The Fundamental Production Capacity Formula
Theoretical Production Capacity Formula
Production Capacity = Available Production Time ÷ Cycle Time per Unit
Practical Factory Calculation Example:
- A precision stamping press operates 1 shift of 8 hours per day.
- Total available operating time = 8 hours × 60 minutes = 480 minutes.
- Standard engineering cycle time = 2 minutes per unit.
- Theoretical daily capacity = 480 ÷ 2 = 240 units per day.
Theoretical Capacity vs. Effective Realistic Capacity
In actual plant operations, real-world output rarely equals theoretical maximums. Unplanned downtime, tool changeovers, operator tea breaks, scrap parts, and quality inspection queues reduce real-world throughput.
The Bottleneck Principle (Theory of Constraints)
Total plant output is strictly governed by the slowest workstation (the bottleneck). Adding high-speed CNC machines upstream does not increase delivery rates if the downstream powder coating line has reached 100% capacity.
Production & Plant Control
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