July 20, 2025

The definition of bearing life

The Definition of Bearing Life

Source: China Bearing Network | Time: 2013-04-14

The term "bearing life" refers to the number of revolutions a rolling bearing can complete, or the number of hours it can operate at a specific speed before fatigue damage begins. This is typically defined as the point at which any of the bearing's components—such as the inner or outer ring, or the rolling elements—start to show signs of wear, cracking, or material loss. In laboratory settings or real-world applications, this stage may not always be immediately visible but is generally recognized when performance starts to degrade. It's important to note that the actual lifespan of a bearing can vary significantly depending on several factors, including operating conditions, load, speed, lubrication, and maintenance practices. There are different types of "life" associated with bearings. One is called "operating life," which refers to the actual service life a bearing achieves before failure due to wear, contamination, seal damage, or other non-fatigue-related issues. Understanding the concept of bearing life is crucial for engineers and technicians involved in machinery design, maintenance, and reliability. Proper selection, installation, and regular inspection can help extend the life of a bearing and prevent unexpected failures.
Related Bearing Knowledge
  • Classification of Basic Shapes of Bearing Failures
  • Characteristics of Joint Bearings in Squeezing Machines
  • Methods for Extending Bearing Life – Key Techniques
  • Radial and Thrust Bearings: Series and Terminology

This article is sourced from China Bearing Network. For more information, please visit: [China Bearing Network](http://www.chinabearing.net) Previous: Correct Application and Maintenance of Road Repair Machinery – Radial Clearance and Axial Clearance Selection Criteria

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