you need to match your steppers to your stepper drivers and power supply. Calculate the required voltage from the stepper's inductance (the formula's floating around somewhere), and match that with the max voltage of your drivers and power supply (with a safe margin!). You may find that based on your choice of any one of these components, the other parameters are already decided for you.
400oz/in is definitely enough, but they work best with a low-tpi leadscrew (multi-start 10tpi, or equivalently 2 tpi or so) for maximum speed. If you have a high tpi (turns per inch), like 10tpi, I think you're better off with a lower power motor, since these lose less torque as speed increases. Definitely do the calculations first and make sure your stepper/driver/power supply combo are compatible. |