rpt007I've been looking these variants:

CheaperNot that cheap, but still cheapBoth have free shipping to Hungary.

billcatYes, I meant current

If I'm not mistaken, you're using belts for the X and Y axes while the Z axis is driven by a ballscrew.

I've found an equation for ballscrews (I've been searching for these equations, but Google wasn't willing to help me before, and now, without even searching for it, I've found it). It says that for, for example, a router

like this one wighing about 4 kgs, with a ballscrew that has 3mm lead, I require 0.02122 Nm torque (for keeping up the raising of the Z axis).

So,

this motors torque has to be enough for raising 4 kgs at max, according to the datasheet.

But, if the driver can make it a little bit more powerful (I don't know if it can), it should be enough. But, because I don't know the weigh it will have to move, for the Z axis, I'll have to use

this motor. Please, correct me if I'm wrong.

The equation is: Torque eqauls with linear force times lead divided by 2 times pi times ballscrew efficiency. (T=(F*l)/(2*pi*e))

But I might be able to use the linked nema 17 for the X and Y axes, if I'm not wrong.

#21(rpt007)So, what should I use then?