BUt that servo motor does not spin at 24k rpm. Neither the chinese BT30 spindles will spin very fast. Also these belts setup is not made to spin that fast as you wish. So i don't see how you are going to do that?

I dont know what jobs you are aiming to do, but from my point of view is absurd to change servo motor functionality / rigid tapping, etc./ for high speed.

I think best would be you change to BT30 spindle using your servo motor. Or add faster chinese servomotor. And separately add 3kw spindle for other type of jobs.