number of rolling elements for SKF 6220...

Go to skf site www.skf.com

There you can find all the relevant details

Got to products (top bar)

Then Left side bar select Rolling bearings -> Calculations.

In the pop-up box select bearing frequencies,

On the top select bearings

Bearing frequencies

Every care has been taken to ensure the accuracy of this calculation but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the calculation. Bearing Select bearing

select bearing number (6220) - there are a few variants there (5 of them 6220 2RS1 to 6220)

Then you have to feed the RPMs and it will give you all the values.

This facility is available in SKF as well as FAG-INA and I am regularly using it.