Pulling my hair out trying to identify NEMA motor size

[drboostv6]

Hi All,
I'm building a CNC plasma table out of re-purposed linear rails:
http://www.cnczone.com/forums/plasma...tml#post951368


Above is what it looks like together (my Z), problem is its a servo+planetary and swapping out to steppers(with or without planetary?) (cost reduction). I've been trying to figure out what size these are as I can't find any NEMA spec to match? Are these just straight up metric pieces? Please help...

[James Newton]

This table of NEMA measurements may help:
techref.massmind.org/techref/io/stepper/nemasizes.htm