PTFE coating for oil Free Rotary Screw Air Compressor

Why rotor coating is important?

Rotor coating is critical to ensure the efficient operation of an oil free screw air compressor over a long period of time. Rotor coating helps with reducing the gap between rotors; sealing; protecting the rotors against high temperatures and corrosion; reducing friction of the air passing through the rotors during the compression process, reducing wear, and keeping energy consumption at a lower level.

In oil free rotary screw air compressors, there is no oil in the compressor chamber; really, there is nothing more than air in the compressor chamber. In other words, there is no oil to seal between the rotors, making the rotor coating extremely important. If you lose rotor coating on an oil free rotary screw air compressor, your compressor won’t be functional.

When the compressor operates in high temperatures, the rotor coating materials can begin to degrade. This is
the reason many compressor manufacturers using PTFE coating require the compressor to be installed and run in a stable operation of temperature and humidity (it really means at low temperature and low humidity). Otherwise, the rotor coating will potentially degrade.

Humidity and high temperatures are the two biggest enemies of the oil free rotary screw air compressors. To ensure that your compressor is going to be reliable, efficient and durable, you need to be sure about what kind of rotor coating is used on the air ends and on the housing of your oil free rotary screw air compressor. Remember and recognize that the most common damage in an oil free rotary screw air compressor is rotor coating degradation.

The cost of replacement is generally 50-65% of the cost of the equipment altogether, so we are highly encouraging you to contact us for selection of your air compressor coating! ☎