When the bearings get stressed beyond their calculated fatigue life due to tight inner-ring fits, excessive preload, and constant overloading, they will be fatigued, and you will get what’s known as “spalling.”

When foreign substances get into the cleaning solutions or bearing lubricants, you’re going to end up with contamination and failure. These include dust, dirt, steel chips, and grip from work areas and dirty tools.

Bearingworn out meaning

Keep an eye out for excessive vibration caused by raceways and denting of rolling elements. Keep the work area clean and filter lubricants to reduce contamination.

Misalignment is caused by out-of-square spacers, shaft shoulders, and clamping nuts, bent shafts, and improper installation, which can result in separator failure and overheating.

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Keep an eye out for deformed or discolored bearing parts, cages, rolling elements, and rings. The best way to mitigate or avoid overheating is to use overload controls or supplemental cooling systems.

Bearingfailure types

Another common cause of bearing failure is putting too heavy of a load on them consistently. You can detect this if there is evidence of equipment overheating, wear paths on rolling elements, and fatigue on parts.

Too much moisture, condensation from too many temperature reversals, broken-down or low-quality grease, and inadequate wrappings can lead to corrosion of the bearing’s finished surfaces. This is evidenced by brown or red deposits or stains on raceways, rolling elements, or cages, as well as more wear and vibration in the machinery.

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Corrosive materials need to be diverted away from bearing areas. If you can’t avoid this, use stainless steel bearings or bearings that have internal or external seals to protect them from harsh environments.

Overheating is never good for your bearings. It is the result of operating equipment at excessive temperatures and/or having improper lubrication. When you operate at elevated temperatures, the grease will bleed, which lessens the efficiency of your lubrication. Under these conditions, you can get oxidation, which will eventually result in seized bearings. Operating at high temperatures can also make the metal softer, which leads to the early failure of parts.

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If your bearings have failed, there’s a good chance it’s due to improper lubrication. This includes using the wrong lubricants, not having enough lubrication, and operating at excessive temperatures that quickly degrade lubrication.

Types ofbearingfailures and their causes

Bearingfailure symptoms

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Bearing failure happens when a bearing doesn’t meet expected performance levels or can’t make it to the end of its expected useful life. When a bearing fails, this often causes the machine shaft and the machine itself to fail.

Bearingfailure reasons

You can determine this by examining the running surfaces for fractures or looking for small particles of material on rolling elements or the inner or outer rings. This is a progressive condition that will get worse with continued operation. If not fixed, you will notice an increase in noise and vibration from machinery.

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Bearingfailure effects

The best way to address this is to replace the bearing. You can prevent the issue by using a high-quality bearing with better internal clearances, longer fatigue life, and the correct housing and shaft recommendations.

Absorb or eliminate external vibrations that could cause movement in the bearings when the machine isn’t operating. Also, make sure you are using lubricants that contain anti-wear additives.

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Bearing failure is a serious event because it can lead to unexpected downtime, high maintenance costs, injured workers, missed deadlines, and loss of revenue. Obviously, bearing failure can negatively impact your business, so it’s something you want to avoid.

If bearings aren’t mounted to the rotating ring with a press fit, this could lead to failure. If they aren’t mounted correctly, you’re more likely to experience cracked rings, premature wear, denting, and high operating temperatures.

Inspect housings and shafts to identify uneven wearing and any runout of bearing seats and shoulders, and use precision-grade locknuts.

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What is the most common cause ofbearingfailure

You can experience electrical damage to your bearing if there is a constant or alternating current. If this is happening, you might notice brown-colored marks on the raceway that are parallel to the axis or across the entire raceway.

The lubrication in your bearings can wear away quickly when the balls in the raceway move rapidly while the equipment is idle. If the bearing isn’t rotating, fresh lubricant can’t enter it. False brinelling is the result of either condition.

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Whether your business has ever experienced a bearing failure or wants to make sure it never happens, one of the best ways to avoid it is to understand the common causes.

Bearingfailure analysis PDF

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? ECORES WIND is set to make significant strides in the wind energy sector by advancing the development of sustainable materials and processes. ? Wind farms have a finite operational lifetime. For the oldest wind farms this is typically in the area of 15 – 25 years. As the European wind turbine fleet ages, a solution for EoL is paramount. Many of Europe’s onshore wind farms are approaching the end of their planned operational lifetime. ? The key objective of ECORES WIND is the development of circular resin systems that enhance the recyclability and sustainability of wind turbine blades and incorporation of advanced disassembly strategies to ensure that wind turbine blades can be decommissioned, and their materials reused efficiently. Read more about our initiative here: https://lnkd.in/dJW8JvrD #HorizonEU #ECORESWIND #resins #composites #circularity #windblades #windenergy #sustainability This project has received funding from the European Union’s Horizon Europe research and innovation programme under Grant Agreement No. 101148066.

Look for rolling elements that are discolored, such as brown or black, or excessive wear on the bearings. Make sure you use the right type and appropriate amount of lubrication, and keep a regular maintenance schedule.

Mount bearings correctly according to the instructions and train employees in recognizing the difference between a properly and improperly installed mount.

Properly operating bearings keep machinery and processing moving and working efficiently. These are often overlooked parts, but they can cause a great deal of trouble when they fail. Here is what happens with bearing failure, some of the most common causes of it, and how you can prevent it from happening on your watch.