Common Bearing Failures 

Bearings are essential components in many industrial applications, ensuring smooth operation by reducing friction between moving parts. However, even the highest-quality bearings can fail if not properly maintained or used in the correct conditions. Understanding common bearing failures is key to preventing costly downtime and extending the life of your equipment, which is why the team here at Aire Bearings have created this informative article with both reasons why bearings fail, and what you can do to prevent it.

How To Prevent Bearing Failures

Preventing bearing failures requires attention to several critical maintenance and operating practices. Identifying potential risks early and implementing proper maintenance procedures can help you avoid unexpected breakdowns. At Aire Bearings, as reputable suppliers of industrial bearings, we have highlighted some simple ways you can improve the longevity and operation of your bearings: 

• Maintain optimal lubrication practices to reduce friction and manage operating temperatures effectively.
• Use high-quality seals and store bearings properly to minimise contamination from dirt, dust, and moisture.
• Ensure precise installation and perform regular alignment checks to distribute loads evenly and avoid misalignment.
• Select bearings appropriate for your application and adhere to load ratings to reduce fatigue-related damage.
• Follow manufacturer-recommended lubrication schedules and use the correct lubricants to prevent insufficient lubrication issues.
• Regular training for maintenance staff on the latest industry best practices can further enhance equipment reliability and reduce unexpected failures. By investing in staff education, businesses can proactively address common bearing-related problems.

By following these preventative measures, you can extend bearing life and reduce operational costs, ensuring that your machinery runs efficiently and reliably. If you would like more information on preventative maintenance for your bearings, check out our blog on this topic now.

Overheating

Overheating is one of the most frequent causes of bearing failure. It occurs when bearings operate at temperatures beyond their specified limits, causing lubricant degradation, increased friction, and material breakdown.

Common causes of overheating include excessive operating speeds, high loads, inadequate lubrication, and insufficient cooling. Signs of overheating include discolouration of bearing surfaces, increased noise levels, and even bearing seizure. Preventative measures include using the right lubricant, maintaining optimal speeds, and ensuring adequate ventilation or cooling systems.

Implementing temperature monitoring devices can provide early warnings of potential overheating issues, enabling timely intervention before major damage occurs.

Contamination

Contamination is another major factor contributing to bearing failures. External particles like dust, dirt, and moisture can enter the bearing housing, causing abrasive wear, corrosion, and reduced bearing efficiency.

Contamination typically results from poor sealing, improper storage, and exposure to harsh environments. To minimise contamination risks, use high-quality seals, store bearings in clean environments, and regularly inspect and maintain equipment to prevent foreign particles from entering the bearing assembly.

Installing protective covers and ensuring a clean work environment can further reduce the chances of contamination-related failures.

Misalignment

Misalignment occurs when the bearing shaft and housing are not properly aligned, causing uneven load distribution. This condition leads to increased friction, excessive vibration, and accelerated wear.

Misalignment can be caused by improper installation, worn-out components, or shaft deflection under heavy loads. To avoid this issue, ensure correct installation using precision tools like laser alignment devices. Regularly inspect components for signs of wear and adjust alignments as needed.

Creating a standardised installation checklist can help ensure proper alignment procedures are followed consistently, reducing the risk of misalignment.

Fatigue

Bearing fatigue, also known as spalling, happens when the bearing material deteriorates due to continuous cyclic loading over time. It results in cracks, surface flaking, and eventual bearing failure.

Fatigue is common in bearings subjected to high loads, excessive speeds, or harsh working conditions. To reduce the risk of fatigue, use bearings designed for your specific application, follow manufacturer load ratings, and implement a regular maintenance schedule to detect early signs of wear.

Consider upgrading to higher-performance bearings if operational demands exceed standard specifications.

Insufficient Lubrication

Lubrication is crucial for reducing friction and preventing metal-on-metal contact. Insufficient lubrication leads to increased friction, overheating, and even bearing seizures.

Causes of inadequate lubrication include using the wrong lubricant, applying too little or too much grease, or failing to maintain proper lubrication intervals. To prevent this, follow the manufacturer’s lubrication guidelines, use the recommended lubricants, and inspect lubrication systems regularly.

Automating lubrication processes through central lubrication systems can reduce human error and ensure consistent application.

Contact Aire Bearings Now to Find Out More

Understanding common bearing failures and their causes can help you maintain optimal equipment performance and reduce costly downtime. By implementing preventative measures such as proper lubrication, alignment, and contamination control, you can significantly extend the lifespan of your bearings. 

For expert advice, top-quality products – including taper bearings, thrust bearings, and needle bearings – and customised bearing solutions, contact Aire Bearings today. Our experienced team is ready to assist you with all your bearing needs and ensure your operations run smoothly and efficiently.