What is meant by the radial load on a bearing?

Hi 3rrotec:

Thanks for the interesting question. 

The best, most concise, explanation I found for radial load on a
bearing is at:

Rolling Bearing Fundamentals
URL: http://www.maintenanceresources.com/ReferenceLibrary/Bearings/rbf.htm
Quote: 
"Depending on the internal design, rolling bearings may be classified
as radial bearings or thrust bearings. A radial bearing is designed
primarily for carrying a radial load. Radial load is a pressing force
at right angles to the shaft (Figure 4). Thrust load is a pushing
force against the bearing parallel to the shaft (Figure 5)."

Have a look at the accompanying graphics for this quote. 

Other valuable pages include:

How Bearings Work
http://www.howstuffworks.com/bearing2.htm

What is radial load ? 
http://www.parvalux.co.uk/questions_full.asp?id=20


I hope this helps!

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good answer, thanks! 3rrotec