Abstract: A fixed type constant velocity universal joint is capable of, without involving decreases in load capacity of an inner joint member (inner member) and in spherical area, increasing rigidity of a cage and stabilizing durability. The cage has four pockets including a pair of long pockets with large circumferential intervals and a pair of short pockets with small circumferential intervals. The pair of long pockets can be shifted by 180 degrees along a circumferential direction, and the pair of short pockets can be shifted by 180 degrees along the circumferential direction. The long pockets and the short pockets are arranged alternately to each other along the circumferential direction. Two balls are accommodated in each of the long pockets, while one ball is accommodated in each of the short pockets. A cutout portion is provided to an inner end portion of at least one of the track grooves of the inner member.

Abstract: A homokinetic rotary ball joint in the form of a plunging joint is described.

Abstract: A method for fixing a boot includes mounting a tubular anchoring areas, defined in opposite ends of a resinous boot, on an outer periphery of a counterpart member, and applying a clamping force to boot bands mounted around respective outer peripheries of the tubular anchoring areas to thereby fix the tubular anchoring areas to the outer periphery of the counterpart member. Coils are disposed around respective outer peripheries of the boot bands to generate an induction current in the boot bands. In this way, a reactive force of the magnetic field is generated between the coils and the boot bands to plastically deform the boot bands and reduce their diameters, whereby the tubular anchoring areas are fixed to the outer periphery of the counterpart member.

Abstract: In a constant velocity universal joint component and a manufacturing method thereof capable of achieving increased strength without significant procedural changes, and that can contribute to size reduction and weight reduction, a sharp-angled portion 15 is formed by machining after cold plastic working is applied. A carburization process is then performed in which surface carbon concentration of 0.45 mass % to less than 0.60 mass % is obtained. Quenching is then performed. High-frequency induction hardening is subsequently performed.

Abstract: A fixed type constant velocity universal joint is capable of securing a ball groove depth larger than conventional products and enhancing performance without an increase in a “force of pushing out balls in an axial direction”, the force having an influence on joint efficiency. In the fixed type constant velocity universal joint, a center of each of a plurality of guide grooves of an outer joint member and a center of each of a plurality of guide grooves of an inner joint member are offset with respect to a spherical surface center of an inner surface and a spherical surface center of an outer surface. A ratio (F/PCR) of an offset amount F to a length of a segment (PCR) ranges from 0.045 to 0.065. A ratio (?t/?) when an angle ? is the total of an angle ?t and an angle ?c ranges from 0.45 to 0.65.

Abstract: A connection system for a grease cover of a constant velocity joint includes a groove portion formed in a generally annular portion of the constant velocity joint. The generally annular portion is defined, at least in part, by an inner surface. The system also includes an insertion tool a grease cover selectively positioned at least partially within the groove portion. The grease cover includes an outer edge portion.

Abstract: A ball joint having an inner hub which has an inner hub axis and an outer surface, in which inner races and cage guide surfaces are arranged in the inner hub; an outer hub which has an outer hub axis and an inner surface, in which outer races and cage guide surfaces are arranged in the outer hub, and a cage which is ring-shaped and has a cage axis. The inner surface of the cage extends in the direction of the cage axis, the outer surface of the cage extends away from the direction of the cage axis, an inner race is constructed to extend straight and/or parallel to the inner hub axis, and an outer race is constructed to extend straight and/or parallel to the outer hub axis.

Abstract: A shaft member includes a plurality of shaft splines and a shaft preloading portion. The assembly also includes a collar member adjustably coupled to the shaftmember and having a collar member groove and a preloading portion formed therein; a first member having a first member groove and a plurality of first member splines formed therein; and a retaining member selectively at least partially interposed within both the collar member groove and the first member groove for restraining axial movement between the shaft member and the collar member. At least a portion of the first member groove and at least a portion of the collar member groove are selectively aligned when the shaft member is at least partially interposed within the first member to permit the retaining member to be at least partially positioned within both the first member groove and the collar member groove.

