Servo motors

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Subject Author Date
Servo motors Lester Caine 05-12-2008
Posted by Tony Jeffree on May 13, 2008, 4:12 am
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 On Mon, 12 May 2008 17:58:04 +0100, Richard

>
>>
>>You're going wrong by confusing power and torque.
>>
>>Power is torque times RPM.
>>
>
>>Regards,
>>Tony
>
>That's sort of right conceptually, but just in case you are tempted to
>actually try to calculate a 'real' power
>
>Power (W) = torque (Nm) * omega (speed in rads/sec or RPM*Pi/30)
>
>Richard

...So I didn't say what the units were <G>

Regards,
Tony

Posted by Emimec on May 12, 2008, 3:00 pm
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> Can anybody give me some links to possible sources for servo motors
> suitable for use with smaller CNC machines. Apart from the 'refer to sales
> office' links the best I've come up with so far is a site offering motors
> at £1200 up to £3500. Somehow that seems a little excessive when the mill
> only cost £650.
>
> I know we will be looking at a price premium over the closed loop stepper
> option using 0.2Nm motors, but there must be something suitable to use
> with the Gecko servo drive at a reasonable price? I presume I am looking
> for something ideally with a Nema23 mount and I think 0.4Nm seems
> practical in that form factor? But with an assembly somewhat longer than
> the 0.2Nm stepper with encoder?
>
> --
> Lester Caine - G8HFL
> -----------------------------
> Contact - http://home.lsces.co.uk/lsces/wiki/?page=contact
> L.S.Caine Electronic Services - http://home.lsces.co.uk
> EnquirySolve - http://enquirysolve.com/
> Model Engineers Digital Workshop - http://medw.co.uk//
> Firebird - http://www.firebirdsql.org/index.php

I have 2 motors stuck under the bench at work, I'll have a look and send the
details from the label.
Bob



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