spur gear

noun Machinery.
a gear having straight teeth cut on the rim parallel to the axis of rotation.
Also called spur wheel.


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World English Dictionary
spur gear or spur wheel
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
spur wheel or spur wheel

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The next two parts discuss the envelopes of spur gear cutters.
The spur gear became locked-up thus precluding movement.
New and more complete methods of power loss prediction as well as an optimum
  design of spur gear meshes are described.
Cornell's method for calculating the stiffness of spur gear teeth was extended
  and applied to helical gears.
Image for spur gear
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