Fatigue life cycle analysis

Xaspire88

I'm looking to see if anyone has some good resources for calculating the life (in cycles) of a pin that is used to affix a spur gear to a shaft much like the example of the dowel pin seen on this page:

http://www.hpceurope.com/gb/technica...HPC.php?item=F

Any help is greatly appreciated as I'd like to know what I should expect to see while performing the testing of a new gearbox.