The air end is the heart of a screw compressor. With correct maintenance it runs for tens of thousands of hours, but eventually bearings and rotors wear and an overhaul becomes necessary.
Signs an Overhaul Is Due
- Rising vibration and noise.
- Falling free air delivery at the same power.
- Increasing oil carryover or metal in the oil sample.
What the Overhaul Involves
- Replacing bearings, seals and worn clearances.
- Inspecting and, if needed, recoating or replacing rotors.
- Reassembly and testing to restore performance.
Overhaul vs Replace
- Overhaul is cost-effective for large machines.
- Small air ends are often replaced outright.
- Compare the quote with a new machine cost.
How many hours does an air end last?
Typically 40,000–60,000 hours or more with proper oil and filter maintenance.
Talk to an Engineer
Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.