worms and worm gears provide a highly effective answer for power transmission applications requiring high-ratio rate reduction in a limited space using right angle (90°), nonintersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest form of gearing.
Because the effectiveness of a worm equipment drive depends upon the lead angle and amount of begins on the worm – and because increased effectiveness is always an objective, the ratio 
should be kept as low as possible. To run correctly, worms and worm gears utilized 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 worm & worm wheel Guaranteed Same Time Shipment System for the quickest delivery possible.