The worm gear is composed of a worm and a worm wheel. It is the simultaneous height offset of vertical energy transfer. Typically, the travel factor is a worm. In buy to mix the wheel/worm into a worm gear, it is needed to guarantee that the middle distance is equal and the transmission ratio is equal. Heart distances are accessible from inventory in little methods in between 17mm and 80mm. Each and every centre length has numerous gear ratios. The excessive stress worm gear is suited for the generation of worm equipment drives with a shaft angle of 90°. Using a worm drive, really large reduction ratios (up to a hundred:1) can be attained.