OEE (Overall Equipment Effectiveness) is a key performance indicator (KPI) used to measure the actual performance of machines and production lines, considering availability, performance, and quality.
OEE objectively shows how much of a machine’s total capacity is being effectively utilized to produce good parts, within the planned time.
📊 OEE Formula
OEE is the product of three fundamental factors:
[ text{OEE} = text{Availability} times text{Performance} times text{Quality} ]
| Factor | How it is calculated | What it represents |
|---|---|---|
| Availability | Operating time / Planned time | Planned and unplanned stops |
| Performance | Ideal cycle × Quantity produced / Actual time | Slowness, micro-stops, mechanical efficiency |
| Quality | Good quantity / Total quantity | Rejected parts, rework, failures |
🎯 Objectives and Benefits of OEE
- 📈 Identify hidden production losses
- 🔍 Locate bottlenecks and sources of inefficiency
- 📊 Measure the impact of stops, defects, and slowness
- 🛠️ Support continuous improvement actions (PDCA, Lean, TPM)
- 💡 Guide decisions on investment, maintenance, or automation
🧩 Practical Applications
- Real-time monitoring of automated lines
- Efficiency assessment of test benches or assembly cells
- Tracking by shift, product, operator, or equipment
- Cross-analysis with KPIs like FPY, CPK, MTTR, MTBF
- Connectivity with systems SCADA, MES, ERP or web dashboards
🔧 How AJOLLY Testing Supports Your Project with OEE
AJOLLY Testing offers complete solutions for automatic OEE data capture, directly from test systems, PLCs, instruments, and production stations.
📡 Automatic Data Collection
- Integration with sensors, relays, PLCs, gateways, or test systems
- Capture of cycle signals, start/stop, approved and rejected parts
- Accurate measurement of cycle times, downtime, and quantity produced
🧠 OEE Calculation and Visualization
- Automatic processing of availability, performance, and quality factors
- Real-time display by station, line, or operator
- Industrial dashboards with alarms and efficiency targets
📁 Recording and Traceability
- OEE storage by serial number, batch, product, or shift
- Automatic reports with trend graphs and loss causes
- Data export to Excel, PDF, SQL, or corporate systems
🔗 Integration with Higher Systems
- Communication with SCADA, MES, ERP, Power BI or Grafana
- APIs for integration with maintenance, logistics, or quality control solutions
- Support for Industry 4.0, IIoT, and shop floor digitalization
With AJOLLY Testing, OEE ceases to be an estimated number and becomes a reliable, automated, and actionable indicator, ready to guide production and testing efficiency.