A jaw coupling is a type of flexible coupling designed to connect two shafts while accommodating misalignment and damping vibrations. It consists of three components: two metal hubs with interlocking jaws and an elastomer insert (called a spider) placed between them. The elastomer spider absorbs shocks and compensates for angular, radial, and axial misalignments, ensuring smooth torque transmission. Jaw couplings are widely used in applications such as pumps, compressors, and conveyors, valued for their simplicity, durability, and ability to reduce noise and wear in rotating machinery.