Oil carryover is the oil mist that leaves a lubricated compressor with the compressed air. It is measured in parts per million and is a key indicator of separator condition.
What It Is
- Oil-injected compressors always carry a trace of oil in the air.
- The separator removes most of it before discharge.
- Typical levels are 3 ppm or less in a healthy machine.
How It Is Measured
- Air is sampled and the oil collected and weighed.
- Results are reported in mg of oil per cubic metre.
- Rising carryover signals a saturated separator.
Why It Matters
- High carryover contaminates the air and product.
- It increases oil consumption and maintenance cost.
- Applications needing clean air require filtration or oil-free machines.
What is the normal oil carryover for a screw compressor?
A well-maintained screw compressor typically delivers 3 ppm or less.
Talk to an Engineer
Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.