Arburg All Rounder injection molding machine. Model 221-55-250 Preowned: 25 ton Arburg All Rounder injection molding machine. Model 221-55-250 Screw Size: 0.87 dia. in, 22 dia. mm. Area of Screw: 0.59 in2 Screw Type: GP Compression Ratio: 2:1 L/D: 23:1 Max Shot Stroke: 3.94 in. Max Inj Rate: 2.67 in3/sec Max Inj Velocity: 4.53 in/sec Intensification Ratio: 15.0:1 Max Hydraulic PSI: 1628 hpsi Max Plastic PSI: 24381 ppsi Clamp Unit: Max Tonnage: 28 tons Tie Bar Spacing: 8.70 x n/a in. Platen Size: 12.46 x 9.84 in. Max Mold Height: 5.9-11.81 in.