Is your factory floor dealing with constant cable failures? Do your machine tools keep tripping because of broken wires or signal interference? It is a big problem when a cheap cable stops your expensive machine from working. You lose time and money every time a wire snaps inside a drag chain or gets chewed by moving parts. This is why you need a cable that moves as much as your machines do without breaking.We know how frustrating it is to replace cables every few months. You need a wire that is flexible, strong, and protects the signals inside. Our KDC 22-core cable is built exactly for this. It is not just a power cable. It is a lifeline for your automation systems. It connects your motors, sensors, and control panels without the mess of single wires. Let us look at why this specific cable is the best choice for your heavy-duty machines.
What Makes This 22-Core Cable Special?
This cable is designed for high-flex areas. It has 22 separate cores inside one outer jacket. Each core is 0.75 sq mm (which is the same as 18 AWG). This size is perfect for carrying power and control signals to small motors and sensors.The magic is in the materials. We use a copper-plated, tin-coated sheath. This sounds technical, but it is simple. The tin coating stops the copper from rusting. It also makes the cable slide better in tight spaces. The sheath is the armor that protects the inner wires from oil, water, and dirt. If you work in a wet or oily workshop, this jacket keeps the inside dry and safe.Another key feature is the flexibility. Standard wires are stiff. They crack if you bend them too much. This KDC cable uses a special flexible insulation, usually PVC or XLPE. It can twist, turn, and stretch without damaging the copper inside. It is perfect for “dynamic applications.” That is a fancy way of saying it works great in moving parts like robotic arms or sliding doors.
Detailed Technical Specifications
You need to know exactly what you are buying. Here are the hard numbers for the KDC 22-core cable. These specs help you compare it to what you use now.
Conductor and Material Details
The core of the wire is made of high-quality copper. We use stranded copper, not a solid single wire. Stranded wire is much stronger when it vibrates.
- Conductor Material: Annealed bare copper (tin-coated option available).
- Conductor Size: 0.75 mm² / 18 AWG.
- Stranding: Class 5 flexible stranding (this means very thin wires twisted together for max flexibility).
- Number of Cores: 22 cores.
- Core Colors: Usually numbered or colored for easy identification (Black, White, Red, etc., or numbers printed on insulation).
- Sheath Material: PVC (Polyvinyl Chloride) or XLPE (Cross-linked Polyethylene). XLPE is better for high heat.
- Outer Jacket: Black, oil-resistant, and flame-retardant.
Electrical and Physical Data
How much power can it handle? How heavy is it? Here is the data:
- Voltage Rating: 300/300V (for control) or 0.6/1kV (for power). Check your machine voltage.
- Maximum Operating Temperature: 70°C for PVC, 90°C for XLPE.
- Minimum Bending Radius: 6 times the cable diameter. This means it can bend very tight without breaking.
- Weight: Approx 0.5 to 0.6 kg per meter (depending on shielding).
- Outer Diameter: Around 14mm to 16mm (varies by insulation thickness).
- Conductor Resistance: About 26.0 Ohms/km at 20°C. This is low resistance, so you don’t lose power over long runs.
- Current Rating: In free air, each core can handle about 10-12 Amps. In a duct or bundle, it is lower (around 6-8 Amps).
Why Use 0.75 sq mm (18 AWG) Size?
You might ask, why not use thicker wire? Or thinner wire? The 0.75 sq mm size is the “Goldilocks” size for machine tools.
Power vs. Signal
Thicker wire (like 1.5 sq mm) is heavy and takes up too much space in a cable tray. If you have 22 cores of thick wire, the cable becomes a stiff rope. You cannot bend it. Thinner wire (like 0.5 sq mm) might overheat if the motor draws too much current.0.75 sq mm hits the sweet spot. It carries enough current for most solenoids, sensors, and small servo motors. At the same time, it is thin enough to keep the whole cable flexible. It also saves space in your control cabinets. You can fit more wires through the same hole.
Space Saving in Drag Chains
If you use single wires, you need 22 separate holes in your cable carrier (drag chain). That is a lot of holes! It makes the chain wide and heavy. With our 22-core cable, you only need one hole. The chain is smaller, lighter, and moves faster. This saves space and reduces the weight on your machine’s moving axis.
Perfect Applications for Machine Tools and Motors
Where should you use this specific cable? It is not for house wiring. It is for industrial tough jobs.
CNC Machines and Machining Centers
CNC machines vibrate a lot. They also have moving axes (X, Y, Z). The cables inside the axis move back and forth millions of times. A standard cable will break in weeks. Our KDC cable is rated for high cycle counts (millions of bends). It is ideal for connecting the spindle motor, tool changer, and limit switches.
Robotics and Robotic Arms
Robotic arms have complex joints. The cables inside the wrist joint need to bend constantly. This 22-core cable provides power and feedback signals to the servo motors in the arm. The tin-coated sheath prevents the metal from fatiguing and snapping.
