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The impeller itself typically does not have a key; instead, it is often attached to a shaft using a keyway and key mechanism. This key fits into a slot on both the shaft and the impeller, ensuring a secure connection and allowing the impeller to rotate with the shaft. In some designs, however, impellers may be secured using other methods, such as threaded connections or set screws.

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4mo ago

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If the key between the impeller and shaft is not present, the impeller may not be securely attached to the shaft, leading to slippage during operation. This can cause a loss of rotational force, resulting in reduced pump efficiency and potentially damaging the equipment. Additionally, vibrations and misalignment may occur, increasing the risk of mechanical failure and costly repairs. Overall, the absence of the key compromises the integrity and performance of the system.


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