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e-loop® modular energy chain system


In order to safely and reliably guide cables and hoses in hanging applications, igus developed the e-loop as an alternative to the service loop - ideal for 3-dimensional applications.

The e-loop combines the advantages of a plastic energy chain with those of a high-strength pull rope. Inside the chain, the rope transfers the pull forces to the mounting brackets and the structure. As a result, the cables are kept completely relieved of strain.

The modular e-chain made of high-performance polymer always enables a defined bend radius and easily copes with vibrations and impacts.

To the e-loop iSet

Tech up

Tech up

  • Modular system, easy to open
  • No loose parts with optional screw lock
  • Maximum cable/hose outer diameter up to 76mm or 500mm bend radius
  • Protects against impact due to robust PU outer body
  • Offers operational reliability due to secondary locking tension of all bolted connections
  • Resistant to dirt
  • An optional "drop safe" version is also available, with additional screw locking - as well as a stainless steel version
  • Weather-resistant

Cost down

Cost down

Proof

Proof

Sustainability

Sustainability

  • Have your energy chain recycled at the end
    of its life cycle with the igus chainge recycling program. No matter what manufacturer.
  • igus has been an investor in Mura Technology from the beginning and is helping advance chemical recycling. From plastic waste to crude oil in 20 minutes.


White papers


e-loop cable guidance in vertical drilling rigs

e-loop cable guidance in vertical drilling rigs

A newly developed alternative to the service loops on vertical drilling rigs offers significantly longer service life under extremely unfavourable environmental conditions.

Download now

Application solutions with the e-loop

Application solutions with the e-loop

Originally developed for
a very special application in deep-drilling rigs, the e-loop was used a short time after it was launched in such applications as bucket wheel excavators, ship unloaders, and offshore wind turbines. This white paper outlines various use cases to provide inspiration.

Download now

Structure of the e-loop

The interior of the e-loop

The interior consists of four injection-moulded parts. Two of them form the crossbar in the chain link and are screwed on (captively). Due to being screwed on, they are clamped onto the pull rope,

Outer protector of the e-loop

External protectors made of impact-absorbing PU protector material ensure that the energy chain and the cables are protected when hard impacts occur.

e-loop pull rope

The individual chain links are clamped onto the high-strength pull rope. The rope itself is a plastic-fibre rope and its permissible tensile load is 50kN.

e-loop mounting brackets

The mounting brackets of the e-loop are high-strength steel mounting brackets. The plastic-fibre rope, which absorbs the entire tensile force of the e-loop, is an integral part of the brackets.

Assembly of two chain links of the e-loop
e-loop in the factory

e-loop product range as an alternative to the service loop

The e-loop for top drive applications

NEW: e-loop for top drive applications

The new e-loop ELP.TD.300 is a four-part design for hanging top-drive applications. Cables in hanging top-drive applications are protected and safely routed. Cables can be easily filled through side opening. Other advantages include: easy maintenance, long service life, vibration-sensitive and weather-resistant.

Dynamic, crossbars every link:

Part No.InnerØOuterØBend radiusCable ≤ ø 
ELP.TD.300.*230mm300mm500mm75mm Requests
* Available from spring 2022

220mm - dynamic, crossbars every link

Part No.InnerØOuterØBend radiusWeight 
ELP.220.01.D150mm220mm380mm≈ 18kg/m Requests

  220mm - static, with crossbars every 2nd link
Part No.InnerØOuterØBend radiusWeight 
ELP.220.01.S150mm220mm175mm≈11kg/m Requests

300mm - dynamic, crossbars every link
Part No.InnerØOuterØBend radiusWeight 
ELP.300.01.D230mm300mm500mm≈22kg/m Requests

  300mm - static, with crossbars every 2nd link
Part No.InnerØOuterØBend radiusWeight 
ELP.300.01.S230mm300mm210mm≈13kg/m Requests

430mm - dynamic, crossbars every link
Part No.InnerØOuterØBend radiusWeight 
ELP.430.01.D360mm430mm625mm≈32.4kg/m Requests

 

e-loop with rollers

e-loop with rollers

Rollers under the e-loop for easier movement on the ground. One application example can be the generation of power for ships in ports.

e-loop with grip module

e-loop with grip module

Makes transport/travel of the e-loop system easier, e.g. on ECI plants, and simplifies the handling in combination with rollers.


Load and break test of the e-loop

igus performs application-specific tests in the in-house laboratory for a long-lasting energy supply.

Load test of e-loop
Continuous test of a completely harnessed e-loop with cable filling for 500t top drive. The test is carried out in the open air with all environmental influences as well as simulation of wind and vibrations.

Result: In the meantime, the test has run 40,000 double strokes. All influences due to weather do not affect the functionality of the e-loop. Side impacts, bumps or vibrations do not bother the e-loop.
Break test of the e-loop
Test setup: the e-loop is dropped from a height of 10 metres onto a vault and hits it with full force.

Result: the test proves that the e-loop withstands the collision without problems; its design is resistant to shocks and is shatter-proof.

The most fascinating projects with e-loop

The e-loop can be used in the following branches of industry:


e-loop questions and answers

How can I guide energy reliably and safely in heavy duty applications? What alternative is there to service loops and umbilicals?
igus has developed the e-loop as an alternative to the service loop so that cables with large cross sections and heavy weights can be guided safely in hanging applications. The energy supply system is a round, three-dimensional modular system that can move strain-relieved cables with a defined bend radius. The cables can be used individually and replaced in case of maintenance. The chain links are also replaceable at any time.

How does the e-loop absorb forces that act on it?
The new energy supply system from igus is built around a high-strength plastic rope that absorbs the tensile forces of the cables. The rope is composed of a synthetic plastic fibre and is therefore shatter-proof, weather-resistant, flexible and corrosion-free.

How can I exchange the cables in the e-loop?
Unhook, lay down, unscrew, exchange cable(s), screw shut, remount. That's all it takes regarding maintenance thanks to the simple modular setup of the energy chain. For the rarest of cases you should always have a replacement chain at hand to avoid downtime.

How does igus deliver the e-loop and how is it installed?
igus delivers the e-loop in the way that you prefer: either completely assembled or fully harnessed, on a drum or on a pallet. There is a defined thread at the end of the e-loop for additional mounting. Our installation team is happy to take care of the assembly.
 

How are components prevented from falling down?
The individual chain links are all secured with screw connections, so that no component can fall down.


Installation instructions e-loop

Find out in these installation instructions how to assemble the e-loop with and without cables. 


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The terms "igus", "Apiro", "CFRIP", "chainflex", "conprotect", "CTD", "drygear", "drylin", "dryspin", "dry-tech", "easy chain", "e-chain", "e-chain systems", "e-loop", "e-ketten", "e-kettensysteme", "e-spool", "e-skin", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "print2mold", "readycable", "readychain", "ReBeL", "robolink", "speedigus", "tribofilament", "triflex", "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, Bosh Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mentioned on this website. The products offered by igus® are those of igus® GmbH.