Product Variant Performance Mystery
Facility tracked overall OEE but not product-level performance. Analysis of quarterly reports showed overall 78% OEE. When disaggregated by product variant: Variant A achieved 88%, Variant B achieved 78%, Variant C achieved 68%. This 20-point spread was unexplained and unaddressed.
What Became Visible
Product-level performance analysis revealed: Variant A had simple changeover (5 min), high first-pass yield (98%), minimal micro-stops. Variant C had complex setup (25 min), 5% rework rate, frequent sensor conflicts. The variants required fundamentally different operational approaches.
Product-Specific Optimization
Instead of one-size-fits-all procedures, the facility implemented product-specific protocols: Variant C received dedicated setup procedures, enhanced quality verification, and sensor-tuning guidance. This didn't make Variant C as efficient as Variant A, but improved Variant C from 68% to 80% OEE.
How it worked: Product-level visibility enabled targeted optimization. Each variant received attention proportional to its complexity and impact.
Results
optimized within variant constraints
from product-mix optimization
Product-variant efficiency variance indicates product-specific process requirements. One-size-fits-all improvement leaves performance on the table.
Operational Reality
The facility didn't optimize all variants to the same level—some variants' complexity made 88% OEE unrealistic. Targeted product-level optimization accepted realistic constraints while capturing achievable gains.