The push element is a worm. In purchase to mix the wheel/worm into a worm equipment, it should be ensured that the heart length is equal and the transmission ratio is equal. Heart distances are offered from inventory in little steps in between 17mm and 80mm. Each centre length has several equipment ratios. Ep worm gears are ideal for the generation of worm drives with a shaft angle of 90°. Making use of a worm generate, quite massive reduction ratios (up to 100:1) can be accomplished.