Abstract: A system for connecting a shaft (5) to a joint (1), which system includes a shaft journal (10) that is connected to the shaft (5), and a sleeve (4) that is connected to a hub of the joint (1), the sleeve (4) having a shaft-side first opening section (7), a joint-side second opening section (8), and a first radial stop section (14), and the shaft journal (10) having a shaft-side first shaft-journal section (11), a joint-side second shaft-journal section (12), and a second radial stop section (15) for delimiting the insertion path of the shaft journal (10) in the sleeve (4).

Abstract: A constant velocity (CV) joint assembly comprising a CV joint and an input member is disclosed. The CV joint that has a cage and a gear between which rotational drive can be transmitted. The input member is connected to the cage of the CV joint for transmission of rotational drive about an axis from an external component to the CV joint. The rotational drive is transmitted between the cage and the input member through interacting drive faces that are disposed in a plane that is generally parallel to the axis. The cage and the input member are retained in interconnection by fastening means that are not responsible for transmission of rotational drive between the cage and the input member. By separating the task of transmission of torque and retention of the connection between the cage and the input member, the fastening means required to perform the latter task can be comparatively light.

Abstract: A constant velocity joint is disclosed that includes a first rotatable shaft comprising an axle portion having on one end an enlarged pocket end, the pocket end having a plurality of circumferentially and radially spaced ball pockets; a corresponding plurality of spherical balls disposed in the pockets; and a second rotatable shaft comprising a joint housing, the joint housing having a central bore with a corresponding plurality of axially extending, circumferentially and radially spaced ball grooves disposed about the second longitudinal axis and a base, the joint housing disposed over the pocket end with the corresponding plurality of balls disposed in the grooves, the joint providing a range of angular and axial movement of the first shaft relative to the second shaft, each of the plurality of ball pockets comprising a portion of the pocket having a conformity ratio C greater than about 1.04.

Abstract: A universal joint composed of a swivel member, a driven socket, and at least one mediator. The swivel member includes a swivel body and a first driving portion. The driven socket includes a concavity, a second driving portion, and an annular recess formed at the concavity. A retaining ring is mounted in the annular recess. The swivel body is received in the concavity. The swivel body includes at least one cavity formed on a surface thereof. The driven socket includes at least one recession, which can correspond to the at least one cavity when the swivel body is located in the concavity. The at least one mediator interacts with the recession and the cavity and is located between the swivel body and the driven socket. Therefore, the operation of the universal joint can be smooth.

Abstract: A constant velocity joint is disclosed that includes a first rotatable shaft, the first shaft comprising an axle portion having on one end an enlarged pocket portion, the pocket portion having a plurality of circumferentially and radially spaced ball pockets and a distal end; a corresponding plurality of spherical balls disposed in the pockets; and a second rotatable shaft comprising a joint housing, the joint housing having a central bore with a corresponding plurality of axially extending, circumferentially and radially spaced ball grooves disposed about the second longitudinal axis and a base, the joint housing disposed over the pocket portion with the corresponding plurality of balls disposed in the grooves, the joint providing a range of angular and axial movement of the first shaft relative to the second shaft, the distal end of the pocket portion having a convex surface configured to provide a predetermined a range of angular movement.

Abstract: A constant velocity universal joint has high strength and capable of suppressing deformation caused by quenching at an opening end portion of a track groove of an outer joint member. In an undercut-free constant velocity universal joint in which a track groove in a cup portion of the outer joint member has a hardened layer formed by induction quenching, an opening end surface is protruded by a protruding amount t in an axial direction from a groove bottom of the track groove in a relief surface. The protruding amount t satisfies a relation of t=0.037d to 0.185d when a diameter of a torque transmission ball is represented by d. The opening end surface in a protruded portion and an outer surface of the cup portion continuous to the opening end surface have an unhardened layer free from hardening by quenching.

Abstract: An articulated joint includes a first rotational member and a second rotational member coupled with and positioned generally coaxial to the first rotational member. The joint also includes a boot. The boot is selectively deformable in response to an increase in pressure in a joint chamber to increase the volume of the joint chamber. The volume of the joint chamber is selectively changed due to, at least in part, relative movement of the boot end to the second rotational member.

