spur gear

American

noun

Machinery.

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

spur gear British

noun

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

Etymology

Origin of spur gear

First recorded in 1815–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

spur gear

The motion of the drum is transmitted by spur, gear, or otherwise as may be required, to give the requisite speed.

From Scientific American Supplement, No. 455, September 20, 1884 by Various

The boiler was of cast-iron, with a one-cylinder engine, spur gear and a fly-wheel on one side.

From Lectures on Popular and Scientific Subjects by Earl of Caithness John Sutherland Sinclair

The magnetos are very accessibly located on a bracket on the spur gear cover.

From Aviation Engines Design?Construction?Operation and Repair by Victor Wilfred Pag?

Now a spur gear, as well as a pinion, has three diameters; one measurep.

From Practical Mechanics for Boys by James Slough Zerbe

The flange and web have an average thickness of 4 mm. or 5⁄32′′ and the web is drilled full of holes interposed between the spur gear mounted on the cam-shaft and the cam-shaft gear.

From Aviation Engines Design?Construction?Operation and Repair by Victor Wilfred Pag?

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023