Date: 2013-08-22

NSK self-aligning ball bearing fault and its countermeasure

Self-aligning ball bearings, if the right choice is not wrong to use, can be used for a long time; in the case of incorrect selection, proper use of, injury status is split. The other hand, unexpected injury early and stand up to early damage as the reason for the early damage, using lubrication considered inadequate, intrusion of foreign bodies, and NSK bearings install error and shaft deflection, the precision of the shaft and housing, inadequate materials and so on. It can be said that these reasons coincide with each other more.
Self-aligning ball bearing symptoms generally appear to be two, one bearing mount in excessive heat, second is the bearing in operation noise.
1, axle bearing temperature too high
Host running, installation of NSK bearings parts allows a certain degree of temperature, when you touch housing with your hands, does not feel hot should be the normal, instead it indicates that the temperature is too high.
NSK bearing high temperature cause: lubricating oil quality does not meet the requirements, or degenerate, lubricant viscosity too high; host assembled too tight (lack of clearance): bearing too tight; housing washer on the shaft or rotating load too large; bearing cage or rolling of fragmentation.
2, axle bearing noise
Self-aligning ball bearings allows at work has a slight running sound, if the noise is too large or unusual noise or percussion click sound, then the bearing is faulty.
Self-aligning ball bearing noise causes are complex, one is the inner and outer rings of the bearings supporting the surface wear. This wear, damage bearings supporting relationship with shell, bearing and axle, causes the axis deviates from the correct location, abnormal noise of bearings running at load time. When bearings are tired, their surface spalling; also for NSK bearing radial clearance increased to have abnormal sound. In addition, insufficient bearing lubrication, formation of dry friction and bearings broken produces abnormal noises. After the bearing wear loose, loose cage damage, will also have an abnormal sound.
Fault removal method
(1) when replacing the bearings, check the new bearing, both shaft and housing bore and conducted a detailed check of the rotor;
(2) when assembling and disassembling bearing, strict implementation of the maintenance process, careful operation, to avoid bearing damage caused by improper Assembly and disassembly;
(3) fuel oil change on time, keep the NSK bearings are in good condition;
(4) run the check, found hidden fault, remove in a timely manner.  

Previous: FAG bearing lubricant selection basic principle
Next: Application of overloads TIMKEN bearing

Hot Products:

Product Model	Inside Diameter	Outside Diameter	Thickness
NN3072 NTN	360	540	134
NN3068 NTN	340	520	133

【TradeBearings News Statement】

1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"TradeBearings".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.