worms and worm gears provide a highly effective answer for power tranny applications requiring high-ratio swiftness reduction in a restricted space using right position (90°), non-intersecting shafts. When properly applied, worms and worm gears provide the smoothest, quietest type of gearing.
Because the effectiveness of a worm equipment drive depends on the lead angle and amount of starts on the worm – and because increased efficiency is always a goal, the ratio 
worm & worm wheel should be kept only possible. To run properly, worms and worm gears utilized together must have the same diametral pitch and threads.
Our complete type of worms and worm gears could be ordered through the Boston Gear Guaranteed Same Day time Shipment Plan for the fastest delivery possible.