Elastomeric Pin Gear Coupling

The elastic pin gear coupling is a power transmission connection component based on a gear meshing structure combined with the buffering characteristics of non-metallic elastic pins. It is mainly used for power transmission in low to medium speed applications. In industrial transmission systems, it performs a comprehensive function of connecting the driving shaft and the driven shaft, transmitting torque, compensating for misalignment, and buffering vibration. It is particularly suitable for working conditions with large impact loads or shaft misalignment. Compared with traditional rigid couplings, this type of coupling has stronger compensation ability and better vibration resistance; compared with general elastic couplings, its gear meshing structure enables more stable torque transmission and higher efficiency, making it widely used in industries such as mining, metallurgy, chemical engineering, construction machinery, and power generation.
The core feature of the elastic pin gear coupling lies in the direct transmission of torque through gear tooth meshing, while the non-metallic elastic pins play the role of “elastic buffering” during torque transmission. Specifically, the driving shaft drives the driving gear sleeve to rotate, and the torque is transmitted to the driven gear ring through the elastic pins, thereby driving the driven shaft to rotate. During this process, the deformation of the elastic pins can absorb impact energy caused by start-up, braking, or load fluctuations, and compensate for radial, axial, and angular misalignments, thereby reducing system vibration and noise and improving the stability and reliability of equipment operation.
In practical applications, the elastic pin gear coupling has formed a relatively complete model system, with mainstream models such as LZ, ZL, LZD, ZLD, LZZ, and ZLL, covering different shaft diameters, center distances, and load capacities. Some models emphasize compactness and standardization in structure, suitable for equipment with limited space and relatively stable loads; other models strengthen gear tooth strength, elastic pin specifications, or connection methods to adapt to heavy loads, frequent start-stop cycles, or working conditions with large axial displacement.