... and long life 2.Strength,High pressure 3.Low noise,low pulsation 4.Displacement: 40~100ml/r Hydraullic gear ... bushes,and DU slide bearing,all these keep low pulsation,low noise and long life.Full option of shafts, ... A: Yes. We provide a free sample for new customer,but the freight cost must be paid ... , Mexico, Argentina, Brazil Group 3.5 Low Noise and High Pressure Hydraulic Pump for Heary Industrial