How can excessive application of lubricant negatively impact machinery?

Excessive application of lubricant can lead to overheating due to a phenomenon known as "oil hydrodynamics." When too much lubricant is applied, it can create a layer that is too thick for the machinery to operate efficiently. This thick layer can interfere with the normal movement between components, increasing friction instead of reducing it. As the friction increases, it generates unnecessary heat, leading to overheating. Overheating can cause various issues, such as the breakdown of the lubricant itself, which can diminish its protective properties, and it can also damage the machinery components due to thermal expansion and other related stress factors.

In contrast, preventing corrosion, enhancing efficiency, and reducing wear and tear are generally viewed as benefits of proper lubrication levels, but excessive lubrication can disrupt these benefits, leading to decreased overall performance and increased maintenance issues. Therefore, maintaining the correct amount of lubricant is crucial for the optimal functioning of machinery.