Abstract: An inner ring 3 is fit to a stepped part 8 formed on the inner end of a hub 2b. A desired pre-load is applied to rolling elements 5 in a state that an outer end face 28 of the inner ring 3 is butted against a step surface 12 formed on the hub 2b. The inner ring 3 is fit to the hub 2b by interference fitting causing a static friction force, which is larger than a thrust load acting on the inner ring 3 based on the pre-loading. Therefore, the inner end face of the inner ring 3 is clamped with a caulking portion, which is formed by expanding outward in the diameter directions a cylindrical portion 18 formed in the inner end of the hub 2b.

Abstract: Rotating vessels that are heated or cooled, often utilize stationary syphons, which provide an outlet passage for the liquid/gas media. The syphon may be supported by adding a syphon support flange to the existing stationary syphon system to provide additional support for the syphon, which helps to add service life time to the syphon and the rotary joint.

Abstract: A method for fixing at least one bearing in place in a bearing retainer involves positioning the bearing in the depression, providing an elastic element which acts in the axial direction on the bearing either before or after the bearing is positioned in the depression so that the elastic element is supported on the bearing in a first axial direction, and deforming a partial area of the bearing retainer so that the deformed partial area of the bearing retainer supports the elastic element in a second axial direction which extends opposite the first axial direction. A bearing arrangement produced according to the present invention includes a bearing retainer having at least one depression in which is positioned a bearing, with a portion of the bearing retainer overlapping a portion of the bearing to form an interlocking connection between the bearing retainer and the bearing in an axial direction.

Abstract: A fixture for pre-loading a pivot assembly has a stationary base and a tool that is axially movable relative to the base. The tool has a platen with a pre-load mass and a cylindrical enclosure. A sphere is suspended within the enclosure but is free to roll and move laterally along three degrees of freedom. The pivot assembly has an external sleeve with a coaxial shaft mounted on bearings. Each ball bearing has an inner ring, an outer ring, and balls in between. The rings are adhesively bonded to the shaft and sleeve. The pivot is placed on the base of the fixture and the tool is lowered. The sphere is free to “float” within the enclosure until it makes contact with the inner ring of the upper bearing in the pivot. Upon contact, the compliant, rolling sphere automatically self-aligns with the pivot. The pre-load mass applies the desired force against the pivot until the adhesive cures.

Abstract: A ball screw device utilizes spacers having concave ball-contacting surfaces with distributed protrusions or dimples. Balls having needle-like recesses may also be used. The spacers are provided in two thicknesses, and the relative numbers of the thinner and thicker spacers are selected in order to ensure retention of the spacers in their proper positions, while providing a small clearance between the balls and spacers to avoid fluctuations or sharp increases in dynamic torque.

Abstract: The present disclosure provides a method of installing a bearing and hub in a steering knuckle. The method provides fitting an outer race into the knuckle with an interference fit, fitting first rolling elements between first raceways such that they seat along the first raceways, ascertaining an axial position of an initially separate inner race that will place the bearing in a predetermined condition of preload when the initially separate inner race is fitted over the hub with an interference fit and against the abutment face, installing the initially separate inner race on the hub with an interference fit and against an abutment face in the positioned ascertained, and capturing the initially separate inner race against the abutment face and in abutment on the hub to insure that it retains the position ascertained and that the bearing operates in preload.

Abstract: A hub (2) includes a spindle (14) which projects through a housing (4) and rotates relative to the housing (4) on a bearing (6) that is located between the spindle (14) and the housing (4). The bearing (6) has two sets of raceways (28,40) that are oblique to the axis x, and in addition rolling elements (36) arranged in two rows between the sets of raceways (28,40). The inner raceways (28) that fit around the spindle (14) and have back faces (32), with the back face (32) for one of the races (26) being against a shoulder (18) from which the spindle (14) projects. Initially, the end of the spindle (14) projects straight beyond the back face (32) of the outer race—indeed, so that the races (26) can be installed over the spindle (14).

Abstract: An assembled idler roll having an outer shell and end bearing assemblies. The bearing assemblies each have an outer race and an inner race. The inner race is press fitted onto a roller shaft to an initial position which is spaced inwardly from a final desired position. The outer shell of the roll is restrained and the shaft is reciprocated along its longitudinal axis to determine the degree of axial movement. The inner race of the bearing assembly is moved from its initial position to its final position as determined by the degree of axial movement.

