Through the bearing fault three identification method to determine the cause of the fire or lock

Through the voice recognition need to have a lot of experience. Must go through adequate training to achieve voice can identify the bearing and the bearing. Therefore, should as far as possible from staff to carry out the work. With listening gear or listening bar on the shell can be clearly heard the sound of the bearing. Through the method which can identify working temperature comparison method of identification, is limited to use in place of running condition is not change. Therefore, must carry out continuous recording of temperature. Failure, the temperature rises not only, still will be irregular change. The method and voice recognition method and advisable. Through the state of lubricant, and the recognition of lubricant sampling analysis, through its pollution degree, whether into foreign body or metal powder, etc. The method for larger cannot close observation of bearing or bearing are particularly effective. 1, incorrect bearing clearance. For example, should choose C3 clearance and real choose ordinary group clearance. As bearing when accumulating heat, trunnion and inner ring and rolling body will expand, outer ring for heat dissipation condition good expansion is relatively small, the overall bearing clearance becomes even appeared larger negative clearance. At this point, the compressive stress between roller and raceway, lubrication conditions to drop, can appear the phenomenon of boundary lubrication can appear even local steel on steel dry friction, so the temperature continues to rise, the grease base oil volatilization, a vicious cycle lead to bearing overheating burned, roller annealing into blue-black color, then jumps rolling element bearing friction appeared stalling crushed cage bearing lock. 2, the size of the hole size deviation is too small or shaft bearing deviation is too large, extrusion deformation of bearing ring making smaller clearance. To produce fire lock phenomenon. 3, between bearing outside diameter and bearing hole or a foreign body between bearing inside diameter and axial surface mat, such as iron filings, burr, sand grain, cotton, etc. Extrusion deformation of bearing making smaller clearance. To produce fire lock phenomenon. Especially self-aligning bearing in the production process middle gap is relatively larger.