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IGW Gears

Worm gears

Worm gear sets consist of a worm gear (or wheel) and a worm. They are usually used when the ratio of the speed of the driving member to the speed of the driven member is large, and for a compact right-angle drive. They can provide a high level of mechanical indexing accuracy, as needed on for instance machine tools. But this also means they seldom operate at high efficiency levels.