Re: Motors

Hi Alex,

3 wires! That makes the SS50 a SYNCRONOUS motor. 60Hz. Not much use
to us as a stepper (although I have heard tails of them being rewired
to be sloppy steppers).

The 20V and 30V motors are DC MOTORS (possibly servos)! I'd been
thinking that you were talking about a nice cache of STEPPER MOTORS!
These voltages now make perfectly good sense. Do they turn with a few
volts on them? A good servo motor (I'm told) will turn with a few
volts. Put on a few more volts, is the rotation smooth, or does it
feel like it cogs? This too is an indication of a motor's suitability
for servo use.

Now that we know what motors you have, I'm sure others on this list
can offer more (better) comments.

Alan KM6VV

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...> wrote:
> Alan,
> thank you for your reply.
> I only detected 3 wires coming out of SS50s.
> Does it mean that they are unipolar?
> 20V and 30V motors are PM DC. They are quite heavy, with approx.
Dia. 5/8
> shaft.
> Regards, Alex
> ----- Original Message -----
> From: Alan Marconett KM6VV <KM6VV@a...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Friday, April 25, 2003 4:31 PM
> Subject: Re: [CAD_CAM_EDM_DRO] Motors
>
>
> > Hi Alex,
> >
> > SS50's are OLD! As long as they're bipolar, they will work
(unipolar
> > could too, but fewer high end drivers available). Much better
motors
> > available now, of course.
> >
> > The 20V & 30V figures on the motors doesn't sound too interesting.
A
> > few volts, 2-5V or so, is to be preferred, so that a 15 - 20X or
so
> > supply voltage doesn't get too high (Geckos like < 80V).
> >
> > HTH
> >
> > Alan KM6VV
> >
> > alex wrote:
> > >
> > > Hi,
> > > I stumbled into some used motors - can be bought very
inexpensively.
> > > Slo-Syn 600 oz-n, SS50-P2.
> > > Another appears to be DC by Ametek - says 30 VDC.
> > > Also - no name, but quite big - says 20V DC.
> > > Can you please give me an idea if these motors are good for
anything?
> > > Regards, Alex
> > >
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> >
> >
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