The cutting blade (20) has a drive motor with a disk-like base body (21) having cutting teeth (30,40) arranged on its periphery. Each cutting tooth has a side plate cutter running forward in a drive direction (13) and extending radially and a roof cutter that is extending in a peripheral direction (23). The side plate cutter and roof cutter are grounded by a formation of a cutting edge alternating from the one and another sides (31,41) of the cutting blade. Multiple cutting tips (36) of the cutting teeth lie in a common plane, where the cutting teeth are successive on the peripheral direction.
