The characteristics of the normal operation of INA bearings and practical diagnosis techniques

INA bearings 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. 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. INA 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 bearing failure in practical need to pay attention to choose the location of the measuring point and sampling method. To accurately reflect the real state of rolling bearing vibration, must pay attention to collect accurate signal, so bearing in the nearest place arrangement of measuring points, the motor fan cover after generally have free end, the selecting the fan cover screw has good monitoring effect. In addition must pay attention to the vibration signal acquisition and analysis of INA bearings for many times, the comprehensive comparison. To get accurate conclusion. In the long-term production status monitoring, we found that the rolling bearing in the process of its use showed a strong regularity, and the repeatability is very good. Normal high quality bearing, at the beginning of the use of vibration and noise are relatively small, but there are some scattered of spectrum amplitude is small, may be due to some defects in the process of manufacturing, such as surface caused by burrs, etc. Diameter series code and width series number generation of INA bearings are collectively referred to as dimension series code. Bearing type code to use as you can see, cleanliness of bearing as the main reason for the damage caused. To prevent the damage caused by the poor cleanliness of work is various: when the engine assembly to ensure the purity of the parts is only one aspect, on the other hand is in use process engine. Operators and maintenance men must be in accordance with the provisions, the proper use of timely maintenance inspection, especially in dusty and chemical raw materials for a long time work under the environment of the engine, be sure to take measures to prevent the erosion of dust and chemicals, to ensure the service life of engine. Engine spindle watts, connecting rod of the soft surface alloy layer, load bearing, the biggest and the most easy to damage, so the following to the main shaft and connecting rod surface damage phenomenon, analysis the reason, in order to avoid fault recurrence after repair.