Regular inspections of ntn bearings are important to maintaining the bearing in its best condition and can also reveal problems. Matters and related knowledge about the use of bearings in use.
We want to emphasize that it is important to keep the flange bearings lubricated and clean. So before we inspect the ntn bearing, we should clean the surface of the bearing and then remove the parts around the bearing. It should be noted that the oil seal is a very fragile part, so extra care should be taken during inspection and disassembly. Do not apply excessive force to avoid damage to the parts. Then carefully check the bearing's oil seal and its surrounding parts. If it has been shown to be a bad symptom, be sure to replace it. A bad oil seal will cause damage to the bearing, causing the bearing to cloud abnormally and causing the machine to stop.
We also check the lubricant of the bearing. Lubrication is important, not for bearings, but for all flanged bearings. However, please note that ntn bearings should not be added with excessive grease.
Apply a little bit of lubricant to the friction between the two fingers. If there is any contaminant, it can be felt; or apply a thin layer of lubricant on the back of the hand and then check the light.
Bearings lubricated with oil should be refilled with fresh oil and allowed to rotate at low speed for a few minutes if the old oil is drained. As much as possible, allow the oil to collect residual contaminants and then vent the oil. Note: It is best to filter the oil before use. Bearings lubricated with grease should be replaced with any material that contacts the flange bearing when the grease is replaced. Since these residual fibers may be wedged between the rolling elements and cause damage, especially the application of small bearings requires attention to this problem.
Ntn bearing failures are often due to a variety of factors, all design and manufacturing process factors and bearing failures, and their analysis is not easy to determine. Under normal circumstances, in general, you can consider and analyze factors and internal factors.
The main factors used for adjustment are installation, use and maintenance, maintenance, etc. in line with technical requirements. The mounting conditions are one of the factors that use the bearing is the primary factor that often causes the change of state between the various parts of the installation package, the operation in the abnormal state and early failure. According to the flange bearing installation, use, maintenance, maintenance technical requirements of the bearing contact load, speed, temperature, vibration, noise and lubrication status monitoring and inspection, found abnormalities immediately find the cause, adjust back to normal.
The influence of the metallurgical quality of ntn bearing materials is the main factor in the early failure of rolling bearings. With the advancement of metallurgical technology (such as bearing steel, vacuum degassing, etc.), the quality of raw materials has been improved. The proportion of raw material quality factors in the flange bearing failure analysis has been significantly reduced, but it is still one of the main factors of bearing failure. The choice of properness is still a must for rolling bearing failure analysis.
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