Solution
To achieve the desired smoothness of operation, a retraction system
TR.RS.60.RC.B (R = fixed end on the right C = cover, B = B version of the TRE chain) with the high-traction and easy to fill
TRE.60.087.0.B was chosen. The radius stability of the TRE.B version is even 4 times higher compared to the TRC (closed version).
The rotary movement of axis 2 was performed by a twisterchain.