If you buy the xylotex board, you can get 116oz=in motors with the board for about $50 for 3. You can get the same motors on Ebay for about $30. They are listed usually at least once a week. Like I said before, I have 250 oz-in motors to run with my xylotex. I got them on Ebay for about $60-$70 each. From the charts I've seen, NEMA 23 size steppers lose about half of their torque by around 500 rpm, when running at 24V. I'm not positive, but I don't think 28 oz-in will even be able to turn your ballscrews. And yes, multiply by 16 to get lbs.
Gerry
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Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |