A mixing device (1) including a rotor (6) having pulverizing edges (7) and acting together with pulverizing edges (9) of a stator (8) is provided. The rotor (6) simultaneously executes a feeding effect in the axial direction using pump vanes, and the stator is externally closed in the radial direction. At least one rolling bearing is provided behind the rotor (6) in the feeding direction, the rolling elements (14) thereof inducing further pulverizing of the products processed in the mixing device (1). A further pump vane unit (15) behind the rolling bearing (12) in the feeding direction can preferably improve the flow of the medium, particularly through the rolling bearing (12), and transport the processed medium out of the device (1), preferably in the radial direction.