Reply by unbob

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Posted on Questions about Grizzly table saw

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810 posts in 1897 days

#1 posted 09-12-2013 04:43 PM

Myself, I wouldn’t use link belts on multi groove pulleys, some do though. A single link belt does work wonders on some contractors saws. Thoughts on multi groove pulleys and belts on cabinet saws.
Three belts is not really needed to transmit 3 or even 5hp. The reason for the extra belt is to cushion vibration. and can be run looser for vibration problem.
The manual for the Puni-saw states not to let the weight of the motor tension the belts. If that is done, they will be too tight when warmed up, they do get warm. When belts get warm, they get tighter, due to expansion in cross section is more then expansion in length.
There is a fine point of good belt tension on saws, too tight, the machine will rumble-too loose the belts will slap. Both conditions cause vibration.
I found it worthwhile to find that sweet spot in belt adjustment between too loose and too tight, and adjusting when the belts have warmed up.
Its stated by belt manufacturers that modern belts do not need to be matched like the old days. This is not exactly true.
Goodyear states that the shelf life of their very good Matchmaker line of belts have a shelf life of 7yrs. I found the hard way, a “new” belt that is a few years old will not match up to a fresh belt. I use that brand of belt on one metal cutting machine that uses outside rollers for belt tension, those belts have a smooth back side.
Its best to get belts from the same lot code printed on the back.
I currently use Gates Vextra on belt driven cabinet saws, with good results. Cheaper belts, are lumpy in my experience.
Just my opinion.

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