Lubrication is an essential factor to improve efficiency in worm gearing.Worm gear action generates considerable heat,
decreasing efficiency. The amount of power transmitted at a given temperature increases as the efficiency of the gearing
increases. Proper lubrication enhances efficiency by reducing friction and heat.
Material recommended for worms is hardened steel and bronze for worm gears. However, depending on the application
unhardened steel worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. In
addition to steel and hardened steel, worms are available in stainless, aluminum, bronze and nylon; worm gears are available in
steel, hardened steel, stainless, aluminum, nylon and non-metallic (phenolic).