Our complete line of worms and worm gears could be ordered through the EP Gear Guaranteed Same Day Shipment Program for the fastest delivery possible.
Product Features
90°, non-intersecting shaft applications solution highly specialized power transmission needs.
Our worm gears offer the smoothest, quietest form of 
gearing.
They offer high-ratio speed reduction in minimal spaces.
Their efficiency is easily increased by reducing ratios.
With some ratios, there is resistance to back driving.
Obtainable from 48 DP to 3 DP
Stocked as single, double and quad start configurations
Because the efficiency of a worm equipment drive depends on the lead angle and quantity of begins on the worm – and because increased efficiency is always a goal, 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.
Worms & Worm Gears
EP Gear’s worms and worm gears provide an effective answer for power transmission applications requiring high-ratio velocity reduction in a limited space using right angle (90°), nonintersecting shafts. When properly used, worms and worm gears supply the smoothest, quietest type of gearing.
The primary benefit of worm gears is their ability to provide high reduction ratios and correspondingly high torque multiplication. They may also be utilized as acceleration reducers in low- to medium-swiftness applications. And, because their decrease ratio is based on the amount of gear teeth alone, they are more compact than other types of gears. Like fine-pitch lead screws, worm gears are typically self-locking, making them ideal for hoisting and lifting applications.
Although the sliding contact decreases efficiency, it provides very quiet operation. (The use of dissimilar metals for the worm and gear also contributes to quiet operation.) This makes worm gears suitable for use where sound should be minimized, such as in worm gear box assembly elevators. Furthermore, the use of a softer material for the gear means that it could absorb shock loads, like those experienced in heavy equipment or crushing machines.