NTN import bearings in the use of the problems and their solutions

Before using NTN import bearings, the first thing to check the surface of the bearing, so as to deduce whether the bearing load our requirements and standards. Check on the surface of the bearing should be under astigmatism lamp operation, to the bearing surface of the crack and detailed examination. A, the rolling bearing, bearing even with slight stripping damage, such as using sound device for rolling sound of bearing in operation of intrusive and quality checking. Also announced exceptions and rules, and with the sound of the measuring device can tell. Second, the vibration of the bearing, such as peeling, indentation, rust, crack and wear are reflected in the bearing vibration measurement, bearing vibration is sensitive to damage of NTN import bearings. So, through adopting special bearing vibration tester ( Frequency profiler, etc. ) To measure the vibration of the intrusive, after frequency points isn't fathom out abnormal condition in detail. Measured values due to the use of the bearing premise or sensor installation position and differences, thus requirements prior to analyzes the measured value of each machine in the discriminant specification after the match. Three, the temperature of the bearing: ordinary have a bearing on the surface of the outdoor temperature can guess out, the temperature of the bearing. If used oil hole can directly measure temperature of bearing outer ring, is more appropriate. Earth, the temperature of the bearing with running start gradually rise, 1 - 2 hours to reach the same form. The normal temperature of bearing for mechanical heat capacity, heat dissipating capacity, rotational speed and load and differences. If the smooth, installation department is appropriate, the bearing temperature rise sharply, can present abnormal high temperature, must stop at this moment, accept need to guard against. On the basis of a lot of test data, table 4 - 1 lists all kinds of mechanical bearing outer temperature uniform value during a mission, for your reference. Because the temperature of the smooth, rotational speed, load, and values in the table are only revealed performance approximate temperature limitations. Using thermal device can monitor the task of bearing temperature, and completes the temperature across the rule value active alarm or stop to avoid burning shaft confound attack. Four, lubrication: there is no normal lubrication, lubrication of NTN import bearings and the fatigue life of friction, wear, temperature rise, vibration, etc have important influence. Bearing cannot work. Analyze the failure reasons of bearing indicate that about 40% of the bearing damage is related to bad lubrication. Therefore, good lubrication of the bearing is an effective measure to reduce the bearing friction and wear. Bearing in the rolling bearing in use process because of itself quality and external conditions, its carrying capacity, rotating accuracy and antifriction performance will change, in fact anything in use will reduce the life span. But we are here to say is, when the performance of the bearing is lower than the use requirement and when not working, is called a bearing damage or failure, bearing in the event of damage, such as accident happens, there will be stalling its machines, equipment, functional damage and other anomalies. So you need to investigate causes in a short time, and take corresponding measures, of course, the rolling bearing damaged the damage is much more complex than general machinery parts, the characteristics of the rolling bearing damage is the number of forms, reasons, bearing damage in addition to bearing design and manufacture of the inner factors, mostly due to improper use, bearing design is unreasonable, improper installation, poor lubrication, sealing caused by external factors, such as bad. See here should know some factor in the rolling bearing damaged, so the formation and causes of damage of rolling bearing has the vital significance, on the one hand can improve the using method, proper use of bearings, bearing should have adequately, on the other hand can help to develop new product performance better. Narrative rolling bearing used in this article, in addition to note, method of installation, operation and supervision thereof, also introduces the NTN import bearings damage form and the reasons and the countermeasures should be taken.