I am pretty stumped here..

I am doing a retrofit on a brother TC-225 drill tap center. I am sourcing a spindle motor for the machine and am looking to use a synchronous servo motor so I can have rigid tapping capability.. but heres the stumbling point, I cant seem to find any servos with a rated speed of more than 3000 RPM. I would really like to find something in the range of at least 8000 if not 10000RPM. the stock motor was 6000. I plan to install a higher rpm motor and upgrade the bearings to allow for the 10000 rpm spindle.

But again I cant seem to even find one 10000 rpm servo with something like atleast 15NM. What am I missing? how are all these other manufactures doing direct drive motors to spindle and getting 10-12000 rpm?

Thanks for any help i am just ripping my hair out with this right now.:drowning: