Hydraulische Betätigungsvorrichtung für eine Scheibenbremse

摘要

The invention relates to a hydraulic actuating device for a disc brake (1), comprising a brake cylinder (10) and a brake piston (9) placed therein which can be displaced axially. To ensure safe breaking, it is necessary to bleed such hydraulic brake systems, specially the hydraulic actuating device before operation. Enhanced bleeding is realized by providing at least one cast recess (19) in the transition area between the surface of the cylinder wall (17) and the surface of the cylinder base (18). Such a recess (19) is economical and easy to produce and produces better results during bleeding.