... couplingCooling typeAir currentWeight3560kg Structure: 1 Using the involute type line to the impeller, high efficiency, excellent ... material, long lifespan, low noise. 2 With forced lubricant, then high boost, high precision ... of main parts, gear with high five level of accuracy and reliable operation. 4 Compact ... sightDelivery time: within two weeks 2 lobe ROOTS type BLOWER