Re: [CAD_CAM_EDM_DRO] Spindle motors

At 10:22 PM 8/28/2007, you wrote:

>By the way, what is the voltage rating on those motors? I didn't see
>one listed.

Count the NiCad cells and multiply by 1.25 or the LiPo cells and multiply by 4.

They tend to run from 10 Volts to 40 Volts. And I was wrong,
controllers now go to 300 Amps!

Still, a 1 HP, 60K RPM engraving spindle is reasonably hefty. For
slower speeds, more conventional motors and VFDs are probably a better choice.

Since the motors are optimized for props and ducted fans, I bet a
smaller ducted fan would both cool the motor and remove the engraving chips...


David G. LeVine
Nashua, NH 03060