Re: [CAD_CAM_EDM_DRO] Re: access to Ametek motors- suitable for Servo application?

Earl wrote:

>Thanks for the pointers so far.
>I did get this extra info about one of the motors, the 50V one:
>
>Ohms: 0.839
>Shaft Diameter: 1/2"
>Weight: 11Lb
>Length: 7"
>Volt: 50 VDC
>Amps: 1
>
>The 1 Amp rating makes me question it significantly.
>
>I was told that the thnig will spin about 1800RPM at 48VDC, and
>500RPM at 12VDC. I have no idea if this is even remotely correct or
>not.. They also mentioned that the motors had offset brushes and were
>designed to run optimumly in one direction over the other.???
>
>

OH OH! That is not good for a servo positioning system.
1800 RPM at 48 V is fine - right in the range of many other motors.
Amps: 1 is practically meaningless. Was that the current it drew at
48V? Or at 12 V? Or is it a continuous current rating (not good).
I can't believe it is the peak rating, not with .8 Ohm resistance,
which sounds real good.

Jon