worms and worm gears provide an effective solution for power transmission applications requiring high-ratio speed worm & worm wheel reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms 
and worm gears supply the smoothest, quietest kind of gearing.
Because the performance of a worm gear drive depends upon the business lead angle and number of starts on the worm – and because increased effectiveness is always an objective, the ratio ought to be kept only possible. To run correctly, worms and worm gears used together will need to have the same diametral pitch and threads.
Our complete line of worms and worm gears can be ordered through the Boston Equipment Guaranteed Same Time Shipment Program for the quickest delivery possible.