The cable drag chain, also known as a cable carrier, is designed to protect and guide cables, hoses, and pipes while they move with the equipment. It works by enclosing these components within a flexible, modular structure that moves in sync with the machine. The drag chain resembles a tank track and is made up of interlocking segments that rotate freely, allowing smooth movement without damaging the internal components. Each segment can be opened for easy installation or maintenance, eliminating the need to thread cables through the entire system. Once the cover is removed, cables, oil lines, air lines, and water lines can be inserted directly into the chain.
Cable drag chains used in machine tools are typically available in two main types: plastic and steel. Plastic drag chains are lightweight and suitable for less demanding environments. Common plastic models include 7×7, 10×10, 10×15, 15×15, 15×20, 15×35, 18×18, 18×25, 18×35, 18×50, 25×25, 25×38, 25×57, 25×77, 25×103, 35×50, 35×60, 35×75, 35×100, 35×125, 45×50, 45×60, 45×75, 56×95, 56×125, 56×175, 56×200, 56×300, and various series such as 55, 62, 65, and 80.
Steel drag chains are more durable and suitable for heavy-duty applications. They come in models like TL45, TL65, TL95, TL125, TL180, TL225, and TL250. These chains can be customized in width based on specific needs, and their bending radius ranges from 50mm to 800mm. There are three types of support plates: solid support plates for high-load applications, separate support plates for frequent disassembly, and frame-type support plates for multiple cable configurations.
When selecting a drag chain, several factors should be considered:
1. **Height**: Choose the tallest component (such as a pipe or cable) as the reference height and add at least 10% extra space inside the chain to allow for free movement.
2. **Width**: Calculate the total outer diameter of all components (oil pipes, gas pipes, etc.) and ensure the inner width of the drag chain has at least 10% extra space.
3. **Bending Radius**: Use the largest bending radius of the internal components as the minimum requirement for the drag chain, and leave at least 10% extra space for flexibility.
4. **Internal Arrangement**: Leave 10–15% of the space inside the chain for cables, pipes, and hoses to move freely, reducing tension and preventing damage during operation.
5. **Large Diameter Cables**: If there are significant differences in cable diameters, it's best to install them separately and use spacers to balance the weight distribution.
6. **High-Speed Applications**: For high-speed or high-frequency operations, cables and hoses should be kept separated to avoid interference. If many components are present, using spacers is highly recommended.
By following these guidelines, you can ensure optimal performance, longevity, and safety of the drag chain system in your machine tool application.
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**Tag:** Machine Tool Cable Chain
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