Ballscrew Thickness!

[Gary]

If you are set on a smaller screw, and by the looks of it, you could get away with it, then it may work, but you also need to take into account the mass you are moving.
the heavier the Y axis the more mass the X has to move, and if you want it to move quick, that is a lot of inertia it has to overcome and that requires power.
You allready have the motor, so you can allway try them, but i dont think you will get the speed you want, especially with the current drivers.
The voltage of the drivers is the killer, so i suspect you will need to change them to a higher voltage driver.

What are you making the frame out of? if it is quite large it needs to be as ridgid as possible, or any small amount of flex will be seen.

We are starting to develope a Y and Z axis combined but it is made from steel, so is quite heavy.
The attached pictures shows a large Z axis (400mm stroke and a 34 frame motor) and this weighs about 15 KG, so i suspect our Y axis would be about 50KG.