Grinding issue of the pin-type coupling in fans
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The vibration level of the fans in our company is increasing gradually; upon shutting down the equipment for inspection, it was found that the pins of the pin-type coupling had worn down. Could you help analyze what might be the cause?
There is a gap during uninstallation, causing looseness； Or verify whether there has been a deviation in alignment.
What’s the situation with the elastic rings on site? All polished?
Your explanation seems to be that the column pin’s load-bearing capacity is insufficient due to the torsional force exerted by the fan blades.
Check the alignment, replace the pin; if operation is normal, it can be concluded that vibration and wear are caused by alignment issues. If the vibration persists, check issues such as the fan bearings and clearances, and resolve them.
Your answer has been very inspiring to me. Thank you
Pin wear is usually a alignment issue
Such couplings lack elastic rings, and there should be moderate issues with them
This type of coupling requires a high level of alignment; wear is likely caused by poor alignment
It is recommended that you replace it with a new part and check for proper alignment; if such a coupling is not aligned, it can cause wear of the coupling’s pins, thereby significantly reducing its lifespan.