INA rolling bearing work the influence factors of quality of life

INA bearings bearing now more market share nots allow to ignore, from the market perspective is anything more will give some opportunistic opportunity, so fake and inferior products also emerge in endlessly. From personal experience for the factors influencing the service life of the rolling bearing may have a lot of, use factors and internal factors, could further instructions. Bearing use factors mainly refers to install, use, maintenance, maintenance, repair and so on meets the technical requirements. 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. Installation condition 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, bearing in the abnormal state of operation and the service life of the early end 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. ( A) Bearing the load on the basis of load to choose rolling bearing type, about pure axial load, common use thrust bearing. Pure axial load can choose smaller thrust ball bearing; The larger pure axial load can choose thrust roller bearings. About pure radial load, ordinary choose deep groove ball bearings, cylindrical roller bearing or needle roller bearing. When in A radial load bearing R also, there are not large axial load, A deep groove ball bearings or optional contact Angle of angular contact ball bearing or tapered roller bearing; When the axial load is bigger, can choose contact Angle is larger or tapered roller bearings, angular contact ball bearing may choose the centripetal bearing and thrust bearing combination together to construct, identify bear radial load and axial load. ( 2) The speed of the bearing under the normal speed, the speed of the bump effect on what type of chose not to attack, as long as the high speed, just can have apparent effect. Bearing samples included in all kinds of type, size bearing limit speed value. This speed is refers to the load is not too big, P≤0。 1 C, C as fundamental additional dynamic load) , cooling the premise is normal, and the level 0 when bearing the largest public service promise speed. ( 3) Bearing of cardiac function in the middle of the shaft and bearing seat, median line not overlap and the Angle error, or because of the axial force and bending or leaning, can form the inside circle of the bearing axis deflection. At this moment, there is a should be adopted the cardiac function of self-aligning ball bearings or spherical roller bearings. This type of bearings in table circle axis has not relative deflection can still normal tasks. Cylindrical roller bearings and needle roller bearing deflection of bearing is most sensitive to the bearing capacity of this type of bearings in shadow form to below the ball bearings. In shaft stiffness and supporting stiffness of bearing hole is lower, should try to prevent this type of bearing. 4) Bearing device and open to facilitate installation, but also should be consider when choosing rolling bearing type of an element. In bearing no subdivision surface and the axial device and disassemble the INA bearing parts required, should first selection list circle do not bearing ( Such as N0000, NA0000, 30000) 。 When the shaft on the long shaft device, to facilitate the installation, you can choose them circle hole for 1:12 cone hole ( To device on the adapter bushing) The bearings. INA 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 bearing failure. Select material adequacy is still bearing failure analysis factors must be considered. 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 product rolling 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. Analysis, the main task of the service life of INA bearings is based on a lot of background material, analyze data and failure forms, find out the main factors of bearing failure, so that the improvement measures are put forward, prolonging bearing, avoid premature failure of the bearing of the sudden.