I have a JET cabinet saw that also had a "slight roar" I noticed it more when powering down the saw and the blade was spinning to a stop. After doing some research here on the Creek with the same issue I was all set to replace the bearings because that always fixed the problem.
I called JET to ask about replacing the bearings and they advised me to check the set screw that holds the pulleys to the arbor shaft. Turns out that was all wrong with it. I tightened the set screw and backed it up with another one.
I guess when others were replacing the bearings they had to remove the pulleys too. When they put everything back together they tightened the set screw fixing it, not the new bearings fixed it as they thought.
I would give this a check before going to the trouble of replacing the bearings. Quick and easy to do. Just make sure to unplug the saw first.
Last edited by Dave Lehnert; 02-19-2015 at 11:24 PM.
"Remember back in the day, when things were made by hand, and people took pride in their work?"
- Rick Dale