Abstract: A joint arrangement in the manner of a counter track joint, wherein a cage is provided which is arranged between a joint outer part and joint inner part, which has a cage outer sphere with an outer sphere centripetal point and a cage inner sphere with an inner sphere center point and which has a plurality of cage windows which each hold at least one ball, wherein at least the outer sphere center point and the inner sphere center point of the cage are arranged offset with respect to the joint center plane.

Abstract: A multi-part longitudinal drive shaft of a motor vehicle consists of two shaft sections that are each formed by a shaft tube connected with each other by a homokinetic displacement joint. The outer diameter of the shaft tube in the second shaft section is smaller than the inner diameter of the shaft tube of the first section. The outer joint ring of the homokinetic displacement joint is firmly connected with the shaft tube of the first shaft section and a ball hub of the joint is connected with the second shaft section. When a specific axial position is exceeded, the homokinetic displacement joint can be broken down. The individual parts of the two shaft sections can be displaced into one another, after break-down of the homokinetic displacement joint, so that the second shaft section is displaced in the direction of the first shaft section.

Abstract: A vent valve for a constant velocity joint is disclosed. The vent valve may generally include a body disposed in a bore of the cover which is axially movable in the bore and allows fluid flow through the bore, a first umbrella portion associated with a side of the body which defines a first gap between a first surface of the cover and the first umbrella portion, and a second umbrella portion associated with an opposite side of the body which defines a second gap between a second surface of the cover and the second umbrella portion.

Abstract: In a shock absorbing propeller shaft apparatus for a motor vehicle, a stop ring is fitted to an annular groove provided in an outer periphery of an inner shaft end close to a base end with respect to a portion to which an inner race of a constant velocity joint in the inner shaft end is fitted, a collar main body of a collar is inserted to an outer periphery between a portion to which the inner race of the constant velocity joint in the inner shaft end is fitted and a portion to which the stop ring is fitted, in the outer periphery of the inner shaft end, and a flange portion protruding out in an axial direction from an outer diameter side of one end of the collar main body is attached to cover an outer periphery of the stop ring.

Abstract: A boot-mounting structure for a constant velocity universal joint has a configuration which can prevent a crack caused by interference with a boot band while maintaining a stable sealing property. The boot band (69) is fitted into a fitting groove of a silicone boot (65), and is decreased in diameter while being attached into the fitting groove, to thereby fix the silicone boot (65). The boot band (69) is formed into an annular body not provided with a folded-back portion. There is provided a no-interference structure means (S) for preventing interference caused, when the boot band is decreased in diameter, between an axial outer-peripheral-edge portion (69a or 69b) of the band (69) and a bottom end portion (82a or 82b) of the fitting groove (75) corresponding thereto.

Abstract: A longitudinal shaft assembly for a motor vehicle, comprising at least a first shaft and a second shaft, a ball-type constant velocity joint for connecting the first shaft to the second shaft and at least one central bearing for supporting the longitudinal shaft assembly with respect to a body of the motor vehicle.

Abstract: A fixed constant velocity universal joint includes an outer race having a spherical inner circumferential surface, the outer race including axially extending ball grooves formed in the spherical inner circumferential surface at regular circumferential intervals, and an inner race having a spherical outer circumferential surface, the inner race including axially extending ball grooves formed in the spherical outer circumferential surface at regular circumferential intervals. Balls are interposed between pairs of the ball grooves of the outer race and the ball grooves of the inner race. A cage has pockets for receiving the balls, the pockets being formed at predetermined circumferential intervals. The outer race is produced by hot forging or lathe-turning and subjected to thermal refining treatment.

Abstract: In a constant velocity joint comprising an outer housing ring having an end wall with a journal and an inner surface provided with axially extending ball races and an inner ring member with outer ball races arranged in the outer housing ring and balls disposed in the ball races for the transmission of torque between the outer housing ring and the inner ring member, and a ball cage for retaining the balls in position in the ball races, a support ring is arranged in the housing ring between the end wall of the housing ring and the inner ring member for axially supporting the inner ring member during insertion of a shaft end into the inner ring member of the constant velocity joint.

