NTN thrust ball bearing heating increased load impact on life

Machine tool shaft parts, especially the main shaft, generally and thrust ball bearing assemble into an organic whole, and rotate at high speed, can sometimes produce high heat. If not promptly eliminate, this phenomenon will lead to NTN bearing overheating, and makes the corresponding parts temperature rise and thermal deformation will occur, serious when they make the main shaft and tail frame range is high, which not only affect the accuracy and machining accuracy of machine tool itself, but also the bearing burn out. Rated fatigue life, it is to point to a set of the same type of bearing, in the same conditions, 90% of the NTN bearing not appear fatigue spalling caused by the total number of turns. When the rotating speed is constant, multi-purpose total run time rated fatigue life. When research thrust ball bearing life, not only consider the fatigue life, but also according to the performance of the bearing should have comprehensive several use limit to consider. For example, the grease lubrication grease bearing life. Life and wear life, noise, according to different purposes, using different limit benchmark, so, mostly chosen in advance experience. Therefore, investigation of NTN bearing damage, only the real reason is hard to come by injury. But, if you know the use of thrust ball bearing machinery, conditions of use, bearing the surrounding structure, to get hold of before and after the accident, combined with several damage status and causes of bearing, can prevent the similar accident happen again. NTN bearing is available, mainly considering bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. If there are the following defects can't use, must replace the new thrust ball bearing. Inner ring and outer ring, rolling element and cage on any one have crack or gap.