The Datasheet is wrong, they say that the current is 3A in series and 4.2A in parallel.
This cant be right, also the holding torque is different in series to parallel.
I think they are getting confused between unipolar and bipolar.

Also a 10mm shaft is a bit small, but that is not a real problems.

I suspect the motors are surplus.





Quote Originally Posted by Robin Hewitt View Post
I'm going to try them on my mill, see if I can get the G00 speed up a bit. I've got 40v drivers in there at the moment, top speed is 10mm/s so I run it at 6mm/s to be safe. If it looks hopeful I'll uprate the drivers. With the extra oomph I could, theoretically, halve the pulley reduction and make it zippy. I'd like 20mm/s but more would be nice.