That's why I think an MT drill can put more torque to the bit.
The tang plus taper on a MT drill will keep it from slipping untill you twist the tang off or bust the gears in the head. That may be a good fail safe but that adapter can still spin in the collet, the collet spin in the spindle or both. You can also get R8 to MT adapters readily if you want to run some big MT drill bit in the mill and get solid drive to it.Īn R8 - or any other type of collet in a mill is still subject to the gripping power of the taper.