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Bella2020.07.03 10:12

INA bearing selection summary
The market requirements of various mechanical devices and instruments that use rolling bearings are becoming stricter, and the requirements and performance of bearings are also becoming more diversified. In order to select the most suitable bearing from the numerous structures and sizes, it is necessary to study from various angles.
 
When selecting an INA bearing, the bearing arrangement, ease of installation, and disassembly as a shafting, the space allowed by the bearing, the size, and the marketability of the bearing are generally considered, which roughly determines the bearing structure. Secondly, while comparing the design life of various machines using bearings and the various endurance limits of the bearings, the bearing dimensions are determined. When choosing an INA bearing, it is often biased to consider only the fatigue life of the bearing, and the grease life, wear, and noise caused by grease aging also need to be fully studied. Furthermore, according to different applications, it is necessary to select the bearings with special requirements for accuracy, clearance, cage structure, grease, etc. However, there is no certain order and rules for selecting INA bearings. The priority should be the conditions, performance, and most related matters that are required for the bearings, which is especially practical.
 
Influence of external conditions on INA bearings
Vibration can be said to be quite sensitive to damage to INA bearings, and flaking, indentation, rust, cracks, wear, etc. will be reflected in the INA bearing vibration measurement. Therefore, the size of the vibration can be measured by using a special bearing vibration measuring device (frequency analyzer, etc.), and the specific circumstances of the abnormality cannot be inferred by the frequency division. The measured value differs depending on the use condition of the bearing or the installation position of the sensor, etc. Therefore, it is necessary to analyze and compare the measured value of each machine in advance to determine the judgment standard.
 
High temperature is also harmful to the lubricant of INA bearings. Sometimes INA bearing overheating can be attributed to INA bearing lubricant. Long-term continuous rotation of bearings at temperatures exceeding 125 ° C will reduce bearing life. The causes of INA high temperature bearings include: insufficient lubrication or excessive lubrication, lubricants. It contains impurities, excessive load, INA bearing damage ring, insufficient clearance, high friction caused by oil seal and so on.
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