Technical Data EM9250 Max. Wheel Diameter w/Guard 44" (1117 mm) Max Wheel Width w/Guard 23.6" (600 mm) Max. Wheel Weight (ground fastening) 165 lbs. (75kg) Rim Diameter Setting Range 1.5” - 20" Rim Diameter Setting Range 1” - 35" Rim Diameter Measurement Range 10” - 28" Shaft Diameter 40 mm Maximum Wheel/Machine Distance 10.82" (275mm) Spinning Speed 90 - 130 rpm Max. Unbalance Value Calculated 999 g Unbalance Measurement Accuracy 0.0353 oz (1g) Average Measurement time 7 s Total Power Absorption 100 W Power Supply 115/230 V - 1 Ph - 50/60 Hz Machine Weight (without accessories) 79 kg / 174,2 lbs