Worm gearing is a class of gear reducers that utilizes right angle, non-intersecting shafts. This style of reducer provides smooth and quiet operation and allows for the possibility of large speed reductions. These gears are available from stock in a wide variety of ratios, from as low as 4:1 to as much as 3600:1. The compact design and construction allows worm gear reducers to be placed in a relatively small space. Thus, very high reductions in a limited package size can be achieved with this configuration. The continuous sliding tooth action between worm and the teeth of the worm gear increases the tolerance for heavy loads and shock loads. Worm gear drives offer users high reducing capacity for relatively low cost when compared to some other types of gearing.
The use of worm gearing extends across many industries including food, beverage and grain and has many applications. Some applications that utilize worm gearing are: conveyors, mixers and bucket elevators.