Is Your Cable Failing Too Soon in the Drag Chain?
You know the frustration. Your machines run perfectly, but the cables inside the drag chain keep breaking. The outer jacket cracks from friction. The shield breaks, causing signal errors in your servo motors. Or the copper conductors snap after just a few months of movement. This downtime costs you money and reputation. You need a cable that moves as hard as your machines do. You need a cable that resists oil, bends millions of times, and protects the signal inside. This is not just a wire. It is a high-performance power and feedback cable designed for the toughest industrial environments.
What Makes This 30.25+20.1mm PUR Cable Special?
This cable is built for servo motors and drag chains. The structure is specific: 3 power cores at 0.25 square mm and 2 signal or grounding cores at 0.1 square mm. This size is perfect for medium-duty servo drives. The outer material is Polyurethane (PUR). Why PUR? Because it is tough. It does not tear like PVC. It resists oil, coolant, and chemicals. If your factory has moving parts, this cable handles the stress. The shielding stops electromagnetic interference (EMI). This means your control signals stay clean. Your machine runs smoother and more accurately.
Built for Extreme Movement and Bending
Standard cables crack when they bend. This cable is different. It uses a special stranding technique. The copper wires inside are very fine. They twist together in a specific pattern. This allows the cable to bend sharply without breaking the metal. We test these cables for 10 million bending cycles or more. The minimum bending radius is usually 75 times the outer diameter when moving. For fixed installations, it is much lower. This makes it ideal for high-speed movement in robotic arms and CNC axes. You can pull it, twist it, and bend it. It will keep working.
Technical Specifications You Can Trust
Here are the hard numbers for this shielded drag chain cable:
- Conductor Material: Class 6 Extra Flexible Bare Copper (Tinned optional).
- Insulation: Special PUR or PP blend for high flexibility.
- Shielding: Aluminum foil + Tinned Copper Wire Braid (TCWB). Coverage is about 85%.
- Outer Sheath: PUR (Polyurethane).
- Color: Black or Orange (Customizable).
- Rated Voltage: 600/1000V (0.6/1kV).
- Test Voltage: 4000V AC.
- Temperature Range:
- Fixed: -40°C to +80°C.
- Moving/Drag Chain: -25°C to +80°C.
- Oil Resistance: Excellent. Resists hydraulic oils and coolants.
- Flame Retardancy: IEC 60332-1-2.
- Capacitance: Low capacitance to ensure signal integrity for encoders.
- Impedance: Controlled impedance for high-frequency data transmission.
Where Should You Use This Cable?
This cable fits many industrial applications. It is perfect for power drag chains in assembly lines. Use it for servo motor feedback systems. It works great in machine tools like lathes and mills. You can also find it in robotic welding cells, painting robots, and material handling systems. It is suitable for damp areas and places with oil mist. If you have a gantry crane or a port machine, this cable handles the vibration. It is also used in food and beverage lines because PUR is hygienic and resistant to cleaning chemicals.
Why PUR is Better Than PVC for Your Machines
You might ask, “Why not use PVC?” PVC is cheap, but it gets stiff in the cold and soft in the heat. It cracks easily when dragged. PUR cable solves these problems. PUR has excellent abrasion resistance. It acts as a barrier against mechanical stress. It is halogen-free in many formulations. If a fire happens, it produces less smoke. This is safer for your factory. PUR also has great UV resistance. You can use it outdoors without the sun ruining the jacket. It is the top choice for flexible drum winding and festoon systems.
Shielding and EMC Protection
Electromagnetic Compatibility (EMC) is critical for servo systems. Noise from other motors can mess up your data. This cable has a double-shield design. First, there is a foil shield around the core. Then, there is a copper braid over the whole cable. This stops noise from getting out. It also stops noise from getting in. This is vital for encoder cables and resolver feedback. The ground wire (usually yellow-green) ensures safety. It drains any stray voltage away. You get stable performance even next to heavy power lines.
How to Order and Customize
We know every project is different. Maybe you need a different color for easy identification. Maybe you need a special connector on the end. We can help. We offer OEM and ODM services. You can choose the jacket color—black, orange, or green. We can add steel wire armor if you need extra crush resistance. The length is customizable. We can print your logo or meter markings on the jacket. Our production follows strict standards like DIN 47100. We use high-purity copper to keep resistance low.
Get Your Quote Today
Don’t let cable failure stop your production line. Invest in a cable that lasts. This 30.25+20.1mm shielded servo cable with PUR jacket is the solution you need for drag chains and moving applications. It offers the best mix of flexibility, strength, and signal protection. We are a factory direct supplier. We control the cost of raw materials like copper. This means we give you the best price without sacrificing quality.Contact us now for a free quotation. Tell us your voltage needs, bending radius, and quantity. We will send you a technical datasheet and a competitive price list within 24 hours. Upgrade your wiring today. Make your machines run forever.