Abstract: In a series of shafts for attachment in a bore of a receiving part, the series includes at least two different sizes, which each include different variants of shafts. The shaft has, in each instance, at least five axial regions A, B, C, D, and F, which are contiguous in the alphabetical order of the letters denoting them, and of which F has a greater outer diameter than A, B, and/or C. Included within a size are several variants of shafts, which each have different tooth constructions in region F of the shaft. Region C of the shaft is toothed or knurled. Within a first size, and at least in a first variant, the shaft does not have gear teeth in region A. In at least a second variant within the first size, the base zones of the grooves formed by the slots of the gear teeth of region F also extend at least partially into region B and/or A of the shaft.

Abstract: A clamping mechanism for securing a hollow shaft on a solid shaft, the hollow shaft having, at at least one of its ends, an inner cone for receiving an adaptor bushing that has a corresponding outer cone and rests on the solid shaft; and the adapter bushing having an axial longitudinal slot; and a contraction disk, including at least one pressure ring, exerting a contraction force on the hollow shaft with the aid of the at least one pressure ring; and the pressure ring having an axial longitudinal slot.