Originally Posted by
mactec54
Momentz
Not a chance that you could run a 50mm face mill without drive keys, if you were running high speed all the time with small cutters then you would be fine without drive keys, any other general milling at lower speeds, which is normal, you will need the drive keys, Emco FB cnc mills figured this out, with there 30 taper spindle, they only use a .6 Hp Dc or a 1 hp Ac max for there drive motor, any more and you will have the tools slipping in the spindle, so at 3Hp for your spindle motor, you need the drive keys
The TTS does not compare to a ISO 30 spindle