I just salvaged these motors off a big piece of machinery at my local scap yard
the hole lot only cost me $20.00 and my time to pull them
so I don't think I did to bad
the information I got is as follows

the gray one is a Baldor dc servo
torq. stall 30lb-in
max speed 2500 rpm
max valtage 180 vdc
valtage const. ke=64 v/k rpm
current const. 6.16 A
current peak 24 A
insulation class f 25 c amb
tachometer 9.5 v v/k rpm

the red one is a Pacific Scientific
1.8 degree step motor
4.55 v (dc)
7.9 A (dc)
class B
ambient 40 c

the two black ones are Zobo Tronics
type sm 86.3.18.jw6
serie: 8601
Amp/ph:6

some of this info I can grasp but most I don't, this will be by far the hardest part of my cnc
like what the torq is for the steppers?
how to size up drivers and power supply?
how to test to see if the motors even work?
I'm also more familiar with oz-in what would 30lb-in be?
I know I'm asking a lot, even if you could point me in the right direction

many thanks Russell

Looks like you might have done ok for $20.00 the Baldor DC is fairly large 30lb-in = 30x16 = 480oz-in.
You can test the DC motor in a limited fashion by connecting across an 12v auto battery.
Probabally pay to check the brushes first.
Al.