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.