摘要:
The invention relates to a rotary shaft (23) for processing foodstuffs, wherein the rotary shaft (23) has a rotation axis and the rotary shaft comprises at least one tool (11). The at least one tool (11) extends along the rotation axis. The tool (11) further has an airfoil profile such that the tool comprises a leading edge, a trailing edge, an upper surface and a lower surface, wherein the leading edge and the trailing edge are different.