A device for mowing, comprising a rotatable shaft (6) and a plurality of supporting structures (7) arranged along the shaft (6), each of which structures supports a plurality of circumferentially arranged and radially extending blades (8), each of which blades exhibits a radially extending blade edge (9) which extends to the free blade end (10) and which, on rotation of the aforementioned shaft (6), are arranged for mowing. Each blade edge (9) is angled in relation to a blade plane extending perpendicularly in relation to the aforementioned shaft (6) at an angle (a) of less than 45°, and the free blade ends (10) of the blades (8) in each of the aforementioned supporting structures (7) are distributed between at least three blade positions (KP) that are mutually separated in the axial direction.