Bearing Preservation Procedures

A complicated set of elements determine a bearing’s life, while SKF certifies that its life is random even when they are operating under identical conditions.

So what to do now? If the bearing application and design are correct, we cannot determine the life of the bearing. We suggest focusing on the essential care of the bearing and the equipment it is part of.

Let’s imagine that you have a large centrifugal pump. You can preserve the life of the bearings by:

  • Use of correct bearing specification according to OEM
  • Store and mount the bearing correctly
  • Make sure that shaft and bearing housing have the correct tolerance
  • Operate the equipment within its limits and avoid overload and cavitation
  • Align the shafts and couplings within
  • Balance impeller to avoid vibration
  • Select and use the correct lubricant/oil
  • Make sure that the oil is clean and avoid moisture, chemicals, and contaminants
  • Make sure that the oil is not breaking down and keeps properties and additives
  • Prevent overheating of the pump

If we implement procedures to preserve the conditions of the bearings, we have maximised the bearing life and reliability.

Now we need to figure out what procedures are needed when the bearing begins to fail and its condition deteriorates. Predicting when the bearing is failing is not extending the life of the bearing but giving us a time plan and schedule downtime when it impacts the operations the least.

Based on the criticality and industry, we could use the condition monitoring standards (CMS by IDCON) or we could use FMEA and RCM to determine the condition monitoring procedure. How often should you measure? Let’s save that for another time since the life of the bearing does not change when we do condition monitoring.

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