... .High efficiency and long life 2.Strength,High pressure 3.Low noise,low pulsation 4.Displacement: 40~100ml/r Hydraullic gear pump ... -iron body, Hi-resistant Die cast alluminum cover(BAP3.5), Low-friction die casting alluminum bushes,and DU slide bearing,all these ... keep low pulsation,low noise and long life.Full option of shafts,flanges ...