RE: [CAD_CAM_EDM_DRO] Is this Servo good for CNC Router ?

you can get these from goldmine electronics, and save a few $$ compared to
what everyone gets them on ebay..


Erie Patsellis
Shelbyville Design & signworks
217-774-4444
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<mailto:signworks@cond>

Visit our website at: http://www.shelbyvilledesign.com



-----Original Message-----
From: Jon Elson [mailto:elson@...]
Sent: Thursday, September 18, 2003 11:18 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Is this Servo good for CNC Router ?




clone_enolc wrote:

>I was wondering is the servo motor listed below might be good for a
>really beefy CNC router? I know it could handle the torque, but what
>about the speed? They can use the low-cost Geckodrive G320 and G340
>Servo drives. What do you think? Any opinions appreciated!
>
>Reliance Electric DC Brushed Servo Motors, Model E712
>37.51 Oz-In/A
>25.0-30.5 V/KRpm
>Motor Terminal Resistance .75-1.02 Ohms @ 4A.
>Maximum Terminal Voltage 60V
>Maximum Continuous Speed 2100 RPM (No Load)
>Maximum Peak Torque 1500 Oz-In.
>Maximum Peak Current 44.5A
>Maximum Continuous Stall Torque At Max Motor Temp 300 Oz-In.
>Maximum Continuous Current 8.9A
>Electro-Craft brush-type DC servomotors
>
>

Holy cow! Yes, it is good! Even at 20 A, you'd get 20 * 37.51 =
750 Oz-In.! At 60 V, you get about 2200 RPM. A WONDERFUL
motor for a big machine tool retrofit. It should work well for a
router, too. As for speed, it just means you don't have to gear it
down.

Jon


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