... we use variable pump, Yuken, Japan. It is energy saving machine, can save about 30%- 60% energy Specifications:Injection Unit1) Screw Diameter ... 34, 36, 40mm2) Injection Capacity 131, 147, 181cm33) Injection Weight 119, 134, 165g4) Injection Rate 81.2, 92, 113g/s5) ... Plasticizing Capacity 10.6, 11.9, 14.7g/s6) Injection Pressure 206, 183, 149Mpa7) Screw Speed 0-200rpmClamping Unit1) ...