Compared to other types of gears, worm gears are unique and have very distinctive characteristics and uses. This post will focus on the advantages of worm gears. For a list of common worm gear applications, please see worm gear capabilities.
A worm gear system consists of a worm and worm wheel. The worm resembles a screw, which meets with a worm wheel, as shown in the photo. When rotational power is applied to the worm, it rotates against the wheel and transfers power to the worm wheel. The system is designed so that the worm can easily turn the gear, but the gear cannot turn the worm. In some designs, the friction between the gear and worm holds the worm in place. This feature can be very useful in some applications.
Worm gears are the most compact type of system and provide high-ratio speed reduction. They are often the preferred type of gearing system when space is limited and large gear reductions are needed. Worm gears can be used to either greatly increase torque or greatly reduce speed. They are also the smoothest and quietest of the gear systems, as long as they are properly mounted and lubricated.
Another advantage of worm gears is that they have good meshing effectiveness. To be most effective, it is important that they are manufactured with high quality standards to ensure all gear requirements are precisely met.
Precision Worm Gears from Gear Motions
Gear Motions has a long history of manufacturing worm gears. Our worm gears are custom made with precision, so our customers can rely on us to produce high quality gears made to their exact specifications. Whether you need high or low volume, large or small size worm gears, we can accommodate a wide variety of requirements. Contact us with questions or to get a quote.