Re: Stepper Size Selection

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Michael Fagan"
<woodworker88@...> wrote:

>
> Yeah, that's a bit smaller than I think Tom was thinking of. I'd say
> that 250 oz-inch motors might be a little small, but 350 or 400
> oz-inch motors, directly coupled, would probably be pretty reasonable.

OK, that gives me a good ballpark figure. I suspect that a motor of that
size might be obtained in a NEMA-23 or a NEMA-34 frame size. Is that
true? If so is there any notable advantage of one over the other?

> I'd give a conservative ballpark estimate of 15-20 IPM cuts in
> aluminum and 40-60 IPM rapids. Alot of your max speeds will be
> determined by your top spindle speeds, which at 2200 rpm is pretty
> low.

Like I say, I don't really have the experience but that seems well
within my expectations.

Thanks for the help, Michael.