Abstract: The locus of the displacement of the centers of the balls of a ball bearing is made elliptical and the radial bearing rigidity of the ball bearing in one radial direction is made greater than the radial bearing rigidity in another radial direction orthogonal to the one radial direction, or at least one of the axial length of the portion on the outer diametral surface of the inner race of the ball bearing which is fitted to a shaft and the axial length of the portion on the outer diametral surface of the outer race of the ball bearing which is fitted to a housing is made ½ or less of the bearing width of the ball bearing, whereby the radial rigidity of a ball bearing device is made very small as compared with the radial rigidity in the prior art. As a result, the stability of a swing arm system can be enhanced and higher speed and higher accuracy of control become possible.

Abstract: A wheel bearing assembly for supporting a wheel and apportioned vehicle mass is provided. The assembly includes a spindle member defining a rotational axis with a flange for attaching a wheel and a hub assembly. A bearing assembly has inner and outer bearing members in spaced relationship from one another with a plurality of rolling members interposed between the bearing members to permit relative rotation between the bearing members about the rotational axis. The spindle is deformed around the inner bearing member to prevent axial translation between the spindle and the inner bearing member about the rotational axis. An outer surface of the inner bearing member has a geometric feature for receiving a force applied from a tool during the deformation of the spindle thereby reducing radial deflections of the inner bearing member during the process of deforming the spindle.

Abstract: An improved connecting rod assembly and method for making a connecting rod wherein the installation of the bearing sleeve members in the large bearing end of the connecting rod is improved. The connecting rod is forged, and then notches are cut in the large bearing end to define a separation plane about which the large bearing end is subsequently separated to form a cap member and a body member. Sleeve bearing members are inserted into the cap member and body member. Free ends of the sleeve bearing members project beyond associated surfaces of the cap and body members a predetermined distance. Upon compressive re-attachment of the cap member to the body member, the free ends of the bearing members are compressed and deformed to provide protrusions that extend into the notch. The protrusions help to prevent rotation of the bearing members relative to the bearing housing.

Abstract: To accurately locate a fluid dynamic bearing element along a shaft, the shaft is excited at or near its resonant frequency while applying a press force to the shaft, and holding the bearing element still. The assembly process then becomes a dynamic process, with the result that the positioning or locating of the shaft relative to the cone or other bearing element can be achieved with much greater accuracy.

Abstract: A method and apparatus for more simply and efficiently coupling and decoupling a cylinder in a printing machine. The coupling and decoupling apparatus includes a bearing bushing (11) in a fixed bushing (28). The bearing bushing (11) carries an axial force loaded spindle (10) that is axially displaceable within the bushing (11) between a coupling position in a centering portion (9) of the cylinder and a decoupling position in which a braking system (24, 25) is engaged.

Abstract: An apparatus and method for setting a gap in a hydrodynamic bearing of a disc drive spindle motor. The invention comprises placing an end of the shaft into shaft support apertures in the hub, fitting a thrust bearing counterplate into a recess defined by an annular retaining flange that is proximate the end of the shaft, and deforming the counterplate to form a gap between the end of the shaft and a surface of the counterplate.

Abstract: Apparatus and method precisely preload bearings onto shafts. A swivel plate swivels up to 360° and locks a rotary shaft axially with a motor shaft. A shim and bearing adjacent the shim preload onto shaft shoulder by lock nut secured to the threaded shaft. The lock nut forces the bearing inner race to expand outwardly, preloading the bearing. A force sensor measures torque on the bearing outer race. Measured torque is monitored within a predetermined range to establish the precisely loaded bearing. The method slides a shim onto support shaft shoulder. A bearing is slid onto tapered surface, and lock nut tightened onto the threaded shaft. The lock nut expands the bearing inner race, reducing the distance between the inner and outer races and preloading the bearing. The outer race at a predetermined, constant speed has torque monitored to a predetermined range to provide a precisely preloaded bearing.

