... blowers are almost no vibration.3. Long life. The blower bearing what we used are all double-row and Self-aligning ... series roots blower applicationsZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food,oxygen making,spinning,paper making, ... compact unit include Common Base ,V-belt cover,Blower Pulley,Motor Pulley,V-belt,Inlet Silencer(with air filter),Safety ...