The FCL type elastic sleeve column pin coupling is designed to compensate for relative offsets between two shafts, making it ideal for medium to high-power applications. However, it is not appropriate for applications where stringent vibration reduction and noise control are essential. This coupling utilizes several non-metallic column pins, which are inserted into the mating holes between the two coupling halves and the inner surface of the outer ring. It achieves the coupling of the two halves by transmitting torque through these pins.