Lubrication regimes in sliding bearings: terminology check Statement to evaluate: “A sliding bearing in which the working surfaces are completely separated by lubricant is called a zero film bearing.” Decide if the statement is correct or incorrect.

ConceptWhen the journal and bearing surfaces are completely separated by a lubricant film, the bearing operates in hydrodynamic (full-film) lubrication. The term zero-film implies the opposite—no separating film (boundary or mixed lubrication).

ReasoningTherefore, calling a fully separated condition “zero film bearing” is incorrect; it should be called a full-film (hydrodynamic) bearing.

Final AnswerIncorrect (False)