These are elastomer in compression type couplings. A single piece elastomer (Spider type, Snap-wrap type coupling) is used for low to medium horsepower applications, while individual elastomeric elements are used for high horsepower application (T cushion type coupling).
Jaw coupling is a failsafe design, designed for positive torque transmission. The small size and weight of coupling means low mass moment of inertia. The elastomeric component provides torsional flexibility and damping to the system reducing effect of vibrations and operational shocks. This coupling is capable of compensating for axial, parallel and axial misalignment. The raised dimples on the elastomeric element improve the couplings capability under “inward” thrusts produced by applications.