What are the Functions of Through Hole Conductive Slip Rings?

 Overview

Through-hole slip rings can be seen everywhere in our lives, including industrial automation, wind turbines, medical equipment, radar equipment and other fields. This slip ring can improve the use status of various rotating equipment. So do you know what it is specifically and what functions it has?


What is a Through Hole Slip Ring?

Through-hole slip rings are also called hollow shaft slip rings. Similar to other slip rings, this type of slip ring also uses brushes and contacts to transmit current, signals and other data from a fixed position to a rotating position. It is characterized by a through hole in the center, so it can be directly put on the rotating shaft of the equipment and fixed for use. This also means that through-hole slip rings also leave space for other operating components, allowing pipes or cables connected to rotating parts to pass through this center hole.

 


How Does a Through Hole Slip Ring Work?

The working principle of through-hole slip ring is relatively simple. It mainly transmits current or signals through the physical contact between the brush and the conductive ring. The details of these two parts are as follows:

lConductive Ring: Common conductive ring shapes include circular and annular shapes, and are made of conductive metals such as copper, silver-copper alloy, and tin bronze. It is the carrier of current or signal transmission, installed on the rotating part of the slip ring, and can rotate with the rotating part.

lBrush: The shape of the brush is usually filamentary, block-shaped or brush bundle-shaped. Their common materials include graphite, electrochemical graphite, metallic graphite, pure metal, etc. The brush is installed on the stationary part of the slip ring, and when the conductive ring rotates, the brush maintains sliding contact with the surface of the conductive ring.

Before the device is started, the two are in a relatively static state, but maintain contact with a certain pressure to prepare for signal transmission. When the device rotates, the conductive ring part rotates with it, while the brush remains stationary. In this process, current or signal can be transmitted from the stationary part of the device to the rotating part.


 

What is the Function of a Through Hole Slip Ring?

lConducting Power and Signals: Through-hole slip rings can transmit power and various signals, including, for example, AC power, DC power, control signals, etc. Its conductive rings and brush assemblies are made of conductive metal. Therefore, current or signals can be input from one end of the device and transmitted to the other end through the contact between the conductive ring and the brush to form a continuous transmission.

lConnecting Control Equipment: When the slip ring is connected to the mechanical part of the rotating equipment, it guides the equipment to make various reactions, such as acceleration, rotation, steering, etc. The control signal is transmitted from the stator to the rotor through the contact between the conductive ring and the brush of the slip ring, and then transmitted to the rotating mechanical part.

lSignal Adaptation and Conversion: It can also adapt and convert signals according to the device. For example, convert signals of different voltage levels, or convert digital signals into analog signals. Some models of through-hole slip rings are also equipped with signal processing circuits to filter, amplify, and isolate the transmitted signals.

lReduce Cable Tangling: When using long cables to connect devices, the cables of the devices will be entangled as they rotate. The central through hole of the slip ring allows it to be installed on the central axis of the device, making the wiring simpler and neater, reducing the confusion and entanglement of cables.

 

Summary

In general, through-hole slip rings provide a variety of functions, including transmitting power and signals, controlling equipment, reducing wire entanglement, etc. You can also learn more about its features through our website. As a slip ring manufacturer with more than 26 years of operation, ByTune has professional R&D and production experience.

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