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igus® Ltd.

Caswell Road

Northampton, NN4 7PW

01604 677240

Fibre optic cables - flexible & resistant

What are fibre optic cables?

Fibre optic cables (FOC), also known as glass fibre cables, consist of optical fibres that serve to transmit light. This light is transmitted into fibres of quartz glass or plastic and the fibres of the fibre optic cable consist of the basic glass material.

igus® fibre optic cables are specifically designed for use in energy chains. Their special jackets (PUR, PVC, TPE) and special designs allow problem-free use in moving applications. Due to the various strain relief options, the cables withstand high mechanical loads, vibration, oil, gasoline and solvents equally. 
  • Available with various fibres and outer jacket materials
  • For long distances and the transmission of large amounts of data
  • Four advantages over copper bus systems
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Fibre optic cable options

Fibre optic cable CFLK

chainflex® fibre optic cable CFLK
  • Requirements: POF fibres for heavy duty applications and interference-free transmission
  • Outer jacket: PUR
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Fibre optic cable CFLG88

chainflex® fibre optic cable CFLG88
  • Requirements: Gradient glass-fiber cable for flexing applications
  • Outer jacket: PVC
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Fibre optic cable CFLG.LB.PUR

chainflex® fibre optic cable CFLG.LB.PUR
  • Requirements: Gradient glass-fibre cable for heaviest duty applications
  • Outer jacket: PUR
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Fibre optic cable CFLG.G

chainflex® fibre optic cable CFLG.G
  • Requirements: Glass-fibre cable for heaviest duty applications
  • Outer jacket: TPE
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Fibre optic cable CFLG.LB

chainflex® fibre optic cable CFLG.LB
  • Requirements: Gradient glass-fibre cable for heaviest duty applications
  • Outer jacket: TPE
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Fibre optic cable CFROBOT5

chainflex® fibre optic cable CFROBOT5
  • Requirements: For twistable applications
  • Outer jacket: TPE
  • Halogen-free
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Do you need connectors with your cable?

chainflex with and without connectors
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Fibre science

Fibre science for our fibres

Our fibre optics section covers many different types of conductors. All cables are based on two types of fibre. One is the gradient glass fibre. The other is the glass fibre in a gel-filled cavity. The glass fibres are divided into OM (optical multimode) classes. These classes differ in transmission rate, referred to as Gigabit Ethernet. Our cables are of class OM2 or OM3, depending on type. They are also available in various fibre diameters, comparable to the cross-sections of copper cables. Our fibre optics have 50/125µ and 62.5/125µ for multimode fibres and 9/125µ for single-mode fibres. Multimode means that the fibre can transmit multiple light spectra. The single-mode fibre transmits only one light beam.

Why the fibre optic cable is the bus line for long distances etc.

Can glass move? Yes, it can – it can move very well. If it is designed correctly. Four reasons for a fibre optic cable in the e-chain. First, there is data volume. Compared to the common field buses used in automation technology, this is almost unlimited for a fibre optic cable. As a rule, two fibres are used, one for the outward and one for the return journey. Interference from other electrical sources can also be ruled out since no signal couples into the optical fibre. Glass is also suitable for long travels. Bus systems based on copper quickly reach their limits beyond 50m. A fibre optic cable can be used beyond 1000m. What is particularly surprising is the extremely small radius that our cables can achieve. With conventional bus systems that use copper, such as Profinet, all of these points can lead to transmission problems and subsequently to cable failure.

Are you familiar with our online tools?

Simply find and choose a suitable type, calculate its service life and order it online
Product finder

chainflex® product finder

Find the right cable for your application quickly and easily
To the product finder
Service life calculator

Service life calculator tool

Calculate the service life of any chainflex® cable
To the service life calculator
Copper surcharge calculator

chainflex® wiki

Find everything you need for chainflex® cables
Find out more
chainflex configurators

Special cables configurator

Configure your individual cable in just three minutes
To the configurator

Fibre optic cable applications examples

Are you looking for an chain for your cable?

Find your e-chain®

.....or do you require a fully harnessed version?

To the readychain


I would be happy to answer your questions

Shipping and consultation

In person:

Monday to Friday from 8am - 8pm.



The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "igutex", "kineKIT", "manus", "motion plastics", "pikchain", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsubishi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention on this website. The products offered by igus® are those of igus® GmbH