Buy used Ballmills from King Industries. We can help guide you to the best solution for your equipment needs. ... ALLIS MINERAL SYSTEMS 13' x 20'5" Ball Mills, with 1,750 HP Induction Motor. Inventory ID: 6C289. 2 Units ALLIS MINERAL SYSTEMS 13' x 20'5" ( x ) Ball Mills, with 1,750 HP (1,305 kW) Induction Motors ...