OEE BASICS
OEE: Availability, Performance, and Quality
Overall equipment effectiveness combines availability, performance, and quality into one diagnostic percentage.
SHORT ANSWER
Start with the inputs you can verify
Overall equipment effectiveness combines availability, performance, and quality into one diagnostic percentage.
What the estimate means
Availability reflects run time losses, performance reflects speed losses, and quality reflects rejected output.
Multiplying the three factors prevents a strong result in one area from hiding losses in another.
Where estimates go wrong
Use a consistent definition of planned production time and good count across shifts.
Keep the source measurements and assumptions with the result so another person can review or update the estimate later.
A practical workflow
- Agree the measurement boundaries.
- Calculate each factor from traceable source data.
- Investigate the largest loss category instead of treating the final percentage as the answer.