... no vibration.3. Long life. The blower bearing what we used are all double-row and Self-aligning bearing.4. High ... 2130rpm ZYSR series roots blower applicationsZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food,oxygen making,spinning ... ,V-belt cover,Blower Pulley,Motor Pulley,V-belt,Inlet Silencer(with air filter),Safety Valve,Pressure Gauge,Lubricating Oil,Anchor ...