The most common type of CVT takes advantage of two pulleys connected by a belt or chain; having said that, quite a few other patterns have also been utilized sometimes. Extruder helical gearboxes are used in extruders where maximum torsional stiffness is needed and for very low-sound purposes. Extrusion gearboxes https://gearbox94691.blogrelation.com/39865514/gearbox-options