Bearing in normal use, due to the gradual wear and tear until the last loss of ability to work to end its service life, this natural damage is unavoidable. However, if the engine assembly due to improper adjustment, poor quality or poor conditions for the use of lubricants and other factors lead to premature bearing wear or damage, it is caused by man-made early damage. Early damage not only greatly reduces the bearing life, but also affect the normal operation of the engine. According to the long-term diesel engine maintenance experience found that the common forms of early damage to sliding bearings are mechanical damage, bearing cavitation, fatigue pitting corrosion and so on.
