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Comment*:	If lubricated, installed appropriately, bearing temperature is rising quite sharply, abnormal high temperature will appear, and then you must stop and take the necessary precautions. Causes of premature failure of deep groove ball bearings are multifaceted, but the main causes are to improperly use and maintenance and improper lubrication, pollution overload, occur impact and shock during assembling, transporting, dismantling process. It really is the beautiful work of art from top experts and engineers of Netherland SKF engineer and analysis center for yrs.