The elastic coupling mainly consists of two convex teeth that are closely meshed and bear radial extrusion to transmit torque. 

When the two axes are relatively offset, the elastic element undergoes corresponding elastic deformation and plays an automatic 

compensation role. Elastic couplings have good balancing properties and are suitable for high-speed applications, but cannot 

handle large deviations, especially axial deviations. Large eccentricities and deflection angles will produce greater bearing loads 

than other couplings.

Once the elastic spacer is damaged or fails, the torque transmission will not be interrupted. At the same time, the metal claws of 

the two bushings are meshed together to continue to transmit torque, which is likely to cause problems in the system. For high-speed 

transmission shafts, couplings with high balance should be selected instead of couplings with eccentricity. The size and nature of the 

transmitted torque and the requirements for vibration buffering function are also required.

The elastic coupling can compensate for the axial, radial and angular offset between the main motor and the driven machine caused 

by manufacturing errors, installation errors, load-bearing deformation and temperature rise changes. The elastic coupling relies on 

metal elasticity. It is used to connect the main and slave motors to transmit torque. It has the characteristics of elastic vibration 

damping, no noise, no need for lubrication, and small reaction force during radial displacement.

The elastic coupling is composed of two half couplings with the same shape of the lugs and an elastic element. The elastic element is 

placed between the lugs of the two half couplings to realize the connection of the two halves of the coupling. The elastic coupling has 

the characteristics of compensating the relative offset of the two axes, damping, and buffering. When replacing the elastic element, the 

two half couplings need to move in the axial direction. It is suitable for connecting two coaxial lines and is suitable for working parts that 

require high workability. Heavy load and limited axial size.