Worm gears are appropriate angle drives that offer big equipment ratios with fairly limited centre-to-centre distances from 1/4″ to 11″. When properly put in and lubricated, they serve as the quietest, smoothest-operating equipment variety. Since worm gear drives can achieve high equipment ratios, highest reduction can be accomplished in a smaller space than numerous other types of equipment drives. The worm and worm equipment operate at a 90° angle on non-intersecting axes.