Abstract: A spur gear includes a radially outer, spur-cut gear rim, a radially inner hub, and a rotationally symmetrical radial connecting structure which integrally connects the gear rim to the hub. The radial connecting structure has mutually spaced struts, which extend between the hub and the gear rim, and axial perforations or holes, which are situated between the struts. The radial connecting structure has a disk-shaped base body, through which the axial holes pass and which has an axial front side and an axial rear side, with the struts being situated on the front side.