The invention relates to an inserting device (34) and a method for inserting a circular blank ring (30) into an outer ring (29). For this purpose, an outer ring (29) is first transported to an insertion point (E) in the supply device (34). At the same time, a circular blank ring (30) is brought to a starting position (P) in the supply device. The circular blank ring (29) is first aligned coaxially to an axis (A) via a centering body (61) which is arranged coaxially to the axis (A). The circular blank ring moves solely radially to the axis (A). The circular blank ring (30) is then inserted into the hole of the outer ring (29) by means of a tappet (45). During the movement of the circular blank ring (30) from the starting position (P) into the outer ring (29), the circular blank ring is aligned coaxially to the axis (A) by means of a centering means and preferably by means of a centering channel (54). The circular blank ring (30) carries out a superimposed movement in the axial direction (V) and in the radial direction radially to the axis (A).