access to Ametek motors- suitable for Servo application?

Hi everyone..
Im in the pre-building my next CNC mahine phase. Iv been useing
steppers up till now and am wanting to move over into servos.

I have the opretunity to purchase some Ametek DC motors which *look*
like they would be suitable for CNC aplication. I plan to use Geckos,
etc.. with about a 36V or thereabouts supply.
I would be much appreciative if someone could help me out in deciding
to get some of these motors or not.
here are some links to some pictures:

motor #1
http://www.geocities.com/johnperezinc/ametek30v.jpg
has markings:
"130687K7
961510-201 Rev. E
01A (E56617) 116400-00
30 VCD Nominal"

motor #2
http://www.geocities.com/johnperezinc/ametek50v.jpg
has markings:
"160590F7
35-001000-001E
01A (E56617) 116150-02
50 VCD Nominal"

Motor #3
http://www.geocities.com/johnperezinc/ametek72v.jpg
Claims its a 72VDC motor.
has markings:
"260287F7
01A (E56617) 116449-00
A35D20067-01
6989"

All i know is the Nominal Voltage on each and that they do not have
encoders.. In not even sure if they have access to the shafts on the
backside for mounting anything to them..
They are being sold as wind generators and/or battlebot motors.

Anyone have any experience with anything like these? Are these
anything like the "other" Ametek servo motors available around?

Thanks much-
Colin