Re: [CAD_CAM_EDM_DRO] CNC Servo motor gear ratio: overheating. EMC step rate. Tablespeed

On Sun, 2003-06-08 at 12:52, Jon Elson wrote:

> Tim Goldstein wrote:
>
> Yes your motors will suffer major heating problems set up that way. If
>
> >you want to run at that low an RPM you need to use steppers.
> >
> I think not, as his expected load is 2.8% of the peak. These are very large
> motors, and he doesn't expect cutting loads, apparently.
>
> Jon

I do expect cutting loads. 25 lbs was the empty (ie non cutting) force
on the table. We occasionally want to push a 3/4" endmill at 5 ipm.

Could someone please explain to me the difference between the torque
ratings of servo motors versus stepper motors ?


--
Kim Lux <lux@...>