Fluid film lubrication

Fluid film lubrication occurs when a thin layer of liquid, such as oil, separates two moving surfaces, preventing direct contact and reducing friction and wear. The liquid film is maintained by motion and pressure, allowing parts to glide smoothly over each other. This type of lubrication is common in machinery like engines and bearings, where the fluid film withstands the forces involved, ensuring efficient operation and longevity of components. Effective fluid film lubrication depends on proper flow, viscosity, and load conditions to keep the surfaces apart during movement.