Originally Posted by
Jeremiah
Chris, if you only paid $60 for three motors and drives you did good (if they
all work). The good about them is they plug into a regular 120v household
outlet,(no external dc supply required for the motor drivers). I had two of
these motors on my Grizzly 7x12 lathe and they worked fine. The reason I
took them off was that the resolution (25,000) steps/rev,combined with
the leadscrew pitch and my attempt at electronic threading using a 486/66
computer. I just could not get the speed on the Z axis to keep up with the
spindle. But otherwise they worked fine. If you are planning to use these on
a mill you should be fine (depending on your leadscrew pitch). These motor/
driver combos should have no problem winging a Dremel around at a good
speed. When you get them hooked up be careful of touching the motors
because they do run hot. With that said, I am still in pursuit of electronic
threading on my lathe. I have tried larger motors/drives/faster computer/
pulley sizes etc, without luck. The leadscrew pitch seems to limiting me to
the lower spindle speeds at which the torque of the spindle on the mini-lathe
sucks. So I'm in the process of converting to ballscrews. But to answer your
question, those stepper/combos should do fine for you. I tried bigger ones
for my quest, and they did no better than what I started out with.
Good luck.