Disclosed is a working cylinder (1), which comprises a piston rod (16) that is guided by means of an annular piston rod bearing (26), which is arranged in a through-hole (7) of the housing (2) of the working cylinder (1), said through-hole being delimited radially on the outside by a boundary wall (12). The piston rod bearing (26) comprises a guide bush (27) surrounding the piston rod (16) in a sliding manner, wherein said guide bush is braced radially in a movable manner in relation to the boundary wall (12) by means of a rubber-elastic annular body (47) held in an outer annular groove (52). The guide bush (27) is additionally equipped, on its front axial end section (36), with an inner annular groove (35), in which a one-piece scraper and sealing ring (38) is held which surrounds the piston rod (16) with both a scraper lip (43) and a sealing lip (44). The piston rod bearing (26) has compact dimensions and can be easily manufactured and installed.