The plum club coupling has the characteristics of compensating the relative displacement of two shafts, reducing vibration, buffering, small radial size, simple structure, no lubrication, high bearing capacity, easy maintenance, etc., but the two half couplings need to move along the axis when replacing the elastic elements.

The star elastic coupling is made of polyurethane and rubber as elastic components, suitable for connecting the two shafts of the transmission shaft system, with the characteristics of compensating the relative offset, buffering, shock absorption and wear resistance of the two shafts.

Star elastic coupling is sometimes mistaken for the coupling of clubs and their similar structure, the appearance of after installation is almost similar, the difference is that the shape of the elastic element, star and the plum flower form, respectively, are generally by rubber elastomer, polyurethane, but star elastomer properties of elastic coupling is lower than the plum coupling for star elastic coupling elastic piece is too thin, elastic deformation is too small, the performance is lower than plum coupling. However, under the same model, the star elastic coupling can withstand greater torque, compared to the plum coupling, its inner hole and shape can be smaller. Star elastic couplings are suitable for more precise applications, such as precision instruments, precision machine tools.