INA rolling bearing structure in the process of installation of dialectical relationship

INA bearing materials of metallurgical quality were the main factors influencing the premature failure of the rolling bearing. Follow the metallurgical technology ( For example, the bearing steel vacuum degassing, etc. ) The increase of raw material quality is improved. Raw material quality factor in the bearing failure analysis share has dropped significantly, but it is still one of the main influence factors of bearing failure. Select material adequacy is still bearing failure analysis should consider factors. 1. When installation does not allow drilling, grooving on imported bearings, chamfering, surfacing. Otherwise, easy to cause INA imported bearing ring deformation, affecting the service life of bearings and precision, and cutting off the metal is easy to enter the bearing working surface, accelerate the raceway and rolling element wear and tear, causing premature failure. 2. When installation are not allowed to directly with hammer knock INA bearing ring. Bearing reference face the anniversary itself close to shoulder installation. Bearing reference face is according to the bearing face any type to distinguish, deep groove ball bearings, self-aligning ball bearings, cylindrical roller bearing, spherical roller bearings and needle roller bearings, with no words face as the datum; Angular contact ball bearings and tapered roller bearings, in order to have a word face as the datum. 3. Pressure when installation should be added on the ring width of interference fit with installation, is installed on the shaft, the pressure should be added on the INA bearing inner ring end face; The load bearing hole, pressure should be added on the imported bearing outer ring end face. Don't allow through the rolling element and maintain delivery pressure. 4. For inner ring for tight fit, outer ring for slide fit INA bearings, when installation, the integral type should be the first bearing on the shaft loaded, then shaft together with the bearing load bearing shell hole; Department of separable type, inner and outer ring can be installed separately. 5. Installed to prevent bearing, shaft and bearing hole centerline must coincide. Such as the installation is not straight, need to reinstall, must through the inner ring end face, pull the INA bearings. The main task of the bearing failure analysis, which is based on a lot of background material, analyze data and failure forms, find out the main factors of INA bearings failure, so that the improvement measures are put forward, lengthen spherical roller bearing, avoid premature failure of the bearing of the sudden. The vibration of the bearing of INA bearing failure effect is very significant. For example, peeling, indentation, rust, crack and wear will be reflected in the bearing vibration test so through the use of special bearing vibration measurement device ( Frequency analyzer and vibration meter, etc. ) Can measure the size of the vibration through the frequency distribution can be concluded that the details of the abnormal vibration measured values due to the use of spherical roller bearing premise or sensor installation position and different therefore require prior to each machine measurement value judgment dimension after analysis and comparison.