|Forum topic by speakerscott||posted 02-18-2014 05:26 PM||965 views||0 times favorited||1 reply|
02-18-2014 05:26 PM
I’ve been trouble shooting some blade wobble on my late 90’s US made Unisaw. I found one problem, my matched belts are no longer matched, one of the three has taken a set and is longer than the other two. I’ve reduced my saw to a two belt saw (outside two grooves) and it’s much better. Thin kerf blades still wobble but the standard kerf blades don’t
I measured the runout at the end diameter of a blade and found it to be +/- .0015 or so, which is far better than I expected.
The question is how spinny should the arbor be without the belts on? It spins freely and using a mechanics stethascope (screwdriver) I don’t hear anything particularly bad. Give the blade a good hand spin it will spin for a while, but does slow down fairly rapidly. Should it be like a skateboard wheel that just keeps going?
-- Scott, Austin-Texas...