Rack and Pinion

A mating gear pair. The rack is a flat, straight bar (track) with teeth to engage (mate) with the gear teeth of the pinion gear, in order to move in a straight-line orientation. Typically the gear teeth are parallel, however for a helical rack the teeth are angled. The pinion is the smaller gear of the two. 

See also Helical Gear

Was this content useful to you?