The pin coupling is a new type of high-performance coupling developed by me. It combines the advantages of the existing standard pin couplings with different structures. For example, it has the advantages of the plum-shaped pin coupling: the elastic element is compressed and the structure is Simple and highly reliable.Overcome the shortcomings of the quincunx pin coupling: when replacing the elastic element, move the half coupling, double-flange quincunx pin coupling and the moment of inertia, the application range is limited.When transmitting the same torque, the radial dimension is much smaller than that of the GB4323 pin coupling, with light weight and small moment of inertia.

　　The pin coupling has good compensation performance for axial, radial and angular axis deviation, good vibration reduction performance, simple structure, stable and reliable operation, no noise, no lubrication, simple maintenance, convenient assembly and disassembly, and good manufacturability , Low cost, can be derived into a variety of structural forms, good versatility, wide application range, easy to use and promote, one of the outstanding advantages of this coupling is that it only needs to be suitable for axis alignment and installation is difficult, and it is required to minimize auxiliary man-hours Working environment.

　　Pin couplings are usually cut from metal round bars, and commonly used materials are aluminum alloy, stainless steel, and engineering plastics.The pin coupling uses a parallel or spiral groove system to adapt to various deviations and transmit torque.Pin couplings usually have good performance and price advantages. In many practical applications of stepping and servo systems, pin couplings are the product of choice.The one-piece design enables the pin coupling to achieve the advantages of zero-clearance torque transmission and no maintenance.The pin coupling mainly has the following two basic series: spiral groove type and parallel groove type.