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Screw air compressor rotor | Air Equipment

Screw Compressors

Screw compressors are often the most appropriate type of compressor for medium to high volume industrial applications


Screw compressors are the most common type of compressor found in medium to large sized industrial businesses today. They are efficient, low noise and reliable making them the most popular choice of large air compressor for industrial use. They have few moving parts and there is little metal to metal contact so giving them excellent durability. A typical screw compressor will operate for 5 to 10 years or more with only regular maintenance. Today most screw compressors come with integrated electronic controllers that improve the efficiency of the operation of the compressors as well as record faults and warning of errors or faults in the compressor. The controller gives a good degree of security to the machine. Normally compressors will shut down on a fault rather than allowing the machine to run on exposing itself to potential damage risk.


Screw compressors were first introduced in the 60’s and 70’s to replace the large piston compressors of the day. They are efficient, low noise and reliable. Large manufacturers have invested huge amounts in the development of screw compressors so today there are several different types available including oil lubricated, water lubricated and oil free versions the latter being suited for food or pharmaceutical use.


Modern machines often incorporate dryers or receivers within the package which is normally contained within a frame.


In recent years screw machines have become available with variable speed drives and digital controllers that enable machines to turn down their output to match demand, saving considerable amounts of energy


Benefits – High efficiency, Low noise, Long life

Downsides – Can be expensive to buy initially