Combine harvester and threshing drum for a threshing device of a combine harvester

A self-propelled combine harvester comprising:

• a threshing device, wherein the threshing device includes a front drum, a threshing drum downstream from the front drum in a direction of flow of harvested material, and a threshing concave at least partly surrounding both the front drum and the threshing drum;
• and
• an axial separating device, wherein the separating device, viewed in a direction of flow of harvested material, is immediately downstream from the threshing device and comprises two axial separating rotors;
• wherein the threshing drum comprises:
• a cylindrical drum body configured to be rotatably driven about a center axis;
• a plurality of beater bars that are positioned on an outer circumferential surface of the cylindrical drum body, wherein the plurality of beater bars each have a beating edge oriented parallel to the center axis of the cylindrical drum body, wherein one or more of the plurality of beater bars project in a radial direction with respect to the center axis of the cylindrical drum body in a direction away from the center axis beyond the outer circumferential surface of the cylindrical drum body and define a circumferential circle around the center axis at a radially outer beating edge on which a respective beating edge rotates in a beating radius about the center axis during an operation of the threshing drum;
• and
• a cutting ring positioned centrally on the outer circumferential surface of the cylindrical drum body when viewed in a longitudinal direction of the cylindrical drum body and configured to rotate in a circumferential direction of the cylindrical drum body, wherein the cutting ring has at least one radially outer cutting edge moving around in the circumferential direction of the drum body, wherein the at least one radially outer cutting edge extends in a cutting plane positioned perpendicular to the center axis of the drum body and defines a circumferential circle, wherein a cutting radius of which, measured with respect to the center axis, is larger than beating radii of the beating edges of the plurality of beater bars.