Rack and Pinion
Rack has a series of teeth cut parallel to each other along a straight blank. A rack is engaged with a pinion both having equal tooth pitch. They are used to convert rotary motion to linear motion and vice versa. The rack is connected to a linear actuator whose motion drives the pinion resulting rotary motion as output which is available in the pinion shaft. When the pinion is driven by a motor the rack moves in a linear manner and the output linear motion is available in the rack.

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