Abstract: In summary, the invention relates to a method for forming an end-side toothing arrangement of a roiling bearing, in particular a wheel bearing. The aim is to improve the uniformity of the end-side toothing arrangement and to allow a greater tooth depth. This is achieved by two method steps in that, in a first step before the reshaping of an end piece of a hub, a die is axially arranged on the rolling bearing in a preassembled state and, in a second step during the reshaping of the end piece and the shaping of the end-side toothing arrangement, the die radially delimits a radial recess of the rolling rivet collar as it forms. In addition, the die reduces or prevents radial widening of the inner ring.

Abstract: A bearing unit includes an outer ring member having an outer periphery on which a flange portion is formed, the flange portion being fitted to a vehicle body side; an inner ring member that is rotatably inserted in the outer ring member; and rolling elements in double rows, which are rollably arranged between the outer ring member and the inner ring member, wherein bolts are press-fitted in bolt holes formed in a peripheral edge portion of a wheel fitting flange that is formed on an outer periphery of the inner ring member, and a recessed portion is formed in an outer peripheral surface of the wheel fitting flange.

Abstract: A securing element (1, 11, 12, 13, 14) made of sheet metal with an annular body (3, 12a, 26) and with holding tongues (4, 41, 42, 43, 44) which emerge from the annular body (3, 12a, 26) and end at a hole (6) in the securing element (1, 1, 12, 13, 14), which hole is centred with respect to the centre axis (5) of the securing element (1, 11, 12, 13, 14), wherein the hole (6) leads axially in the same direction as the centre axis (5) through the securing element (1, 11, 12, 13, 14) and, at radial narrowest hole cross sections of the hole (6), is bounded at least by end edges (7, 71, 72, 73, 74) formed on the end sides of the holding tongues (4, 41, 42, 43, 44).

Abstract: A bearing assembly comprises at least one bearing that includes at least one outer ring having a recess at at least one circumferential position. A bearing support has at least one receptacle that receives the at least one outer ring. At least one engagement element is disposed on or in the bearing support and engages in the recess in an interference-fit manner to prevent the rotation of the outer ring relative to the bearing support.

Abstract: A bearing housing includes a bearing housing body, and a shaft support part formed at the center of the bearing housing body, wherein the shaft support part includes at least one rib groove to fix a bearing bush located on the inner circumferential surface of a front end of the shaft support part. The manufacturing method of the bearing housing uses a first mold and a second mold to form an external appearance of the bearing housing and a central core to form a shaft support part of the bearing housing, and includes inserting a bearing bush onto the outer circumferential surface of the central core, and fixing the bearing bush inserted onto the outer circumferential surface of the central core by at least one bush fixing rib formed on one of the first mold and the second mold.

Abstract: A rotor shaft is supported in a rotatable manner at both ends by bearings respectively disposed to a housing forming a part of a stator and provided with a positioning portion of the bearing in at least one shaft end. The positioning portion is formed of an annular step-like rise portion that abuts on a circular arc surface provided to an inner ring corner of the bearing. A rotor shaft capable of holding the bearing in a stable manner over a long period is thus obtained without increasing the number of components and the numbers of working processes and assembly man-hours for the shaft. It thus becomes possible to solve problems, such as an increase in cost due to a large amount of working margin and increases of the direct material cost and in weight due to a larger finishing diameter of the shaft.

Abstract: A mechanism and method for locking a bearing to a shaft includes a split sleeve and a receptive flange adapted to be fixed to the bearing. A positioning flange is coupled to the split sleeve. A screw extends through the positioning flange and threadingly engages the receptive flange. Rotation of the screw in a first direction axially drives the sleeve into engagement with the bearing to collapse the split sleeve into engagement with the shaft.

