Which factor does not contribute directly to OEE?

Overall Equipment Effectiveness (OEE) is a key metric used to assess the efficiency of a manufacturing operation. It combines three factors: availability, performance, and quality.

Availability measures the time that the equipment is actually available for production versus the total scheduled time. Performance assesses the speed at which the equipment operates relative to its potential maximum speed, essentially evaluating productivity. Quality focuses on the percentage of produced items that meet quality standards versus the total items produced, reflecting the effectiveness of the production process.

The maintenance cost does not directly influence the OEE metric itself. While maintenance can impact availability (if equipment breaks down, it affects how often it can be in operation), the actual costs associated with maintenance are not a factor in the OEE calculation. Instead, OEE looks strictly at how effectively equipment is used in terms of time, speed, and quality.

By understanding these components, one can see that availability, performance, and quality are integral to calculating OEE, while maintenance costs, although important to the overall health of the production process, are not included in this specific metric.