Patent ID: 8556053

Claim:
A twin-clutch for a twin-clutch variable speed transmission in motor vehicles, comprising: two wet running multi-disk-clutches which are arranged axially in succession in a transmission housing, wherein end walls of the transmission housing are provided on respective sides of the multi disk clutches; a driving clutch housing; two transmission hubs outputting to transmission input shafts, and alternately drivingly connectable with the clutch housing via clutch disks; ring pistons shiftably supported in the end walls of the transmission housing and hydraulically pressurizeable with pressure oil via ducts arranged in the end walls to thereby cause a shifting of the ring pistons, said ring pistons alternately acting on the clutch disks via pressure disks, said pressure disks being actuatable by the ring pistons from outside the clutch housing and; axial rolling bearings respectively arranged between the ring pistons and the pressure disks.