried by the nut body, the bearings carrying the roller pin. The anti-friction bearings include both a ball bearing and a needle bearing, the ball bearing being disposed adjacent the nose portion of the roller pin, and the needle bearing being located adjacent the ball bearing and engaged with a tail portion of the roller pin. The roller pins are carried on two carrier strips respectively disposed at opposite sides of the nut body. The carrier strips and associated roller pins can be removed as a unit, thereby simplifying replacement as required by damage or wear.

Abstract: A bearing block has a sheave rotatably mounted between a pair of side plates. A plurality of exposed ball bearings are mounted in the side plates for bearing engagement with the sides of the sheave. The ball bearings can circulate and are either provided in a circular groove or in arcs having a ball return channel connected between the ends of each arc. Location of thrust bearings in the side plates allows for reduction in mass of the sheave and increased space for main bearing capacity.

Abstract: A bearing unit consists of a radial bearing 1 and an axial bearing 2, the outer ring 3 of the radial bearing 1 being extended at one end in the axial direction to hold the axial bearing 2.So that the bearing unit is able to absorb large radial and axial forces and is reliably sealed off against contamination from the outside, the outer ring 3 of the radial bearing 1 consists of a solid piece of material, and the extension 3.sup.a of the outer ring 3 is provided, starting from the end surface 4, with a bore 4.sup.a to hold the axial bearing 2, this bore being sealed by a bearing housing cover 6, which rests against the end surface 2.sup.a of the axial bearing 2 and is connected to the outer ring 3.

Abstract: A roller body or plain bearing component exhibits a core body (1) of ceramic material which is coated with a lapped hard layer (3) (e.g. titanium carbide, Diamond . . . ).

Abstract: A bearing comprises a metallic outer tube having a flange, a inner tube of resin having a flange, radial rollers, thrust balls and a collar. A plurality of roller receiving grooves are formed on the outer periphery of the inner tube, while a plurality of roller receiving recesses are formed on the flange of the inner tube. The receiving grooves are formed in parallel relation to the bearing axis. The receiving recesses are formed circumferentially in concentric relation to the bearing axis. Each of the rollers received respectively within the receiving groove is rotatable. Grease is possibly apply to an outer peripheral surface of the inner tube body and a flange surface thereof. The cylindrical outer tube covering the entirety has both ends which are bent toward the axis. As corrosion countermeasure, it is preferred to form metallic parts of the bearing with stainless steel.

Abstract: The elements of an axially-aligning, eccentrically-adjustable, three-ring anti-friction roller bearing are arranged to compensate for inevitable small deformation and bore alignment errors for the journals of blanket cylinders of printing presses. Rows of rolling elements are disposed between the three bearing rings, the outer one of which has an arcuating curved swing surface. For the purposes of increasing the radial rigidity of the anti-friction mounting and for taking radial forces, the roller bearing rows include cylindrical roller bearings. In addition, there are provided, at least at one axial end, ball bearings or cross-roller axial bearings to resist axial forces. The three bearings rings are braced relative to one another axially and/or radially by a lock nut or the like threaded on the journal for urging the inner bearing ring against the bias of a spring engaging a shoulder on the journal on the other side of the bearing.

Abstract: A stud type track roller bearing includes a shaft provided with a flange, an annular side plate located in an opposed relationship and fixedly attached to the shaft, a ring fitted onto the flange, a plurality of rollers interposed between the ring and the shaft, a plurality of balls interposed between the ring and the flange also between the ring and the side plate, a retainer for retaining the rollers in position. The rollers mainly serve to support the load in the radial direction and the balls mainly serve to support the load in the axial direction.

Abstract: A profiler particularly adapted for finishing the surfaces and contours of dies and molds. The profiler employs a cam assembly which converts rotary input motion to reciprocating output motion for operating a reciprocating member having a suitable tool attached thereto. The profiler is designed to generate substantially lower temperatures within the bearings supporting the cam assembly, and the bearings themselves are particularly designed to be easily replaceable in a sleeve which, with the bearings, form a bearing cartridge. The use of the bearing cartridge eliminates the need to individually install each bearing within the housing of the profiler. The bearing cartridge also includes a shaft which delivers the rotary motion from an external source to the cam assembly. Both the cam assembly and the bearing cartridge are disposed within a cavity in the housing.

