Bearings: definition of a hydrodynamic (full-film) lubricated journal bearing Identify the correct statement describing film formation and pressure generation in hydrodynamic lubrication. Choose the correct option.

Difficulty: Easy

• There is a thick (full) film of lubricant between journal and bearing
• There is only a thin boundary film between journal and bearing
• There is no lubricant between journal and bearing
• Lubricant is pressurised by an external pump to separate surfaces