Abstract: A fixed-type constant velocity universal joint can sufficiently interpose a lubricant between a torque transmitting ball and a guide groove, and reduce frictional force. The fixed-type constant velocity universal joint of the present invention includes an outer joint member 1 that is filled with a lubricant and on which a guide groove 1b that extends in an axial direction is formed on a spherical inner circumferential surface 1a, an inner joint member 2 provided on an inner diameter side of the outer joint member 1 and on which a guide groove 2b that extends in the axial direction is formed on a spherical outer circumferential surface 2a, a torque transmitting ball 3 interposed between opposing guide grooves 1b and 2b of the outer joint member 1 and the inner joint member 2 such as to roll freely, and a cage 4 that holds each ball 3. Numerous miniscule recesses are randomly formed on a surface of the ball 3.

Abstract: A sealing cover assembly for an articulating joint. The articulating joint includes a first rotational member and a second rotational member. The sealing cover assembly includes a first portion having a plurality of fastening portions. The fastening portions are coupled to the second rotational member for rotation therewith. The sealing cover assembly also includes a second portion adapted for connecting to the driveline and a plurality of damping members constructed of at least a first material and interconnecting the first portion to the second portion.

Abstract: A sealing assembly includes a sealing element and its placement in homokinetic joints. This sealing element seals the outer joint part relative to a pipe or a hollow shaft. The sealing element is connected with the outer joint part which is connected with a sealing rolled bellows on the opposite side. In this case, the sealing element is configured as a closure lid provided with a pressed projection, and a set back piece on its outer circumference. This lid includes a cylindrical or turned over shape, and is disposed on the outer joint part of the homokinetic joint by way of the pressed projection and by secondary weld seams of a friction weld or magnetic arc weld that connects the outer joint part with a pipe. This connection is with a shape fit or a force fit whereby the closure lid in the set back partial piece is configured with a circumferential groove as well as with planned breakage points.

Abstract: An object of the present invention is to ensure the miniaturization, strength, durability, load-carrying capacity, and an operating angle of a constant velocity universal joint. Six balls 3 are disposed in the constant velocity universal joint. The ratio r1 (=PCDBALL/DBALL) between the pitch circle diameter PCDBALL (PCDBALL=2×PCR) of the ball 3 and the diameter DBALL thereof is set in a range of 1.5?r1?4.0. The ratio r2 (=DOUTER/PCDSERR) between the outside diameter DOUTER of an outer member 1 and the pitch circle diameter PCDSERR of serrations (or splines) 2d of an inner joint member 2 is set in a range of 3.0?r2?5.0.

Abstract: A constant velocity joint assembly includes an outer joint member and an inner joint member. A first shaft is coupled to the inner joint member for articulated movement with the inner joint member relative to the outer joint member. A boot is coupled to the first shaft and the outer joint member to seal the constant velocity joint assembly. An insert is secured to and supported within the boot adjacent to and in abutting engagement with an axial end of the outer joint member. The insert limits movement of the first shaft to within a pre-determined range of articulation to prevent disengagement and/or disassembly of the inner joint member relative to the outer joint member.

Abstract: In a fixed type constant velocity universal joint, a center of each of guide grooves of an outer joint member is offset to a position of being spaced apart from a joint central plane to a joint opening side by an axial distance, and is spaced apart from a joint central axis line to an opposite side in a radial direction with respect to each of the guide grooves by a radial distance. Further, a center of each of guide grooves of an inner joint member is offset to a position of being spaced apart from the joint central plane to a joint innermost side by the axial distance, and is spaced apart from the joint central axis line to the opposite side in the radial direction with respect to each of the guide grooves by the radial distance.

