A ball cage for universal use both in a cross-groove type plunging constant velocity joint and in a cross-groove type fixed constant velocity joint has an external contour with sections of different curvature. Axial edge sections of the external contour are designed as spherical sections located on the circumference of an imaginary sphere, whereas a center section of the external contour located axially between the edge sections runs radially inside the diameter of the imaginary sphere.

A joint assembly for connecting a first rotating part and a second rotating part. The joint assembly includes a constant velocity joint that has an inner race for being connected to the first rotating part and an outer race that is pivotable relative to the outer race. A mating flange couples the outer race to the second rotating part. The outer race and the mating flange each have a radially inner surface. A piloting cover is positioned axially between the outer race and the mating flange and radially supports the radially inner surface of the outer race at a first pilot point, and radially supports the radially inner surface of the mating flange at a second pilot point for centering the outer race relative to the mating flange. The first and second pilot points are located radially inwardly of a bolt circle diameter.

A boot comprising a central axis and an inner surface and an outer surface. The boot having a first fastening region the inner surface of which is adapted to seal against a first component and a second fastening region the inner surface of which is adapted to seal against a second component. The boot having an interior volume between the first fastening region and the second fastening region. The boot having an intermediate region connected at a first end to the first fastening region and connected at a second end to the second fastening region. The intermediate region having a convolution located between the first end and second end, wherein the outer surface of the convolution is convex.

In a fixed type constant velocity universal joint according to the present invention, six torque transmitting ball tracks (20) are defined as a first track, a second track, a third track, a fourth track, a fifth track, and a sixth track along a circumferential direction. Further, in the fixed type constant velocity universal joint according to the present invention, an axial offset amount of a curvature center of each of track grooves (12) of an outer joint member (13) and an axial offset amount of a curvature center of each of track grooves (15) of an inner joint member (16) are set to 0. Further, in the fixed type constant velocity universal joint according to the present invention, the track grooves (12) of the outer joint member (13) and the track grooves (15) of the inner joint member (16) are each inclined with respect to an axis line.

A constant velocity universal joint includes an outer joint member and a joint internal component received in the outer joint member. A shaft is fitted into an inner joint member. The outer joint member has a cup bottom formed on a side opposite to a shaft-fitting side. The cup bottom is configured to regulate movement of the joint internal component toward the side opposite to the shaft-fitting side in a normal state in which an impact generated in an abnormal state is not applied. The cup bottom has a cut portion which is to be cut by the impact generated in the abnormal state involving movement of the joint internal component toward the side opposite to the shaft-fitting side.

A constant velocity universal joint includes an outer joint member and a joint internal component received in the outer joint member. A shaft is fitted into an inner joint member. The outer joint member has a cup bottom formed on a side opposite to a shaft-fitting side. The cup bottom is configured to regulate movement of the joint internal component toward the side opposite to the shaft-fitting side in a normal state in which an impact generated in an abnormal state is not applied. The cup bottom has a cut portion which is to be cut by the impact generated in the abnormal state involving movement of the joint internal component toward the side opposite to the shaft-fitting side.

Constant-velocity slip ball joint at least having an outer joint part with an axis of rotation and with outer ball tracks, having an inner joint part with inner ball tracks, having a plurality of torque-transmitting balls, each guided in associated outer and inner ball tracks, and having a cage, which is provided with a plurality of cage windows, which accommodate in each case one or more of the balls; wherein the inner joint part can be displaced in relation to the outer joint part by a displacement distance along the axis of rotation; wherein at least a part of the outer ball tracks and at least a part of the inner ball tracks are at a track-helix angle in relation to the axis of rotation; wherein a floor of each ball track, along the displacement path is spaced apart from the axis of rotation by a respectively constant spacing along a radial direction; wherein a maximum angle of deflection of the inner joint part in relation to the outer joint part is predetermined by an outer contact surface of the cage establishing contact with a first contact surface of the outer joint part and/or by an inner contact surface of the cage establishing contact with a second contact surface of the inner joint part; wherein the cage has a center axis and the inner contact surface is conical; wherein the inner contact surface is at an opening angle of more than 0 degrees in relation to the center axis of the cage.

Constant-velocity slip ball joint at least having an outer joint part with an axis of rotation and with outer ball tracks, having an inner joint part with inner ball tracks, having a plurality of torque-transmitting balls, each guided in associated outer and inner ball tracks, and having a cage, which is provided with a plurality of cage windows, which accommodate in each case one or more of the balls; wherein the inner joint part can be displaced in relation to the outer joint part by a displacement distance along the axis of rotation; wherein at least a part of the outer ball tracks and at least a part of the inner ball tracks are at a track-helix angle in relation to the axis of rotation; wherein a floor of each ball track, along the displacement path is spaced apart from the axis of rotation by a respectively constant spacing along a radial direction; wherein a maximum angle of deflection of the inner joint part in relation to the outer joint part is predetermined by an outer contact surface of the cage establishing contact with a first contact surface of the outer joint part and/or by an inner contact surface of the cage establishing contact with a second contact surface of the inner joint part; wherein the cage has a center axis and the inner contact surface is conical; wherein the inner contact surface is at an opening angle of more than 0 degrees in relation to the center axis of the cage.

A method for manufacturing a rolling bearing unit is provided to periodically reciprocate a stage (38) in a vertical direction by rotating and driving a servo motor (44) while rotating a roll about a central axis of a hub main body using a roll driving motor (43) in a state in which a processing surface of the roll is pressed against other end surface of a caulking section in an axial direction. A period of the reciprocation is restricted by a relation between a rotation position of the roll about the central axis of the hub main body and an engaged state between concave sections, which are sections between a plurality of processed teeth formed in the processing surface of the roll, and a face spline tooth formed by the concave section.

A sealing assembly having a first metal seal ring including a first lateral face defining a first seal surface and a second metal seal ring including a second lateral face defining a second seal surface that is configured to form a face-to-face seal with the first seal surface. The first lateral face includes a laterally-facing groove positioned radially outward of the first seal surface. An annular debris barrier is configured to be received within the groove.