Beginner question

By higher gearing, do you mean the gearing that is provided from the motor and ballscrew interaction?
And would a 750w+ servo need ballscrews thicker than 20mm in diameter?

The diameter of the screw needed is often more influenced by it's length and maximum RPM, but load and how it is supported at the ends also factor into it.

For example in an application where a 5mm pitch screw works well with a direct drive step motor, you may want to add a 4:1 belt reduction to use a servo.

This guy has some good videos over drive dimensioning



Ok, in German...

for steel the frame stiffness is the most to care about
NO Gantry
HARD as STONE
NON Flexing Liniar

therfor most are retrofitting a older MAHO at 1500 USD or simular

pl7i92 wrote: therfor most are retrofitting a older MAHO at 1500 USD or simular

Where ??? Last time a checked a month ago, nothing usable under 6800 Euro!

Anything simulare to that in Norway costs around 6000usd, if youre lucky. And its probably really worn down. Which is why im building it, but i also do it for the learning experience.