Abstract: The invention concerns a method for the installation of pretensioned roller bearings (2), in particular angular ball bearings, for example, in wheel carriers of automobiles, airplanes, and the like. The invention is characterized in that the installation apparatus, with a measurement probe (5), lies against a stop, a shoulder, or the like, in the axial area of the bearing race of one roller bearing, on the shaft side, and that upon tightening the shaft nut (3) against the bearing race of the other roller bearing, on the shaft side, its axial shift with respect to the stop is determined, wherein when the shaft nut is tightened, a torque wrench is used to determine the applied torque, which permits it to differentiate between the actual tensioning process of the roller bearing (2) and the previous process to bring the shaft nut (3) to the stop. The invention also concerns an installation apparatus to implement the method.

Abstract: The invention relates to a wheel bearing assembly for motor vehicles with a bearing provided with an inner ring and an outer ring, the bearing being fitted with its outer ring into a bearing casing and the outer ring being mechanically supported in axial direction on a first side by a supporting surface provided on the bearing casing. Discrete and preferably evenly arranged stop protrusions are formed on the inner circumference of the bearing casing, the outer ring abutting thereon in axial direction on its second side, and the stop protrusions being formed by locally plastic forming the bearing casing.

Abstract: A caulked portion is formed by plastic deformation of a cylindrical portion which is formed at the inner end of a shaft member and is reduced in thickness toward the leading end in a diametrical outward direction. The force required to form the caulked portion is reduced, and the caulked portion is less susceptible to damage. Further, the force of the caulked portion for supporting the inner ring is ensured.

Abstract: An application tool (and a method of use of the tool) is provided for assembling an outboard seal and roller assembly into a hub unit. The tool and method allow for the use of standard seals and standard cage/roller assemblies, thus avoiding the problem associated with the use of special cages or oversized large-diameter seals.

Abstract: A method of assembling components of a universal joint, such as a cross and a yoke, positions and maintains the rotational center axes thereof in co-axial alignment during the assembly process. The universal joint includes a yoke including a body portion and first and second arms, wherein the first and second arms have respective openings formed therethrough. The universal joint also includes a cross including a body portion having a plurality of trunnions extending outwardly therefrom. Initially, an assembly tool having a recess formed therein is supported on the yoke such that the recess is precisely positioned relative to the rotational center axis of the yoke. Then, the cross is supported on the assembly tool such that one of the trunnions is received within and supported by the recess formed in the assembly tool. As a result, the rotational center axis of the cross is co-axially aligned with the rotational center axis of the yoke.

Abstract: A wheel bearing assembly for supporting a wheel is provided. The assembly includes a spindle defining a rotational axis and a support member for supporting the spindle. A wheel hub has a flange for securing the wheel thereto. The wheel hub is supported on the spindle and is rotatable about the rotational axis. A bearing assembly has first and second bearing members in spaced relationship from one another with a plurality of bearings interposed between the bearing members to permit relative rotation between the bearing members about the rotational axis. The first bearing member is arranged adjacent to the spindle and the second bearing member is arranged adjacent to either the wheel hub or the support member. An inner surface of the first bearing member has an annular counterbore. The spindle is deformed into the counterbore to axially secure the first bearing member to the spindle and prevent relative rotation between the spindle and the first bearing member about the rotational axis.

Abstract: A bearing support for facilitating removal and replacement of a bearing and supporting the rotatable shaft while the bearing is removed from the shaft. The bearing support includes a bearing support including a bearing mounting structure for being supported on the machine. A bearing assembly is provided for receiving a portion of the shaft. A bearing housing assembly is positioned between the bearing assembly and the bearing mounting structure. The bearing assembly is supported on the bearing housing assembly and the bearing housing assembly is supported on the bearing mounting structure. The bearing housing assembly is removable from the bearing mounting structure prior to removal of the bearing assembly from the shaft for facilitating removal of the bearing assembly from the shaft. Another aspect of the invention includes a shaft support system for facilitating removal and replacement of a bearing assembly adapted for supporting a shaft on a machine.

