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EDA NUP 315 ECP M,ML bearing check, can determine the fault and damage causes of bearing according to the damage of bearing.
The 1 raceway surface metal flake
The bearing and the inner, outer ring raceway surface are subjected to cyclical fluctuation load, resulting in periodic changes of contact stress. When the stress cycle number reaches a certain value, the outer ring or inner raceway in the bearing, the working surface produces fatigue spalling. If too large self-aligning ball bearing load, will exacerbate this fatigue. In addition, EDA NUP 315 ECP M,ML bearing installation is not correct, shaft bending, also have a raceway spalling phenomenon.
Raceway on Bearing fatigue peeling can reduce the running accuracy of the shaft, the vibration and noise mechanism.
2 bearing burn
Burn bearing raceway, bearing temper. The reason is EDA NUP 315 ECP M,ML bearing in static load or impact load, the local stress more than material yield limit of the working surface, which generally occurs on the low speed rotation of the bearing.
4 bearing ring raceway causes crack crack may be bearing with the tight, bearing inner ring of foreign or loose, inclusive deformation element bearing surface processing, installation of bearing bad etc..
5 cage fragmentation due to lack of lubrication, bearing broken, seat tilt etc.. 5 cage fragmentation due to lack of lubrication, bearing broken, seat tilt etc..
6 keep the metal adhesion frame may be in the EDA NUP 315 ECP M,ML bearing is the cause of the bearing was stuck in a cage or lack of lubrication.
The 7 raceway badly worn
The 7 raceway badly worn
May be in the seat ring into the foreign body, lack of lubricating oil or lubricating oil brand not appropriate.
For EDA NUP 315 ECP M,ML bearing high impact loads of railway, rolling bearings, the M quenching when used after the main failure modes are: assembly sleeve cracking, affected by the impact of external flange off block, the inner ring fragmentation in the use process, and the isothermal quenching bearing because of good toughness, surface stress, both the assembly sleeve cracking, or in the process of using the jacket rib off block, the inner sleeve fracture tendency is greatly reduced, and can reduce the roller edge stress concentration.
For EDA NUP 315 ECP M,ML bearing high impact loads of railway, rolling bearings, the M quenching when used after the main failure modes are: assembly sleeve cracking, affected by the impact of external flange off block, the inner ring fragmentation in the use process, and the isothermal quenching bearing because of good toughness, surface stress, both the assembly sleeve cracking, or in the process of using the jacket rib off block, the inner sleeve fracture tendency is greatly reduced, and can reduce the roller edge stress concentration. Therefore, isothermal quenching than M after quenching self-aligning ball bearing life expectancy and the improvement of the reliability.