How to install the coupling

　　Couplings are mechanical parts used to connect two shafts (active shaft and driven shaft) in different mechanisms to rotate together to transmit torque.In high-speed and heavy-load power transmission, some couplings also have the function of buffering, damping and improving the dynamic performance of the shafting.The coupling is composed of two halves, which are respectively connected with the driving shaft and the driven shaft.The general power machine is mostly connected with the working machine by means of a coupling.
　　When the coupling is installed on the shaft, the common installation methods are static press-in and dynamic press-in. The verticality and coaxiality of the coupling and the shaft should be carefully checked.Generally, it depends on whether the fit of the shaft is transition fit or interference fit. Now let’s introduce the installation methods of static and dynamic press-in methods:
　　(1) Static press-in method: This method is based on the size of the press-in force required during assembly, using clamps, jacks, manual or motorized presses. The static press-in method is generally used for tapered shaft holes. .Because the static press-in method is restricted by the pressure machine, it is difficult to apply a large force when the interference is large.At the same time, the uneven small peaks on the mating surface between the coupling and the shaft will be cut off during the press-in process, causing the mating surface to be damaged.Therefore, this method is generally not widely used.
　　(2) Power press-in method: This method refers to the use of impact tools or machinery to complete the assembly process. It is generally used in situations where the coupling and shaft fit is transitional or has little interference.The assembly site usually uses a hand hammer to beat it. The method is to put wooden blocks or other soft materials on the end surface of the hub as a buffer, and rely on the impact force of the hand hammer to knock the coupling in.