sorting these motors out

I see lots of posts in the various CNC-oriented groups about people with some
pretty heavy-duty setups spending some really astounding amounts of money on
stuff... Not me! I'm a scrounger, been that way since way back when.

Anyhow, I've got an assortment of motors here and am wondering what might be
useful in terms of the machine I hope to build somewhere not too far off.
This is gonna be a small one (I'm still in a second floor apartment) and will
probably see most use for milling/drilling circuit boards.

These motors came out of old floppy drives, printers, and similar stuff.
Some are fairly plainly marked as to what they are, winding resistance,
current, etc. while others aren't. Is there some easy way to track down
specs on some of these that are only marked with model numbers? Many are
Japanese makes, for whatever that's worth. Or is there stuff out there on
the web that would make this chore easier?

I see fairly common references to specific motor sizes in terms of a NEMA
number, but have yet been able to nail that down to anything in particular
regarding size. My one attempt at the NEMA web site wasn't all that
successful. Is that info out there anywhere else?

I have some motors here that were for floppy spindles, one direct drive (I
don't usually salvage those too often) but most were belt-driven, don't know
what I'm going to do with those as the RPMs would probably be on the low side
for much of anything useful. I also have several that were pulled out of
3.5" floppies, and these are equipped with screw-type shafts and are
apparently okay for only a limited travel. Suggestions as to what to do with
these would be welcomed as well.

My thinking is that the least ones that are probably going to be useful are
the ones that came out of 5.25" drives, either the roughly cubical ones or
the "pancake" style ones, which were both used the same way with a band-type
head positioner and probably have roughly comparable torque.

Then there are some others here, that I'm not all that sure about. I *think*
these came out of old daisywheel printers, and they don't look like
steppers, but in many cases appear to be equipped with optical interrupters
at the back end of the shaft, in one case under a plastic cover (labeled
"Warner" and "Rated 1 AMP" and "Resistance/phase 20 ohms" but not much else)
or there's a small circuit board on the back end of the motor with a separate
cable coming off it than the one that provides the motor drive power and an
optical interrupter disc is visible attached to the motor shaft. A couple of
these are pretty substantial compared to the rest of the pile, maybe 2,
2-1/2 inches in diameter and 3-1/2 - 4 inches in overall length. Most of the
rest of this stuff is significantly smaller.

Any help on finding any useful info on these, or suggestions as to what some
of them (the drive spindle moters in particilar) might be used for would be
appreciated.