My 15" Grizzly bandsaw is screaming; literally screaming and when I'm
not cutting. The sound is just like a dull blade ripping rock maple; a
high pitch scream.
I tried to narrow down the location (upper wheel, lower wheel, blade
guides) but it gets so loud, it just eminates from the whole machine.
I usually use TimberWolf blades although right now I have a generic one
on the saw. It's a blade from a company I've dealt with for 8 or 9
years and they are good, never had a problem with the blades. Since
this sound happens when I'm not cutting, I tend to discount the blade.
My shop and Turnings at
first I'd back off the blade guides, if it continues, remove the blade and
try again. Check the blade for damage or rubbing. My guess is a bearing has
gone or a piece of offcut has fallen and is rubbing somewhere. Also, check
the set on the teeth.
You may also try turning off and unplugging the machine, then turning the
wheels by hand.
Does it make noise with no blade? If so, it is the motor or wheel bearing.
Turn the top wheel by hand. Any noise?
If OK so far, the guides or bearings are next to check. Back them off and
bring them back one at a time.
Or try reversing this order to see if it goes away.
Follow all the tuneup steps in Duginski's Bandsaw book. If you don't
have this book, buy it. My bandsaw "screams" when the blade rubs
against the guide wheels but a slight adjustment corrects the problem.
On Mon, 10 Nov 2003 06:12:12 -0500 (EST), email@example.com (Ruth)
Thanks, guys, for the suggestions and input.
I've eliminated the blade being the problem; I removed the upper blade
shield and backed off the guides. I tried loosen the blade and
tightening, no effect on the sound.
I have two-step pulleys and tried the belt on both, still screamed. I
am using a link belt and brushed it out as best I could between the
pulley spokes and wiped out the pulley groove; still screamed.
I think it's either the shaft to the lower wheel or from the motor.
When I took the belt off the noise seemed to subside, but wouldn't the
pressure of the belt affect both the wheel shaft and the motor shaft?
Loosening the bolts on this sucker is no easy task for a mere
woman......you guys are very lucky to have shear muscle power! : )
Thanks for your time and patience.
My shop and Turnings at
I'll bet even money it's your thrust bearing. The reason I'm thinking
this is because you mention that the noise only happens when you're
NOT sawing. Back off your thrust bearing a bit and see if that helps.
I'm thinking your thrust bearing is adjusted too close to the blade.
When you're *not* sawing the thrust bearing shouldn't be spinning. It
should only spin when you're sawing. If you've been using your bandsaw
with the thrust bearing adjusted so it's touching the blade while
you're not sawing for a while it could've prematurely worn out the
thrust bearings. This might explain the loud noise you're experiencing
while not sawing. When you saw more pressure is applied to the thrust
bearings and the noise stops.
Hope this helps,
On Tue, 11 Nov 2003 09:26:40 -0500 (EST), firstname.lastname@example.org (Ruth)
Interestingly, at a recent woodworking show, the "How To Set Up A Bandsaw"
seminar featured a speaker who said this is no longer relevant. With older
bearings, it was undesirable to have it touching. However, with modern
bearings, they can spin all the time without problems. He recommended that
they be set to touch the blade. If it makes noise, replace it.
He also pointed out that the method of coiling a bandsaw blade as shown in
Duginske's book is wrong - never hold it on the floor with your foot. He
showed how to do it holding the blade in the air. Impossible to explain,
you have to see it.
If i were in your shoes, since you have discounted the blade, I would take the
blade off the machine, then spin the upper wheel by hand and listen for a
noise, if not that then turn the bandsaw on for a brief moment and listen for
I am guessing its a bearing problem on one of the wheels. Once you located
which wheel it is then proceed to consult your owners manual to take the wheel
inspect for ruined parts.
By the way you have turned some nice bowls.
I have found that the bearings Grizzly uses are less than good quality. If
you find the problem is a bearing, get the letters/numbers off the bearing
and do a google search or check with a local bearing supplier, asking for
better quality bearings.
E-mail me if you have a problem.
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