Min. internal grinding diameter - 0.5 mm Max. internal grinding diameter - 15 mm Grinding depth - 75 mm Centre height - 60 mm Distance between centres - 125 mm Max. work piece diameter - 80 mm Workpiece spindle speeds: - stepless - from - 150 rpm up to - 1500 rpm Spindle hole - 12 mm Possible grinding-spindle speeds: - up to - 120000 rpm Grinding table travel: - max - 225 mm Table speeds: - stepless - from - 1 m/min up to - 8 m/min Voltage 50 Hz3x - 380 Volt Workpiece spindle motor - 0.3 kW Machine's weight about - 650 kg Overall dimensions machine: - Length - 1200 mm Width - 1150 mm Height - 1500 mm Various accessories: - Redressing device - 3-jaw chuck - 2x Internal grinding spindle: - JS 80 / JS 120 number - 2 max. speed - 120000 rpm max. speed - 80000 rpm Set of collets - W12 / W20 Air spindle -