9 Sep

Lubricate and Increase Your Circulator Pump’s Life Cycle

By Dez Duran-Lamanilao

Lubricants usually tend to limit the high temperature operation of ball and roller bearings, which are mostly used on centrifugal pumps; larger size pumps require different bearing specifications. Optimizing your bearing lubrication increases the efficiency of your machinery.


A chamber metering valve meters grease onto the break.

Source: DOPAG

Below are the types of bearing lubrication:

  • Mineral or synthetic based – designed for general and high-speed use (the most commonly used type)
  • Silicon – have wide temperature ranges
  • Perfluorinated lubricants (PFPE) – highly resistant to many chemicals
  • Dry – used in vacuum environments where standard lubricants may cause contamination
  • Dampening greases – widely visible in automotive parts
  • Food grade lubricants – required for the food and beverage industry to conform with hygiene regulations

Lubrication performs many functions, which may include:

  • Separates rolling and sliding contact surfaces to prevent interlocking or inter joint welding
  • Protects highly finished bearing surfaces from corrosion
  • Protects against contaminants
  • Acts as a heat-transfer medium, thus reducing energy loss
  • Reduces surface deformation, wear and tear
  • Increases the smooth motion of moving targets

You can further increase bearing life by observing the following:

  • Regularly monitor lubricant condition.
  • Install dehumidifiers if needed.
  • Hermetic sealing of the bearing housings with magnetic shaft seals and closed system oilers to keep out moisture and dirt
  • Observe effective storage and proper handling to prevent abrasive dirt from entering the lubricant.
  • Use only approved grades of oil or grease.
  • Use synthetic lubricants. In applications with either extremely high or low temperatures or very heavy loads, synthetic oils/greases may cause improved thermal stability, improved oxidation resistance, and lower evaporation losses as compared with non-synthetic lubricants.

Studies have demonstrated that almost half of all equipment or component failures in plants are a result of lubrication issues. Installing an ISO-approved lubricant is the best way to start a company’s lubricant management process. Leave the installation to the experts in the field. Their vast experience and knowledge alone will be instrumental in improving the life cycles of your pumps.

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