inside diameter: 248 mm. Diameter: 610 mm. Lapping disc speed: 30 - 90 t/min. Voltage 50 Hz 3x: 400 Volt. Air connect: 4 bar. Main motor: 2.2 kW. Lapping pump: kW. Total power required: 4 kVA. Machine's weight about: 820 kg. Length: 1300 mm. Width: 1160 mm. Height: 1800 mm.