My Jet cabinet saw was been unusually noisy lately. It has been making a loud fast knocking noise.
It became especially clear to me when i visited my Dad over thanksgiving an I noticed how much quieter his Delta contractor saw was.
Simple diagnostics yeilded nothing so I knew that I had to go about it the hard way... pull of the tables and wings and top.
With the belts off the arbor, turning it by hand I hear some some mild abrasive white noise thoughout the rotation, and a specific clunk at the same point in the rotation at each turn. I'm confident that this is the "knocking" that I head under power.
Here's the rub.... I just replaced the bearings about 6 months ago. Since the saw was only about 6 years old (just past warantee) I talked Jet into sending me a new set gratis.
I suppose it's possible that I got a bad bearing, but my lack of experience in this realm makes me fear mechanic's error.
Is it possible that some slight misalignment (belt pully?) or incorrect belt tensioning could fry a set of bearings?. This is a major PITA that I hoped that I would not have to address for a very long time.
Help!
Steve