Rolling bearing abnormal maintenance knowledge
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| Time：2016.11.17 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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The main task of service life analysis of rolling bearing is to find out the main factors of bearing failure based on a lot of background materials, data and failure mode analysis. So, the improvement measures should be put forward to prolong the service life of bearing to avoid the early failure of bearing.
Power operation, starting from the no-load low-speed, slowly raised to the rated conditions of the rated operation. Check the test run for the matter, whether there is abnormal sound, bearing temperature changes, lubricant leakage or discoloration and so on. If abnormal, should immediately stop the operation, check the machinery, if necessary, to remove the bearing inspection.
1, bearing life
Under certain load, the rolling bearing in the event of pitting before the number of revolutions or hours, known as the bearing life.
Due to manufacturing accuracy, material uniformity of the differences, even the same material, the same size of the same batch of bearings, under the same working conditions, the life span is not the same. If the statistical life of 1 unit, the longest relative life of 4 units, the shortest 0.1-0.2 units, the longest and shortest life of the ratio of 20-40 times.
In order to determine the standard of rolling bearing life, the bearing life and reliability linked.
2, rated life
The same specifications (model, material, process) of a group of bearings, used in the same working conditions, 90% of the bearing does not produce pitting, experienced by the number of revolutions or hours rated bearing life.
3, the basic dynamic load rating
To compare the bearing capacity of anti-pitting corrosion of rolling bearings, bearing rated life of 1 million (106), can withstand the maximum load is the basic dynamic load rating, expressed in C.
That is, the rolling bearing under the action of the rated dynamic load C, this bearing one million (106) without pitting failure reliability of 90%, C the greater the carrying capacity.
For basic dynamic load rating
(1) Radial bearings are pure radial loads
(2) thrust ball bearings are pure axial load
(3) to the heart of the thrust bearing is generated radial displacement of pure radial components
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