Under which of the following mechanisms the bearing performance depends on the ability of the lubricant to maintain a boundary film under load?

Correct Answer: Boundary film lubrication
The mechanism in which part of the entire load is also carried by the sliding contact between the bearing and the shaft furnaces, which is separated by a thin film of lubricant is known as boundary film lubrication. In this case, the bearing performance depends on the ability of the lubricant to maintain a boundary film under load.