Diaphragm Couplings Diaphragm couplings use a single or a series of plates or diaphragms as versatile components. It transfers torque from the outer diameter of the flex plate to the inner diameter, by way of the spool or spacer, and then from the interior diameter to the outer diameter. When the diaphragm is subjected to misalignment, the outer diameter is deflected relative to the inner diameter. For illustration, axial displacement attempts to extend the diaphragm, which benefits in a combination of elongation and bending of the diaphragm profile. Angular, parallel and higher axial misalignment permitted Perfect for large torque, high pace purposes