... are almost no vibration.3. Long life. The blower bearing what we used are all double-row and Self-aligning ... efficiency, so it is energy-saving. The blower rotor adopted the advanced Composite curve, the meshing is more reasonable, and further ... ZYSR series roots blower applicationsZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food,oxygen making,spinning, ...