Star-shaped elastic coupling is made of engineering plastic as elastic element, which is suitable for connecting two coaxial transmission shafts. It has the properties of compensating the relative deviation of two shafts, buffering, damping and wear resistance, and is suitable for general occasions. It transmits torque of 20-35,000. N.m, and the working temperature is -35-+80 degrees Celsius, and it is interchangeable with German ROTEX coupling. Polyurethane elastomer is limited by convex claw blocks.