Re: [CAD_CAM_EDM_DRO] Spindle designs - what are you using....

JanRwl@... wrote:

>
>In a message dated 11/9/2004 11:27:33 AM Central Standard Time,
>lcdpublishing@... writes:
>
>What about a scratch built machine, have any of you designed your
>own spindles? This looks like the next direction I would like to go
>and I would like something better than a router motor for a spindle.
>
>
>
>
>Chris: The "professional" way to build a router-speed spindle is to use a
>400 Hz 3-Ø motor, powered from a motor-generator or VFD. See Perske (a
>German firm). They make ALL sizes of such, with every description of collet.
>Bring money!
>
>

You can also get surplus Precise spindles on eBay. Sometimes you can
even get
the frequency converter with them. They run on 2-phase power, so can't
be run
directly off a VFD. The common model runs up to 54,000 RPM on 165 V 950 Hz
power. The very old models had universal motors and will run off 120 V
60 Hz power.

Jon