Difference Between Preventive and Predictive Maintenance
Predictive maintenance tends to include direct measurement of the item. Example, an infrared picture of a circuit board to determine hot spots.
While Preventive Maintenance includes the evaluation of particles in suspension in a lubricant, sound and vibration analysis of a machine.
An example below:
You have bought a incandescent light bulb. The manufacturing company is telling you that the life span of the bulb is 3 years. So just before expiring 3 years you have decided to replace the bulb with a new one and scheduled for a maintenance. This is called preventive maintenance.
However, everyday you have the opportunity to observe the bulb operation. After two years, the bulb starts flickering. So you are predicting at that time that the bulb is going to fail very soon and deciding to change with a new one and scheduled for a just-in time maintenance. This is called predictive maintenance.
Read more about this topic: Preventive Maintenance
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