Is your production line stopping because of broken cables?
You know the feeling. You hear a loud “snap” or see a spark, and suddenly your expensive automated machine stops working. You check the control cabinet, and there it is—the cable has cracked again. The outer sheath is worn out, or the copper inside has snapped from bending back and forth.This is not just annoying. It costs you money. Every minute your machine is down, you lose production. You have to pay a technician to find the part, replace it, and restart the system. If you use cheap cables, this happens every few months. It is a waste of time and money.You need a cable that moves like a snake but is tough like a tank. You need a cable designed for “dynamic applications.” This means the cable is not just sitting still. It is moving, twisting, and bending millions of times.The German Cable FD810 4-core 16 sq mm drag chain cable is the answer to this problem. It is built for the toughest jobs. It resists oil, it resists scraping, and it lasts a long time. Let’s look at why this specific cable is the best choice for your factory.
What makes this cable different from standard wires?
Most people think a cable is just copper and plastic. But for moving machines, “standard” is not good enough. The FD810 series is a “high-flex” cable. This is a special design.First, look at the copper. Inside the grey sheath, you will find 4 cores. Each core has a cross-section of 16 square millimeters. That is a lot of copper. It can carry a lot of power. But it is not just a solid stick of metal.The copper is made of many tiny wires twisted together. We call this “extra-finely stranded.” In technical terms, it is Class 6 flexibility according to IEC 60228. Imagine a rope versus a single stick. The rope bends easily. The stick snaps. This cable uses the “rope” design. The tiny wires slide against each other when the cable bends. This stops the metal from getting tired and breaking.Second, look at the layers. The copper is not bare. It has insulation. Then there is a wrapping around the cores. Then there is the inner sheath. Finally, there is the outer sheath. This “onion” design protects the electrical signal inside.
The Secret of the “FD810” Design
The name “FD810” tells you a lot. “FD” stands for “Flexible Drag chain.” The number “810” is the specific model code from the German manufacturer LAPP. This is a classic design that has been tested for decades.This is not a new, unproven product. It is a standard in the automation industry. When engineers design a new robot arm or a conveyor belt, they often specify this exact cable. Why? Because they know it works.The design focuses on three things:
- Bending radius
- Tensile strength
- Abrasion resistance
Let’s break these down in simple English.
How far can it bend without breaking?
This is the most important question for drag chains. A drag chain is a plastic track that holds the cable. When the machine moves, the cable has to bend into a curve.If the bend is too sharp, the cable dies. The FD810 has a very low bend radius. For a cable this size (4x16mm²), the outer diameter is usually around 20-22mm.When the cable is moving, it can bend into a curve that is 7.5 times its own diameter. When it is sitting still, it can bend even tighter—4 times its diameter.What does this mean for you? It means you can fit this cable into tight spaces. You don’t need a huge loop of cable hanging off the machine. You can make your machine design more compact. The cable handles the tight turns without stressing the internal wires.
It fights against oil and chemicals
Factories are dirty places. There is oil, grease, cutting fluid, and cleaning agents everywhere. Standard PVC cables get soft and sticky when they touch oil. They swell up and fall apart.The FD810 4x16mm² cable uses a special outer sheath. Depending on the exact version (like the “P” or “CY” types), it uses Polyurethane (PUR) or a special PVC mix.PUR is amazing. It is highly resistant to oil. If you drag this cable through a puddle of hydraulic oil, nothing happens. It also resists ozone and UV light. If you use it outside in the sun, it won’t crack like cheap rubber.It also resists abrasion. Imagine the cable rubbing against the plastic drag chain every second for a year. A normal cable would wear a hole in the sheath. The FD810 is tough. It takes a long time to wear down. This prevents short circuits caused by exposed copper.
Technical Specifications (The Data You Need)
You need hard numbers for your BOM (Bill of Materials). Here is the data for the German Cable FD810 with 4 cores of 16 sq mm.
- Product Code: 0026187 (or similar variant in the 0026xxx series)
- Brand: German LAPP (ÖLFLEX® brand)
- Cable Type: High Flex Drag Chain Cable
- Number of Cores: 4
- Cross-Section: 16 mm² (Approx. AWG 5/6)
- Outer Diameter: Approx. 20.2 mm – 23.0 mm (varies slightly by exact construction)
- Weight: Approx. 800 – 900 kg/km (This is heavy-duty copper)
- Voltage Rating: Uo/U = 300/500V
- Test Voltage: 2500V
- Conductor Material: Tinned Copper (Bare copper for some versions, but tinned is common for corrosion resistance)
- Insulation Material: PVC (Polyvinyl Chloride)
- Sheath Material: PUR (Polyurethane) or PVC (Grey, RAL 7001)
- Temperature Range:
- Fixed: -40°C to +80°C
- Flexing: 0°C to +70°C (Note: Some PUR versions go to +90°C)
- Bending Radius (Moving): 7.5 x Outer Diameter
- Bending Radius (Fixed): 4 x Outer Diameter
- Travel Distance: Up to 10 meters (in dynamic applications)
- Bending Cycles: 5 million + (This is a huge number. It means years of use)
- Standards: VDE 0245, VDE 0285, IEC 60228 Class 6
- Shielding: Unshielded (Standard). Shielded versions are available if you need EMC protection.
