It’s a 150mm c-beam https://www.aliexpress.com/item/32887175237.html
2mm pitch, 4 threads = 8mm lead. With a small gear ratio i got 10mm per rotation.
So ~ 3 times faster then stock using original z-motor.
The spindle is 500W 0-10000rpm https://www.aliexpress.com/item/32701544281.html
Once someone adds speed via g-code to the software, it can be software controlled.
colaboration-request-to-add-spindle-speed-via-g-code-in-fw-gc
The spindle clamp did not fit the c-beam plate, so i needed to modify.