The original slip rings of Xi'an Simo Motors are finely processed with cast copper windings, which have high hardness, low resistance, and are resistant to wear. The insulation materials are made of epoxy resin and alkali-free glass fiber cloth, which are impregnated, poured, laminated, and formed. They have good insulation performance, are resistant to compression and impact. The resin is oil-resistant, anti-oxidative, heat-resistant, and has good aging performance.

The slip ring is an electrical component responsible for connecting and transmitting energy and signals to the rotating body. According to the transmission medium, slip rings are divided into electrical slip rings, fluid slip rings, and smooth slip rings, and can also be commonly referred to as "rotary connection" or "rotary communication". Slip rings are usually installed at the center of rotation of the equipment and mainly consist of two parts: the rotating part and the stationary part. The rotating part is connected to the rotating structure of the equipment and rotates with it, which is called the "rotor", and the stationary part is connected to the energy source of the fixed structure of the equipment, which is called the "stator".
The slip ring, also known as the rotary electrical interface or electrical rotary joint, can be used in any electrical system that requires unrestricted continuous rotation to transmit power and data signals from the fixed structure to the rotating structure.
The overall slip ring relies on the principle of elastic lapping, the principle of rolling lapping, or the principle of sealing, as well as the ingenious design of the motion structure and sealing structure, the precise production and matching of parts, and the reasonable selection of materials, etc., to form a stable and reliable rotary connection system. As long as the slip ring is attached to the infinitely rotating equipment, it can provide power energy for the rotating body, enabling the rotating body to perform other movements while rotating infinitely or detect the working conditions in the rotating state.

In modern times, in the high-end fields of industrial equipment, there are often requirements for multiple relative movements such as revolution and rotation. That is, while the mechanical equipment is rotating continuously at 360°, the rotating body also needs multiple movements. Where there is movement, there is a need for energy sources, such as electrical energy sources, fluid pressure energy sources, etc. Sometimes, there is also a need for control signal sources, such as optical fiber signals, high-frequency signals, etc. Any electrical components that rotate continuously at 360° relative to each other and need to transmit functional power sources, weak electrical signals, optical signals, air pressure, water pressure, oil pressure, and other different energy media to ensure that the electrical appliances can move freely during the rotating movement of the electromechanical equipment must use a rotary connection device.

Also known as "collector rings" or "bus rings". Decades ago in China, there were already mature design technologies and manufacturing factories. They mainly transmit large currents and use the technology of carbon brushes closely attached to copper rings. Disadvantages: They are limited to transmitting large currents, and a large amount of carbon alloy powder is generated due to friction, so the carbon brushes need to be cleaned or replaced regularly. Due to the rapid development of modern precision electronics and precision electromechanical products, precision electrical slip rings have emerged as the times require. They were originally specially used in ultra-high-end fields such as aviation and aerospace, and now they are widely used in civil precision electronics and electrical equipment. Some series have been made into general electrical accessories.
Electrical slip rings are the most widely used among all slip ring series. They are also called brushes, carbon brushes, collector rings, current collector rings, bus rings, rotary communication, and rotary electrical joints. They are specially used to transmit power sources and signal sources during unrestricted continuous rotation. The stator and rotor parts respectively lead out wires to connect the power sources of the fixed structure and the rotating structure and the terminal electrical appliances, and rotate with them. According to the differences in their overall structures, they are divided into solid circular slip rings (a hole is dug in the rotating body to install the slip ring) (as shown in the figure), hollow circular slip rings (the slip ring is installed on the rotating shaft) (as shown in the figure), as well as separated slip rings, flat disc slip rings, mercury slip rings, special-shaped slip rings, and so on.

Slip rings are mostly used in high-end industrial electrical equipment or precision electronic equipment with multiple functions, high performance, high precision, and multiple continuous rotating movements, such as aerospace equipment, radar communication equipment, medical equipment, automatic processing equipment, smelting equipment, mining equipment, cable equipment, amusement equipment, display equipment, intelligent cameras, chemical reaction kettles, crystal furnaces, wire stranding machines, wind turbines, robotic arms, robots, tunnel boring machines, revolving doors, measuring instruments, model aircraft, special vehicles, special ships, etc. Slip rings provide reliable energy and signal transmission solutions for these electromechanical equipment to achieve complex movements. It can also be said that slip rings are a symbol of advanced intelligent moving equipment.
Slip rings can also be made into various special shapes according to the usage situation, and can mix and transmit power sources, light sources, fluid pressure sources, or be used in combination with other electrical components, such as special abnormal shapes, extra-large shapes, integrated gears, sprockets, pulleys, plugs, a mixture of power sources and light sources, a mixture of power sources and pressure fluids, and be equipped with optical, electrical, acoustic, and temperature sensors, optical fiber transceivers, pressure gauges, pneumatic components, etc., to form a multi-functional electrical assembly to meet the special requirements of saving space and simplifying the design structure.