The generate factor is a worm. In order to merge the wheel/worm into a worm gear, it need to be ensured that the centre length is equivalent and the transmission ratio is equivalent. Center distances are offered from inventory in little steps amongst 17mm and 80mm. Each and every middle distance has several gear ratios. Ep worm gears are suited for the production of worm drives with a shaft angle of 90°. Employing a worm generate, really large reduction ratios (up to a hundred:1) can be attained.