Oilers/Plant Tenders (HHC) Civil Service Practice Exam

A lubricant that possesses high adhesion is less likely to do what?

1. To run out of a bearing

2. To cause friction

3. To attract contaminants

4. To oxidize

The correct answer is: To run out of a bearing

A lubricant with high adhesion is designed to maintain a strong bond to the surfaces it lubricates, providing a continuous film between moving parts. This characteristic is crucial for preventing the lubricant from being displaced or running out of bearings during operation. High adhesion ensures that the lubricant remains in the bearing even under conditions of high speed or load, which is essential for reducing wear and prolonging the lifespan of the components. While the other options relate to properties and effects of lubricants, they do not directly illustrate the role of high adhesion in preventing the lubricant from exiting the bearing. For instance, while high adhesion may contribute to reduced friction and possibly lower the buildup of contaminants, these are not the primary functions associated with the adhesive properties of lubricants. Additionally, the ability of a lubricant to oxidize is more related to its chemical stability and formulation rather than its adhesion characteristics.