Links function similar to disc legs, only they are thick enough to be loaded in compression on one side and in tension on the other. With two flex planes, this coupling was designed for lightly loaded, high misalignment (up to ~5° angular) applications with smooth noncyclic torque loads.
• The diaphragm coupling is considered to be stronger than the disc coupling and can be made in larger diameters than the disc coupling. (Note diameter is an indicator of torque capability.) • The diaphragm coupling is considered to have more axial displacement capability at lower forces than the disc coupling.