The Headache of Broken Cables in Moving Parts
You know the problem. You have a machine that moves. It swings left, it swings right, it goes up and down. Inside that machine, you have cables in a drag chain. But after a few months, the cables break. The copper wires snap inside the plastic jacket. The signals get messy. Your machine stops working. You have to open the cover and fix it. This costs you time and money. You need a cable that does not crack. You need a cable that bends a million times and stays strong. This is why we built this 24-core LiYY-FD cable. It is made for tough jobs. It uses very thin copper wires to stay flexible. It has a special jacket to stop wear and tear. Let’s look at why this cable is the right choice for your factory.
What is LiYY-FD Fine Stranded Cable?
This is not a normal wire. It is a special data cable for control systems. The name “LiYY-FD” tells us it is a flexible cable for data transmission. The “FD” part is important. It means “Fine Stranded” or “Highly Flexible”. Inside the cable, you do not find one thick solid wire. You find many tiny wires twisted together. Think of a rope. A thick rope is hard to bend. But a rope made of many thin threads is very soft. This is how this cable works.We use 24 cores inside one cable. Each core has a cross-section of 0.25 square millimeters. This size is perfect for control signals. It is small enough to fit in tight drag chains. But it is strong enough to carry data from sensors and encoders. The conductor is bare copper. We use Class 5 flexible copper wire. This means the wire can bend and twist without breaking. The insulation is PVC. The outer sheath is also PVC or PUR. This protects the wires from oil, water, and dirt.
Why Bending Radius Matters for Drag Chains
When you put a cable in a drag chain, it bends. It bends when the machine moves forward. It bends when the machine moves back. If the cable is too stiff, it fights the chain. This causes friction. Friction causes heat. Heat melts the plastic. Then the cable fails.Our cable has a very small bending radius. The minimum bending radius is 10 times the outer diameter (10D). Some versions can even go down to 6D or 8D depending on the shield. What does this mean for you? It means the cable can make sharp turns. It can curl up tight inside the chain without kinking. You can use this in bridge-type drag chains or closed-type drag chains. It moves smoothly. It does not get stuck. It keeps the data flowing even when the machine is moving fast.
Tensile Strength and Flex Life
Drag chains pull on cables. When the machine moves away, it pulls the cable. If the cable is weak, the copper wires stretch and break. This is called tensile failure. Our cable is built to resist this. We use a special stranding process. The wires are twisted in a way that distributes the stress.The tensile strength is high. It can handle the weight of the cable itself plus some external force. But more importantly, it has high flex life. Flex life means how many times it can bend before it breaks. Standard cables might handle 100,000 cycles. Our LiYY-FD cable can handle millions of cycles. It is tested for dynamic stress. This makes it perfect for robotic arms. Robots move fast. They need cables that can keep up. This cable does not fatigue easily. It lasts for years in high-cycle applications.
Technical Specifications You Can Trust
We make our cables to strict standards. Here are the real numbers for this 24-core model:
- Conductor Material: Bare copper, fine stranded (Class 5 VDE 0295)
- Number of Cores: 24 Cores
- Cross-Section: 0.25 mm² per core (Approx 24 AWG)
- Insulation Material: PVC (Polyvinyl Chloride)
- Sheath Material: PVC or PUR (Polyurethane) – PUR is better for oil resistance
- Color: Black (Standard), Grey, or Custom
- Rated Voltage: 300/300V (U0/U)
- Test Voltage: 1500V / 2500V
- Temperature Range:
- Fixed: -30°C to +70°C
- Flexing: -5°C to +70°C
- Min. Bending Radius: 10 x Outer Diameter (Fixed) / 12 x Outer Diameter (Dynamic)
- Oil Resistance: Limited oil resistant (PVC), High oil resistant (PUR option)
- Shielding: Optional copper braid or foil shield for EMI protection
- Outer Diameter: Approx 10mm – 14mm (Depends on insulation thickness)
Where to Use This Cable
You can use this cable in many places. It is great for CNC machines. The spindle needs to move. The tool changer needs to move. This cable handles the vibration and the motion. It is also good for conveyor belts. The belt moves all day. The cable in the drag chain moves with it.Another good place is robotic welding cells. Sparks fly. The robot arm moves constantly. The cable needs to be tough. It needs to resist abrasion. Our PVC sheath is wear-resistant. It slides against the plastic chain links without getting scratched.You can also use it for:
- Glass processing machinery
- Woodworking machines
- Packaging machines
- Overhead cranes and festoon systems
- Automatic storage and retrieval systems (AS/RS)
If the environment is wet, this cable is okay for damp rooms. But if it goes outside, you need UV protection. Standard PVC is not for direct sunlight. For outdoor use, ask about our PUR or special UV-stable PVC jackets.
Shielding and Signal Stability
You have 24 cores in one cable. That is a lot of signals. If they get close to each other, they can interfere. This is called crosstalk. It makes your data wrong. The sensor says “1” but the computer reads “0”. To fix this, we add shielding.We can add a copper wire braid. We can also add an aluminum foil shield around each pair or the whole cable. The shield catches noise from the outside. It stops the noise from getting into your data wires. This is very important for encoder signals. Encoders need clean power and clean signals to work right. If the signal is noisy, the machine loses position. It crashes. Our shielded LiYY-FD cable keeps the signals clean. It grounds the noise away.
Flame Retardant and Safety
Safety is important in factories. If a cable catches fire, it spreads fast. It makes toxic smoke. Our cable is flame retardant. It meets the IEC 60332-1 standard. This means if you hold a flame to it, it stops burning when you take the flame away. It does not drip burning plastic. This keeps your machine safe. It gives your workers time to react if there is a short circuit.
Easy to Install and Strip
A good cable is easy to work with. The outer sheath strips cleanly. You do not need special knives. A standard stripper works fine. The insulation on each core also strips easy. This saves your electricians time. If you have to fix a wire, you can do it fast.The cable is light. It does not weigh down the drag chain. Heavy cables make the machine slow. They use more energy. This cable is light but strong. It helps your machine run faster and save power.
Why Choose Our Factory?
We are a professional cable factory. We do not just resell. We make the copper wire. We draw the copper. We twist the strands. We extrude the plastic. We control every step.We have many colors. We can print numbers on the cores. This helps you identify wire 1, wire 2, up to wire 24. You don’t have to use tape tags. This saves setup time.We test every batch. We check the resistance. We check the insulation. We bend samples in a lab machine to make sure they last. We only sell cables that pass our tests. We offer samples. You can test 10 meters first. If it works, you buy more. We support OEM. We can put your brand on the package.
Get Your Quote Today
You need a reliable cable. You cannot afford downtime. This 24-core LiYY-FD drag chain cable is the solution. It has the fine strands for flexibility. It has the strength for tension. It has the PVC or PUR jacket for protection.We have stock for standard colors. We can make custom colors fast. The price is good because we are the factory. We ship by sea or by air. DHL and FedEx are fast for samples. Sea freight is cheap for big orders.Do not wait for your old cables to break. Upgrade now. Click the “Send Inquiry” button. Tell us your voltage needs. Tell us if you need shielding. Tell us the length you want. We will send you a quote in 24 hours. Let’s solve your cable problems together.