Sliding Bearing Cavitation Analysis

Under the impact of the cylinder pressure bearing load) repeated action, the surface layer of self-lubricating bearing plastic deformation and work hardening, some loss of deformation ability, and gradually form lines and continue to broaden, and then follow the falling debris, the surface layer of the carrier by constitute points. General bearing cavitation occurs, it is the first emergence of a pit, and then gradually expand this pit and cause cracking of the alloy layer interface, the crack widening along a direction parallel to the interface until the fall aborted. Bearing Cavitation primary reason is, since the slide bearing grooves and oil holes and other planning elements of the cross section resulting in a sudden change of oil flow severe disorders, loss of tone in the oil vacuum zones constitute bubbles, then as pressure increases, while the bubble collapse Cavitation occurs. Cavitation generally occurs in high load bearing areas, such as lower bearing on the crankshaft main bearings.