Abstract: A fixture for pre-loading a pivot assembly has a stationary base and a tool that is axially movable relative to the base. The tool has a platen with a pre-load mass and a cylindrical enclosure. A sphere is suspended within the enclosure but is free to roll and move laterally along three degrees of freedom. The pivot assembly has an external sleeve with a coaxial shaft mounted on bearings. Each ball bearing has an inner ring, an outer ring, and balls in between. The rings are adhesively bonded to the shaft and sleeve. The pivot is placed on the base of the fixture and the tool is lowered. The sphere is free to “float” within the enclosure until it makes contact with the inner ring of the upper bearing in the pivot. Upon contact, the compliant, rolling sphere automatically self-aligns with the pivot. The pre-load mass applies the desired force against the pivot until the adhesive cures.

Abstract: An apparatus for mounting a bearing onto a shaft is disclosed. The apparatus includes a base plate and a support mounted to and extending upward from the base plate. The support is capable of supporting a shaft. The shaft has a shoulder, a tapered surface adjacent to the shoulder and a threaded portion adjacent to the tapered surface. A shim is positioned on the shaft adjacent to the shoulder and a bearing is positioned adjacent to the shim. The bearing has an inner race, an outer race and a plurality of roller elements positioned there between. The bearing is mounted onto the shaft by a lock nut which is secured to the threaded portion of the shaft and which contacts the inner race of the bearing. The apparatus further includes a motor mounted to the base plate. The motor has an output shaft which is axially aligned with and connectable to the outer race of the bearing. The motor is capable of rotating the outer race of the bearing at a predetermined speed.

Abstract: An inner ring 3 is fit to a stepped part 8 formed on the inner end of a hub 2b. A desired pre-load is applied to rolling elements 5 in a state that an outer end face 28 of the inner ring 3 is butted against a step surface 12 formed on the hub 2b. The inner ring 3 is fit to the hub 2b by interference fitting causing a static friction force, which is larger than a thrust load acting on the inner ring 3 based on the pre-loading. Therefore, the inner end face of the inner ring 3 is clamped with a caulking portion, which is formed by expanding outward in the diameter directions a cylindrical portion 18 formed in the inner end of the hub 2b.

Abstract: In a bearing apparatus having a bearing and a shaft body, the bearing being mounted to the shaft body such that the bearing fits an outside of the shaft body, the bearing being prevented from dropping off by holding a caulked portion against an outer end face of an inner ring of the bearing, and the caulked portion being formed by bending a cylindrical portion to be caulked of the shaft body outward in a diameter direction, an axial force controlling method controls an axial force applied to the bearing through the caulked portion by setting a relationship between relative positions in an axial direction of an end edge on an inner periphery side of a chamfered portion formed at an inner peripheral shoulder portion of the inner ring and a caulking starting point on an inner periphery side of a cylindrical portion to be caulked.

Abstract: An aftermarket retrofit kit is used to prepare control arm bosses of automotive suspension systems to receive new, replacement ball joints. The kit includes a special cutting tool for forming obtuse threads in the apertures of aluminum suspension system mounting bosses for replacement of spent or used steel ball joints originally pressed-fit into forged aluminum control and steering arms. Since unthreaded apertures of bosses of control and steering arm joints in which the original pressed fitted equipment ball joints may be threaded to receive the new joints, avoidance of having to replace expensive original control and steering arms is made possible by the reuse of such arm parts normally discarded. A separate alignment block is included to assure accurate piloting of the cutting tool. Threading of the control arm bosses can be done on or off of the vehicle, and separate kits are provided for upper and lower control arms.

Abstract: A wheel hub assembly includes a first bearing assembly, a wheel hub, a grease retainer, and a second bearing assembly mounted on a spindle. The grease retainer extends between and in engagement with the first bearing cup, and the second bearing cup. The grease retainer is formed of a resilient material, to maintain the retainer against the bearing cups such that the required grease fill is reduced and prevents grease from escaping the bearing assemblies.

Abstract: The hydrostatic fluid bearing comprises a cylindrical stator having orifices for introducing a fluid under pressure, on its inside surface the stator has a split ring constituted by an assembly comprising a plane metal plate and a layer of self-lubricating composite material. The layer of composite material has cells for surrounding orifices for introducing fluid under pressure, once the assembly has been put into place inside the stator.

