correct bearing and life calculatoin solidworks

have you ever doing a project and wonder what kind of bearing you need to select is it gonna work or not does it have good life or reliability well if you do then you will happy to know in solidworks you can do all these things
solidworks has a inbuilt function to do
so in this i am going to talk how to calculate bearing life
how to select right bearing
what is the revolution / min required to achieve a particular life
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