Conveyor Systems and Packaging Lines
In a factory, conveyor belts move boxes. Sensors along the belt need power and signal wires. If you run single wires along the belt, they get snagged on the frame. A multi-core cable is cleaner. It hangs under the belt or runs in a track. It resists abrasion from the moving belt.
Elevators and Lifts
Elevator cars move up and down. The cable connecting the car to the control room needs to flex. It also needs to be fire-resistant. Our PVC or XLPE sheath is self-extinguishing. If there is a short circuit, the fire does not spread easily.
The “Tin-Coated” Advantage: Why It Matters
We mentioned the “copper-plated tin-coated sheath.” Why is this important for you?
Anti-Corrosion
Factories are not clean rooms. There is humidity, coolant oil, and metal dust. Copper reacts with oxygen and sulfur in the air to turn green (verdigris). This is corrosion. It increases resistance and causes heat. Tin does not rust. By coating the copper, we ensure the connection stays clean for years.
Soldering and Termination
Tin makes it easy to solder the wires. If your electricians need to attach connectors, the tinned wire takes solder quickly. It creates a strong, shiny joint. Untinned copper is harder to solder and oxidizes fast during the process.
Chemical Resistance
Machine shops use cutting fluids and oils. Some cheap PVC jackets absorb oil and get soft. Our special compound resists oil. The sheath does not get sticky or swell. It keeps the cores tight and protected.
Flexibility and Bending: The Drag Chain Test
The biggest pain point is the “drag chain” (or cable carrier). If the cable is too stiff, the chain gets stuck. If it is too loose, it tangles.Our cable is designed with a “lay-up” that creates a helical shape inside the jacket. This means when you bend the cable, the inner cores slide against each other slightly instead of stretching and breaking.We test our cables for “cold bend” performance. You can install it in a cold warehouse (down to -15°C) without cracking it. Cheap cables become like glass in the cold and snap the first time you turn the machine on. Our flexible PVC stays rubbery even in cold weather.
Installation Tips for Electricians
To get the best life out of this cable, follow these simple rules:
- Don’t pull too hard: Use a pulling eye, not the jacket. The maximum pulling force is about 50 Newtons per mm² (roughly 375 Newtons total for this size).
- Respect the bend radius: Don’t bend it sharper than 80mm radius. If you kink it, you damage the insulation.
- Separate high and low voltage: If you have 220V power and 24V signals in the same cable, make sure the insulation is rated for the highest voltage (600V). Our cable is rated for this.
- Strain relief: When the cable enters a box or motor, clamp it down so it doesn’t wiggle at the connection point.
Why Buy From Us?
You have many choices for cables. Why choose our KDC brand?
- Consistent Quality: We test every batch. We check the diameter, the insulation thickness, and the copper purity. You won’t get a “thin” cable that fails inspection.
- Customization: Need a different color for core #1? Need a yellow jacket for safety? We can make it. We can also add steel wire armor (SWA) if you need extra crush protection, though for most machine tools, the flexible sheath is enough.
- Fast Delivery: We keep stock of standard sizes. We can ship within 7 days for 0.75 sq mm and 18 AWG.
- Certifications: Our cables meet IEC 60502-1 and ISO 9001 standards. They are safe for export to the USA, UK, and Europe (CE/UL compliant options available).
- Price: We are a factory direct supplier. You cut out the middleman. We offer bulk discounts for containers.
Common Questions (FAQ)
Is this cable shielded?
The standard version is unshielded. If you have heavy interference from VFDs (Variable Frequency Drives), we recommend adding a braided copper shield or aluminum foil shield. This stops “electrical noise” from messing up your sensor readings.
Can I use this outdoors?
Yes, if you use the Black PE or XLPE outer sheath. The standard PVC is for indoor or dry outdoor use. For direct burial or UV exposure, ask for the “Sunlight Resistant” compound.
What is the difference between 0.75 sq mm and 18 AWG?
They are almost the same size. 0.75 sq mm is the metric measurement. 18 AWG is the American Wire Gauge. 18 AWG is actually 0.823 sq mm, but in the cable industry, they are often used interchangeably for this class of wire. Our 0.75 sq mm meets the resistance requirements of 18 AWG.
How do I strip the jacket?
Use a sharp automatic stripper. Do not use a knife—you might nick the copper strands. If you nick a strand, it will break later due to vibration.
Final Thoughts: Stop the Downtime
Don’t let a bad cable stop your production line. A cheap cable might save you 0.10permetertoday,butitwillcostyou1,000 in repairs and lost production tomorrow.Invest in the KDC 22-core flexible cable. It is built for the real world. It handles the bending, the oil, the heat, and the vibration. It keeps your machines running smooth.Ready to upgrade your wiring?Get a Quote Today!Send us your requirements. Tell us the length, the jacket color, and if you need shielding. We will send you a competitive price within 24 hours. Click the “Inquiry” button or email us directly. Let’s build a reliable power system for your factory together.