Abstract: A system is provided for securing a rotating member with respect to a non-rotating member. A hollow member, such as an inner ring of a bearing assembly, includes an extension having an annular outer groove. A tapered sleeve serves to lock the hollow member about a mechanical component, such as a shaft. A nut engageable on the sleeve includes an eccentric front aperture adjacent to a concentric groove, thereby forming a lip of varying depth. The system is engaged by rotation of the nut on the sleeve in one direction, and disassembled by counterrotation of the nut such that a portion of the varying depth lip co-acts with a lip formed by the groove of the hollow member.

Abstract: A method of manufacturing involves providing a sub-unit including a shaft and a bevel gear associated with the shaft, and also providing a first support member and a second support member. A first bearing is positioned between the sub-unit and first support member. A second bearing is positioned between the second support member and the sub-unit. The first support member is connected to the second support member. Preload on the first and second bearings is adjusted. At least the sub-unit, the first support member, the second support member, the first bearing, and the second bearing constitute an assembly capable of being installed in a housing.

Abstract: An inner ring 3 is fit to a stepped part 8 formed on the inner end of a hub 2b. A desired pre-load is applied to rolling elements 5 in a state that an outer end face 28 of the inner ring 3 is butted against a step surface 12 formed on the hub 2b. The inner ring 3 is fit to the hub 2b by interference fitting causing a static friction force, which is larger than a thrust load acting on the inner ring 3 based on the pre-loading. Therefore, the inner end face of the inner ring 3 is clamped with a caulking portion, which is formed by expanding outward in the diameter directions a cylindrical portion 18 formed in the inner end of the hub 2b.

Abstract: A method for fixing at least one bearing in a depression of a bearing retainer involves deforming a portion of the bearing retainer to cause a portion of the bearing retainer to form an overlapping connection of the bearing which axially retains the bearing in the depression. In the first stage of the two-stage deformation process, a first partial area of the bearing retainer is deformed compress the material forming the bearing retainer. In the second stage of the deformation process, a second partial area of the bearing retainer is deformed to form the overlapping connection, in the axial direction, between the bearing and the bearing retainer.

Abstract: The present invention provides a double row taper-roller bearing and a method of assembling a double row taper-roller bearing, which are, when in an assembly, capable of assembling and being assembled by controlling a negative axial gap after the assembly. The present invention-provides also a wheel support structure and a method of the assembling the same structure.

Abstract: Traversing yarn guiding rods in textile machines producing X-packages are often made of carbon fibers for the purpose of reducing the inertia force. These kinds of traversing yarn guiding rods are prone to wear at their bearing points. For this reason, the bearings, having a distance to one another which corresponds to at least twice, preferably three times the traversing stroke, are collectively replaced from time to time, in such a way that the yarn guide rod is supported at different places than before. The replacement bearings are applied staggered to the old bearing points in such a way that the new bearing points now have a distance to the exposed previous bearing points, which distance corresponds to at least one traverse stroke. This results in the replacement bearings acting with a non-worn part of the fiber guiding rod. The life of the yarn guiding rod is thus significantly increased.

Abstract: A hub (2) includes a spindle (14) which projects through a housing (4) and rotates relative to the housing (4) on a bearing (6) that is located between the spindle (14) and the housing (4). The bearing (6) has two sets of raceways (28, 40) that are oblique to the axis x, and in addition rolling elements (36) arranged in two rows between the sets of raceways (28, 40). The inner raceways (28) that fit around the spindle (14) and have back faces (32), with the back face (32) for one of the races (26) being against a shoulder (18) from which the spindle (14) projects. Initially, the end of the spindle (14) projects straight beyond the back face (32) of the outer race—indeed, so that the races (26) can be installed over the spindle (14).

Abstract: A method for forming a brake assembly for a motor vehicle includes a wheel hub, a knuckle, and a brake rotor. The wheel hub includes a neck portion and a flange portion having a flange face. The flange face has a plurality of bolt receiving holes formed therein. The wheel hub is placed in rotational communication with the knuckle. The flange face of the wheel hub has a brake rotor secured thereto. The brake rotor has an inner surface, which is subjected to final finishing in order to reduce lateral run-out of the brake rotor.

