TIMKEN bearing contact fatigue failure of the bearing surface by alternating stress the role of failure, and deep peeling is the intrinsic reason to produce contact fatigue failure.
We know that the contact fatigue spalling occurred in the surface of the deep groove ball bearings, often accompanied by fatigue crack from the contact below the surface of the largest alternating shear stress at first, and then extended to the surface to form a different shape of peeling, such as point-like point corrosion or pitting and spalling, flaking into small pieces known as shallow spalling. Peeling surface gradually expanded, and often extended to the deep, forming a deep peeling.
Wear failure means the surface relative sliding friction between the work surface metal constantly wear and failure.
The continuous wear and tear will cause the bearing parts gradually damage and eventually lead to loss of bearing dimensional accuracy and other related issues. Wear may affect the shape change, with the gap increases and the work surface morphology changes may affect the lubricant or make pollution to the extent caused by lubricating the complete loss of function, thereby bearing the loss of rotational accuracy and even can not operate normally. Wear failures all kinds of bearing a common failure mode of the wear in the form usually can be divided into the most common abrasive and adhesive wear.
TIMKEN bearing fracture failure of the main reasons TIMKEN bearing defects and the use of overload
when the applied load exceeds the strength of the material limits of the part fracture is called overload fracture. Overload is mainly due to a host of unexpected failure or improper installation. Bearing parts of the micro-cracks, shrinkage, bubbles, large pieces of foreign debris, overheating organizations and local burns and other defects in the impact of overload or excessive vibration also caused by defects at the fracture, known as the defect fracture. It should be noted that the bearings in the manufacturing process, raw materials into the retest, forging and heat treatment, quality control, process control instrument to correctly analyze the above-mentioned defects, must be strengthened in the future control. In general, however, usually deep groove ball bearing fracture failure most of overload failure.



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