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Pinion and annular gear
Rack and pinion animation

A pinion is a round gear used in several applications:

See also[edit]


  1. ^ Gear Nomenclature, Definition of Terms with Symbols. American Gear Manufacturers Association. p. 72. ISBN 1-55589-846-7. OCLC 65562739. ANSI/AGMA 1012-G05. 
  2. ^ Eric Perez. "Clutch Tuning". Retrieved 2010-01-29.