Abstract: A spline lubrication apparatus is disclosed for lubricating a spline of a pump drive. The apparatus includes a housing and a rotatable spline which is disposed within the housing. The spline includes a shaft having a plurality of longitudinally extending splines. A gear is rotatably supported within the housing and includes a splined bore for the rotatable reception therein of the rotatable spline. An adapter is secured to the housing and defines a cavity for the rotatable reception therein of the splines and splined bore. A plurality of pockets are in fluid communication with the cavity such that when the splines and splined bore are rotating within the cavity, the flow of the lubricant within the cavity around the splines and splined bore is interrupted by the pockets. The arrangement is such that the flow of lubricant collects within the pockets and cascades onto the splines and splined bore for enhancing the lubrication thereof.

Abstract: A roller bearing for a shaft that has a cylindrical peripheral surface, the bearing including a race (12) to be fitted onto the shaft, and roller bodies (16) arranged to roll on the race (12), the race (12) having a polygonal internal cross-section, so that it engages the peripheral surface of the shaft only in the vicinity of the center of each side (28) of the polygon.

Abstract: A knuckle-hub assembly including a knuckle and wheel bearing, and a retainer that is preferably arranged within a radial recess of the knuckle and a radial recess of the wheel bearing. The knuckle includes an inner radial surface defining a passage, the inner radial surface having a first radial recess. The first radial recess is preferably located in an intermediate region along a longitudinal axis of the passage. The wheel bearing includes an outer radial surface defining a second radial recess that is located in an intermediate region along the length of the bearing. The radial recesses of the knuckle and wheel bearing are generally axially-aligned upon installing the bearing in the knuckle's passage. The retainer has a generally constant cross-sectional profile about its circumference and includes an inner wall surface having a second portion and the first portion that is disposed at an angle relative to a first portion.

Abstract: A self-aligning miniature ball bearing assembly is disclosed for being pressed into an opening formed in a substrate such as a sheet, a pillar block, a mounting flange, or a shaft. In one embodiment, the assembly is self-clinching when pressed into the opening and in an alternate embodiment the assembly is press-fittable into the opening and held with a friction fit. The miniature ball bearing of the assembly is mounted within a retainer and held against an angled bearing seat by a elastomeric compression ring. This allows the axis of the ball bearing to assume any orientation within a cone having a half angle of about 5 degrees with respect to an axis of the retainer. The ball bearing is thereby self-aligning upon receiving a shaft to be rotationally mounted in the assembly.

Abstract: A drive wheel bearing device is provided with an outer member, an inner member, double-row rolling elements and a constant velocity joint. The inner member includes double-row inner races opposite outer races of the outer member, a first inner member, and a second inner member formed with at least one of the double-row inner races, the first inner member and the second inner member being inseparably coupled together at a flange-like swaged portion. The constant velocity joint includes an outer joint member press-fitted to an inner periphery of the first inner member with torque transmission means formed therebetween that transmits torque by engagement of a plurality of axially extending teeth, wherein the torque transmitting teeth of the first inner member have a tooth profile that is controlled within a specified range over the entire axial length of the teeth.

Abstract: An assembly for a turbocharger can include a locating washer having an axis and a perimeter that includes a chord segment defined by an apothem measured from the axis; a bearing assembly that includes an outer race having an axis and a perimeter that includes a chord segment defined by an apothem measured from the axis; and a housing that includes a bore for receipt of the bearing assembly and a recess for receipt of the locating washer to space apart the axes of the locating washer and the outer race by a distance greater than the sum of the apothems that provides for contact between the chord segments upon rotation of at least one of the locating washer in the recess and the outer race in the bore. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A decoupling system for a rotary shaft of an aircraft turbojet, the decoupling system including: a rolling bearing including rolling elements inserted between a first ring fastened to a stationary bearing support and a second ring mounted in a mounting chamber fastened to a rotary shaft; a transmission mechanism transmitting rotary torque from the rotary shaft to the second ring; a mechanism allowing the second ring to move radially relative to the mounting chamber when a static force associated with an unbalance affecting the rotary shaft exceeds a predetermined threshold; and a plurality of leaktight flexible bags interposed between the second ring and the mounting chamber and each including a heterogeneous structure including a porous capillary solid matrix and an associated liquid relative to which the matrix is lyophobic.

