Is your machinery downtime costing you thousands of dollars every month?
You know the feeling. You have a high-speed CNC machine or an automated robot arm running a production line. Everything works fine for a few weeks. Then, suddenly, the system stops. You check the control panel, and you see an error. You trace the wires, and you find the same old problem: the cable inside the drag chain has broken again. The insulation is cracked. The copper conductors are snapped. There are oil stains everywhere.Standard cables are not built for constant motion. They crack under pressure. They get sticky when oil touches them. They fail in cold warehouses. This is not just an annoyance. It is a profit killer. Every hour your machine is down, you lose money. You need a cable that moves as much as your machine does. You need a cable that ignores oil, resists bending fatigue, and lasts for years, not weeks. This is where the Igus CF890.25.05 comes in. It is not just a wire. It is a motion solution designed for the harshest industrial environments.
What exactly is the Igus CF890.25.05?
This is a specific model from the igus Chainflex family. The full part number is CF890.25.05. It is a control cable built for energy chains (drag chains). It has 5 cores (conductors). Each core has a cross-section of 2.5 square millimeters. This size is perfect for control signals, low-voltage power, and data transmission in industrial automation.The “CF” in the name stands for Chainflex. The “890” is the series number for highly flexible PUR cables. The “25” refers to the conductor size (2.5 mm²), and the “05” means it has 5 cores. This cable is unshielded, which makes it lighter and more flexible. It is ideal for applications where you do not need heavy EMI shielding, or where you use separate shielding methods.Igus is a German engineering company famous for motion plastics. They test these cables in their own labs under extreme conditions. This specific cable is designed to handle millions of bending cycles. It is a “continuous flex” cable. That means you can install it in a moving drag chain, and it will flex back and forth all day without failing.
Technical Specifications at a Glance
Here are the hard numbers you need for your engineering team. We keep it simple so you know exactly what you are buying.
- Product Series: Chainflex CF890
- Part Number: CF890.25.05 (also known as CF890-25-05)
- Conductor Type: Stranded bare copper (Class 5 according to DIN EN 60228)
- Number of Cores: 5
- Cross-Section: 2.5 mm² (approx. 14 AWG)
- Insulation Material: TPE (Thermoplastic Elastomer)
- Jacket Material: PUR (Polyurethane, iguPUR compound)
- Shielding: Unshielded
- Voltage Rating: 600 Volts (UL/CSA)
- Temperature Range: Flexing: -10°C to +70°C / Fixed: -40°C to +80°C
- Outer Diameter: 10.0 mm (approx. 0.39 inch)
- Weight: Approx. 175 kg/km (117.6 lbs/1000ft)
- Bend Radius: 75 mm to 225 mm (depending on installation)
- Oil Resistance: Class 3 (high resistance)
- Flame Retardancy: UL VW-1, IEC 60332-1-2
- Approvals: UL, CSA, CE, EAC, RoHS, REACH
Why does this cable last longer than standard wires?
The secret is in the construction. Most cheap cables use standard PVC. PVC gets hard in the cold and sticky in heat. It cracks easily when bent. The CF890.25.05 uses advanced polymers engineered by igus.The Conductor ConstructionThe copper wires inside are not just solid chunks. They are made of many thin strands twisted together. This is called “stranded” construction. But igus takes it further. They use an “optimized pitch length.” This means the strands are twisted at a specific mathematical interval. This prevents the wires from rubbing against each other and breaking internally. It ensures the electrical connection stays solid even when the cable is twisting and turning.The Insulation and JacketThe inner insulation is TPE. TPE is mechanically strong. It resists abrasion. The outer jacket is a special iguPUR compound. PUR is much tougher than PVC. It has “low adhesion.” This is a fancy way of saying it is slippery. When cables rub against each other in a crowded drag chain, friction creates heat and wear. The low-adhesion jacket reduces this friction. It also resists oil and coolants. If oil spills on it, the cable does not swell up or degrade.Silicone-Free GuaranteeThis is a big deal for painters and assemblers. Many cables contain silicone. Silicone causes “fisheyes” in paint jobs. It ruins the finish of your machinery. The CF890.25.05 is 100% silicone-free. You can use it in painting robots or assembly lines without worrying about paint defects. It is also PTFE-free.
