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spur gear

noun

, Machinery.
  1. a gear having straight teeth cut on the rim parallel to the axis of rotation.


spur gear

noun

  1. a gear having involuted teeth either straight or helically cut on a cylindrical surface. Two such gears are used to transmit power between parallel shafts
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of spur gear1

First recorded in 1815–25

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spurgespur gearing