At 12:20 AM 4/12/02 +0000, crankorgan wrote:
>Dwayne,
> My Dremel passes that test. My runout shows up
>above 16,000 rpms. The bits are balanced so one of my
>bearings must be bad. I changed the collet and got
>the same results.
You are probably right. Another possibility is that the armature may have
become unbalanced. That will also show up as increased vibration as well
as excess run-out.
The thing I like so much about these little air tools is that the rotor is
so tiny that balance is less of a problem.
I've fired up both die grinders and the tip of a #65 carbide drill bit does
NOT appear to grow larger as the speed increases. I think they will work
just fine!
dwayne
Dwayne Reid <
dwayner@...>
Trinity Electronics Systems Ltd Edmonton, AB, CANADA
(780) 489-3199 voice (780) 487-6397 fax
Celebrating 18 years of Engineering Innovation (1984 - 2002)
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