Abstract: A fixed type constant velocity universal joint includes an outer joint member having an inner spherical surface in which a plurality of track grooves extending in an axial direction are formed; an inner joint member having an outer spherical surface in which a plurality of track grooves extending in the axial direction while paired with the track grooves of the outer joint member are formed. A plurality of balls are interposed between the track grooves of each of the outer joint member and the inner joint member, for transmitting a torque, and a cage is interposed between the inner spherical surface of the outer joint member and the outer spherical surface of the inner joint member, for holding the balls.

Abstract: A drive joint, particularly a fixed joint in the form of a counter-track joint, for establishing a connection between two components in the drive train of a motor vehicle. The joint is provided with joint parts such as an inner hub, an outer hub and a ball cage containing torque-transmitting balls as additional joint parts. The outer hub of the drive joint can be destroyed in the case of an accident. The invention also relates to a drive shaft comprising such a drive joint.

Abstract: Internal dimensions for fixed-type constant velocity universal joints are defined to optimize the geometry of the components of the joints and to readily achieve a larger operating angle of the joints. In the joint, the track grooves of an outer ring and an inner ring are tapered by an angle not exceeding 12°. The ratio (f/PCR) of the cage offset amount f to PCR is greater than 0 and smaller than or equal to 0.12. The ratio (Do/d) of the cage outer diameter (Do) to the ball diameter (d), the ratio (t/d) of the cage wall thickness (t) to the ball diameter (d), and the ratio (w/d) of the cage width (w) to the ball diameter (d) are such that 3.9?Do/d?4.1, 0.31?t/d?0.34, and 1.8?w/d?2.0, respectively. The end of the spherical outer surface of the cage adjacent to the open end is axially extended, and the end of the spherical inner surface of the cage adjacent to the open end is tapered so that the tapered surface has an increasing diameter toward the end of the spherical outer surface adjacent to the open end.

Abstract: An inner joint component and a shaft of a constant velocity universal joint are connected in a configuration it difficult for backlash to occur. An axis hole inner diameter of an inner member of the constant velocity universal joint is unhardened, and a spline serving as a recess and projection section running along a circumferential direction is formed on an axial end outer diameter of the shaft. A hardened layer n is formed on the axial end outer diameter of the shaft. The shaft and the inner member are joined by an axial end of the shaft being pressed into the axis hole inner diameter of the inner member to incuse a shape of said recess and projection section onto the axis hole inner diameter of the inner member 20.

Abstract: A universal joint which retains a lubricant, is capable of suppressing the exudation of a lubricating component to a minimum amount and preventing the lubricant from scattering from an open portion when the lubricant is deformed by an external force, and a method for producing the universal joint. In the universal joint, a rotational torque is transmitted by engagement between a torque transmission member (6) and tracks (4, 5) provided on an outer member (2) and an inner member (3); the torque transmission member (6) rolls along the tracks (4, 5), thus moving in an axial direction; and a porous solid lubricant (10) is enclosed on a periphery of the torque transmission member (6). The porous solid lubricant (10) containing a lubricating component and a resin component is a solid made porous by foaming and hardening the resin component.

Abstract: A jointed shaft with two shaft sections which are connected together in a rotationally fixed manner via a central shaft which is constructed as a constant velocity fixed joint. A constant velocity fixed joint is also arranged on the end of each of the shaft sections which is oriented away from the central joint. At least one roller displacement unit, which enables both shaft sections to be displaced in an axial manner in relation to each other, is also provided.

Abstract: A support structure for bolting components of a drive shaft via a mounting member that comprises at least are mounting member of the drive shaft having formed through a bolt hole, a female thread portion which is formed in the mounting member, the bolt having a male thread portion can be screwed into the female thread portion by inserting the bolt into the bolt hole, and a heat-shrinkable tube that is adapted to provide elastic contact at an inner surface of the bolt hole.

Abstract: A constant velocity joint for a drive system comprises: an outer race having a plurality of guide grooves formed in an axial direction in the inner spherical surface of the outer race; an inner race having a plurality of guide grooves formed in an axial direction in the outer spherical surface of the inner race, said guide grooves of the outer race and the inner race together forming a plurality of ball guide tracks; a plurality of balls disposed in the ball guide tracks; and a cage installed between the inner spherical surface of the outer race and the outer spherical surface of the inner race, said cage having a plurality of windows for retaining the balls therein.

