The arrangement has a shaft arrangement comprising flexible, fast rotating shafts, which comprise a drive sided end and an output sided end. The shafts exhibit outer diameter that is invariable between the ends. The shaft exhibits different large rigidity and/or flexibility in two of different axial sections (5-7) of the shaft by an additional reinforcement body, where the axial sections are adhered as a single piece. The shafts exhibit a hollow space between a drive sided end and an output sided end. The reinforcement body is provided in form of cable core sections (3, 4).
