NTN tapered roller bearing vibration of the main factors of premature failure

NTN 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 tapered roller 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, improper installation, Accounts for about 16%) 1, use brute force, when installation directly with a hammer percussion NTN bearing to bearing damage; Is the main cause of deformation. 2, installation does not reach the designated position, install a deviation or failure to the bearing, tapered roller bearing clearance is too small. Inside and outside the circle is not in the same center of rotation, resulting in different heart. Suggestion: select the appropriate or professional bearing installation tools, installed with a special instrument to detect. Second, the poor lubrication ( Accounts for about 50%) According to the survey, poor lubrication is one of the leading causes of premature failure of the bearing. Main reasons including: failure to refill lubricant or lubricating oil; Lubricant or lubricating oil filling in place; Lubricant or improper lubricant selection; Lubrication method is not correct, and so on. Suggestion: to select the correct lubricant or lubricating oil, use the correct lubrication filling way. Third, pollution, Accounts for about 14%) Pollution can also cause pollution of the NTN bearing premature failure, refers to dust, metal scraps into the bearing inside. Main reasons including: taper roller bearings early to open the packing before use, cause pollution; When installation work environment is not clean, cause pollution; Bearing of the working environment is not clean, working medium pollution, etc. Suggestion: before use it is best not to unpack the bearing; Keep the installation environment clean, when installation to use the bearing in cleaning; Enhance the bearing sealing device. Four, fatigue, Accounts for about 34%) Fatigue damage is common taper roller bearing damage. Common fatigue failure reasons might be: bearing long-term overload operation; Not timely maintenance; Improper maintenance; Equipment aging, etc. Suggestion: select the appropriate NTN bearing type, timely replacement of bearing fatigue on a regular basis.