INA deep groove ball bearing trajectory often failure analysis

INA bearing a rotation, inner ring and outer ring raceway surface, with rolling body is rolling contact, as the dark side, thus orbit trajectory are attached to the raceway surface does not belong to abnormal, the change can be learned that load conditions, so in the case of remove the bearing, please keep close attention and observation on the surface of the raceway. If you look closely at orbit, will know that only bear radial load, bear the axial load of big, inherit the torque load, or extreme rigid in bearing box is not equal. Can check whether INA bearings with accidents such as whether the load and the installation error of kingdoms, the cause of bearing damage and be investigated for clues. If there is no error and can be used correctly, to deep groove ball bearing life before, but with a very long period of time, in this case, the damage status to divest. On the other hand, there are early damage by accident, and yield to the early damage of use, as the reasons of early damage, not enough to use and the consideration on the lubrication and, in turn, and foreign invasion, INA bearing assembly error and axis deflection of big, not enough research on shaft and bearing box, etc. It can be said that these reasons the situation more overlap each other. So, want to use machine to fully understand the bearing, conditions of use, of the outer bearing structure, on the basis of if we can find out before and after the accident situation, again according to the damage of the deep groove ball bearings and a variety of reasons, can prevent the similar accidents from happening again. INA bearings of general performance for the two kinds of failure phenomenon, one is the bearing installation site temperature is too high, the second is the bearing running noise. 1. Bearing temperature is too high, when the agency is running the installation of bearing parts allowed to have a certain temperature, when the hand touch body shell, should not feel hot as normal, conversely indicates that bearing temperature is too high. The cause of the high bearing temperature are: lubricating oil quality does not conform to the requirements or metamorphism, lubricating oil viscosity is too high; The assemble tight ( Inadequate clearance) ; Bearing assembly too tight; Bearing race in internal rotation shaft or housing; Too much load; Deep groove ball bearing cage or INA body fracture, etc. 2. Bearing noise INA bearings work in allow a slight noise, if you have any abnormal noise or excessive noise or sound, suggests that the bearing failure. INA bearing causes of noise is more complex, one is the bearing inner and outer surface wear. Due to the wear and tear, damage to the bearings and shell, bearing and shaft cooperate relationship, lead to axis deviation from the correct position, when axis at high speed movement produces sound. When the bearing fatigue, its surface metal flake, also can produce sound make bearing radial clearance increases. In addition, the bearing lubrication, forms the dry friction, and deep groove ball bearing and broken would have abnormal sound. Bearing wear loose after kuang, maintains a looseness damage, also can produce sound.