I have a mill i bought cheap that does not work. I would like to use the existing steppers

POWERPAC
Model N34HRHM-LNK-NS-00
Bipolar Paralel 1.8°
Holding Torque 2725(19.23) (2 phases on) oz-in (Nm) ±10%
Rated Current/ Phase 11.3 (amps DC)
Phase Resistance 0.2 (ohms) ±10%
Phase Inductance 2 (mH) Typical
Detent Torque 65 oz-in (Nm)
Thermal Resistance 1.3 (°C/watt)
Rotor Inertia oz-in-S² 0.075
Weight lbs 15.1


with the G203V but the G203V spec sheet says
"The motor’s rated phase current must not be more than 7 Amps"
as you can see in the specs these are 11.3.can i still use these and just run them at a lower power or derate them somehow.

I also need a power supply and i find the "formula" confusing can someone tell me whitch numbers i am supposed to be doing what with. I would like to understand selecting the power supply better using 3 of these steppers.

would derating these change the power supply i needed.