Abstract: A pivot assembly bearing having a bearing inner ring, a shaft, a bearing outer ring, a housing, and an UV curable anaerobic adhesive fixing the bearing inner ring to the shaft, and the bearing outer ring to the housing, wherein the adhesive includes 15 to 25% of urethane acrylate, 45 to 55% of acrylic acid diester, less than 3% of acrylic acid monomer, 15 to 30% of hydroxyalkylmethacrylate, less than 3% of anaerobic catalyst, and less than 3% of photopolymerization initiating agent, and in addition, a coloring agent, if necessary. The pivot assembly bearing reduces outgas, shortens adhesive curing time, and no tack at the adhesive surface is obtained.

Abstract: A quick change bearing holder apparatus for a rotating shaft including a shaft housing, a conical bearing holder and a bearing retainer element. The shaft housing has a conical socket. The conical bearing holder has an outer conical surface compatible with the conical socket of the shaft housing. The bearing retainer element mounts to the shaft housing to urge the bearing holder into the conical socket of the shaft housing. Lubrication feed lines and openings and drain lines and openings may be included in the shaft housing and conical bearing holder. Lubrication may further be facilitated using circumferential grooves in the shaft housing or the conical bearing holder. The outer conical surface of the conical bearing holder may have a taper angle that forms a self ejecting taper.

Abstract: A journal bearing assembly includes a journal shaft configured to be mounted in a pulverizer. The journal shaft has a lower bearing receiving surface proximate a lower end thereof, and an upper bearing receiving surface spaced apart from the lower bearing receiving surface axially. A lower journal bearing is mounted on the lower bearing receiving surface of the journal shaft. An upper journal bearing is mounted on the upper bearing receiving surface of the journal shaft. An upper journal housing is mounted on the upper journal bearing for rotational movement relative to the journal shaft. A lower journal housing is mounted on the lower journal bearing for rotational movement relative to the journal shaft. The lower journal housing is mounted to the upper journal housing for common rotation about the journal shaft. The journal bearing assembly has a loading point defined between the upper and lower journal bearings.

Abstract: A constant velocity joint support bearing system having a bearing assembly supporting a first shaft connected to one member of the constant velocity joint. A first labyrinth seal on one axial side of the bearing assembly is formed by a shoulder that is unitary with the outer member of the constant velocity joint and by a radially inward projection on a bearing support bracket holding in place the outer race of the bearing assembly. A second labyrinth seal is formed between a cylindrical section of the bearing support bracket and an annular member that axially retains the bearing on the first shaft. Both the bearing support bracket and the annular member are formed from stamped sheet metal. The shoulder and the annular member are shaped to promote centrifugal slinging of contaminants away from the bearing assembly.

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: A bearing and housing assembly for irregular shaped housings including a circular extension, retention and distortion relief features that can mitigate shape distortion of bearings.

Abstract: A wind turbine includes a nacelle and a rotor, the rotor being rotatably mounted on the nacelle by means of at least one main bearing unit. The wind turbine is characterized in that the main bearing unit includes at least one outer ring, at least one center ring and at least one inner ring and wherein the center ring is capable of rotation in relation to the outer ring and the inner ring or the outer ring and the inner ring are capable of rotation in relation to the center ring. A method for servicing a main bearing unit of a wind turbine and a use hereof are also provided.

Abstract: An apparatus and associated method involving an actuator assembly having an actuator body defining a bore and a bearing assembly in the bore. The bearing assembly has a shaft, and further has a bearing having an inner race that is affixed to the shaft and an outer race that is rotatable relative to the inner race. The bearing also has a sleeve defining an annular rigid portion circumscribing the outer race and affixed thereto. The sleeve further defines an annular predictably deformable portion depending from the rigid portion that is entirely disposed longitudinally distant from the outer race and sized to deform when press fit into the bore to operably align the shaft in the bore.

