What is OEE?
Overall equipment effectiveness is a maintenance KPI that measures an asset’s level of productivity. OEE is a combination of three factors that tell you how efficient an asset is during the manufacturing process: asset availability, asset performance, and production quality.
1. Availability – How often does the asset function when needed?
2. Performance – How much does the asset produce?
3. Quality – How many high-quality items does the asset produce?
When an asset operates with an OEE of 100%, it means that every item it produces is without defect (quality), it is producing as fast as possible (performance), and it experiences no unplanned downtime (availability).
OEE Factors :
OEE Calcutation Formula :
OEE = Availability (A) × Performance (P) × Quality (Q)
Benchmarking OEE :
Ideal Availability 90% Normal 79%
Ideal Performance 95% Normal 80%
Ideal Quality 99.9% Normal 95%
Ideal OEE 85% Normal 60%
How is OEE used?
Overall equipment effectiveness is an indicator of how efficient the manufacturing process is. It can be used to identify underperforming assets and connect poor performance with one or more of the three main factors (availability, performance and quality). Once the source of the problem is pinpointed, the underlying issues can be investigated and improved.
Six Big Losses :
