From the use of factors of bearing fault maintenance methods - INA universal joint bearing knowledge

by:Waxing     2020-05-27
Bearing manufacturing generally go through forging, heat treatment, cutting, grinding and assembly, and multi-channel processing operations. The rationality of the processing technology, advanced, stability will also affect the service life of bearing. Which affects the quality of finished product INA bearing heat treatment and grinding process, tend to have a more direct relationship with bearing failure. Metamorphic layer on the surface of a universal joint bearings work in recent years, research has shown that is close to the grinding process and the surface quality of bearing. Analysis, the main task of the service life of INA bearings is based on a lot of background material, analyze data and failure forms, find out the main factors of bearing failure, so that the improvement measures are put forward, prolonging bearing, avoid premature failure of the bearing of the sudden. To shaft bearing before installation, must first remove the bearing a coat of fixed pin, the shaft neck at the same time clean exterior burnish is smooth, and the journal oil anti-rust and lubrication ( Allows for a slightly bearings on the shaft rotation) 。 Coating on surface of the bearing and the bearing lubricating oil, the INA bearing load bearing. Pushed to the required location for installation. Fixed bearing bolts do not tighten, let bearing coat in bearing internal energy. Also installed on the same shaft, on the other side of the bearing and shaft turning laps, let INA bearings automatic alignment position itself. Then good bearing bolts. Eccentric sleeve. The eccentric sleeve installation is firm, finally lock eccentric sleeve on the socket head cap screw. Continue to run after late into use, the universal joint bearing vibration and noise began to increase, sometimes a different sound, but the change of vibration increase is relatively slow, at this point, the INA bearing kurtosis value began suddenly reaches a certain value. We believe that the bearing is characterized by the early failure. At this point, requires the imported bearing is monitored closely, pay close attention to the change. Since then, bearing kurtosis value began falling fast, and is close to normal, and significant increase in vibration and noise, it began to accelerate the increase, when the vibration more than standard ( Such as ISO2372 standard) , its bearing kurtosis value also began to increase rapidly, when more than vibration standard, and kurtosis value is more than normal ( Available kurtosis relative standard) When we think of universal joint bearing fault has entered the late production, should be timely maintenance equipment, replace the bearing. Late show bearing fault feature to severe fault ( Is commonly INA bearing damage, such as holding shaft, burns, sand spallation, raceway, wear beads, etc. ) Most of time not more than a week, the bigger the equipment capacity, the faster the speed, the shorter the time interval. Therefore, in actual self-aligning ball bearing fault diagnosis, once found late fault characteristics, should be decisive judgment universal joint bearing fault, arrange inspection as soon as possible.
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