The device (2) has cutting rotors (6) distributed over a working width of a main portion of the device. Each rotor includes a driving device and a cutting device with a rotating blade and a fixed counter blade. The cutting device is arranged on external periphery drive teeth of the driver device to define receiving pockets for receiving and transportation of harvested crops. Outer cladding circles of the rotating and counter blades in a conveying direction in a cutting zone of the cutting rotors have an identical spacing from a rotational axis of the rotor.