Abstract: A method for converting a locomotive traction motor originally equipped with sleeve bearings to roller bearings is provided. The ensuing method includes removing all parts of the original motor leaving only the motor frame. Recesses are then machined in the motor frame at both the pinion end and commutator end. The recesses are sized accordingly, to receive the roller bearings, which have a larger diameter then the sleeve bearings. Upper and lower frame inserts, each having an additional mounting opening, are then mounted to the machined frame to increase the strength and stiffness around the machined regions. A replacement axle is then equipped with the roller bearings, a pair of labyrinth seals, a gear and a pair of wheels. A pair of bearing housings may then be placed over the roller bearings. Each bearing housings has a reservoir that when the traction motor is assembled, is in communication with the roller bearings.

Abstract: A knuckle hub assembly (10) and a method for manufacturing same whereby brake run out is produced includes a knuckle (12), a bearing (28) press fit into the knuckle (12), and a wheel hub (14) coupled to the bearing (28) and rotateable with respect to the knuckle (12). The wheel hub (14) has a flange surface (34) having a relief channel (60) formed therein. A plurality of wheel studs (44) are press fit into bolt opening (42) formed in the relief channel (60). This arrangement provides a flat flange surface (34) for mating with a rotor (42) to minimize brake run out. The knuckle hub assembly (10) is mounted into a floating tool for finish turning of the flange surface (34) to provide minimal run out and maximum flatness.

Abstract: A bushing installation and removal assembly includes mounting table fitted with a vice fixture, a press/ram assembly having a controlled hydraulic press whereby a separate hydraulic repositioning system disposes the work piece into the press/ram assembly in a controlled manner. The worktable, fixtures and press/ram assembly are designed to receive and securely position the housing assembly (work piece) onto a controlled substrate. The substrate is then designed to reposition the housing assembly (work piece) proximate to the press ram, which suitably presses the bushing member onto the housing assembly (work piece). The substrate is then retracted to its original position where the housing assembly (work piece) is removed for further processing.

Abstract: According to one embodiment of the invention, a hole misalignment compensation system includes an outer bushing having a first outside diameter approximately equal to a diameter of a first hole in a first part and a first inside diameter eccentric to the first outside diameter, and an inner bushing having a second outside diameter approximately equal to the first inside diameter and a second inside diameter eccentric to the second outside diameter. The inner bushing is adapted to be positioned such that an axis of the second inner diameter approximately aligns with an axis of a second hole in a second part.

Abstract: Apparatus and method precisely preload bearings onto shafts. A swivel plate swivels up to 360° and locks a rotary shaft axially with a motor shaft. A shim and bearing adjacent the shim preload onto shaft shoulder by lock nut secured to the threaded shaft. The lock nut forces the bearing inner race to expand outwardly, preloading the bearing. A force sensor measures torque on the bearing outer race. Measured torque is monitored within a predetermined range to establish the precisely loaded bearing. The method slides a shim onto support shaft shoulder. A bearing is slid onto tapered surface, and lock nut tightened onto the threaded shaft. The lock nut expands the bearing inner race, reducing the distance between the inner and outer races and preloading the bearing. The outer race at a predetermined, constant speed has torque monitored to a predetermined range to provide a precisely preloaded bearing.

Abstract: A knuckle hub assembly (10) and a method for manufacturing same whereby brake run out is produced includes a knuckle (12), a bearing (28) press fit into the knuckle (12), and a wheel hub (14) coupled to the bearing (28) and rotateable with respect to the knuckle (12). The wheel hub (14) has a flange surface (34) having a relief channel (60) formed therein. A plurality of wheel studs (44) are press fit into bolt opening (42) formed in the relief channel (60). This arrangement provides a flat flange surface (34) for mating with a rotor (42) to minimize brake run out. The knuckle hub assembly (10) is mounted into a floating tool for finish turning of the flange surface (34) to provide minimal run out and maximum flatness.

Abstract: The material of the wall inside a hole in a housing is squeezed toward the center of the using a staking tool with a diameter larger than that of the hole. The material necessary for forming a locking section can be obtained from only a small part of the entire area of the wall of the hole. The amount of material necessary for the entire process is secured and the material is pressed so as to contact with an end face of the outer race using the staking tool, forming the locking section. Accordingly, the locking section provides sufficient strength. Also, since only the small part of the entire area of the wall is necessary as described above, there is no decrease in strength or deformation as to the thin housing.

