On Jul 20, 1:16 pm, " wrote:
On Jul 20, 4:39 pm, mlcorson wrote:

I just got this Rockwell 1970's sander. It has a 3/4hp, 3420 rpm motor
on it. This seems very fast to me. What size is your machine side V
pulley? What rpm is your motor? I went to the Delta/Rockwell website
and found the specs. They call for a 3400+ rpm motor. My machine may
have the wrong size V pulley. Any information is appreciated. Thanks.
_mike

My motor looks to be the original motor, has a Rockwell id plate on
it. It is 1/2 hp 3450 rpm. The motor has a pulley that is just
slightly bigger than the pulley that drives the belt. OD of the motor
pulley is about 3 inches.

Hope that helps.

Dan

Yes, helps a lot. It matches my machine. I was going to put on a
larger pulley on the machine, but now I won't. Thanks!
-Mike