On bearing failure diagnosis method, tradition is based mainly on classified surveillance and diagnosis of the State, classified according to the nature of the measuring signal. According to this classification, condition monitoring and fault diagnosis of bearing temperature method, oil analysis and vibration (noise) Act. Temperatures through the monitoring of the law bearing (or tank) temperature to determine if bearings are working properly. Temperature monitoring on the bearing load, speed and condition changes reflect a more sensitive, particularly due to poor lubrication and bearing overheating is very sensitive. So; more effective for such occasions. However, when bearing such as pitting, spalling of the dry, mild wear compare micro-failures, temperature monitoring largely reflected only if the failure to achieve a certain degree of gravity, can be monitored in this way. Therefore, pitting, local spalling of temperature monitoring does not apply to the so-called damage failure.
Oil analysis is a used lubricating oils removed from the bearing oil samples, through the collection and analysis of metallic particles in oil sample size and shape to determine the method of bearing condition and failure. This method only applies to oil-lubricated bearings, and not to the grease-lubricated bearings. In addition, this method is vulnerable to other non-bearing particle effects of falling damage. Therefore, this method has significant limitations.
1. improper Assembly
When installing using brute force, is a major cause of deformation. Installation is not in place, are the reasons for defects.
Recommendation: select the proper bearing installation tool or professional, installed using special instruments and detection.
2. the pollution damage
Pollution can also cause premature bearing damage, pollution refers to water, sand, metal shavings into the bearing. May lead to bearing rust, face wear, abrasion and depression.
Recommendation: to check on a regular basis, to be used to wash the bearings; enhanced bearing sealing device.
3. poor lubrication
No lubrication or lubricant in a timely manner; lubricants or lubricant does not raise in place; lubricants or lubricant improper selection; lubrication incorrect result of component abrasion or severe deformation of the bearing.
Recommendation: choose the right lubricants or lubricant, using the correct lubrication of filling, regular replenishment of the lubricant.
4. current and eccentric
Bearing rotation power may be causing the Groove or nicks, bearing at rest, electrical grounding improper operation will cause a minor burn, eccentric or heavy-load operation may cause spalling geometric stress concentration, or surface.
Recommendation: to bearing parts before welding by appropriate ground connection to reduce or avoid current through the bearing, precise machining of bearing seats and abutments.


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