Re: [CAD_CAM_EDM_DRO] What variable speed motor to use?

Lee,
The "treadmill motor/controller" set sold at Surplus Center
800-488-3407 p/n 10-1806 at $49.95 (No web site)
is a great choice for this. I have a drill press and a Bridgeport
mill converted to DC and love it.
These are industrial 90VDC PM units with full speed range and feedback
for torgue. You will have to fab a mounting method as the frame is not
standard.
RichD

amylknight2000@... wrote:

>
> Hello, I happened upon this group searching for info on
> DRO's and machine tools, after reading a few messages I thought
> I'd join. looks pretty civilized and informative.
>
> I have recently purchased a Harbor freight 3 in 1 machine tool,
> and I'm pretty happy with it, it's more than I expected of a low
> priced asian import.
> One problem with this one (it's the lathe mill drill, no power feed,
> and metric feed screws)is the lack of speed choices for the lathe
> spindle. it has only has 3 speeds, fast, fast, and faster.I'd like
> some lower speeds and more speed choices ,and from looking at all the
> options so far,
> seems to me a variable speed DC motor would be the simplest way to
> accomplish this.
> So what DC motor/speed controller would be suitable for this
> application?
> the motor pushing it now is a 1/2 hp single phase AC motor.
> I see many motors for sale on ebay and such, but I don't know
> from "universal" "permanent magnet" "shaded pole" .... you get the
> idea. I'm looking for a reasonably priced variable speed motor and
> controller
> capable of running this machine with a motor speed from 0 to 1500-
> 2000 rpm range... say about 1 hp. any info would be appreciated.
> thanks.
>
> Lee
>
>
>
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