Hub body (16) for a composite wheel (10), in particular a composite gear wheel (12), comprising an axis of rotation (14), a first front side of the hub (20), a second front side of the hub (22), an outer lateral surface (24) arranged along the axis of rotation (14) between the first front side of the hub (20) and the second front side of the hub (22),
wherein the outer lateral surface (24) has an engagement gearing (28) with at least one engagement tooth (30) as well as a convex outer lateral section (64),
as well as a composite wheel (10), in particular a composite gear wheel (12), with such a hub body (16),
as well as a steering unit for a motor vehicle with such a composite wheel.

An injection mold, processes for use thereof and products therefrom. The injection mold can include: a transfer mold, which is disposed in front of the injection-molded product and forms a pattern on a front surface of the injection-molded product; and a rear surface mold, which is disposed behind the injection-molded product. A rear surface part of the rear surface mold, which faces a rear surface of the injection-molded product, includes a heat dissipating metal. The heat dissipating metal includes a PORCERAX material. An embossing pattern is formed on a front surface part of the transfer mold, which faces the front surface of the injection-molded product, so that the pattern is formed on the front surface of the injection-molded product.