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Mechanical Breakdown When Moving Parts Stop Moving

Fig. 01 - Loss Example

Mechanically Seized

A compressor supporting the air conditioning system mechanically seized due to lack of refrigerant. While a replacement compressor was being located, temporary fans were purchased.

The Causes

Mechanical breakdown is the second most common form of equipment failure. It accounts for 30% of all equipment breakdown claims yet results in a disproportionate 40% of loss in terms of total cost. This is due largely to the types of equipment involved. Factors contributing to mechanical breakdown:

  • Lack of lubrication
  • Misalignment
  • Oil contamination
  • Operator error
  • Overspeed
  • Vibration

Where it Happens

  • Blowers
  • Compressors
  • Engines
  • Fans
  • Motors
  • Pumps

How it Happens

  • Bent components
  • Broken parts
  • Cracking of moving parts
  • Fracturing of moving parts
  • Seizing of moving parts


Simple steps can be taken to minimize the risk or impact of potential loss caused by mechanical breakdown.

  • Condition monitoring
  • Contingency planning
  • Proper lubrication
  • Routine maintenance
  • Trained operators

Partner Resources

For access to more tools, educational materials and information about equipment breakdown or our products and services, view our Partner Resources here.

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