So, how long should bearings last?

While circumstances vary, best practices suggest bearings should last eight to 12 years if properly maintained


A guideline designed to show you how long bearings should last and when the ideal time to replace them is. Courtesy: Allied GPAs stated in the main article, bearings are sometimes replaced when they are still perfectly functional. This is partly because many maintenance personnel do not understand how long a bearing should reasonably be expected to last, presenting a formidable barrier to reliability and optimization. Were you to ask a roomful of professionals, “How long do bearings last?” you would get a wide variety of answers, ranging from a couple of years to indefinitely.

When properly maintained, most bearings should last approximately eight to 12 years. Bearing lifespans are represented through a concept called the L10 life.

The L10 life is the age to which approximately 90% of bearings of a sufficiently large population under similar conditions will survive. The “10” in L10 refers to the 10% of bearings that will not reach the L10 life.

The life of a bearing should be approximately five times the calculated L10 life (again, as a solid rule of thumb, usually around eight to 12 years). Check your manufacturer’s specifications for further information and to get a better idea of how long your bearings should reasonably last.


Andy Page is a principal with GP Allied. For more information, resources, and solutions regarding subsurface fatigue and other ways bearings fail, visit or 


- See main article below discussing bearing failure and what to look for.

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Make Big Data and Industrial Internet of Things work for you, 2017 Engineers' Choice Finalists, Avoid control design pitfalls, Managing IIoT processes
Engineering Leaders Under 40; System integration improving packaging operation; Process sensing; PID velocity; Cybersecurity and functional safety
Mobile HMI; PID tuning tips; Mechatronics; Intelligent project management; Cybersecurity in Russia; Engineering education; Road to IANA
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Flexible offshore fire protection; Big Data's impact on operations; Bridging the skills gap; Identifying security risks
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
click me