worms and worm gears provide an effective solution for power transmitting applications requiring high-ratio velocity worm & worm wheel reduction in a restricted space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears supply the smoothest, quietest 
type of gearing.
Because the effectiveness of a worm gear drive depends upon the business lead angle and amount of begins on the worm – and because increased efficiency is always a goal, the ratio should be kept as low as possible. To run correctly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete line of worms and worm gears could be ordered through the Boston Gear Guaranteed Same Day Shipment System for the fastest delivery possible.