Differential assembly and actuator assembly for friction disk clutch

An actuator assembly for operating a friction disc clutch in the driveline of a motor vehicle, comprising:

• a housing part with a sleeve-shaped portion and a flange-shaped portion;
• a ball ramp mechanism with a support ring, which is axially supported against the housing part, and a setting ring, which is axially movable, wherein at least the support ring is radially spaced from an outer face of the sleeve-shaped portion of the housing part,
• an actuating element which is axially movably held coaxially to the ball ramp mechanism on the flange-shaped portion of the housing part, wherein an annular gap is formed between an outer face of the sleeve-shaped portion and the actuating element, with the actuating element on one side being axially supported at least indirectly against the setting ring and having on an opposite side an actuating face for acting on the friction disc clutch, and
• a spring element which is arranged radially externally of the actuating face of the actuating element axially between the housing part and the actuating element in order to exert a resilient restoring force on the actuating element which is opposed to the actuating force of the ball ramp mechanism.