The roller shaft is broken, please ask an expert to analyze the reason
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The two rollers rotate relative to each other. The diameter of the shaft is 140mm, and the material is 45 steel. It has been tempered and tempered. The main shaft broke during the production process. The fracture location is where the roller and the locking plate are in contact, close to the side of the profile wheel.
It should be caused by overload. If it is the roll on the rolling mill, this should be the possibility. Whether to consider the hardness of the material.
fatigue. Life is up. If it doesn't run for long, it's overloaded
Look at this cross section, it looks like it’s worn! It’s caused by external forces! But what about the lock mother?
This depends on how long it was used and what the condition was when it was damaged.
It is easy to judge based on the operating cycle and actual working conditions.
Fatigue is mainly related to the amplitude and frequency of the load, and has little to do with the size of the load.