Is your expensive servo motor cable failing again?
You know the feeling. Your production line is running fast. The robots are moving. Suddenly, the machine stops. You check the control panel, and there is an error. You look at the cable chain, and you see the problem. The outer jacket is cracked. The copper wires inside are broken. Or maybe the signal is getting messy because of interference.This is a huge pain. Cable failure causes downtime. Downtime costs money. You have to replace the cable. You have to fix the machine. You lose production time. It is frustrating.Standard cables are not made for constant movement. They are made to sit still in a wall. When you put them in a moving cable chain, they crack. They break. They fail.You need a cable that is built for motion. You need a cable that bends millions of times without breaking. You need the Igus CF31.500.04. This is not just a wire. It is a complete system for your servo motor power supply. It is designed specifically for continuous flexing applications in cable chains (also known as energy chains or e-chains).Let’s look at why this specific cable is the best choice for your industrial automation setup.
What makes the CF31.500.04 special?
This cable is part of the famous Igus Chainflex family. Igus has been testing cables for decades. They have a huge lab in Germany. They test cables every day. They know what makes a cable last a long time.The CF31 series is a top seller for a reason. It handles high power. It resists interference. It lasts a long time. The specific model CF31.500.04 has a cross-section of 50mm². It has 4 cores. It is built for heavy-duty servo motors.Most cables fail at the connector or in the bend radius. This cable fixes those problems. It uses a special inner jacket. It uses a special braid. It uses the right materials. Let’s break down the technical details in simple terms.
Technical Specifications at a Glance
Here is the hard data you need for your engineering file. This cable meets strict international standards.
- Product Series: Chainflex CF31
- Part Number: CF31.500.04
- Cable Type: Servo Motor Power Cable (Shielded)
- Number of Cores: 4 Cores (3 Power + 1 Ground/PE)
- Conductor Cross-Section: 50 mm² (approx. 1/0 AWG size class)
- Conductor Material: Bare copper strands (Class 5 flexible)
- Voltage Rating: 1000V (UL) / 600V (VDE)
- Shielding: Copper braid, 90% coverage
- Outer Jacket Material: PVC (Jet Black) or PUR options available
- Temperature Range:
- Fixed: -5°C to +70°C (+23°F to +158°F)
- Flexing: +5°C to +70°C (+41°F to +158°F)
- Minimum Bend Radius: 7.5 x cable diameter (dynamic in e-chain)
- Oil Resistance: Yes (DIN EN50363-1, Class 2)
- UV Resistance: Yes
- Flame Retardant: IEC 60332-1-2, VW-1, FT-1
- Approvals: UL Style 10492 & 2570, CE, CSA, RoHS II
Built for the Toughest Environments
Your factory floor is not a clean office. It is dirty. It is hot. It is full of oil and chemicals.The Igus CF31.500.04 is ready for this. The outer jacket is made of high-quality PVC. It is jet black. It resists oil. If your machine leaks a little oil, this cable will not dissolve. It resists UV light. If you have outdoor machines, the sun will not crack it.It is also flame retardant. This is very important for safety. If there is a short circuit, the cable will not spread the fire. It meets the IEC 60332-1-2 standard. This is a must-have for modern industrial panels.The cable is also silicone-free. Why does this matter? Some cheap cables use silicone. Silicone can migrate. It can get on your metal parts. It can ruin your sensors. This cable is safe. It will not contaminate your machine.
The Secret to 10 Million Cycles
How does this cable last so long? The secret is inside.Standard cables use a “filler” or “fleece” wrap around the wires. This is cheap. But it creates gaps. The wires move inside these gaps. They rub against each other. They break.Igus uses a pressure-extruded inner jacket. Imagine a solid plastic tube inside the cable. The wires are pressed into this tube. There are no gaps. The wires cannot move around. They stay in place. This stops the wires from rubbing and breaking.The shielding is also special. It is a copper braid. But the angle of the braid is optimized. It is not just wrapped randomly. Igus engineers calculated the perfect angle. This allows the shield to stretch and bend without snapping. It gives 90% coverage. This stops Electromagnetic Interference (EMI).Your servo drive creates “noise” (voltage spikes). If the cable is not shielded, this noise can hurt other electronics. The 90% braid keeps the noise inside the cable. It protects your control system.
Easy Installation Saves You Time
Time is money. You do not want to spend hours stripping a cable.The CF31 series has a tear strip. This is a genius feature.
- For unshielded cables, the tear strip is in the outer jacket.
- For shielded cables (like this one), the tear strip is in the inner jacket.
You just pull the strip. The jacket opens up cleanly. You do not need a special knife. You do not risk cutting the copper wires. You strip the cable 50% faster than standard cables.This makes assembly much faster. Your technicians will be happier. You will build machines faster.
Perfect for These Applications
Where should you use this cable? You should use it anywhere a motor moves.
- Cable Chains (E-Chains): This is the main use. If the cable is moving back and forth, put it in an e-chain with this cable.
- CNC Machines: The axis motors on a CNC machine move constantly.
- Robotics: 6-axis robots, SCARA robots, and delta robots. The cables at the wrist joint take a lot of stress.
- Automated Storage Systems: Cranes and shuttles that move in warehouses.
- Packaging Machines: Fillers, cappers, and labelers that run 24/7.
- 3D Torsional Motion: If your cable twists (rotates) while moving, this cable handles it well.
It works perfectly with major servo drive brands. It supports protocols like PROFINET, EtherCAT, and PROFIBUS (though this specific model is for power, not data).
Testing You Can Trust
Igus does not just guess. They test.They have a test lab that runs 24/7. They test cables on real machines. They bend them. They twist them. They pull them.The CF31 series is guaranteed for 5 million to 10 million cycles. A “cycle” is one bend forward and one bend back. 10 million cycles is a huge number. Most standard cables fail at 500,000 cycles. This cable lasts 20 times longer.They also offer a service life calculator on their website. You can enter your specific details (length, speed, acceleration). The calculator tells you exactly how long the cable will last. This is real data. It helps you plan maintenance before a failure happens.
Why Buy From Us?
We are a trading company specializing in high-quality cable solutions. We know the export market.
- Genuine German Quality: You get the real Igus product, not a cheap copy.
- Fast Shipping: We ship within 24 hours for stock items. We use DHL, FedEx, or air freight.
- Packaging: We use the Igus CASE system. This reduces waste. It saves shipping costs (up to 84%). It is easy to handle.
- Samples: Not sure? Ask for a free sample box. Test it on your machine before you buy a bulk order.
- Price: We have great relationships with the factory. We give you competitive prices.
Get Your Quote Today
Do not let cable failure stop your production line again. Upgrade to a cable that is built for motion. The Igus CF31.500.04 is the industry standard for a reason. It is reliable. It is easy to install. It lasts for years.We have stock ready to ship. Whether you need 10 meters or 1000 meters, we can help.Contact us now for a formal quotation. Send us your inquiry with the part number CF31.500.04. Tell us the length you need. Ask us about the PUR version if you need extra oil resistance.Click the “Request Quote” button. Or email us. Let’s get your machines running smoothly with the best servo cable on the market.Order today and experience the difference of real continuous flex cable.