crank·​shaft ˈkraŋk-ˌshaft How to pronounce crankshaft (audio)
: a shaft driven by or driving a crank
: a shaft consisting of a series of cranks and crankpins to which the connecting rods of an engine are attached

Examples of crankshaft in a Sentence

Recent Examples on the Web But many of the most important engine parts are also built in-house, including camshafts and crankshafts that go straight from the foundry on site to CNC polishing machines running 24 hours a day, seven days a week with precision up to 1/10th of a millimeter. Michael Teo Van Runkle, Ars Technica, 11 Dec. 2023 If that’s somehow not impressive enough for you, the engine redlines at 8,500 rpm thanks to the use of a new 180-degree flat-plane crankshaft. Bryan Hood, Robb Report, 3 Jan. 2024 This model comprised a compression cylinder, an expanding cylinder and a crankshaft. Amy Brady, Discover Magazine, 2 Dec. 2023 All original components were rebuilt or upgraded, and a correct-spec 427 ci side-oiler engine was rebuilt for high-performance driving and touring, dyno-tested and delivering 460 brake horsepower at the crankshaft. Robert Ross, Robb Report, 18 Dec. 2023 To get rotational motion, levers and crankshafts are connected to the moving combs. IEEE Spectrum, 17 Nov. 2023 Twenty-two years into the Esprit's life, Lotus has finally fitted this cuneiform conundrum with an alloy powerplant of appropriate snootiness: four camshafts, 32 valves, eight cylinders, two Garrett T25 turbochargers, and a flat-plane crankshaft. John Phillips, Car and Driver, 8 Aug. 2023 Its new aluminum block extends well below the crankshaft centerline and uses six bolts (four from the bottom and one from each side) to retain each main-bearing cap. Csaba Csere, Car and Driver, 7 Sep. 2023 On a 4 stroke, the piston will travel from TDC to BDC four times to turn the crankshaft one time around during a combustion cycle. Matthew Every, Field & Stream, 16 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'crankshaft.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1854, in the meaning defined at sense 1

Time Traveler
The first known use of crankshaft was in 1854

Dictionary Entries Near crankshaft

Cite this Entry

“Crankshaft.” Dictionary, Merriam-Webster, Accessed 29 May. 2024.

Kids Definition


crank·​shaft -ˌshaft How to pronounce crankshaft (audio)
: a shaft turning or driven by a crank or made up of a series of cranks

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