Spring couplings can be used...
Spring couplings can be used universally for backlash-free transmission of rotary movements. Good compensation of all misalignment, highly vibration damping. Low torsional stiffness, low restoring forces, no moving parts. Very robust design, very economical.
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Resuming on linksCAD Files: Spring Coupling
material of hub: die-cast zincmaterial of spring: spring steel 1.06000 nickel plateddiameter: 12 – 26 mmØlenght: 25 – 50 mmbore holes: 3 – 12 mmØ