power supply required for 4 axis system

[hpghost]

hi,

I am willing to go for a gecko G201 4 axis system (X axis with 2 steppers).

I would like your advise on 3 things:
1 - can I use 2 power supplies (one for 2 motors)
2 - if I use only one supply which capacity it shall have knowing that I want to achieve high torque at high speed because my machine gantry is heavy (30-40kg). I beleive I will use steppers parallel connected.
3- Am I missing something to run the system?

here are the details of what I may intent to use:
- steppers:
860 oz. in.motor for Z axis
then for X and Y, 3 steppers: No. of wires=4, Bipolar Volts= 3.0, Amps=6.0, Ohms=0.5, Holding torque=8.5Nm. 0r 1200 oz-in

- breackout board:
CNC4PC C1G parallel port interface

- 4pcs G201 drives

- Power supply:
big question...
http://cgi.ebay.com/48V-11A-400W-Pow...742.m153.l1262
see my questions above...


if you'd like to see my machine (currently running on Xylotex):
http://www.raptor-rc.com/cnc.htm


thanking you in advance for your advises.

[ger21]

About 16-20 amps, and for voltage, use 32 x sq rt of the motors inductance.

[hpghost]

so I beleive that I need only one power supply as shown on the web link. is it?