How to install the SKF bearing running after inspection

Imported bearings after completion of installation in the host, such as the measurement of spindle radial runout, can find its each turn of measuring value has a certain change; Continuous measurement, can be found that after a certain number of revolution, this change will approximately duplicated. Measure for cyclic rotation accuracy degree of the change, change the approximately duplicated the revolution, on behalf of cyclic rotation accuracy 'cycle', the value of the amplitude changed in quasi cycle, is the cycle rotation accuracy is poor. Such as the proper preload on the spindle, the speed decreases gradually to close to compulsory rotational speed, on bearing the 'break-in' effect, can improve the circulation of the spindle rotation accuracy. Used to adjust the main factor is the installation, use and maintenance, maintenance, such as conform to technical requirements. According to SKF bearing installation, use, maintenance, maintenance of the technical requirements of operation of the bearing contact 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. Installation conditions is one of the factors of using bearing is often caused by incorrect installation package state changes between each part of the primary factors of bearing capacity in the abnormal operation status, and living the early termination of the internal factors mainly refers to the structure design, the quality of the manufacturing process and materials, there are three factors determine the quality of the bearing. Is the main factor influencing the quality of bearing material metallurgy rolling bearing early failure. With the progress of metallurgical technology ( Such as bearing steel, vacuum degassing, etc. ) , improve the quality of the raw materials. The proportion of raw materials quality factors in the analysis of the bearing is markedly reduced, but it is still one of the main factors of bearing failure. Choose proper is still bearing failure analysis must be considered. Bearing manufacturing through forging, heat treatment, cutting, grinding and assembly process operation. The rationality of the processing, advanced, stability will also affect the service life of bearing. Affect the bearing heat treatment and grinding process, often associated with bearing fault more direct relationship with the quality of the product. In recent years, the deterioration of the surface layer of the bearing show that the grinding process is closely related to the bearing surface quality. SKF bearing service life analysis based on a lot of background material, is the main task of the data and failure mode analysis, find out the main factors of bearing failure, therefore, put forward the improvement measures, prolonging bearing service period, in order to avoid sudden bearing early failure disease. Dynamic operation, from the beginning of the no-load speed, slowly up to the rated operating conditions. Test run to check the items, whether there is abnormal sound, the change of bearing temperature, lubricant leakage or discoloration, and so on. If discovery is unusual, should immediately stop, check machine, when it is necessary to remove the bearing inspection. Bearing temperature, average according to the external temperature of the bearing. But using the oil hole directly measuring the temperature of the bearing outer ring more accurate. The bearing temperature, starting operation gradually increases, usually 1 ~ 2 hours after the temperature stability. If the bearing installation, the temperature will rise sharply, abnormal high temperature. The reason such as lubricant, bearing clearance is too small, too much bad installation, excessive friction sealing device, etc. High-speed rotation, the choice of the ways of bearing structure, the lubrication error and so on is also the reason. SKF bearing examination such as the rotation of the sound with a stethoscope, a strong metal noise, such as vision, irregular note that exception. Its reason has poor lubrication, shaft or precision bearing, bearing damage, foreign body intrusion, etc. Bearing common faults as follows: 1, the tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; Iron spectrum appeared a lot of non-ferrous metal components in sub-micron wear particles; Lubricating oil excess moisture, acid value exceeds bid. 2, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint. 3, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint. Under the condition of fluid lubrication, sliding surface is lubricating oil without direct contact, also can greatly reduce the friction loss and wear of surface oil film also has a certain vibration absorbing ability