Overall Equipment Effectiveness
OEEA metric that measures manufacturing productivity by multiplying three factors: Availability (uptime), Performance (speed), and Quality (good units produced). An OEE score of 85% is considered world-class, while most manufacturers operate between 60-70%. OEE identifies losses and improvement opportunities in equipment utilization.
RELATED TERMS
Cycle Time
The total elapsed time required to complete one unit or one cycle of a production process from start to finish. Cycle time includes processing time, wait time, and move time, and is a critical metric for capacity planning, scheduling, and identifying improvement opportunities.
Downtime
Periods when equipment or production lines are not operating, whether due to breakdowns, changeovers, maintenance, or lack of materials. Downtime directly impacts productivity and OEE, making its reduction a primary focus of maintenance and operations improvement efforts.
Throughput
The rate at which a manufacturing system produces finished goods, typically measured as units per hour or per shift. Throughput is determined by the system's bottleneck operation and represents the actual productive output that generates revenue.
First Pass Yield
The percentage of units that pass quality inspection without requiring rework, repair, or scrapping on the first attempt. First pass yield measures process capability and quality, with higher yields indicating more efficient operations and lower costs of poor quality.
Capacity Utilization
The percentage of available production capacity that is actually being used to produce goods. Capacity utilization helps managers understand how efficiently resources are being employed and whether additional capacity is needed or if existing capacity could handle more volume.
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