Real-World Applications: Where to use it?
You should use this cable in any application where the wire moves. If the cable is hanging in a fixed box, do not buy this. It is overkill. But if the cable is moving, this is the right choice.Machining Units and CNC MachinesThis is the most common use. Inside a CNC machine, the control cables move constantly as the spindle and table shift. There is also cutting oil and coolant everywhere. The CF890.25.05 loves this environment. It resists the oil and handles the constant flexing.Unsupported TravelsSometimes you have a long run of cable with no support for several feet. This is called “unsupported travel.” Standard cables sag and break under their own weight in these setups. The CF890.25.05 has a robust jacket that resists sagging. It can glide over long distances without support.Robotics and Automated Guided Vehicles (AGVs)Robots have joints that bend and twist. An AGV moves around a factory floor all day. The cables inside these machines undergo high stress. The 2 billion test cycles guarantee from igus means this cable can handle the high-speed motion of modern robotics.Outdoor and Indoor UseThe jacket has medium UV resistance. You can use it outside, but it should not be in direct, constant sunlight. It is perfect for outdoor sensor stations or garage door openers, as long as it is somewhat shaded.
The “Chainflex Guarantee” – Why buy from Igus?
Igus is so confident in this cable that they offer a guarantee. It is not a small warranty. It is a 36-month service life guarantee. They have tested this specific cable in their lab for over 2 billion bending cycles per year.How does this help you? It reduces your risk. If you design this cable into your machine, you know it will last for at least 36 months under normal conditions. If it fails earlier, igus will replace it. This is rare in the cable industry. Most suppliers just say “sold as is.” Igus stands behind their engineering.They also have a “service life calculator” on their website. You can input your specific travel distance, speed, and acceleration. The tool will tell you exactly how long the cable will last in your specific machine. This takes the guesswork out of maintenance.
Compliance and Safety Standards
You need cables that meet safety codes. The CF890.25.05 checks all the boxes for the US, Canada, and Europe.
- UL/CSA AWM: Rated for 600V and +80°C. This is crucial for control panels in North America.
- CE: Meets the EU Low Voltage Directive (2014/35/EU).
- RoHS & REACH: It is lead-free and free of hazardous substances. This is required for export to Europe and for environmentally conscious manufacturing.
- EAC: Certified for the Eurasian Economic Union (Russia, Belarus, etc.).
- Flame Retardant: It passes the VW-1 and FT1 flame tests. If there is a fire in the control cabinet, this cable will not spread the flames easily.
Installation Tips for Maximum Life
To get the 36-month guarantee, you need to install it right. Here are a few quick tips:
- Respect the Bend Radius: Do not bend the cable sharper than 75mm (for dynamic movement). If you bend it too tight, you will damage the conductors.
- Fix the Ends: Use strain reliefs at both ends of the cable. This stops the weight of the cable from pulling on the connections.
- Separate Heavy and Light Cables: If you have high-voltage power cables in the same drag chain, keep them away from this control cable. Use a separator if possible.
- Check Alignment: Make sure the drag chain is aligned. If the chain twists, the cable will twist, and it is not designed for torsion (twisting). It is designed for bending.
Ready to upgrade your machinery reliability?
You have seen the specs. You know it resists oil. You know it handles 2 billion cycles. You know it has a 3-year guarantee. There is no reason to keep using standard cables that fail every few months.We are a professional cable supplier. We can supply the Igus CF890.25.05 in any length you need. We can also help you with pre-assembled cables (readycable) if you want to save time on stripping and crimping. We ship globally. Whether you are in the USA, Germany, or Asia, we can get this cable to your factory floor fast.Stop the downtime. Fix the reliability issue once and for all.Contact us now for a free quote. Send us your requirements. Let us know the length and quantity. We will get back to you with the best price and delivery time immediately.