Glossary
What is Condition-Based Maintenance?
Condition-based maintenance (CBM) is maintenance triggered by the measured or observed condition of an asset rather than a fixed time or usage schedule. Work is performed when condition indicators—such as vibration, temperature or oil quality—exceed thresholds.
What it means
CBM aims to do maintenance only when needed, based on actual asset condition. It can reduce unnecessary PM and catch problems before failure.
Why it matters
- CBM uses condition data (sensors, inspections, tests) to decide when to act.
- It can reduce over-maintenance and target resources where they are needed.
- Implementation may require sensors, data collection and clear thresholds.
- CBM is related to predictive maintenance; both are condition-driven.
Example in maintenance operations
Replacing a bearing when vibration levels exceed a limit; changing oil when analysis shows contamination; repairing a belt when visual inspection finds wear.
Related concepts
Frequently asked questions
What is the difference between condition-based and predictive maintenance?
Both use condition data. Predictive maintenance often implies forecasting failure (e.g. 'failure in 2 weeks'); condition-based maintenance means acting when a condition threshold is exceeded.
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