Slip ring, commonly known as rotary communicator or rotary device. Always divided into: electric slip ring, fluid slip ring, fiber optical rotary joint. Components is rotor side or stator side.

It’s an electrical component that communicates and transmits power energy and signals to a rotating body . Slip ring is the electrical component responsible for connecting and conveying energy and signals to the rotating body. According to the transmission medium to distinguish, slip ring is divided into electric slip ring, fluid slip ring, fiber optic rotary joint or slip ring, also commonly referred to as "rotating connected" or "commutator". The slip ring is usually installed in the rotating center of the equipment, which is mainly composed of two parts: rotor parts and statory side.  The rotating part connects the rotating structure of the device and rotates with it, called the "rotor", while the stationary part connects the energy of the fixed structure of the device, called the "stator".