What is the most common cause of bearing failure?

The most common cause of bearing failure is often linked to lubrication issues. Proper lubrication is essential for the effective operation of bearings as it reduces friction and wear between moving components, thus extending their lifespan. Inadequate lubrication can lead to metal-to-metal contact, increased heat generation, and ultimately, premature wear or damage to the bearing surfaces.

Moreover, improper lubrication techniques, such as using the wrong type of lubricant, incorrect application, or insufficient lubricant quantity, can significantly affect a bearing's performance. For example, too little lubricant does not provide adequate protection, while too much can result in increased operating temperatures and loss of efficiency.

While overheating, improper installation, and material fatigue are significant factors contributing to bearing failures, many cases are directly or indirectly tied to lubrication. Ensuring that bearings are adequately maintained and lubricated is vital in preventing failures and achieving optimal reliability in machinery.