\begin{eqnarray}
M_{max1} &=& 46Nm\\
T_1 &=& 14.6\\
M_{v1} &=& \sqrt{M_{max}^2+0.75\cdot T^2}\\
M_{v1} &=& 48Nm\\
M_{max2} &=& 46Nm\\
M_{v2} &=& 160Nm\\
d &=& \sqrt[3]{\left(\frac{32 \cdot M_{v1}}{\pi\cdot \sigma}\right)}\\
\nonumber &=& 19mm
\end{eqnarray}