![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Crankshaftrendering.png/640px-Crankshaftrendering.png&w=640&q=50)
Crankpin
Crankshaft section where connecting rods are attached / From Wikipedia, the free encyclopedia
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A crankpin or crank pin, also known as a rod bearing journal,[1] is a mechanical device in an engine which connects the crankshaft to the connecting rod for each cylinder. It has a cylindrical surface, to allow the crankpin to rotate relative to the "big end" of the connecting rod.[2][3][4]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Crankshaftrendering.png/640px-Crankshaftrendering.png)
Crankpins highlighted in blue
The most common configuration is for a crankpin to serve one cylinder. However, many V engines have each crankpin shared by each pair of cylinders.