How to watch the quality of the chain through the outside
The quality of the chain can be distinguished by looking at the appearance of the chain, which is a very intuitive method
1. Whether the inner/outer chain is deformed, cracked, embroidered
2. Whether the pin is deformed or rotated, embroidered
3. Whether the roller is cracked or damaged. Excessive wear
4. Whether the joint is loose and deformed
5. When running, there is no sound or abnormal vibration, whether the lubrication condition of the chain is good
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