If you can know that the railway bearing fatigue life is one thing but it's useful if there was no bearing to achieve this fatigue is no problem, so that virtually equivalent to change the efficiency of the railway bearing the fullest, and is Without prejudice to the bearing under the premise.
Predict the fatigue life of the railway bearings, bearing fatigue failure phenomenon, this will take a long time to determine the remaining life, you need to understand. However, to achieve, due to rolling contact fatigue is under compressive stress in the contact point of the occurrence of fatigue damage will occur to a great deal of the material changes. Thus, in addition to the outer surface of the incipient crack, raceways subjected to chemical effects, crack propagation first material change, the change of test materials may determine the fatigue of the bearing.
In order to give full play to the bearing and long-term to maintain its proper performance, you must be really good job in the periodic maintenance (periodic inspection). Through appropriate periodic checks, to achieve early detection of the failure, to prevent accidents in the first place, is very important to improve the productivity and economic.
Good appearance record the railway bearings removed for inspection, first with photography and other methods. In addition, make sure that the remaining amount of lubricant and lubricant samples, and then cleaning the bearings.
a railway bearing cleaning rough wash and wash out, and put a metal grid at the bottom of the container.
b, coarse wash brushes used in the oil or grease removal adhesive material. Rotating bearings in oil, pay attention to rolling surface due to foreign object damage.
c, sperm washing, in oil slowly turn the rail bearings, be carefully carried out.
Commonly used cleaning agents for the neutral water, diesel or kerosene, is sometimes necessary to use warm lye. Regardless of what kind of cleaning agent, the filter should always be kept clean.
Railway bearing fatigue, the residual stress of the raceway surface can be measured by using the X-ray machine, diffraction line Banfu width, change in the amount of residual austenite to grasp.
These values, the changes occur with increased fatigue. Residual stress will increase saturated value early in the fatigue, therefore, be used to detect a slight fatigue, but in a large section of the fatigue of the diffraction line width at half amplitude of retained austenite changes and fatigue intensification of association. X-ray test value is summed up in one index (fatigue index), to find the relationship with the railway bearing endurance test of time.



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