Elastic Pin Couplings

Elastic pin coupling is a device that uses several non-metallic elastic materials to make column pins, which are placed in the flange holes of the two halves of the coupling, and connect the two halves of the coupling through the column pins. Its structure is simple, easy to manufacture, and the installation, disassembly, and replacement of elastic components are relatively convenient, without the need to move the two couplings. The elastic element (pin) of the elastic pin coupling is generally made of non-metallic materials such as nylon 6.

Features:
It has the ability to compensate for slight offset of two axes.
During operation, the elastic components are subjected to shear, resulting in relatively poor reliability, and are only suitable for medium speed transmission shaft systems with very low requirements.
The structure is simple and reasonable, easy to maintain, symmetrical and interchangeable on both sides, and has a long service life.
Allow for significant axial movement and possess properties such as buffering, shock absorption, and wear resistance.

Elastic pin couplings are suitable for various coaxial transmission systems, such as marine main and auxiliary engines, internal combustion engines, diesel couplings, electric motors, and hydraulic motors that drive various power devices for shaft connections. Meanwhile, it is also commonly used in small and medium power transmission shaft systems, as well as in situations that require buffering and shock absorption. Due to the relatively poor reliability of the elastic pin coupling, it is not suitable for working conditions with high reliability requirements, such as the transmission shaft system of the lifting mechanism of lifting machinery. In addition, it is not suitable for low-speed load-bearing and transmission shaft systems with strong impact and vibration, as well as working conditions with large radial and angular offsets and transmission shaft systems with low installation accuracy.

When installing the elastic pin coupling, ensure the coaxiality of the two halves of the coupling and avoid excessive radial and angular offsets. At the same time, suitable pin materials and sizes should be selected to ensure the normal operation of the coupling. Regularly check the wear of the elastic pin coupling and replace the severely worn pins in a timely manner. At the same time, the coupling should be kept clean and lubricated to avoid damage caused by debris and dry friction.