it is for my denford triac.

I have two options as I see it.

current setup on the triac is servo motor drives atc spindle via a belt. now looking at the specs of belts I could put one of those Chinese 24k spindles in and replace just the servo motor, but the belt would be right on its limits of speed.

or other option would be to get an expensive atc spindle all in one and replace the whole lot.
current tooling is bt35, but im never going to find a bt35 spindle so new tooling will be required.