PRESSURE SUPPLY UNIT FOR A BRAKE SYSTEM OF A VEHICLE

A pressure supply unit (10) for a brake system comprising a booster body (20) that defines an axially extending cylinder (22). A piston (16) is slideable within the cylinder (22). The piston (16) defines a bore (28) that receives a spindle (14). The spindle (14) is rotationally fixed and axially moveable for providing the axial movement of the piston (16). A motor (12) is positioned about the spindle (14) and is configured to axially translate the spindle (14) and piston (16). A ball and socket joint (42) connects the piston (16) and spindle (14) while accommodating pivoting movement of the spindle (14). The ball and socket joint (42) comprises a ball (102) at a front end of the spindle (14) and a socket (104) in the bore (28) of the piston (16) which receives the ball (102).