Yep got them on my Taig mill with Xylotex controller. Probably limited to the max voltage potential and speed because of the Xylotex but you can't beat there price for a 3 or 4 axis bipolar controller. I run a 28.5 vdc PSU into the Xylotex and the low speed torque is plenty for the taig. The motors only get luke warm on that setup after running for several hours.
Want more out of them, then use Gekco's on them.