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igus® Ltd.

Caswell Road

Northampton, NN4 7PW

01604 677240

chainfix strain relief: clamps

chainfix clamps

Strain reliefs for e-chains® with clamps and pressure elements

The principle of clamps has proven very successful as strain relief for igus® e-chain systems®. Clamps are a suitable means of strain relief for all e-chains® with KMA mounting bracket and C-rails 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

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

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

CFX clamps

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

Clamps with wide base for increased retention force

CFXL clamps

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

CFXL clamps

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

For all igus® CFX clamps and KMA mounting brackets with C profile housing option

Heavy-Duty C-profile

For all igus® CFXL clamps

Chainfix clamps - mounted safely and even faster

Can be integrated in all e-chains® with KMA mounting bracket and C profile option

Good readability of part number and lateral marking of the correct installation direction

Reduced installation height through optimal housing height (compared to conventional clamps up to 15 mm)

Space-saving and time-saving assembly

Possibility of delivery for complete systems with cables and assembled strain relief device

Improved foot for facilitated installation on the C profile

Easy to assemble due to set screws screwed in with hexagon socket

Long service life for dynamic applications due to improved pressure elements: Optimieredte double troughs, captive through holding lugs

The long load-bearing surface of the pressure elements improves the stability of the clamp.

The high rigidity of the pressure elements remarkably increases the operational safety.

Integrated ribs on the pressure elements - no loosening of the cable from the strain relief

Optional: CFXL clamps with increased holding power for heavy-duty applications (CFXL clamps are always installed in front of the e-chain® - CANNOT be integrated in KMA mounting brackets with C profile housing option!)

Assembly video CFX clamp in chain

Chainfix offers reduced installation height through set screw and optimal housing height

Overall height

When the e-chain® glides on itself in long travels, the screwheads of the strain relief need to have a minimum distance of 10 mm to the upper edge of the e-chains® at the fixed end. This restriction means that it may not be possible to use all strain relief elements here at the fixed end of long travel e-chains®. Our clamps with threaded screws specifically designed for low installation height, reduce the installation height by up to 15 mm compared to conventional clamps. For unsupported e-chains® strain relief elements can be safely used.

Assembly video CFX clamp

Please note:

The cables should be ideally fixed on both ends of the e-chains®. In any case they have to be fixed to the moving end of the e-chains®!

In the application of chainfix clamps on C profiles in the mounting bracket for Series 280, 2828, 290, 2928, R770, R7728, a shortened mating trough has to be used.
Part no. for that is: CFX...K (add the letter "K" to the Part no. mentioned above)


I would be happy to answer your questions personally

Shipping and consultation

In person:

Monday to Friday from 8am - 8pm.