1, capitation
    Imported bearings, cavitations is a form of surface damage arising from the solid surface in contact with the liquid and for the relative movement. When the lubricant in the film area of ??low pressure, the oil bubble, bubble movement to the high pressure area will form bubbles collapse under pressure, in the instant collapse of the great impact and high-temperature, solid surface in this repeated role of impact, material fatigue off, so that the friction surface of the small pit, and then developed into a sponge-like scars. Overloading, sliding bearings of high-speed, load and speed changes, often cavitations;
2, fluid erosion
    FAG bearings, fluid erosion is the impact a solid surface in a fluid heated to cause fluid erosion, punctuate scars on the solid surface, the surface of this damage were smooth;
3, the electrical erosion
    Bearing the electrical erosion due to motor or electrical leakage, FAG bearing friction surface between the spark that caused friction surface punctuate wounds, characterized by damage back and forth on the hard surface of the journal.
To predict the fatigue life of rolling bearings, to determine the remaining life, you need to know all bearing fatigue failure phenomena; this will take a long time. However, due to rolling fatigue is under compressive stress at the point of contact fatigue, to achieve the damage will take place a great deal of material change. Early crack, in addition to surface raceway is subjected to chemical effects; the crack growth prior to material changes in circumstances, changes in testing materials may determine the degree of FAG bearing fatigue.



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