Abstract: A constant-velocity rotary joint includes an outer joint portion with outer ball tracks, an inner joint portion with inner ball tracks, balls guided in a track pair formed by one outer ball track and one inner ball track, and a cage with windows to accommodate and retain the balls. Each outer ball track has an outer ball track center line. Each inner ball track has an inner ball track center line. When the constant-velocity rotary joint is straight, the inner ball track center line and the outer ball track center line of the track pair intersect in an intersection point and are not mirror-symmetrical with respect to a mirror plane through the intersection point, and the inner portion of the inner ball track center line widens more, with respect to a longitudinal axis of the outer joint portion, than the outer portion of the outer ball track center line.

Abstract: A constant velocity joint includes an outer joint portion with a first longitudinal axis, a first attaching end, an aperture end and outer ball tracks on an inner circumferential surface, an inner joint portion with a second longitudinal axis, a second attaching end, an inner face facing towards the outer joint portion and inner ball tracks on its outer circumferential surface, balls for torque transmission between the outer and inner joint portions, an annular ball cage between the outer and inner joint portions with several cage windows in which the balls are guided. The inner and outer joint portions are arranged so that one outer ball track and one inner ball track are in each case arranged opposite to each other to form three different types of track pairs to receive one respective balls. The balls have different controlling behaviors due to different track geometries.

Abstract: The present disclosure relates to a constant-velocity joint for torque-transmission, in which a first type of track pairs of ball tracks is configured in such a manner that the centers of curvature of the center lines of the ball tracks are situated in the joint center plane when the joint is straight. A second type of track pairs of ball tracks is configured in such a manner that their center lines have at least two portions. The respective center line of the outer ball tracks of the second type of track pairs has at least one inner portion and one outer portion, wherein the inner portion is situated on the connection side of the outer joint portion, while the outer portion is situated on the opening side of the outer joint portion, and the inner portion is curved.

Abstract: A constant-velocity rotary joint includes an outer joint portion with outer ball tracks, an inner joint portion with inner ball tracks, balls guided in a track pair formed by one outer ball track and one inner ball track, and a cage with windows to accommodate and retain the balls. Each outer ball track has an outer ball track center line. Each inner ball track has an inner ball track center line. When the constant-velocity rotary joint is straight, the inner ball track center line and the outer ball track center line of the track pair intersect in an intersection point and are not mirror-symmetrical with respect to a mirror plane through the intersection point, and the inner portion of the inner ball track center line widens more, with respect to a longitudinal axis of the outer joint portion, than the outer portion of the outer ball track center line.

Abstract: A constant velocity joint includes an outer joint portion with a first longitudinal axis, a first attaching end, an aperture end and outer ball tracks on an inner circumferential surface, an inner joint portion with a second longitudinal axis, a second attaching end, an inner face facing towards the outer joint portion and inner ball tracks on its outer circumferential surface, balls for torque transmission between the outer and inner joint portions, an annular ball cage between the outer and inner joint portions with several cage windows in which the balls are guided. The inner and outer joint portions are arranged so that one outer ball track and one inner ball track are in each case arranged opposite to each other to form three different types of track pairs to receive one respective balls. The balls have different controlling behaviors due to different track geometries.