Cause: Excessive force during installation or mating causes instantaneous stress concentration and leads to plastic shell cracking.
Solution: Install and mate with gentle operation, take and place the connector carefully to avoid brute force operation.
Cause: When the ambient temperature is lower than -40℃, the plastic material becomes brittle and cracks due to slight impact or extrusion.
Solution: Customize connectors with low temperature resistant and toughened material shells for ultra-low temperature application scenarios.
Cause: The shell is made of low-quality recycled materials with insufficient mechanical strength and poor toughness, which is easy to crack under normal use.
Solution: Replace with brand new original factory connectors, select genuine products with pure raw material shells to ensure material strength.
Technical Note: Cracking of plastic shell M9 connectors is irreversible damage and cannot be repaired by bonding; it is recommended to select original factory connectors with material certification, and standardize on-site operation to avoid unnecessary mechanical damage to the shell.
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