Which component is necessary for reducing vibration in rotating machinery?

A flexible coupling is essential for reducing vibration in rotating machinery because it allows for some degree of misalignment between the shafts it connects. This adaptability helps to absorb shocks and vibrations that occur during operation, decreasing the overall stress on the machinery and prolonging the life of mechanical components.

In contrast, rigid base mounts do not provide any flexibility, which can transmit vibrations directly to the base structure and potentially lead to increased wear and noise. Heavy-duty supports may provide stability but do not inherently dampen vibrations. Steady bearings, while they can support the load and maintain alignment, do not offer the necessary flexibility to absorb and mitigate the vibrations produced during the machinery's operation. Thus, the flexible coupling stands out as the key component for addressing vibration issues effectively.