an apparatus for performing successively performable actuations in a printing press includes a pressure converter having an actuator formed with actuator surfaces which are successively able to be acted upon stepwise by pressure fluid ; and a printing press in combination with the apparatus . successively performed actuations in a printing press include switching or controlling , coupling , adjusting and tensioning operations , wherein machine or press parts are moved and / or held in a given position . such actuations may be necessary in various devices of the printing press , a defined sequence of actuations having to be adhered to , depending upon the functions of the individual devices and to assure disruption - free cooperation of the devices . the actuations often require a transmission of comparatively strong forces to devices located at various places in the printing press which in terms of structural space are quite restricted . pneumatic and hydraulic systems are therefore used for these purposes .