are high-performance motion control couplings designed to facilitate torque transmission while accommodating some shaft misalignment. They are designed to handle speeds of up to 10,000 rpm. The couplings are made to transmit torque tangentially between thin stainless discs (placed in a pack) and bolts. The flexibility of the disc couplings come from the deformation of materials between bolts.
There are two main variations of disc couplings: double discs and single disc. The single disc couplings are designed with two hubs
made of aluminum/ stainless steel and spring made of stainless steel. In the case of double disc coupling, the design also features two hubs. However, an additional spacer is added to sandwich the two-disc springs. The spacer can be designed of the same material as the hubs or an electrically isolating material.
In addition to the design, the two types of disc couplings also handle misalignment differently. The single disc coupling handles little misalignment because of the flexing limitations of the lone disc. But in the case of the double disc coupling model, the double-disc makes it possible to flex in varying directions.