SPRING BRAKE ACTUATOR COMPRISING A MECHANICAL RELEASE MECHANISM WITH A RELEASE BOLT AND A SPRING ELEMENT

The spring brake actuator (1) comprises a housing (2) with a housing base (4) and a first housing cover (6) and a mechanical release mechanism with a release bolt (34), a running nut (44) and a compressible spring element (50), wherein in the housing (2) a compression spring (14), a dividing wall (10) and a spring brake piston (28) are arranged. The compressible spring element (50) is trapped between the running nut (44) and the spring brake piston (28) and is a part being manufactured from a non-metallic material or at least partly from a non-metallic material, in particular from a plastic material.