Eccentric gearing (10) for displacing two parts positioned in a manner that enables them to move relative to one another. The eccentric gearing includes a gearing housing (12), an eccentric element (20), which is driven by a rotary drive (28) and on which an eccentric gear (30) is rotationally mounted, and it includes an output element (40), which interacts with the eccentric gear (30) by meshing therewith in sections. The eccentric gear (30) is actively connected to a coupling element (54) placed inside a recess (67) of a fastening flange (60) that enables the eccentric gearing (10) to be fixed on one of the two parts (8, 9).