That part of the crankshaft, which is in the form of a crank and crank pin.

The purpose of the crank is to convert reciprocating motion into rotary motion.


That part of the crank to which the connecting rod is attached.

See also: Connecting Rod, Crank Angle, Crankshaft, Internal Combustion Engine.

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Subjects: Engines

Weblinks: Animations of mechanisms and paper models. This section of the website is aimed at introducing pupils to mechanisms and how they work.