Age-Based Efficiency Assumption
Facility planned equipment replacement based on age (8-year-old lines were considered for replacement), assuming newer equipment would improve efficiency. However, recent equipment data showed the opposite: oldest lines sometimes outperformed newest lines.
What Became Visible
Performance analysis by equipment age showed: 8-year-old lines averaged 87% OEE, 4-year-old lines averaged 82% OEE, 2-year-old lines averaged 85% OEE. Equipment age explained none of the variance. Maintenance discipline and operator skill explained everything: well-maintained older equipment outperformed poorly-maintained newer equipment.
Preventive Maintenance Emphasis
Instead of age-based replacement, the facility implemented preventive maintenance discipline: regular component inspection, proactive wear monitoring, and systematic bearing/seal replacement before failure. This transformed the oldest line from potential replacement candidate to top performer.
How it worked: Production intelligence showed that well-maintained equipment performed independent of age. Investment in preventive maintenance was more cost-effective than equipment replacement.
Results
via preventive maintenance
vs equipment replacement
capital cost avoidance
Equipment age is a weak predictor of performance. Maintenance discipline is a strong predictor. Well-maintained older equipment outperforms poorly-maintained new equipment.
Operational Reality
The facility's replacement plan was based on age assumption. Data showed maintenance methodology mattered far more than age. This shifted investment from capital equipment to preventive discipline.