TYPE: rotary type Main features: compact size, low noise,ingenious structure,stable air flow,excellent performance Blower Model ... voltage: 380V,400V,415VFrequency: 50Hz,60Hz About HC-S: The HC-S series rotary blower features high quality construction, and includes ... lube oil tank) and oil dropping nozzle. Main Features: Low noise, low power consumptionResist load variation ,stable air flow and easy ...