Abstract: A bearing block having an inner and outer race is provided with an enlarged axial opening through the unloaded portion of the inner race and is selectively reinforced in the region carrying the load, in order to provide an improved strength to weight ratio.

Abstract: A bearing mounting with self-compensation for thermal expansion. A rotor is mounted in a housing by way of a first bearing having an outer race mounted in the housing and an inner race mounted on the rotor. The inner and outer races are relatively axially movable. A second bearing is mounted on an end of the rotor. A resilient member maintains the inner race in engagement with the outer race in response to relative axial movement between the inner and outer races due to varying thermal expansion rates between the housing and the rotor.

Abstract: A housing (1) of a rotary machine comprises a low-pressure side (2) and a high-pressure side (3), working-fluid inlet and outlet channels, and at least one rotor (7), which when the machine is working is urged by a working fluid towards the low-pressure side (2). The rotor includes a thrust balancing arrangement (15, 16) for relieving the load on the thrust bearings (11) of the machine, through the medium of an auxiliary bearing (17) and in dependence on pressure fluid supplied to the thrust balancing arrangement, the pressure of which fluid is contingent on the operating conditions of the machine. A relatively large part of the axial load is taken-up by an auxiliary thrust bearing (17), which is readily replaceable. The auxiliary bearing (17) is mounted on an outermost part of the rotor journal shaft (18), on the high-pressure side (3) of the rotor, between a detachable locking device (27) for the auxiliary bearing (17) and the thrust balancing arrangement.

Abstract: A bearing system for mounting a wind generator rotor on a stub shaft comprises two axially spaced bearing units each made up of a skew joint bearing, a needle or cylindrical roller bearing placed around it and a thrust bearing arranged to the side of these bearings in order to take up vertical forces. At least two rings of the bearings form a non-rotary ring unit.

Abstract: The combined radial and thrust bearing has an annular series of rollers in the annular space between an inner race and an outer race for taking radial forces. The thrust bearing part includes a pair of axially spaced apart washers at each longitudinal end of the bearing. An annular series of balls are located in the annular space between the washers. The ball bearing retainer is dimensioned so that a very close clearance exists with the two washers in order to maintain a very small labyrinth clearance for sealing purposes.

Abstract: The present invention relates to a bearing device particularly intended to be used in the type of poker vibrator whose rotor shaft (2) exhibits an eccentric arranged between two needle roller bearings (3,4). Besides being carried in these bearings, the rotor shaft (2) is also carried in a deep-groove ball bearing (5) intended to take up any axial forces acting on the rotor shaft. In order to relieve it from radial forces, the deep-groove bearings (5) is mounted in accordance with this invention with a positive clearance in both the radial and axial directions. The radial clearance can thereby be provided either between the deep-groove ball bearing's outer race (6) and the bearing sleeve (7) or between its inner race (8) and the rotor shaft (2). The purpose of the axial clearance is to permit the radial movement of the deep-groove ball bearing (5) that is the purpose of the radial clearance.

Abstract: In a worm wheel for a roller worm drive, each roller is movable along its axis relative to the body of the wheel, and biased towards an extended position by a spring. The springs are mounted in the space between inboard and outboard bearings associated with each roller, so as to conserve room within the roller wheel and hence permit use of large, robust, anti-friction bearings. In particularly preferred arrangements, the outboard anti-friction bearing can be used to limit outboard movement of each roller relative to the wheel body, and may also serve to transmit inboard-directed thrusts from the roller to the body via the biasing spring. The overall arrangement provides enhanced load carrying capacity and compactness in roller worm drives.

Abstract: A device for axially supporting a rotating roller (1) resting axially on a fixed frame, at each end, by a contact ball bearing (3). According to the invention, the contact ball bearing (3) is mounted on the end of a support piece (5) consisting of a cylindrical insert (51) extended, on the roller side, by an enlarged base piece (52), fitting inside a recess (6) and bearing, in the axial direction, against the end wall (62) of the recess (6), by an axial bearing (66) and, in the radial direction, against the side wall (61) of the recess (6), by a rolling bearing (65) centering the insert (51) about the axis of rotation (10), the assembly being held in position by a cap (7) closing the recess (6).