Patent ID: 7001281

Claim:
A constant velocity ball joint in the form of a counter track joint, comprising: an outer joint part with outer tracks, an inner joint part with inner tracks, torque transmitting balls which are received in pairs of tracks comprising said outer tracks and inner tracks which are curved outwardly with reference to a longitudinal joint axis, and a ball cage with cage windows in which the balls are held in a common plane and are guided on to an angle-bisecting plane when the joint is articulated; first outer tracks, together with first inner tracks, form first pairs of tracks whose first control angles (β 1 ) open in a first axial direction (R 1 ) and in which first balls are held; and second outer tracks, together with second inner tracks, form second pairs of tracks whose second control angles (β 2 ) open in a second axial direction (R 2 ) and in which second balls are held; wherein the control angles (β 1 , β 2 ) are defined as angles between tangents at ball contact points in the tracks pairs; and wherein the outer joint part and the inner joint part are axially displaceable relative to one another and the first control angles (β 1 ) and the second control angles (β 2 ) change in opposite senses when a relative axial displacement occurs, the axial displacement path (V max ) being limited to a maximum value that changes the control angles (β 1 , β 2 ) so as to be not less than 8° for the smaller of the respective control angles (β 1 , β 2 ), wherein an inner face of the outer joint part is cylindrical, and wherein the axial displacement path is delimited in each direction by a circumferential face in the outer joint part stopping against a spherical outer face of the ball cage.