[Tex/LaTex] Drawing a motor shaft in TikZ

Question

I'd like to create a picture like the one with TikZ:

I've already created the electrical part using circuitikz. I'd like to add the part on the right (the motor's shaft with arrows), but don't know how to start, actually. Is there a way to draw 3D shapes, maybe? Or should I draw circles and rotate them?

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{intersections}
\usepackage{circuitikz}
\usepackage{siunitx}

\begin{document}

\begin{figure}
\centering
\begin{circuitikz} \draw
(0,0) to [V, v=$v(t)$, *-*] (0,2) 
    to [R, l=$R_d$] (2,2)
    to [L, l=$L_d$] (4,2)
    to [V, v<=$e(t)$] (4,0) to [generic] (4,2) -- (4,0) -- (0,0);
\end{circuitikz}
\end{figure}

\end{document}

What I have now:

What I'm still missing:

Answer 1

This can be best done with cylinders but for the shading effects one can do some manual construction too.

\begin{tikzpicture}
\draw[fill=blue!50](0,0) circle (1 and 2);
\draw[top color=blue!25,bottom color=black,middle color=blue!50] (-0.5,2) arc (90:270:1 and 2) -- ++(0.5,0) arc (-90:-270:1 and 2) -- cycle;
\draw[top color=white,bottom color=black!70] (0,3mm) arc (90:270:1.5mm and 3mm)--++(3cm,0) arc (-90:-270:1.5mm and 3mm)-- cycle;
\draw (3cm,3mm) arc (90:-90:1.5mm and 3mm);
\end{tikzpicture}