NTN deep groove ball bearing failure cause solutions

NTN bearing failure is often the cause of many factors, all the influence factors of design and manufacturing process will be associated with the failure of deep groove ball bearing, the analysis is not easy to judge. In general, generally can be used from the two aspects of factors and internal factors considered and analyzed. Use factors mainly refers to install, use, maintenance, maintenance, repair and so on meets the technical requirements. Installation conditions is one of the primary factor of use factor, bearing is often caused by improper installation of a complete set of change the stress of bearing between various parts, NTN bearing under the abnormal state of operation and early failure. According to the bearing installation, use, maintenance, maintenance of technical requirements, the operation of the bearing on the load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, found that abnormal immediately to find the reason, adjustment, so that it is back to normal. In addition, analyze the grease and the surrounding medium, the atmosphere quality inspection is also very important. Internal factors mainly refers to the structure design, manufacturing process and material quality and so on three major factors in determining the quality of bearing. First of all, reasonable structure design and equipped with advanced, just can have long deep groove ball 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, tend to have a more direct relationship with bearing failure. 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. When the bearing temperature, first determine whether the fault, if they really rise, should make the following treatment: ( 1) Check the cooling water pressure, flow rate and pipe system are normal. To filter may be blocked and can't handle, it can stop the process validation, and then put into use. ( 2) Check the governor oil pressure, oil pressure may cause if the cooling water, hydraulic valve closed. ( 3) If there is a difference, to check whether there is abnormal sound bearing and bearing test. ( 4) Take the sample to observe the change of oil color, and test, to see if worse. If confirmed that the deterioration, should change new oil to turn it off. ( 5) Check the oil standard oil level is normal, if not normal, check the water tank drain valve is closed. If closed, should add oil, if it is gasket permeability, should stop treatment. When we use the NTN bearing, if one is found at high temperature, and then quickly stop the operation of the equipment, and then find out the reasons and provide a solution, in accordance with the above treatment, but may be due to different reasons, deep groove ball bearing heating, made in a different way to solve, so we should have the certain conditions, and technical personnel, with the help of complete. 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 bearing failure analysis share has declined obviously, but it is still one of the main influence factors of deep groove ball bearing failure. Select material adequacy is still bearing failure analysis factors must be considered. NTN bearing, the main task of the failure analysis is based on a lot of background material, analysis data and failure forms, find out the main factors of bearing failure, so that the improvement measures are put forward, extend deep groove ball bearings, avoid premature failure of the bearing of the sudden.