Typically, temperature of the bearing with the bearing operation began to rise slowly, 1-2 hours later to reach a steady state. The normal temperature of the bearing due to the heat capacity of the machine, heat, speed and load another. If lubricated, install suitable, a slide bearing temperature will dramatically increase, abnormal high temperature occurs, in which case you must stop and take the necessary precautions.
1, wear
Wear failure means relative to the surface of sliding friction causes it to work constantly wear and failure of the metallization. Continued gradual damage bearing parts caused by wear, and eventually led to the loss of precision of bearing size and other related issues. Wear may affect the shape change, clearance increased and morphological changes on the surface, might affect the lubricants or it reaches a certain degree of contamination caused by the complete loss of lubrication function, thus loss of running accuracy of the bearing and does not operate properly. Wear failure is one of the common failure modes of all kinds of bearings, classified according to the wear is usually in the form of the most common abrasive and adhesive wear of wear.
2, contact fatigue failure
Failure means the bearing surface of contact fatigue results from alternating stress the role of failures. Contact fatigue spalling in bearing working surface, often accompanied by fatigue cracks, contact surface the following maximum alternating shear stress in the first place, and extending to the surface to form a variety of Flake shapes, such as point-like pitting corrosion or pitting flaking, spalling of shallow Flake into small flakes. Due to flaking surfaces gradually expanded, and often expand into the deep, forming deep peeling. Deep contact fatigue failure fatigue spalling is the source.
3. fracture
Bearing failure due to defects and overload two major factors. When plus loads more than material fracture strength limit resulting parts called overload fracture. Overload is mainly hosts sudden failure or improper installation. Sliding bearing parts of micro-cracks, shrinkage, bubbles, large foreign bodies, organizations and local overheating burn defects in shock overload or violent vibration also caused by defect in fracture, fracture called defects. It should be noted that, sliding in the manufacturing process, raw materials into the plant complex, forging and heat treatment quality control inspection, process control instrument the correct analysis of the flaws are there, still controls must be strengthened in the future. In General, however, often appears on the majority of those bearing failure overload failure.



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