INA bearings in their use in the process demonstrate a high level of regularity, and repeatability is very good. Normal quality bearings when used at the start, vibration and noise are small, but some scattered spectrum, amplitude is small, it may be due to some defect in the manufacturing process, such as caused by Burr on the surface.
Movement after a period of time, to maintain a certain level of vibration and noise, spectrum is single, only Yi、erbei frequency. Rare three times more than double the frequency spectrum, bearings are very stable, entered a period of stability.
Continue to run into use later, INA bearing vibration and noise began to increase, sometimes abnormal noise, but changes in the vibration increases more slowly, at this time, bearing kurtosis value suddenly reaches a certain value. We believe that the performance for the early failure of the bearing.
First of all, we want to stress is, keep the bearings are lubricated and clean is very important. So before we examine bearings, you should clean the bearing surface, and then disassembling bearing parts around. We should pay attention to, is very fragile parts oil seal, and therefore require extra care in inspections and disassembly, not excessive force, so as not to cause damage to parts. Then carefully check the bearing oil seal and its surrounding parts, if already a bad symptoms, be sure to replace the bad oil seals will cause damage to the bearing, bearing cloud caused by the abnormal equipment downtime.
Secondly, we also have to check the bearing lubricant. Lubrication is very important, not only for bearings, bearings for all. But note that the bearings should not be adding too much grease.
Stained with lubricant on friction between the two means-dots, if the presence of pollutants, are feeling out; or coated with a thin layer of lubricant on the dorsum, and then make the rays.
Used oil lubricated bearings after purging old oil, if possible, should be poured into the fresh oil and let the machine at low speed of rotation for a few minutes. Oil collects residual contaminants as much as possible, and then purging these oils. Note: oil'd filtered before use. The use of grease lubricated bearings when replacing the grease, used by Joe in addition to bearing should be avoid contact with cotton to any of the parts. Fiber because these residues may be between wedge on scroll and causing damage, especially small bearing application of more attention to this issue.
INA bearing fault feature to demonstrate advanced serious failure occurs (usually bearing damage such as axle, Burns, Sha spallation, Raceway, beads to wear) most of the time not exceeding one week, device capacity larger, faster speeds, shorter intervals. Therefore, actual INA bearing fault diagnosis, once advanced fault feature, there should be decisive judgment bearing failure, as soon as arrangements for inspection.



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