Re: [CAD_CAM_EDM_DRO] Ironless DC-motors

Jim Register wrote:

>
> At 04:59 PM 9/2/2000 +0200, Anders Blix wrote:
>
> >Annybody know of a good source for Ironless (moving coil)
> DC-motors???
> >They can be of either moving basket or moving disc type. And they
> have to
> >have a torque of more than 150 zo-in (at least more or less). They
> should
> >(hopefully) be rated for more than 150 Watt.
> >

Yikes! That eliminates the Electro-Craft and Escap motors. these
companies make small motors with ironless rotors. I think some
Kollmorgen motors may reach this torque and power level, but that
is iffy, too. I know Yaskawa makes larger motors in the Minertia
line, which go from low inertia to infinitesimal inertia (inversely
proportional to cost, of course). They have ironless rotors,
rare earth magnets, ceramic shafts, all sorts of exotic features.

Jon