This newly developed sports equipment allows all the arm muscles to be trained for stamina, power and mobility. Turning the shaft makes a traction mechanism lift the weight set beforehand. The rotation motion is therefore translated, which requires three bearing points. In total, 38 igus® bearings of various shapes and sizes are successfully in use and have proved themselves in all the test and trial phases, as well as in continuous use under max. load, thanks to low friction and noise levels.