By INA bearings failure and deterioration, performance status parameter to determine and predict the reliability and performance of the bearings, part of the abnormal situation, reasons and the degree of risk identification and judgement, decide to fix and improve methods of integrated technologies. Therefore, bearings fault diagnosis technology is not a simple fault detection (or monitoring) technology, is not simply a check of instrument. Gathers the signal correctly, quickly and effectively, data processing, manual or automatic identification and judgment. In order to determine the repair cycle of science, it should be based on the failure mechanism, on fatigue estimation, carrying out the necessary tests and wear life. Judge INA bearings in use degree of injury can take a listen, touch, three observation method to determine the second.
　　1, listen: use hearing to identify irregular operation of a very commonly used method. If using a screwdriver or electronic stethoscope to detect irregular noise was a streamlined experience approach often used by operators and maintenance personnel. Bearings if it is good running condition will issue a low whining sound, such as the INA bearings issue is a sharp hiss hiss noise, squeaking sound when you and other irregular, it is possible to be expressed INA in operation of the bearings is already in a bad state.
　　2, touch: high temperature has frequently expressed INA bearings in abnormal situations, high temperature of the lubricant in the bearings can be harmful, however, bearings some time high temperatures caused by the INA bearings lubricant, bearings more than 120 ° c temperature of long-term operation reduce bearings life. Bearings high-temperature lubricants caused by insufficient or excessive lubricant, lubricant contains impurities, excessive load, bearings damage, inadequate clearance, and oil seal friction. Under normal circumstances, in the lubrication of the bearings or a temperature rise after lubrication will have natural and lasts one or two days.
　　3, observation: if getting a good lubrication of bearings and no debris and moisture to enter, that bearings oil seal not wear, if you open the original after the INA bearings box, you should visually inspect the bearings and periodically check the oil seal. Check near the bearings oil seal to ensure that they are adequate to prevent the situation of heat infiltration of liquids, corrosive liquids and gases along the axis bearings, oil seals, if damage should be replaced as soon as possible. Check automatic lubrication system to ensure the oil or grease into the INA bearings, and ensure that the correct amount of added as well as an lubricant is discolored or black, if there is such a situation typically lubricants contain impurities, which use can be harmful to the bearings.



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