I'll post pic. a later. The model is Emco Fb2 (they no longer produce it new model is Fb3) with 300W 3phase motor (380V), gearbox for changing speeds between 120 & 2000 rpm, and realy precise x,y,z movement with no air in the spindels.
Emco home page is here:
http://www.emco.at/index.php if you need more info on products.
g_n, I know that 6 and 8 wires motors can be used both uni or bipolar mode, but 4 wire is stricly bipolar, I try and find some data on those motors and no luck, I only got phone number from company that makes them (I emailed the company with the same name, but they make other stuff, so they gave me their phone) it's from NY and this is the number 800-394-9866, but this is a little use for me, so again big request if someone could give them a call and asked about holding torque for stepper Model 23D-6229D, thanks