INA outer spherical bearing affecting the stability of operation failure periodically check method

The key factors affecting the service life of INA bearings for many of the rotating machinery products their service life depends on the key parts in the product more bearing parts of life. 'Maintenance' bearing not bearing will never damage or failure but not damage within a certain amount of time. Here outside designers to calculate the service life of the spherical bearing the service life of bearing is greater than or equal to the overhaul period of such bearing mechanical products can be 'free maintenance' in the overhaul of mechanical products and replace new bearing can don't need to use a bearing for maintenance. Continue to run after the late into use, INA bearing vibration and noise began to increase, sometimes a different sound, but the change of vibration increase is relatively slow, at this point, the bearing kurtosis value began suddenly reaches a certain value. We believe that the bearing is characterized by the early failure. First of all, we have to stress is that it is important to keep outside the spherical bearing lubrication and clean. So when we inspect the bearing before, should first clean the surface of bearing, and then remove the perimeter of the bearing parts. Everyone should pay attention to, oil seal is very fragile parts, so in check and need to be careful, when disassembling do not excessive force, so as not to cause damage to parts. And careful check of the bearing oil seal and its surrounding parts, if has presented the adverse symptoms, be sure to replace, and bad seal will cause the damage of the INA bearing, the bearing cloud caused by abnormal equipment downtime. Second, we need to check the bearing lubricant. Lubrication is very important, not just for bearing, also for all of the bearing. But please note that the outer spherical bearing shoulds not be too much grease. With little lubricant in friction between two fingers, and if the presence of pollutants, can be felt; Or in the back of a thin layer of lubricant, then seal of inspection. Use after xie used engine oil, engine oil lubrication bearing if possible, should be impregnated with fresh oil and let the machine in low speed rotation for a few minutes. As far as possible make the oil collecting residual pollutants, and then purging in addition to the oil. Note: the oil before use it's best to filter it. While using spherical bearing grease lubrication in replacing grease, Joe used in addition to the device should be avoided with any part of the joint Angle of cotton into the bearing. Because these residues fiber may wedged in between the scroll and damage, especially the application of small bearing more need to pay attention to this problem. INA bearing fault feature late show to the severe fault ( For bearing damage, such as holding shaft commonly, 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 the actual bearing fault diagnosis, once found late fault characteristics, should be decisive judgment is bearing fault, arrange inspection as soon as possible. Cause noise of rolling bearings is more complex, one is the bearing inner and outer surface wear. Due to the wear and tear, damage to the bearings and shell, bearing and shaft cooperate relationship, lead to axis deviation from the correct position, when axis at high speed movement produces sound. When the outer spherical bearing fatigue, its surface metal flake, also can produce sound make bearing radial clearance increases. In addition, the bearing lubrication, forms the dry friction, and INA bearing broken would have abnormal sound. Bearing wear loose after kuang, maintains a looseness damage, also can produce sound. When institutions, installation of bearing parts allowed to have a certain temperature, when the hand touch body shell, should not feel hot as normal, conversely indicates that bearing temperature is too high. The cause of the high bearing temperature are: lubricating oil quality does not conform to the requirements or metamorphism, lubricating oil viscosity is too high; The assemble tight ( Inadequate clearance) ; Outside the spherical bearing assembly too tight; Bearing race in internal rotation shaft or housing; Too much load; Bearing cage or rolling body fracture, etc. Determined by INA bearing structure design parameters of stiffness, flexibility, quality, such as damping of vibration system under the condition of operation will produce that can meet the needs of its mechanical vibration.