The Micro Oil Screw Air Compressor uses two rotors (screws) that rotate in opposite directions. As the screws turn, air is drawn in and compressed. The oil injected into the system lubricates and cools the compressor element while also sealing the gap between the screws.
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[pdf] An internal diesel motor powers these portable compressors and they work in a similar way to electric compressors. The air inside the chamber of the tank is pressurized either by rotating impellers or by collapsing the air containment chamber, which will force the air to compress in a smaller space.
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