Gear Housing:-Manufacture as per din standard in sizes from 31mm centers to 254mm centers.Gearbox is manufacture in ratio from 5:1 to 70:1 in horizontal and vertical type. Worm and Worm wheel: - worms are manufacture from alloy steel duly hardened and profile ground. Worm wheel with hub of graded cast iron and phosphorous bronze centrifugal cast ring duly welded and hobbed.