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Environmental influences – Dust, dirt, media, water, and unwanted heat can all contaminate your bearings if they’re not properly sealed. Depending on the application, a bearing may require insulation to prevent electrical currents and sparks. Be mindful of outside factors that could interfere with your specific application and be aware of precautions you could take to prevent such problems.

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Types of bearingfailures

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Mounting and installation of bearings – It is crucial to use proper tools and heaters during the mounting process. If mounting pressure is applied to the wrong ring during installation, particularly with self-aligning bearings, the raceways and rolling elements can become dented. If the fit is too loose, tight, or misaligned, the preload weight will be skewed and could cause the shaft to rotate or creep.

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Bearing failure Chart

Improper lubrication – Lubrication enhances function and prolongs bearing service life, but only if done correctly. Too much or too little grease, mixed lubricants, and contamination can all have adverse effects on the bearings. Lubricated bearings also have a “grease service life,” which is a state of optimal function between lubrications. If an engineer neglects to reapply lubrication when this time expires, the bearing can fail.

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Bearing failure reasons

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Precision bearings are industrial components that carry loads in a variety of applications. Roller bearings, which operate with rolling elements such as balls or rollers in a raceway, are reliable and durable. In fact, more than 99% of rolling bearings reach their projected service life, even in the toughest conditions.

Bearing failure analysis PDF

If you'd like to learn how bearings are being used in yourindustry, check out our Industry Solutions page which hasdozens of eBooks, charts and data sheets.

The accurate diagnosis of a bearing failure is imperativeto prevent repeated failures and their additional expenses.This comprehensive guide to bearing failures outlines themany ways bearings can and do fail.

Operational stress and bearing selection – Although roller bearings are generally reliable, the overall application they work within may change over time. If the load within an application becomes too high or too low, bearings could fatigue or skid, respectively. Warning signs of these failures include rising temperatures and unusual noises.

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What is the most common cause of bearing failure

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Considering different bearing technologies and identifying the one most suitable to your specific application is the first step in the prevention of bearing failure. By keeping these causes and their warning signs in mind, you can proactively make corrections to avoid premature failures and additional costs.

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Bearing failure effects

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Emerson Bearing has over 50 years of ball and roller bearing expertise. We serve original equipment manufacturer (OEMs) and maintenance markets around the world to help customers find the right bearing at the right price. To learn more about the causes and cures of premature bearing failure, we invite you to read our eBook, “Bearing Failure Analysis.”

Types of bearingfailuresand their causes

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A rolling element rotary bearing uses a shaft in a much larger hole, and spheres or cylinders called "rollers" tightly fill the space between the shaft and hole ...

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Bearing failure symptoms

While only a small percentage of such bearings fail, this premature failure can be caused by a number of factors. Flaking, pitting, spalling, rusting, corroding, creeping, and skewing can all lead to failure; each concern stems from a small group of interrelated and preventable causes. Some of the most common ones include:

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