Worm drive

A worm drive is a gear arrangement in which a worm meshes with a worm wheel. Its main purpose is to translate the motion of two perpendicular axes or to translate circular motion to linear motion . The two elements are also called the worm screw and worm gear.

The terminology is often confused by imprecise use of the term worm gear to refer to the worm, the worm wheel, or the worm drive as a unit.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 2.0 fr

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