Re: Motor calculations? Help!

Well, the original drives all have 15 amp fuses on them and the
power supply transformer for all the drives is 2.5 KVA. I think 20
amps is going to be enough to run all 3 motors in realistic cutting.
This thing really isnt a hog. it only uses a 30 taper tooling and
has a 2 HP spindle motor. Too big of a side load and it would break
the little nub things that hold the tooling in the top. I kept
looking at all these motor specs, then I stepped back and took a
look at was was in there before. it seems like the motors would be
capable of working much harder than the machine needs them too.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
> cnc_4_me wrote:
>
> >Jon, I do not see this the same way you do. Don't you think the
> >continuous current rating is more important than the peak current
> >rating? 28 Kg-Cm / 2.44 Kg-Cm/Amp = 11.5 amps, a gecko would
still
> >have plenty of reserve. 20 amp limit would still give 49 Kg-Cm. I
> >wish i had one of these motors for my Z axis.
> >
> >
> What's the peak rating for, if you never can get closer than 20%
of it?
> I might be worried that you might not be able to break static
friction on
> the table with 20 A. What is the leadscrew pitch, and is the
screw directly
> driven by the motor, or is there a belt reduction?
>
> What horsepower and spindle taper does the machine have?
>
> Jon