Hi mike_Kilroy,
Look at this pic, it's the motor on the right side of the pic:
http://img137.imageshack.us/img137/5914/cimg4044.jpg
It's a PMDC NEMA 34 size motor, voltage is 24 VDC but it has no current rating marked on it...its shaft is round & smooth with no key or flat surfaces, the end of the shaft is conical.
This motor seems to be quite powerful, I did try to stop it by holding the shaft with a thick piece of cloth it barely slowed down with little rise on the amp meter, I don't think it reached 3A, I couldn't stop it & the end of the shaft got hot from the friction with the cloth.
I couldn't measure the speed under load.
you'll find more pics in the first post.
Thanks !
cnc2.