Abstract: An opposed path joint including an inner hub, which is provided with first and second inner grooves, and an outer hub, which is provided with first outer grooves and second outer grooves that respectively form a pair with the first and second inner grooves. The opposed path joint also includes a ring-shaped cage, which is placed between the inner hub and the outer hub and which has radial openings whose number corresponds to that of the groove pairs. Balls that engage inside the grooves are guided inside these radial openings. The outer hub of the opposed path joint has at least two elements that are located one behind the other on the outer hub axis and jointly center the cage.

Abstract: A boot assembly for an articulating joint is provided, including an inner layer and an outermost layer. The inner layer is constructed from a first material and the outermost layer is constructed from a second material that is different from the first material. The outermost layer at least partially covers the inner layer, and the second material includes a self-repairing polymer.

Abstract: A fixed type constant velocity joint includes: an outer race having an inner spherical surface, and a plurality of guide grooves formed in the inner spherical surface of the outer race; an inner race having an outer spherical surface, and a plurality of guide grooves formed in the outer spherical surface of the inner race, said guide grooves of the outer race and said guide grooves of the inner race together forming a plurality of ball guide tracks; a plurality of balls disposed in the ball guide tracks; and a cage having a plurality of windows for retaining the balls therein. The ball guide tracks include first tracks and second tracks with different groove configurations and having dual, multiple, or differentiated center offsets with smaller offsets applied to the tracks having relatively large ball movements and larger offsets applied to the tracks having relatively small ball movements as the joint is articulated for assembling.

Abstract: Unpleasant vibration and muffled sound are restrained. A constant velocity universal joint includes an outer joint part having a plurality of track grooves formed on its cylindrical inner circumferential surface and extending in an axial direction, an inner joint part having a plurality of track grooves formed on its spherical outer circumferential surface and extending in the axial direction, six torque transmitting balls, each being put in a ball track formed by a pair of the track groove of the outer joint part and the track groove of the inner joint part, and a cage having pockets for retaining the torque transmitting balls. The center of curvatures of the spherical outer circumferential surface and the center of the spherical inner circumferential surface of the cage are offset by the same distance in the opposite directions along the axis about the center of the joint.

Abstract: A light and compact slide-type constant velocity universal joint has a maximum operating angle of 30° or more through optimization of a ball contact angle relative to ball grooves, a ball contact ratio, and a cage offset amount. In the slide-type constant velocity universal joint, a ratio of ball diameter to outer ring outer diameter is 0.21 to 0.25, a ratio of ball pitch diameter to outer ring outer diameter is 0.64 to 0.68, a contact angle of the ball groove is 30° to 35°, a contact ratio of the ball groove is 1.02 to 1.08, and a ratio of cage offset amount to ball pitch diameter is 0.07 to 0.09.

Abstract: A power transmission shaft mitigates the concentration of both tensile stress and shear stress to achieve an improvement in terms of fatigue strength. A male spline section is formed on an outer periphery of the power transmission shaft. On a valley section of the male spline section, at an axially opposite end side portion thereof, there is provided a diameter-expanded section whose outer diameter dimension is gradually increased toward an axially opposite end. Rounded sections having a circular arc cross-section are provided on both circumferential sides of the diameter-expanded section. A radius of curvature of the rounded sections is gradually increased toward the axially opposite end.

Abstract: Constant-velocity fixed joints may comprise an outer joint part with outer ball tracks, an inner joint part with inner ball tracks, torque transmitting balls which are guided in pairs of tracks each formed of an outer and an inner ball track, and a ball cage with circumferentially distributed cage windows in which the balls are received. Here, the balls are held in a common central plane and are guided onto the bisecting plane when the joint is deflected. Constant-velocity rotary joints of this type are known as Rzeppa fixed joints (RF) or as undercut-free fixed joints (UF).

