... 2.high efficiency 3energy saving blower machine 4high rising pressure pump 5.stable operation, long life 1. Low noise, due ... Long life. The blower bearing what we used are all double-row and Self-aligning bearing.11. The blower rotor is ... , especially in gas transportation, waste water treatment, aquaculture, pneumatic transport, vacuum packing, oxygen generation, etc. 14.Oil tank: after milling they ...