Instrukcje krok po kroku
Gather Your Inputs
First, identify the operating time, total time, total output, ideal output, good output, and total output for the period you want to calculate the OEE for. Ensure all times and outputs are in the same units.
Calculate Availability
Next, calculate the availability by dividing the operating time by the total time and multiplying by 100. For example, if the operating time is 480 minutes and the total time is 600 minutes, the availability would be (480 / 600) × 100 = 80%.
Calculate Performance
Then, calculate the performance by dividing the total output by the ideal output and multiplying by 100. For instance, if the total output is 400 units and the ideal output is 500 units, the performance would be (400 / 500) × 100 = 80%.
Calculate Quality
After that, calculate the quality by dividing the good output by the total output and multiplying by 100. If the good output is 380 units and the total output is 400 units, the quality would be (380 / 400) × 100 = 95%.
Calculate OEE
Finally, calculate the OEE by multiplying the availability, performance, and quality. Using the previous examples, OEE = 80% × 80% × 95% = 0.8 × 0.8 × 0.95 = 0.608 or 60.8%.
Interpret Your Results and Consider Using a Calculator
Compare your OEE result to world-class benchmarks. Generally, a score of 85% or higher is considered world-class. For convenience and to avoid common mistakes such as calculation errors, consider using an OEE calculator for regular assessments.
Introduction to OEE
The Overall Equipment Effectiveness (OEE) is a measure of how well a manufacturing process is performing. It takes into account three key factors: availability, performance, and quality. In this guide, we will walk you through the steps to calculate OEE manually and provide a worked example.
Understanding the Formula
The OEE formula is: OEE = Availability × Performance × Quality Where:
- Availability = (Operating Time / Total Time) × 100
- Performance = (Total Output / Ideal Output) × 100
- Quality = (Good Output / Total Output) × 100