MASTER CYLINDER

摘要

The invention relates to a master cylinder intended for a hydraulically actuated friction clutch which is connected to a pedal via a piston rod (17) articulatedly supported in half-shells (14) surrounded by a piston rod sleeve (10) connected at the end away from the piston rod (17) to a piston (7) which can slide longitudinally in a guide sleeve (6) in the master cylinder (1) and thus defines a pressure chamber (8) at its face. According to the invention, the half-shells (14) fill an inner chamber of the piston rod sleeve (10) without clearance, while the half-shells (14) have a domed recess (15) in which a ball head (16) of the piston rod (17) is positively held and the piston rod sleeve (10) forms a unit with the radially stepped piston (7).