Where should you use this cable?
You can use this cable almost anywhere something moves. But it is best for heavy-duty jobs because 16 sq mm is thick. It carries a lot of current.Here are the best places to use it:1. Heavy Conveyor BeltsIn a warehouse, big boxes move on belts. The motors that drive these belts need power. The sensors that count boxes need signals. This cable does both. It hangs under the belt and moves back and forth. It resists the dirt on the floor.2. Robotic ArmsRobots have elbows and wrists. These joints rotate. Cables inside the arm need to bend constantly. If the cable is too stiff, the robot moves slower to avoid breaking the wire. With FD810, the robot can move fast because the cable is light and flexible.3. CNC Machines and MillsComputer Numerical Control (CNC) machines cut metal. They have moving parts called gantries. The gantry moves left and right. The cable chain drags behind it. There is metal dust and oil everywhere. FD810 is perfect here because it is abrasion-resistant.4. Port Cranes and HoistsCranes that lift containers move up and down. The cable has to handle the vertical movement plus the wind swaying the load. The tensile strength of the FD810 keeps the cable from snapping under its own weight.5. Assembly LinesCar factories use thousands of these. A car chassis moves down a line. Welding robots, paint sprayers, and screwdrivers all need power. The cable chain moves with the car. It sees sparks and heat. The flame-retardant property (IEC 60332-1-2) means it won’t catch fire easily.
Why buy the “German Cable” quality?
You might find cheaper cables from other countries. But “cheap” often means “fake specs.” A cheap cable might say it is 16mm², but the copper is actually 14mm². Or the sheath is made of recycled plastic that cracks in a week.German engineering (specifically LAPP) has a reputation for honesty. The copper is pure. The measurements are exact.When you buy this cable, you are buying peace of mind. You know it will last for 5 million bends. You know it won’t fail in the cold. You know it won’t melt in the heat.For a factory manager, reliability is everything. It is better to pay a little more for a cable that lasts 3 years than to buy a cheap one that breaks every 3 months. The labor cost to replace a broken cable is usually higher than the cost of the cable itself.
Installation Tips for Long Life
Even the best cable will fail if you install it wrong. Here are a few simple tips to make sure your FD810 lasts a long time:
- Don’t pull too hard: Every cable has a “tensile strength.” For a 4x16mm² cable, this is high, but don’t yank it. Use a pulling eye or a socket.
- Use the right drag chain: Make sure the drag chain has smooth edges. No sharp screws sticking out. The cable should slide freely.
- Separate power and data: If you can, put power cables in one side of the chain and signal cables in the other. This stops electrical noise.
- Check the bend radius: Don’t fold the cable into a 90-degree angle right at the connector. Give it a curve. Use a “fan-out” at the end so the wires separate smoothly.
- Length: Make sure the cable is 10% longer than the travel distance. It needs some “slack” to move comfortably.
Frequently Asked Questions about this Part
Q: Is this cable shielded?A: The standard version (0026187 style) is usually unshielded. It is for power and general control. If you need shielding for sensitive data, look for the “CY” or “CP” versions which have a copper braid shield.Q: Can I use this outdoors?A: Yes. The sheath resists UV light and ozone. However, if it is in direct sunlight for years, it will eventually age. It is better to put it in a conduit or drag chain for outdoor use.Q: What is the difference between PVC and PUR sheath?A: PUR is stronger. It handles oil and heat better. PVC is cheaper and good for dry, indoor environments. For a 16mm² heavy-duty cable, PUR is usually the better choice for industrial use.Q: How do I strip the wire?A: Because the strands are very fine, use a sharp stripper. Don’t nick the copper. If you cut too deep, the wire will break when it bends.Q: What is the price?A: Prices change with the global copper market. Because this is a 16mm² cable, it has a lot of copper inside. It is heavier and more expensive than small signal cables. But it is cheaper than the downtime it prevents.
Ready to upgrade your machinery?
Don’t wait for the next breakdown. If you are using standard cables in your drag chains, you are gambling with your production schedule. The FD810 4-core 16 sq mm cable is the industry standard for a reason. It works.We have this cable in stock. We can cut it to the exact length you need. We can also add connectors or ferrules if you ask.Our team knows cables. If you are not sure if 16mm² is the right size for your current, tell us your amperage and voltage. We can help you calculate the right size. Maybe you need 10mm²? Or maybe you need 25mm²? We can help.Send us an inquiry today. Tell us the part number 0026187 or just say “German FD810 4x16mm.” We will send you a quote within 24 hours. Let’s keep your machines running smoothly.Inquire Now for Best Price & Technical Support