Air End

Air End

An Air End (also called an airend or screw element) is the core compression unit in a rotary screw air compressor. It generates compressed air by meshing rotors and is critical to airflow output, efficiency, and stable operating temperature. When an air end wears, you may notice reduced CFM, higher oil carryover, abnormal noise, rising discharge temperatures, or longer loading times to build pressure.

FridayParts supplies replacement air ends and related service items for popular compressor lines such as Atlas Copco GA series, Ingersoll Rand UP6, and more (fitment depends on part number).

When to Replace an Air End

• Loss of pressure or flow under normal load
• Excessive temperature alarms or poor cooling performance
• Unusual bearing/rotor noise
• Increased oil consumption or contamination
• Maintenance history indicates high hours on the airend

If you’re unsure which air end fits your compressor, send your compressor model/serial and the OEM number from the nameplate or old unit—we’ll help confirm compatibility. For valves, fittings, cylinders, and other compressed-air hardware, browse our Pneumatic Parts category.