Worm Wheel Gears are the perfect choice when the need is for producing large motor speed Gear reductions in a single step. A single reduction range of 5:1 - 100:1 is considered quite a normal thing for Worm Gears. It can climb up to 127:1 or even more, under special circumstances. Worm Wheel Gears are quite in operation. Using a single-lead worm along with a 100 tooth wheel can do wonders in a single simple step.
Worm gears are generally used when large gear reduction is needed. Wrapped around the central axle, the worms have one or more teeth in the form of screw threads that rotate the gears. These gears have a unique property, the worm can easily turn gears but gears cannot turn worm. The friction between the two holds the worm in place. This feature makes this gear fit for use in an industrial conveyor system and in some high-performance cars and trucks.