Used- Hardinge Conical Ball Mill, 9' x 11'. 300 hp Westinghouse motor, 550V, 1800 rpm, 3 ph, 60 hz. Included are shell, heads, bull gear, bull gear cover, pinion, trunnions, bearings, skid stand and motor. SHARE. What Some of Our Customers Have to Say About Us "Dealing with is an easy and enjoyable process" ...