Atlas® 5 HP, 80G Rotary Screw Air Compressor

Product Code: #ATAF-RS-1
Greg Smith Equipment is the exclusive dealer for Atlas® line of Rotary Screw air compressors. These Atlas® rotary screw air compressors are built in the USA and incorporate one of the most reliable, high performance air ends in the Industry. These Atlas® rotary screw air compressor may be ordered in a variety of configurations to best accommodate your air supply requirements.

Piston vs Rotary Screw Comparison

Reciprocating Air Compressors

Reciprocating air compressors are positive displacement machines, meaning that they increase the pressure of the air by reducing its volume. This means they are taking in successive volumes of air which is confined within a closed space and elevating this air to a higher pressure. The reciprocating air compressor accomplishes this by a piston within a cylinder as the compressing and displacing element.

Load reduction is achieved by unloading individual cylinders. Typically this is accomplished by throttling the suction pressure to the cylinder or bypassing air either within or outside the compressor. Capacity control is achieved by varying speed in engine-driven units through fuel flow control.

Reciprocating air compressors are available either as air-cooled or water-cooled in lubricated and non-lubricated configurations and provide a wide range of pressure and capacity selections.

Rotary Screw Compressors

Rotary air compressors are positive displacement compressors. The most common rotary air compressor is the single stage helical or spiral lobe oil flooded screw air compressor. These compressors consist of two rotors within a casing where the rotors compress the air internally. There are no valves. These units are basically oil cooled (with air cooled or water cooled oil coolers) where the oil seals the internal clearances.

Since the cooling takes place right inside the compressor, the working parts never experience extreme operating temperatures. The rotary compressor, therefore, is a continuous duty, air cooled or water cooled compressor package.

Rotary screw air compressors are easy to maintain and operate. Capacity control for these compressors is accomplished by microprocessor, variable speed drive, or analog controls. Advantages of the rotary screw compressor include smooth, pulse-free air output in a compact size with high output volume over a long life.
Atlas® 5 HP, 80G Rotary Screw Air Compressor Specifications
Motor Running5 Horsepower
Delivered-CFM 125PSI18
Tank Capacity80 Gal.
Air Outlet Size2" NPT
Motor Voltage220V/Single Phase
Magnetic StartNEMA 1 Full Voltage
CompressorRotary Screw Type
  • Magnetic Starter
  • Auto Drain
  • Air Aftercooler
  • Oil Temperature Gauge
  • Motor Overload Protection
  • 2 Year Motor and Air End Warranty
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