What does a flexible coupling allow for in a power transmission system?

In a power transmission system, a flexible coupling's primary function is to accommodate misalignment between connected shafts. Misalignment can occur due to several factors, such as thermal expansion, mounting errors, or operational vibrations. A flexible coupling is designed specifically to absorb these variations, ensuring that the shafts maintain a consistent connection even when they are not perfectly aligned.

This capability promotes smoother operation and reduces stress on the machinery, enhancing the longevity and reliability of the system. Couplings that can handle misalignment include various types such as elastomeric, universal, and grid couplings, each tailored to specific applications and degrees of flexibility. This flexibility directly contributes to the overall efficiency and performance of the power transmission system.