This article is from the Woodworking FAQ Collection 2, by multiple authors.
From: saksa@hpldola.COS.HP.COM (Tom Saksa)
Date: 12 Nov 91 23:37:05 GMT
Randy K. Styborski writes:
- How much vibration is normal? With just the motor running (no belt)
I get the usual motor vibration (i.e.- "Yep, the motor is running
but feels fine"). When I connect the belt but with no blade, I get
the motor vibration plus a reasonably gentle, low-frequency
vibration. The blade/upper wheel adds a little more low-frequency
vibration. I don't know if it is a problem yet, but at the least it
makes the saw less pleasant to use.
Randy's saw is the 14". I have the three wheel 16 inch and have
a similar vibration. It was not very noticeable but I decided
to check it out anyway. After taking the saw apart I found
that one wheel was not as true as the others and this was
causing the vibration. I plan to take the saw to the service
center in the next week or two and hope that they will
replace the wheel that seems out of balance. The saw is
still under warranty. I will report on the results.
I know that having a wheel unbalanced can affect the accuracy
of the cut and the life of the bearing. But does any one
know what are reasonable tolerances for these things? I know
that no wheel is perfect, but when should you worry?
- the lower thrust bearing had > 1/64" of side-to-side play. The
dealer gave me a brass washer for the interim while he orders a
My saw also had a bit of side play. I do not think it is
enough to matter but I will probably shim it up snug but not
tight. I hope their is no problem doing this. I will ask
at the Delta service center what they think when I bring it