... we used are all double-row and Self-aligning bearing.11. The blower rotor is precision machined in its full surface ... .13. Widely used in many fields, especially in gas transportation, waste water treatment, aquaculture, pneumatic transport, vacuum packing, oxygen generation, ... ValvePressure GaugeCommon BaseBlower PulleyMotor PulleyV-belt CoverV-beltLubricating oil waste water treatment pump