The invention relates to a tensioning device (1) comprising an operating eccentric (4) and a regulating eccentric (12). The aim of the invention is to produce a position-oriented arrangement in the pre-mounted state of the tensioning device (1). To this end, an anti-twisting element (20d) is arranged between the operating eccentric (4) and the regulating eccentric (12) in a supply state of the tensioning device (1).