Abstract: A connecting arrangement between a shaft journal, which is mounted so as to be axially fixed with respect to a unit, and a joint part which can be pivotably attached to the shaft journal in a rotationally fixed manner. A shaft nut having an internal thread which can be screwed onto an external thread of the shaft journal, is provided with an additional external thread onto which a further nut can be screwed. The further nut includes first and second thread sections with different pitch directions which produce an axially acting interlocking connection between the further nut, the shaft nut and the joint part.

Abstract: A boot for constant-velocity universal joint comprises a major-diameter cylindrical portion 2, a minor-diameter cylindrical portion 3 being separated away from and being put in place concentrically with the major-diameter cylinder portion 2, and having a smaller diameter than that of the major-diameter cylindrical portion 2, and an intermediate portion 10 connecting the major-diameter cylindrical portion 2 with the minor-diameter cylindrical portion 3. The intermediate portion 10 comprises a stretchable bellows portion 19 being connected with the minor-diameter cylindrical portion 3 integrally, and a rigidity-producing portion 11 being connected with the bellows portion 19 and the major-diameter cylindrical portion 2 integrally. The rigidity-producing portion 11 enlarges diametrically from the bellows portion 19 toward the major-diameter cylindrical portion 2, and additionally at least an outer peripheral surface 101 of the rigidity-producing portion 11 has a plurality of shoulders 61 in a stepwise manner.

Abstract: A cross-track plunging constant velocity joint assembly includes an inner race having an outer diameter, an axial length, inner ball tracks, and a spline engageable with a first torque transfer member. An outer race has an inner diameter, an outer diameter, and outer ball tracks. The outer race is connectable to a second torque transfer member. A cage having multiple windows is disposed between the inner and outer races. A plurality of balls (N) having a ball diameter are held by the cage within the windows and engage pairs of the inner and outer ball tracks. The balls define a joint pitch circle diameter (PCD). The inner race has a plunge depth within the outer race. The ratio of 1.2?(outer race outer diameter/outer race inner diameter)?1.7 is satisfied.

Abstract: A connecting assembly for use in the propeller shaft of a motor vehicle is disclosed. The connecting assembly comprises a shaft journal with an annular groove; a constant velocity universal joint with an inner joint part which is connected in a rotationally fixed way to the shaft journal for the purpose of transmitting torque; an axial securing ring for the inner joint part, which axial securing ring is positioned in the annular groove of the shaft journal; and a holding ring which is releasably connected to the inner joint part; wherein, in a mounted condition of the inner joint part, the axial securing ring is axially fixed on the shaft journal between a contact face of the inner joint part and the holding ring connected to the inner joint part.

Abstract: Automatic installation of a circlip is facilitated even when an axial length (inner race width) of a protrusion of an inner race is reduced. An inner race is installed in a constant velocity universal joint for transmitting torque while allowing angular displacement between itself and an outer race, with a shaft being inserted in a shaft hole formed in an inner bore to be spline-fitted thereto so as to be prevented from coming off by virtue of the circlip. A two-step chamfer having different chamfer angles is provided at a shaft insertion side end portion of the shaft hole. The two-step chamfer includes a first chamfer section situated on a shaft hole opening side and a second chamfer section provided on the side opposite to the shaft hole opening so as to be continuous with the first chamfer section. The chamfer angle ? of the first chamfer section is set larger than the chamfer angle ? of the second chamfer section.

Abstract: A fixed constant velocity universal joint with eight balls achieves improvement in cage strength by increasing a smallest outer diameter of a cage and improvement in joint strength at a high operating angle by ensuring required inner spherical area and spherical surface angle in an outer member regardless of the smallest outer diameter of the cage. In the fixed constant velocity joint of the present invention, among eight frontal sections adjacent to an inner spherical surface on an outer member opening side, present between adjacent ball grooves formed on the inner spherical surface, and forming a smallest inner diameter of an outer member opening, any one or any two mutually opposing frontal sections are retracted from the smallest inner diameter in an outward radius direction by a distance required to allow insertion of the cage through the one or two frontal sections (cylindrical surfaces or planar surfaces) in a state in which a cage axial line is perpendicular to an outer member axial line.