In the mechanical transmission system, the serpentine spring is responsible for transmitting torque and buffering. It has good shock absorption, long service life, large range of bearing variable load, safe starting, high transmission efficiency, reliable operation, low noise, good lubrication, simple structure, convenient installation and disassembly, and allows large installation deviation.

Serpentine spring is also known as coupling spring. Serpentine spring coupling is a kind of metal with advanced structure. It transmits torque by serpentine spring. The serpentine spring coupling is the most advanced shaft connection transmission component in the international machinery field, and is also a very common shaft connection transmission component.