The steel can be used for high strength worm gears (worm wheel) and steel may be plain carbon steel or alloy steel. The steel gears are generally heat treated to be able to combine correctly the toughness and tooth hardness.
The phosphor bronze is widely used for worms drive so as to reduce wear of the worms which is excessive with cast iron or steel.
Worm gear models are usually used to lessen speed and enhance torque. Because the worm travel undergoes more contact stress cycles compared to the worm gear, the worm drive is usually of a more powerful material.
• Cast iron provides sturdiness and simple manufacture.
• Cast steel provides easier fabrication, strong working loads and vibration resistance.
• Carbon steels are economical and solid, but are susceptible to corrosion.
• Aluminum is utilized when low equipment inertia with some resiliency is required.
• Brass is inexpensive, easy to mold and corrosion resistant.
• Copper is easily shaped, conductive and corrosion resilient. The gear’s durability would maximize if bronzed.
• Plastic is economical, corrosion resistant, tranquil operationally and will overcome missing the teeth or misalignment. Plastic-type is much less robust than metallic and is susceptible to temperature improvements and chemical substance corrosion. Acetal, delrin, nylon, and polycarbonate plastics are normal.

This 27 tooth brass worm gear is intended to be used with a worm gear to produce a 27:1 decrease in speed while also changing the orientation of the rotating axis by 90 degrees. This equipment fastens to a 1/4″ shaft utilizing a specific 1/4″ D-hub to be utilized with 1/4″ D-shaft.

The manufacturing ways of worms are roughly divided among cutting, heat treated and ground after cutting and rolling. And for worm wheels, they can be roughly divided among cutting tooth, cutting tooth after casting, and tooth cutting after the outside rim is cast around the center of the blank.