The invention relates to a gear wheel (1) comprising at least one first gear rim (2) and a gear hub (3) comprising an axial gear hub channel (9) which is arranged in a concentric manner in relation to the rotational axis (8) of the gear wheel (1) and which comprises at least one opening (10, 11) and at least one first annular connecting wall (12, 32) which extends around the circumference and in the radial direction, said connecting wall interconnecting two sections (3, 6) of the gear wheel (1) which are arranged at a distance in the radial direction. According to the invention, the connecting wall (12, 32) is corrugated and/or indented with projections (13, 14, 15; 34, 35, 36) and recesses (16, 17, 18) which are arranged adjacent to each other around the circumference.