A conductive slip ring (also known as a rotary joint) is a device capable of transmitting electrical signals and power in a rotating mechanical system. Its principle is to transmit electrical signals and power through electrical contact between two rotating parts. Conductive slip rings usually consist of a pair of contact surfaces and a pair of insulating materials, where one pair of surfaces is fixed and the other pair rotates with the rotation of the rotating part. The current enters the slip ring through a conductor in the rotating part, then passes through the contact surface to the other rotating part, and then returns to the circuit through another conductor.
through bore slip rings are commonly used in applications that require the transmission of electrical signals and power in rotating systems such as rotating machinery, electric motors, generators, wind turbines, etc. They can also be used to rotate non-electrical signals such as video signals, digital signals and data.