Another mechanical question...

How much should the support roller below the belttensioner spin? If I try to spin the roller, it just stays as far as my finger moves it. The other belt support roller on the drivers side continues to spin. My question I suppose is, does the roller have some bearings in it that are going out? Thanks.

 

It is going out replace it before it cost you a belt,
and strands you when it locks up.

 

Also consider replacing both of your idler pulleys, they are also known to fail and are usually replace at the same time.