Does anyone know of a good supplier for BT30 spindles? 1-3 HP and approx 3000RPM. I would love to find a cartridge design w/ a build in mechanism for pull stud retention. I plan to belt drive it from the spindle motor.

I've come across a nice little unit from a Brother TC211, but it's probably not meant for milling (drill tap machine). It has small 62mm bearings.

Any help would be greatly appreciated.

Thanks!