Definitions for rack and pinion

This page provides all possible meanings and translations of the word rack and pinion

Random House Webster's College Dictionary

rack′ and pin′ion(n.)

  1. Category: Automotive, Machinery

    Ref: See under rack1 (def. 5a). 1 5 1

Princeton's WordNet

  1. rack and pinion(noun)

    a wheel gear (the pinion) meshes with a toothed rack; converts rotary to reciprocating motion (and vice versa)


  1. rack and pinion(Noun)

    A pair of gears, consisting of a circular pinion that engages with the teeth of a flat bar, that converts rotational into linear motion; used in the steering mechanism of cars, and in some railways


  1. Rack and pinion

    A rack and pinion is a type of linear actuator that comprises a pair of gears which convert rotational motion into linear motion. A circular gear called "the pinion" engages teeth on a linear "gear" bar called "the rack"; rotational motion applied to the pinion causes the rack to move, thereby translating the rotational motion of the pinion into the linear motion of the rack. For example, in a rack railway, the rotation of a pinion mounted on a locomotive or a railcar engages a rack between the rails and pulls a train along a steep slope, aka up.


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