I have an Aerotech Unidxe U-12 4-axis CNC Control. Basically an older version of this: http://www.aerotech.com/products/controllers/u511.html
It has 3 DC Servo (brush style) axes and a stepper axis.
The problem I am having is that the DC Brush controllers run at 130VDC and I have no idea where to find DC servos of beer-can size (for use on a hobbyist CNC lathe or mill like NEMA23 or 34 size) that run at such a high voltage.
There does not seem to be any easy way to lower the voltage on the drives either.
I hate to spend...well, I WON'T spend $500 each for motors from Aerotech. Just need an alternative.
If not, anybody want to make an offer on the controller? I'd be happy with enough to cover a pair of Rutex 2030 drives to use instead.