The invention relates to an eccentric gear comprising an imbalance compensation element (10a 10e) and an eccentric element (12a 12e) for translating the rotational movement of an armature shaft (14a 14e) into an oscillating rotational movement of a drive shaft (16a 16e), for the purpose of driving the insertion tool (40a 40e) of a hand-held machine tool (18a 18e) in an oscillating manner. According to the invention, the imbalance compensation element (10a 10e) is embodied as a single piece with another functional unit (12a 12d, 14e).