worms and worm gears provide an effective answer for power tranny applications requiring high-ratio rate reduction in a limited space using right position (90°), nonintersecting shafts. When properly used, worms and worm gears provide the smoothest, quietest type of gearing.
Because the effectiveness of a worm gear drive depends upon the lead angle and quantity of starts on the worm – and because increased efficiency is always an objective, the ratio ought to be kept only possible. To run properly, worms and worm gears used together must have the same diametral pitch and worm & worm wheel threads.
Our complete line of worms and worm gears can be ordered through the Boston Equipment Guaranteed Same Time Shipment Plan for the quickest delivery 
possible.