Re: [CAD_CAM_EDM_DRO] What kind of motor should I use?

You had a LOUD Perske ??

The two (note correct use of word) I stood behind were very quiet. Well, not when
they got their hooks into some material. I would love *to have the money *to
purchase one of the little one horse High Freq models. As you pointed out, they
get expensive because the Inverter costs so much more than the spindle.

We could use a few newcomers *to the affordable spindle field *too!

Some of the German stuff does not seem to have any resellers over here. I wonder
what kind of $$$$ they can buy stuff like that for over there ? Maybe one of the
European Group members could set up someone in the states *to market spindles at
a lesser rate.....

Chris L

JanRwl@... wrote:

> In a message dated 03-Feb-02 12:27:51 Central Standard Time,
> prototype@... writes:
>
> > The only problem, other than noise, that I'm aware of is that the price on
> > the #7518 just went up to $330 usd at discount. I paid $275.
>
> You call this a "problem"??? Think about Perske 400 Hz. 3-phase
> router-motors! The motor/collet alone is around $1000, and it is USELESS
> without the motor-generator power-converter which gives you 400 Hz. 3-phase
> power for the thing, and that will cost you another $3000 or so, and take up
> about as much room as three 5 hp "tool motors" all in a row!
>
> One would THINK they would design these totally-enclosed external-fan-cooled
> 24,000 RPM motors to be less noisy than the "universal" type motor which is
> noisy for you. BUT! "That's someone else's job!" is the response, and you
> get a fan in a SQUARE cast-iron duct-cover at the top of this motor, with a
> fan-disk/impeller thing inside that, resulting in a near-SIREN of a
> noise-maker! Makes the noise from the kind of motor YOU have seem like an
> infant crying in another room, door closed!
>
> Anyway... If you intend to use this CNC X-Y router-table thing more than a
> total of 5 running-hours per week, expect to replace that router every couple
> of months, if not weeks! They just aren't EXPECTED to last many
> running-hours! But the HF 3-ph kind, cost notwithstanding, will run many
> hours until bearings need replacing. NO brushes!
>
> Lotsa luck! Jan Rowland
>
> [Non-text portions of this message have been removed]
>
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