SKF Bearing fatigue failure


SKF bearing fatigue failure is a failure of the surface in the form mainly of fatigue crack initiation, expansion and fracture process, the load failure alternately under the long-term effects of the metal. Sealing of grease for lubrication. This grease can withstand the high temperatures of 120 degrees short time. If a stable working temperature reaches 70 degrees or higher, standard lithium grease life will be shortened.

    Should always work at high temperatures, you must use a special grease, but also pay attention to whether it is necessary to use a heat-resistant material as the sealing device. Using standard contact seal temperature can not exceed 110 degrees.
    Bearings to withstand the load of the mill bearing much smaller capacity than the same volume, therefore, the radial dimension of its Rolling. Withstand large loads of occasions and requirements of small radial size, structure requires compact occasion <such as the internal combustion engine crankshaft bearings> use of SKF bearings.
    The bearing is particularly sensitive to foreign matter such as metal shavings, once mixed foreign matter, it will produce a relatively large vibration and noise of the intermittently, easily lead to damage. So there are certain limits in the life of a rolling bearing. In short, like the bearing life is shorter than SKF bearings.
    High temperatures often expressed in an abnormal situation. The high temperature is also harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing mill bearing life even move to reduce long-term temperature over 125 ℃. High-temperature bearings caused by reasons including: lack of lubrication or over lubrication, lubricant. Contains impurities, the load is too large, bearing loss of the ring, the lack of space, and oil seals produce high friction, and so on.
    Usually SKF bearing maintenance types have the following three:
    Repair: bearing failure down to check and repair.
    Regular maintenance: in order to ensure the normal work of the host, in accordance with the requirements of the host and bearing design theory and experience in the use, setting up a maintenance cycle, and regular maintenance.
    Warning repairs: the use of state-of-the-art bearing fault diagnosis technology for real-time monitoring of the use of state of the rolling mill bearing, bearing failure forecast for maintenance.
    SKF bearings during operation, there must be sound, temperature, and vibration phenomena. Therefore, for the operation of the bearing maintenance may listen, touch, outlook and bearing fault diagnosis instrument anomalies found bearing mill bearing, according to the changes in the state to determine whether it is in normal working condition.

 


<>SKF Bearing fatigue failure

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