Bearing failure physical and background material collection

Should collect as much as possible to the failure of physical parts and pieces. As much as possible about the failure of bearing the actual working conditions, use process and manufacturing quality. The failure analysis is essential for correctly. It includes the following content:,) Bearing the period of the working condition of machines, load and speed. The design of the bearing on the device ( 2) The situation of the bearing failure. View is only bearing failure or other parts have failure, belong to what type bearing failure. ( 3) The installation of the bearing running record. Running in the process of using are all normal operation. ( 4) Bearing on the real work load, is in line with the original design. ( 5) The actual speed of work and the frequencies of different speeds. ( 6) Fails to see if there is the rapid increase of the temperature or sudden increase in the smoke, noise and vibration. ( 7) Working conditions in the presence of corrosive medium, bearing and its contact surface oxidation of the shaft neck and any special color stain or other color. ( 8) The installation of the bearing ( Both bearing before installation dimension accuracy of the re-inspection) , bearing and the bearing clearance, assembly and in the case, the bearing seat and rigid frame, installation whether there are abnormal. ( 9) If there is a change thermal expansion and the power of bearing operation. ( 10) Bearing lubrication situation, including the type, composition, color, viscosity of lubricant, impurity content, filter replacement and supply situation, etc. , and its sediment were collected for analysis. ( 11) Bearing material is correct, the quality of material is in accordance with the standard or drawing requirements. ( 12) Bearing surface of the manufacturing process is normal, whether there is a plastic deformation, is there any surface grinding burns. ( 13) Failure of bearing repair and maintenance record. ( 14) With batch or the similar bearing failure. In an actual failure analysis background material collection, all it is difficult to meet the above requirements, but the more data collected, will no doubt be more conducive to get the correct analysis conclusion. Macro check