Noun
English Wikipedia has an article on:crankpinWikipedia
crankpin (plural crankpins)
The pin that attaches a connecting rod to a crank
Fatigue strength The fatigue strength of crankshafts is usually increased by using a radius at the ends of each main and crankpin bearing. Source: Internet
However, in 1978 Chevrolet introduced a 90° 200/229 V6, which had a compromise 'semi-even firing' design using a crankpin that was offset by only 18°. Source: Internet
In the process, it powers a piston that transmits power directly through a connecting rod (US: main rod) and a crankpin (US: wristpin) on the driving wheel (US main driver) or to a crank on a driving axle. Source: Internet
Most V8 engines share a common crankpin between opposite cylinders in each bank, and a 90° V8 crankshaft has just four pins shared by eight cylinders, with two pistons per crankpin, allowing a cylinder to fire every 90° to achieve smooth operation. Source: Internet
Such a 'split' crankpin is weaker than a straight one, but modern metallurgical techniques can produce a crankshaft that is adequately strong. Source: Internet