Deal with NTN cylindrical roller bearing burn the failure of the three major factors

Fracture refers to because of NTN bearing raceway wheel rim or local part of the roller Angle are exerted impact or excessive load and a small number of fracture. Appear this kind of circumstance is the cause of bearing has taken a knock during installation. The load is too large. Using bad fall, etc. The corresponding measures to improve the installation method ( Adopt the hot charging, using the appropriate tool holder) 。 Correct the load conditions. Cylindrical roller bearing installed, supporting to guard. First of all, reasonable structure design and equipped with advanced, just can have a longer NTN bearing life. Bearing manufacturing generally go through forging, heat treatment, cutting, grinding and assembly, and multi-channel processing operations. The rationality of the processing technology, advanced, stability will also affect the service life of bearing. Which affects the quality of finished products bearing heat treatment and grinding process, often with the failure of cylindrical roller bearing has a direct relationship. In recent years the study of metamorphic layer of bearings working surface show that the grinding process and is close to the surface quality of the bearing. NTN bearing materials of metallurgical quality were the main factors influencing the premature failure of the rolling bearing. As metallurgy technology, For example, the bearing steel vacuum degassing, etc. ) Progress, raw material quality is improved. Raw material quality factor in the cylindrical roller bearing failure analysis share has declined obviously, but it is still one of the main influence factors of bearing failure. Select material adequacy is still bearing failure analysis factors must be considered. The main task of the bearing failure analysis, which is based on a lot of background material, analyze data and failure forms, find out the main factors of NTN bearing failure, so that the improvement measures are put forward, prolonging bearing, avoid cylindrical roller bearing sudden early failure. The second is probably too big load ( Preloading is too big) 。 Speed is too large. Clearance is too small. With water or other foreign matter invasion. If the above two cases are not the shaft, the accuracy of bearing box, shaft deflection. See here, I think everyone wants to know the solution, first of all, to study lubricants and lubrication method, choose the right roller bearing lubricant, and its dosage, and to correct the NTN bearing. Study to cooperate, bearing clearance, and preloading, and improve the sealing device. Check the shaft and the precision of the bearing housing.