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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Bearing failure method: fatigue shedding and wear Bearing failure method: fatigue shedding and wear
.1) The normal fatigue of the bearing fails after the total number of hours or total number of revolutions of the bearing exceeds the bearing life of the bearing; the fatigue of the attack is normal fatigue failure. The reason for the normal failure is to roll the metal of the appearance because of the operation. The number of stress cycles exceeds the fatigue limit of the data; the fatigue cracks are germinated from the beginning of the subsurface; and the metal fragments are detached from the surface layer and the metal fragments fall off one by one. The characteristics of normal fatigue failure are: the germination of fatigue cracks in the subsurface; therefore, it is invisible; The general instrument can not detect. The surface of the chip that has fallen off is rough and irregular; the original tumbling surface leaves a scar-like pit; it is called pitting. Once the pitting is present, it is agile; it will cause all fatigue to fall off in a short time. It is advisable to replace the bearing early; otherwise, the event of the bearing will be invalidated; it may bring severe results to the device and even to the whole machine. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Excessive exhaustion beyond the life of the accounting; in practice it is an inevitable end of the inevitable appearance; at this time the potential of the data has been fully utilized. If the user's demand for the number of working life is still not satisfactory; can be in the smoothing agent of the bearing Add suitable extreme pressure additives; use bearings with higher function or larger scale; or use vacuum training; bearings made of steel such as repeated vacuum refining.
.2) normal wear and tear of the bearing. The total number of hours or total number of revolutions of the bearing exceeds the calculated life of the bearing; or excessive wear beyond the wear life; for normal wear and failure. The cause of the attack is: the movement of the rolling bearing It is accompanied by small sliding; the load is always shaken; therefore, smoothing can delay the wear but the practice can not prevent the solid touch of the two interfaces; that is, it can not completely prevent the wear. It is characterized by the fact that the rolling appearance is in the direction of movement. Smooth wear stripe; new stripe has a more pronounced metallic luster. The normal wear of the rolling bearing also has two periods; namely short-term "running" wear; steep wear at very long moments; and short-term intense wear; Loss of precision; or cause oscillations and noise that cannot be used continuously.
Wear failure beyond the extra life or wear life; it is practically unavoidable under the state of the art. For example, the user's demand for the number of working life is still not satisfactory; the smoothing method of the bearing can be improved; Smoothing agent; or add appropriate oily additives or anti-wear additives according to the specific conditions; improve the sanitary level of bearings and smoothing agents; improve sealing, etc.
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Bearing failure method: fatigue shedding and wear
Source: China Bearing Network Time: 2013-05-06