Abstract: An improved bicycle bottom bracket system and methods of manufacturing and installing such a system. The improved system may include bearings mounted within bearing cups on either side of the bottom bracket shell of a bicycle frame. The bearing cups may be threaded together, and one bearing cup may include a collet portion expandable by the other bearing cup.

Abstract: There are provided a hub bearing, a speed reduction mechanism, and an in-wheel motor, including an inner race portion which is fixed to a support mechanism, an outer race portion which is connected to a wheel, and a rolling element which is disposed between the inner race portion and the outer race portion, and the outer race portion includes an outer race member, a wheel flange, and a fixation mechanism. The end surface of the wheel flange away from the outer race member in a direction parallel to a rotation shaft extends to the rotation shaft in relation to the inner race portion in the radial direction of the rotation shaft.

Abstract: A bearing support is configured to retain at least two bearings disposed closely adjacent to each other in a parallel relationship. Each bearing includes a bearing outer ring having a cylindrical outer circumferential surface. The bearing support comprises at least first and second portions that are connected together. The first portion is formed as a component that has cylindrical openings configured to receive or seat the respective bearing outer rings and to surround the entire circumference of the respective bearing outer ring. The second portion is formed as a support plate. A bearing assembly includes the bearing support with a bearing seated in each of the respective cylindrical openings.

Abstract: A bearing unit for driving wheels, and a manufacturing method thereof, includes a hub, a bearing, and a constant velocity universal joint, such that a process for assembling the bearing unit to a knuckle member is simplified. In order to achieve this, a hub (10) and an outer joint member (31) of an out-board side constant velocity universal joint (30) are plastically joined together. An outer peripheral surface (26a) of an outer member (26) is press-fitted into an inner peripheral surface of the knuckle member, and a maximum diameter dimension (D1) of the out-board side constant velocity universal joint (30) is set smaller than a minimum diameter dimension (Dn) of the knuckle member (6). Also, a maximum diameter dimension (D2) of an in-board side constant velocity universal joint (40) is set smaller than the minimum diameter dimension (Dn) of the knuckle member (6).

Abstract: The present invention resides in a wheel bearing unit (100) having an inner member (105) and an outer member (107) rotationally coupled to each other by at least one row of rolling elements (115), whereby at least one bearing inner ring (110) is mounted on the inner member (105). The inner member (105) comprises a first section (130) and a second section (135) that at least party lies radially inward of the first section (130). According to the invention, the first section (130) is formed from a first material and the second section (135) is formed from a metal material, preferably a lightweight metal such as aluminum.

Abstract: The assembly includes a pump bearing ring that is fitted with at least one bearing groove and is disposed in/on a bearing seat of a plastic coolant pump housing with an axial bearing collar, and several positioning webs which are located on the bearing seat. Separate adhesive grooves are placed between the positioning webs and the bearing collar. The adhesive grooves are provided with liquid-tight walls in four of the axial directions, an opening in the direction of the pump bearing ring, and slot-shaped adhesive pockets in the area of the outer edge of the pump bearing. A method for mounting a pump bearing in/on a plastic coolant pump housing includes steps of spreading adhesive on a bearing ring, pressing the bearing ring into/onto the bearing seat, and inductively heating the pump bearing in the plastic coolant pump housing.

Abstract: A bearing apparatus to be supported by an axle box which includes a key groove, the bearing apparatus includes an outer ring which includes a first key groove extending from an inner diameter to an outer diameter of an axial end surface of the outer ring, an inner ring, rolling elements rollably interposed between the outer and inner rings, and a key member which includes an annular body, a first inwardly projecting part which is provided on the annular body and adapted to be inserted into the first key groove of the outer ring, and an outwardly projecting part which is provided on an outer periphery of the annular body and adapted to be inserted into the key groove of the axle box.

