General, if the correct use of bearings can be used to the fatigue life is reached. But there will be accidents to premature damage can not be resistant usage. This early injury, the relative fatigue life, failure or accident is called the quality use of limits. More due to the installation, the use of lubrication on the pay no attention to the intrusion of foreign bodies from the outside, for the axis, the thermal effect of the shell is not sufficient.

    Damage state, such as NSK Bearings: roller bearing rings, ribs card injury, may be considered as reasons for lack of lubricant and is not suitable for row oil structure defects, the intrusion of foreign bodies, bearing installation error, axis deflection is too large, and the these reasons overlap.

    Therefore, only investigated the damage, it is difficult to know the real reason of the injury. However, if you know the use of machinery bearing conditions of use, the bearings around the structure, to understand the situation before and after the accident, combined with bearing damage state and the inspection of several reasons, we can prevent similar incidents from happening again.

Bearing of the judgment:

     Available to judge whether the SKF Bearing, bearing damage, mechanical properties, the importance of operating conditions, to the next maintenance period. If the following defects can no longer use must be replaced with new bearings. The inner ring, outer ring, rolling body cage any cracks or gaps.

    A ring, rolling body on any fracture.

    2, the rolling plane, ribs, rolling on the card hurt.

    3, cage wear or rivets with relaxation.

    4, raceway, rolling rust injury.

    NTN bearing raceway, rolling element serious indentation and hit marks.

    6, the inner diameter surface or the outer ring outer diameter surface of creep.

    7, due to heat caused obvious discoloration.

    8, NACHI bearing, enclosing grease seals or dust cover damage evident.


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