Abstract: A system for adjusting an adjustable spacer is provided. A high-compression section is adapted to receive the spacer for a bearing assembly. A low-compression section is adapted to receive the bearing assembly. In one aspect, a transfer frame can serve as a mechanical interface between the high-compression section and the low-compression section. Also, the transfer frame can be adapted to transfer to the low-compression section a first travel indicative of a first compression of the spacer with the high-compression section. A sensor can be coupled with the high-compression section and the low-compression section. Further, the sensor can serve to limit the first compression according to a second travel indicative of a second compression of the bearing assembly with the low-compression section. Additionally, the first travel and the second travel are preferably related to provide a desired adjustment (e.g., preloading) to the spacer.

Abstract: A method for securing at least one bearing in a bearing plate provided with an indentation or recessed region for receiving a bearing involves partially swaging at least one positioning face on the bearing plate for accurately or precisely positioning a retaining baffle, positioning the retaining baffle against the at least one swaged positioning face, and materially bonding the retaining baffle to the bearing plate so that the retaining baffle exerts an axial force on a part of the bearing during operation of the bearing. A bearing arrangement includes a bearing plate provided with at least one indentation and at least one partially swaged positioning face, a bearing disposed in the at least one indentation, and a retaining baffle pressed against the positioning face of the bearing plate. The retaining baffle is materially bonded to the bearing plate and is positioned such that the retaining baffle exerts an axial force on a part of the bearing during operation of the bearing.

Abstract: A dynamic pressure bearing apparatus has a rotatable shaft to which a hub is mounted, a disk fixed to the hub, a sleeve which supports the rotatable shaft, and a dynamic pressure bearing formed between the rotatable shaft and the sleeve. The rotatable shaft is rotatably supported by the dynamic pressure bearing. The dynamic pressure bearing apparatus is manufactured by integrating the hub and the rotatable shaft by fixing the hub and shaft to each other, processing the disk mounting surface of the hub after integration, such that relative accuracy between the rotatable shaft and the disk mounting surface can be obtained, and then assembling the rotatable shaft to the sleeve.

Abstract: A method of assembling an idler roll having an outer shell and end bearing assemblies. The bearing assemblies each have an outer race and an inner race. The inner race is press fitted onto a roller shaft to an initial position which is spaced inwardly from a final desired position. The outer shell of the roll is restrained and the shaft is reciprocated along its longitudinal axis to determine the degree of axial movement. The inner race of the bearing assembly is moved from its initial position to its final position as determined by the degree of axial movement.

Abstract: An apparatus and method of precisely preloading a bearing onto a shaft is disclosed. The apparatus includes a base plate and a support mounted to and extending upward from the base plate. The support is capable of supporting a shaft. The shaft has a shoulder, a tapered surface adjacent to the shoulder and a threaded portion adjacent to the tapered surface. A shim is positioned on the shaft adjacent to the shoulder and a bearing is positioned adjacent to the shim. The bearing has an inner race, an outer race and a plurality of roller elements positioned therebetween. The bearing is preloaded onto the shaft by a lock nut which is secured to the threaded portion of the shaft and which contacts the inner race of the bearing. The apparatus further includes a motor mounted to the base plate. The motor has an output shaft which is axially aligned with and connectable to the outer race of the bearing. The motor is capable of rotating the outer race of the bearing at a predetermined speed.

Abstract: Traversing yarn guiding rods in textile machines producing X-packages are often made of carbon fibers for the purpose of reducing the inertia force. These kinds of traversing yarn guiding rods are prone to wear at their bearing points. For this reason, the bearings, having a distance to one another which corresponds to at least twice, preferably three times the traversing stroke, are collectively replaced from time to time, in such a way that the yarn guide rod is supported at different places than before. The replacement bearings are applied staggered to the old bearing points in such a way that the new bearing points now have a distance to the exposed previous bearing points, which distance corresponds to at least one traverse stroke. This results in the replacement bearings acting with a non-worn part of the fiber guiding rod. The life of the yarn guiding rod is thus significantly increased.