Certified Maintenance and Reliability Technician (CMRT) Practice Test 2025 - Free CMRT Practice Questions and Study Guide

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What is one of the risks associated with overheating a bearing?

Improved lubrication properties

Reduced friction

Increased wear and failure

Overheating a bearing primarily leads to increased wear and failure. When a bearing experiences excessive heat, it can alter the physical properties of the lubricant, which in turn diminishes its ability to properly lubricate the moving parts. This can result in higher friction and wear rates as the surfaces generate more heat, creating a feedback loop of increasing temperature and degradation. Additionally, overheating can cause changes in the material structure of the bearing itself, leading to premature fatigue, cracking, or total failure.

It is important to recognize that overheating does not lead to improved lubrication properties, reduce friction, or increase load-bearing capacity. In fact, these effects are detrimental and contrary to the goals of proper bearing operation. Maintaining optimal operating temperatures is essential for maximizing the lifespan and functionality of bearings in any machinery.

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Increased load-bearing capacity

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