Abstract: A pivot assembly bearing having a bearing inner ring, a shaft, a bearing outer ring, a housing, and an UV curable anaerobic adhesive fixing the bearing inner ring to the shaft, and the bearing outer ring to the housing, wherein the adhesive includes 15 to 25% of urethane acrylate, 45 to 55% of acrylic acid diester, less than 3% of acrylic acid monomer, 15 to 30% of hydroxyalkylmethacrylate, less than 3% of anaerobic catalyst, and less than 3% of photopolymerization initiating agent, and in addition, a coloring agent, if necessary. The pivot assembly bearing reduces outgas, shortens adhesive curing time, and no tack at the adhesive surface is obtained.

Abstract: The present invention is an anti rotational creep bearing including a socket designed in the inner race of the bearing for partially receiving an anti creep ball therein, further including a shaft onto which the bearing is to be longitudinally mounted, including a channel defined along a longitudinal direction for receiving there along the anti creep ball projecting from its socket, wherein the depth of the socket plus the depth of the channel is at least equal to the diameter of the anti creep ball, such that when the bearing is installed on the shaft, the anti creep ball prevents creep in the rotational direction, however allows movement in the axial direction.

Abstract: There is provided an assembling method of a bearing unit which has a bearing having an outer ring and a retainer plate having a retainer hole for holding the outer ring. The assembling method has pressing a plurality of portions in a circumferential direction of a circumferential edge of an inner circumferential portion of the retainer hole of the retainer plate in an axial direction so as to form engagement pawls and moving the engagement pawls of the retainer plate from one axial end of the outer ring to a engagement groove formed on an outer circumferential surface of the outer ring so as to engage the engagement pawls of the retainer plate with the engagement groove of outer ring.

Abstract: An air-conditioning compressor comprises a shaft rotationally assembled through a casing. A pulley is attached to the compressor by a roller bearing. A torque-transmitting member engages the pulley and the shaft together. Openings are formed between arms of an external torque transmitting part and a bore of an inner ring has a radius such to enable insertion of a crimping tool into the torque-transmitting subassembly to reshape local plastic features for assembly of the torque-transmitting subassembly. The local plastic deformations of the casing interfere with a transverse face of the inner ring, wherein the local plastic deformations are positioned in axial alignment with the empty spaces in at least one relative angular position between the torque-transmitting member and the inner ring.

Abstract: Under control of rotation of a crankshaft 41, a friction roller 32 is pressed against a friction roller 31 in a radial direction, so as to achieve torque transmission between the rollers 31, 32. An inter-roller radial pressing reaction is canceled as an internal force in bearing supports 23, 25, with no input to a housing 11. The reaction causes a radial displacement of a bearing-fitting portion provided with inner and outer bearings 21, 42 in double layer arrangement, wherein the radial displacement is larger than that of a bearing-fitting portion provided with a bearing 18, 19, 22 in single arrangement, so as to cause unbalanced contact between rollers 31, 32. In order to prevent this, support stiffness of bearing support 23 against the inter-friction-roller radial pressing reaction is set higher than that of bearing support 25.

Abstract: A bearing assembly comprises at least two adjacently-disposed bearings. Each bearing includes a bearing outer ring having a cylindrical outer circumferential surface. A bearing support retains the at least two bearings such that respective rotational axes of the at least two bearings extend in parallel. A spacer has at least two cylindrical openings configured to receive the respective cylindrical outer circumferential surfaces of the bearing outer rings such that a circumferential inner surface of each opening covers at least a portion of a width of the bearing outer ring received therein and surrounds an entire circumference of the bearing outer ring received therein. The bearing support is not fixedly connected to the spacer.

