How much A, and how much V

[irving2008]

Goran, do you really need such big motors? I guess those are NEMA34 units...

[Goran]

Hi and thank you for answer.
There is one thing that make me confused. I found on lot of sites that voltage of power supply should be 10-20 multiplied voltage of motor. So if my motor have
voltage 1,9V, my power supply should be 19V-38V?
Reason for the this motors are their price (93€), motor 4,4Nm is 83€ and motor 2,1Nm is 65€. I thought that 10€ is not to much for 0,7Nm stronger motor.
I want to do 3d, and I thought stronger is better.
I have once more question. What to by:driver SD4350 (voltage 24-50V optimal 36V) 76€ or driver SD5980 (voltage 80V) 98€?
What is your advice for motors? My intention is to do 3D carving. Is NEMA 23 enough?
Sorry for my English. I hope you understand what I havew to say.

[Goran]

If this formula is correct, then the motor NEMA 23 1,6Nm 7,5V 1,5A 10mH need power 101.19V.