Combined service and spring brake cylinder and brake device for utility vehicles

The cylinder (1) has an electromechanically actuated brake actuator (2) with which a brake lining can be pressed onto a brake body that is to be braked. The spring storage brake cylinder (9) and the electrically actuated brake actuator have mutually coaxial brake rods (7,8) with which the brake lining can be pressed against the brake body. Independent claims are also included for the following: a braking device for a commercial vehicle with two mutually independent working brake circuits.