Joseph Gwinn wrote:
I am sure of nothing except that if I take the belt off and let the motor run,
no funny noises. Hmm. I last did that when a prior new noise happened a few
months ago. I should repeat the test. I've been busy at work, and had not
been using the Millrite all that much.

Anyway, I think it's time to take the spindle apart, if only to clean and
regrease it. For all I know, it has never been taken apart since it was made in
1965.

If it is similar to a Bridgeport, there is a backgear assembly, and a
direct drive clutch. If so, you can disengage all the clutches and
gears and see what makes noise when you spin it.
When I got my Bridgeport 1J head, all the bearings in it were massively
shot except the main spindle bearings. It didn't make bad noises when I
ran it, but I was glad I opened it up and took a look. Some of the
smaller bearings had crumbled the ball spacers and thrown off their
shields. Would have caused a HUGE disaster in no time if I hadn't dug
into it.

Jon