Abstract: Repairs of clocks with worn wheel pivots may be made with a ball bearing pivot wheel support system. The system may utilize a standard sized ball bearing and a bushing in frictional engagement with an inner race of the ball bearing. The bushing may be bored to provide frictional engagement with the pivot wheel so that the pivot wheel may rotate without relative motion between the wheel pivot and the bushing.

Abstract: A pivot assembly bearing having a bearing inner ring, a shaft, a bearing outer ring, a housing, and an UV curable anaerobic adhesive fixing the bearing inner ring to the shaft, and the bearing outer ring to the housing, wherein the adhesive includes 15 to 25% of urethane acrylate, 45 to 55% of acrylic acid diester, less than 3% of acrylic acid monomer, 15 to 30% of hydroxyalkylmethacrylate, less than 3% of anaerobic catalyst, and less than 3% of photopolymerization initiating agent, and in addition, a coloring agent, if necessary. The pivot assembly bearing reduces outgas, shortens adhesive curing time, and no tack at the adhesive surface is obtained.

Abstract: A bearing apparatus to be supported by an axle box which includes a key groove, the bearing apparatus includes an outer ring which includes a first key groove extending from an inner diameter to an outer diameter of an axial end surface of the outer ring, an inner ring, rolling elements rollably interposed between the outer and inner rings, and a key member which includes an annular body, a first inwardly projecting part which is provided on the annular body and adapted to be inserted into the first key groove of the outer ring, and an outwardly projecting part which is provided on an outer periphery of the annular body and adapted to be inserted into the key groove of the axle box.

Abstract: A disk drive includes a head for accessing a disk, a suspension for supporting the head, a carriage coupled to the suspension, a pivot-bearing assembly, an adhesive, and an adhesion inhibitor. The pivot-bearing assembly is housed in a hole of the carriage that is configured to rotate in such a way that the carriage is configured to oscillate. The adhesive is disposed between the pivot-bearing assembly and an inner circumferential surface of the hole for bonding the pivot-bearing assembly with the carriage. The adhesion inhibitor is disposed on the same surface as the adhesive for controlling a region of adhesion.

Abstract: A bearing assembly includes an inner race adapted to be coupled to an inner member and an outer race adapted to be coupled to an outer member positioned such that the inner race is in an opposed and spaced apart relation from the outer race. Roller elements are disposed between the inner and outer races. An inner flange is coupled to the outer race, includes circumferentially spaced apart recesses and extends generally radially toward the inner race. An outer flange is coupled to the inner race. A flexible sealing member contacts both the inner flange and the outer flange. A shroud includes tabs that extend through the recesses. The tabs are coupled to the outer race. The inner and outer members are permitted to rotate relative to each other.

Abstract: An outer ring is provided with a key groove radially extending from an inner diameter to an outer diameter on an end surface thereof. A key member includes an annular body, an inwardly projecting part which is provided on an inner periphery of the annular body and adapted to be inserted into the key groove of the outer ring, and an outwardly projecting part which is provided on an outer periphery of the annular body and adapted to be inserted into a key groove of an axle box.

Abstract: A bearing support journal for an internal shaft of a gas turbine engine including a device for retaining a sealing sleeve surrounding the shaft is disclosed. The retaining device includes a full radial annular flange formed upstream on an axial cylindrical part of the journal, the full flange being intended to butt axially against a radial annular flange of the sealing sleeve; and a tangential immobilizing device for immobilizing the sealing sleeve with respect to the journal, the tangential immobilizing device being created downstream on the axial cylindrical part of the journal.

Abstract: A bearing assembly has a bearing chamber, an inner mandrel having a first load bearing shoulder and an outer housing having an second load bearing shoulder. The first and second load bearing shoulders are opposed and are within the bearing chamber. Seals retain a bearing lubricant within the bearing chamber. A cylindrical stack of bearings are positioned between the first and second load bearing shoulders. Each row of bearings has an inner race supporting the first load bearing shoulder and an outer race supporting the second load bearing shoulder. The bearing assembly may be incorporated into a downhole tool. The downhole tool may continue to be operated after the seals fail by flowing a working fluid through the bearings.

