Re: [CAD_CAM_EDM_DRO] Re: hi-freq motors[perske etc]

shymu@... wrote:

> --- In CAD_CAM_EDM_DRO@y..., carlcnc@y... wrote:
>
> > I have often wondered WHY ther are no US manf of this type
> > motor/spindle??
>
> > Carl
>
> What is the reason for using hi-freq motors/spindles ?

High spindle speeds with direct drive, and no motor brushes.
At 60 Hz, you are limited to 3600 RPM. At 600 Hz, a 2-pole
induction motor will run close to 36,000 RPM. If you need
to go faster, just up the frequency (and voltage).

Jon