Worm gears are used when large equipment reductions are needed. It’s quite common for worm gears to possess reductions of 20:1, and also up to 300:1 or greater.

Many worm gears have a fascinating property that no Rotary Vane Vacuum Pump additional gear arranged has: the worm can simply turn the gear, but the gear cannot turn the worm. That is because the angle on the worm is so shallow that when the apparatus tries to spin it, the friction between your gear and the worm keeps the worm set up.

This feature pays to for machines such as for example conveyor systems, in which the locking feature can become a brake for the conveyor when the motor isn’t turning. One other very interesting utilization of worm gears is in the Torsen differential, which is used on some high-performance cars and trucks.