Abstract: A bearing arrangement includes a bearing outer element that defines a first plurality of races opening radially inwardly, a bearing inner element that defines a second plurality of races opening radially outwardly, and a bearing middle element defining a third plurality of races at its radially outer surface thereof and a fourth plurality of races at its radially inner surface thereof. Rolling elements are receivable in the races. The bearing middle element includes an axial protrusion at least at one end thereof that can be received in a housing with respect to which the bearing outer and inner elements are rotatable.

Abstract: The invention provides a trunnion bearing assembly for the drive system of a snow blower, mower, tractor, or other self-propelled utility vehicle. In certain embodiments, the trunnion assembly comprises a bearing having ball bearings, roller bearings, or another type of bearing set. This can provide free relative rotation of several components of the bearing assembly relative to a trunnion housing of the bearing assembly. This rotation is imparted when a friction disk of the assembly engages a spinning motor flywheel of the drive system.

Abstract: A bicycle headset includes a lower cup, a bearing, a pressed ring, and an upper cup. The lower cup includes a first surface and a block extended on the first surface. The bearing is engaged in the lower cup. The pressed ring is rotatably engaged in the bearing. The upper cup is rotatably engaged with the lower cup and includes a second surface facing the first surface, and a channel extended in the second surface and having an arc shape. The channel includes first and second stop walls. The channel receives the block and includes the first and second stop walls selectively abutted against the block. The first and second stop walls are distanced from each other with an arc length. The arc length has an angle not greater than 180 degrees.

Abstract: A bearing structure includes a radial bearing for rotatably supporting an end of a rotary shaft while the rotary shaft receives a thrust load. The rotary shaft has an outer periphery. The bearing structure is characterized by comprising a rolling body supported in the radial direction of the rotary shaft within the bearing, a support portion for rotatably supporting the rolling body, an extended portion extending from the support portion toward the axial direction of the rotary shaft. The support portion is fit over an outer periphery of the rotary shaft. The extended portion is press-fitted over the outer periphery of the rotary shaft.

Abstract: A bearing lock is provided that improves upon existing methods of stabilizing a bearing in an electric motor. The bearing is fit between a rotatable shaft and a nonrotating annular support. The bearing has an inner race surrounding the rotatable shaft and has an outer race surrounded by the annular support. The bearing lock has an annular body with a midportion, an inner wall, and an outer wall. Both the inner wall and the outer wall extend generally in a first direction from the midportion and are spaced from one another to define an annular cavity therebetween. The outer wall has circumferentially-spaced integral tabs that extend at least partially toward the inner wall to provide a biasing force to lock the body to the annular support when the annular support is placed in the annular cavity.

Abstract: A housing (2) of a Roots pump (1) supports a drive shaft (3) and a driven shaft (4) with radial bearings (32, 33) so as to be rotatable. The housing (2) is formed by joining an upper housing member (20) to a lower housing member (10). The lower housing member (10) has lower bearing support portions (13), and the upper housing member (20) has upper bearing support portions (23). Opening edges (13a) of each lower bearing support portion (13) are positioned above the centers (P1) of the bearings (32, 33). An opening width (T1) of each lower bearing support portion (13) is smaller than the diameter (D1) of the bearings (32, 33). This structure suppresses the bearings (32, 33) from being separated from the lower housing member (10) during an assembling operation of the fluid machine.

Abstract: A device for centering a tube inside a hollow shaft is disclosed. The device includes a deformable device interposed between the tube and the hollow shaft and including bearing members for bearing against the inside surface of the shaft and suitable for being spaced away from the inside surface of the shaft in order to enable them to be moved inside the shaft. The deformable device is made of a shape-memory material suitable for deforming to press the bearing members against the inside surface of the shaft or to space them away therefrom on being subjected to a predetermined temperature.