How to Determine the Size When Customizing the Through-Hole Slip Rings?

 Overview

Among various slip rings, the through-hole slip ring has found extensive application due to its hollow structure. Cause this enables it to be expeditiously mounted onto the rotating shafts of equipment. And when customizing through-hole slip rings for devices like radar antennas, anti-drone systems, people select them with different sizes, materials with other parameters. So, do you know what are related to the through-hole slip ring size, and how we determine its appropriate size?

 

The Size of Through Bore Slip Ring Refers to:

When we talk about its size, we are actually referring to the following parameters:

1. Inner Diameter: The inner diameter of the through-hole slip ring is the diameter of the central hole in its structure. It also represents the size of the shaft that can pass through the slip ring. Typical inner diameter values are 12.7mm, 25.4mm, 38.1mm, 50.8mm and so on.

2. Outer Diameter: The outer diameter of the slip ring refers to the maximum diameter of the entire slip ring, including all parts such as the outer casing, conductive rings, and insulation layers. The outer diameter is often proportional to the inner diameter.

3. Length or Thickness: This refers to the dimension of the through-hole slip ring in the vertical direction. Different thickness designs of the slip ring are used to accommodate different numbers of circuits and insulation layer designs. Generally speaking, under the same diameter, the more circuits there are, the thicker the slip ring will be.





Factors to Determine Its Size

When customizing through-hole slip rings, we generally determine their size by the followings:

1. Equipment Structure

lEquipment Shaft Diameter: The inside diameter of the through-hole depends on the diameter of the shaft or cable that needs to pass through the slip ring, and should be slightly larger than the diameter of the equipment shaft. In addition, if the slip ring is to be mounted on the shaft as a kit, or if fixtures or guards are to be added, the inner diameter of the slip ring will need to allow room for them as well.

lSpace Inside the Equipment: If the space inside the equipment is compact, such as small precision instruments or portable equipment, it is necessary to choose a slip ring with a smaller outer diameter. In addition, if the equipment is also designed with a mounting slot or fixed bracket, the length of the slip ring should be able to be installed in this space, rather than too long or too short.

2. Slip Ring Performance

lNumber of Circuits: An increase in the number of circuits results in larger slip ring sizes because they require more space for the conductive rings and insulation. For example, the rotary table of a large CNC machine tool requires at least 20 - 30 circuits to accommodate circuits such as power, control signals, and sensor signals.

lCircuit Type (Power and Signal): In high power circuits, we need to make sure that the through-hole slip ring can carry a large amount of current without overheating. The solution is to increase the size of the conductive ring or upgrade its material. However, this will also make the conductive part of the slip ring larger and increase its thickness.

3. Operating Conditions

lCentrifugal Force: Centrifugal force is generated when slip rings rotate at high speeds. It needs to have enough mechanical strength to withstand the centrifugal force. In this case, we need to choose a larger size and stronger structure to resist the centrifugal force.

lHeat Dissipation Requirement: When rotating at high speed, the through-hole slip ring will generate heat due to the constant friction of the internal parts. We can set up heat sinks or ventilation channels inside to solve the heat generation problem. But this will also increase its size.

lWorking Environment: In high temperature, humid, or dusty industrial environments, slip rings maintain stable operation by achieving high IP ratings, such as IP65, IP68, which are achieved by the addition of mounted insulation, cooling devices, or sealing structures. If through-hole slip rings are to accommodate these components, larger lengths are required.

 

Conclusion

In conclusion, when talking about through-hole slip ring sizes, we are talking about their inside diameter, outside diameter and length. And when we custom them, it's essential to consider the structure of the device where the slip ring is located, circuit requirements, operating speed, and working environment. If you are still confused, don’t worry, we're here to help you! More relevant information can also be found in our article “Some Details about Through Hole Slip Ring’s Size & Dimension”.

 

评论

发表评论

此博客中的热门博文

Common Problems of Slip Rings and Countermeasures

图片
In numerous industrial equipment and systems, slip rings connect and transmit electric current and rotating signals. However, like other mechanical components, slip rings may encounter some malfunctions. Today, let's understand these problems together and master the corresponding solutions! Poor Contact During the rotation of a surveillance camera, the image may suddenly become blurry, stutter or even completely disappear. In a production line, the motor may also operate unstably, sometimes speeding up and sometimes slowing down, or making abnormal noises. These phenomena may be caused by insufficient pressure between the brush of the slip ring and the conductive ring. The main reason is that the brush wears out after long-term use or the pressure was not adjusted properly during installation. Or perhaps dust, moisture, etc. in the working environment have entered the inside of the slip ring. Solutions: We can use special cleaners and tools to remove the dirt and oxide layer on it...
阅读全文

How to Determine the Quality of Through Hole Slip Ring?

图片
Overview Learning how to determine the quality of through hole slip ring s can help us find the most suitable slip rings. It includes a number of checks and tests: Appearance Inspection : This is the most basic inspection method. We ensure that the size of the through hole slip ring meets the standard by visual inspection or using measuring tools. And after removing the damaged, deformed, and worn defective products, we strictly check according to the technical drawings. Signal Transmission Interference Test : Technicians use professional equipment such as signal generators, spectrum analyzers, oscilloscopes, and electrostatic discharge generators to check whether the slip ring can transmit signals stably. During this process, the through hole slip ring should not generate obvious noise, distortion, and interference. This test can ensure the accuracy of the slip ring signal in a complex electromagnetic environment. This is important for high-precision industries such as medical and aer...
阅读全文

Slip Ring Design: What are the Key Parameters?

图片
  As a connecting component of various electromechanical devices, slip rings   can transmit power and electrical signals from a fixed structure to a rotating structure. When we design slip rings, whether in standard or custom specifications, we need to select the suitable parameters to ensure their normal operation. So, do you know what important parameters slip rings have? Electrical Parameters 1. Number Of Circuits The number of circuits of a slip ring refers to the number of independent signal channels that can be transmitted simultaneously. For example, a 10-circuit slip ring can transmit 10 different signals simultaneously. The more circuits there are, the more complex the structure of the slip ring becomes and the more difficult it is to manufacture. At the same time, it may also affect the stability of the slip ring, because more signal channels mean more potential failure points.   2. Rated Current/Voltage l Rated Current:   It refers to the maximum current a...
阅读全文