A single pinion drives the axis (the "grasp") when the 2nd pinion is "preloaded" to eliminate the backlash (the "slave"). The preload is established electronically which has a Distinctive motor controller; these devices can even be create to travel with each other in the course of cycle moments when backlash https://gearboxcvt35789.thenerdsblog.com/38406289/rumored-buzz-on-gearbox-cvt