worms and worm gears provide an effective answer for power tranny applications requiring high-ratio velocity 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 gear drive depends on the business lead angle and number of begins on the worm - and because increased effectiveness is always an objective, the ratio should 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 type of worms and worm gears can be ordered through the Boston Gear worm & worm wheel Guaranteed Same Day Shipment Plan for the fastest delivery possible.