The steel is used for high strength worm gears (worm wheel) and steel could be plain carbon steel or alloy steel. The metal gears are often heat treated so as to combine correctly the toughness and tooth hardness.
The phosphor bronze is trusted for worms drive to be able to reduce wear of the worms which will be excessive with cast iron or steel.
Worm gear sets are usually used to lessen speed and boost torque. Since the worm drive undergoes more contact tension cycles than the worm gear, the worm travel is generally of a more robust material.
• Cast iron provides toughness and simple manufacture.
• Cast steel provides less difficult fabrication, strong functioning loads and vibration level of resistance.
• Carbon steels are inexpensive and solid, but are vunerable to corrosion.
• Aluminum can be used when low equipment inertia with some resiliency is required.
• Brass is inexpensive, simple to mold and corrosion tolerant.
• Copper is easily designed, conductive and corrosion resistant. The gear’s power would increase if bronzed.
• Plastic is inexpensive, corrosion resistant, silent operationally and can overcome missing pearly whites or misalignment. Plastic-type is fewer robust than metallic and is susceptible to temperature alterations and chemical corrosion. Acetal, delrin, nylon, and polycarbonate plastics are normal.

This 27 tooth brass worm gear will be used with a worm gear to make 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 using a specialised 1/4″ D-hub to be utilized with 1/4″ D-shaft.

The manufacturing methods of worms are roughly divided among cutting, heat treated and ground after cutting and rolling. And for worm wheels, they might be approximately divided among cutting the teeth, cutting pearly whites after casting, and the teeth cutting after the exterior rim is usually cast around the guts of the blank.