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chainfix strain relief: clamps

Strain relief for cables in energy chains with clamps and stacker elements

The principle of clamps as strain relief has proven very successful for cables in energy chains. Clamps are a suitable means of strain relief for all energy chains with a KMA mounting bracket and C-rail option.

Product range and materials

  • Steel clamp: clamp and screw black painted steel
  • Stainless steel clamp: clamp and screw: blank (material 1.4301)
  • Stacker elements: bottom saddle and stacker saddle (igumid G material)
  • C-profiles: steel (material galvanised steel) or stainless steel (material 1.4301) available
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Tech up

Tech up

  • 3.5 times higher force absorption than standard clamps
  • Painted steel or stainless steel
  • For two different C rail sizes
  • CFX standard clamps with normal base and CFXL clamps with wide base for increased holding force available
Cost down

Cost down

  • Cost-effective standard component
  • Easy to retrofit
  • Cost-effective strain relief for large hose and cable diameters
  • Space and time-saving assembly
  • Assembly-friendly


Tested in the igus lab:
  • A) Tensile strength test CFX clamps with stacker saddle
  • B) Comparison test of 3 different strain relief systems.
Conclusion: more than triple tensile strength of igus chainfix clamps
when compared with
conventional products


NEW clamps

Steel part no.Part No. stainless steelCable diameter øOuter widthOuter height
CFX46.1*CFX46.1.E*42-46mm51 mm110 mm
CFXL46.1*CFXL46.1.E*42-46mm51 mm110 mm
CFX50.1*CFX50.1.E*42-46mm55 mm115 mm
CFXL50.1*CFXL50.1.E*46-50mm55 mm115 mm

*Available from spring 2020

Delivery programs

Standard clamps with normal base

CFX clamps, steel

Single clamps, double clamps, triple clamps, incl mating and double troughs.

CFX clamps, stainless steel

Single clamps, double clamps, incl bottom saddle and double troughs.

Clamps with wide base for increased retention force

CFXL clamps, steel

Single clamps, double clamps, triple clamps, incl mating and double troughs.

CFXL clamps, stainless steel

Single clamps, double clamps, incl bottom saddle and double troughs.

Multiple clamps

Multi-clamps (steel and stainless steel)

Universal strain relief - compact and modular


Standard C-profiles

Suitable for C-profile 92.42.XXX - can be integrated into KMAs with the C-profile option

Heavy-Duty C-profile

Suitable for C-profile 92.52.XXX, always assembled before the energy chain. Cannot be integrated into KMA!

Chainfix clamps - mounted safely and even faster

  • Up to 15mm lower installation height than that of conventional clamps thanks to optimised housing height
  • Up to 3.5 times the force absorption of conventional clamps
  • Easy to read the part number and mark indicating the correct installation direction
  • Space and time-saving assembly
  • Improved base for easier fit into the C-profile
  • Simple assembly with threaded pins screwed with an Allen wrench
  • Durability for dynamic applications with improved stacker elements
  • Integrated ribs on the stacker elements prevent the cables from coming loose from the strain relief
Assembly video CFX clamp in chain

Assembly video CFX clamp

Please note:

  • Ideally, cables should be fixed at both ends of the energy chain. In any case, they must be attached at the energy chain's moving end!
  • Using chainfix clamps on C-profiles in the mounting bracket for series 280, 2828, 290, 2928, R770, and R7728 requires a shortened bottom saddle. For shortened bottom saddles, add "K" to the part number. Example: Part No. CFX12.1K
Chainfix offers reduced installation height through set screw and optimal housing height

Overall height

If the energy chain glides over itself on long travels, screw heads on the strain relief element at the chain's fixed end must be at least 10mm from the top of the energy chain. As a result, many strain relief elements described here may be unsuitable for use at the fixed ends of long energy chains. Our clamps with threaded screws, developed specifically for low installation heights, have an installation height that is up to 15mm lower than that of conventional clamps. Strain relief elements can always be safely used for unsupported energy chains.

The terms "Apiro", "AutoChain", "CFRIP", "chainflex", "chainge", "chains for cranes", "ConProtect", "cradle-chain", "CTD", "drygear", "drylin", "dryspin", "dry-tech", "dryway", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-loop", "energy chain", "energy chain systems", "enjoyneering", "e-skin", "e-spool", "fixflex", "flizz", "i.Cee", "ibow", "igear", "iglidur", "igubal", "igumid", "igus", "igus improves what moves", "igus:bike", "igusGO", "igutex", "iguverse", "iguversum", "kineKIT", "kopla", "manus", "motion plastics", "motion polymers", "motionary", "plastics for longer life", "print2mold", "Rawbot", "RBTX", "readycable", "readychain", "ReBeL", "ReCyycle", "reguse", "robolink", "Rohbot", "savfe", "speedigus", "superwise", "take the dryway", "tribofilament", "triflex", "twisterchain", "when it moves, igus improves", "xirodur", "xiros" and "yes" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries. This is a non-exhaustive list of trademarks (e.g. pending trademark applications or registered trademarks) of igus GmbH or affiliated companies of igus in Germany, the European Union, the USA and/or other countries or jurisdictions.

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