The Flexible Plum Coupling is composed of two semi-couplings with convex claws and a plum-shaped flexible non-metallic element whose hardness can be adjusted. By embedding the plum-shaped flexible element into the two semi-couplings to realize the connection, it has the characteristics of compensating the relative displacement of the two axes, reducing vibration and buffering, simple structure and easy maintenance without lubrication.
Jaw Couplings generally consist of two hubs, and an elastomer element, known as a spider or cushion. Jaw Type Couplings connect the shaft of a motor, or moveable machine to the shaft on a stationary machine. Two jaws interlock around a jaw-coupling spider to create a complete coupling.