Patent ID: 7993233

Claim:
A friction coupling assembly comprising: an actuator in the form of a ball ramp assembly with two discs which are arranged coaxially relative to one another, of which one is axially supported and the other one is axially displaceable, wherein the two discs, on their end faces facing one another, each comprise a plurality of ball grooves which, in opposed circumferential directions, comprise an increasing depth, wherein in pairs of opposed ball grooves there are received balls via which the two discs are axially supported; a plate package arranged coaxially relative to the discs and having outer plates to be connected in a rotationally fixed way to a coupling carrier and inner plates to be connected in a rotationally fixed way to a coupling hub which is rotatable relative to the coupling carrier, wherein the outer plates and the inner plates are arranged so as to alternate in the axial direction; wherein the axially supported disc is rotatingly drivable around an axis of rotation by an electric motor, and wherein the axially displaceable disc is held in a rotationally fixed way relative to the coupling carrier; a ball bearing for axially supporting the rotatingly drivable disc relative to a supporting face, wherein a first bearing race of the ball bearing is integrally formed with the rotatingly drivable disc.