Cable strain relief

Safe ✔ Durable ✔ Reliable ✔

A strain relief for cables is an indispensable element for reliably guiding and protecting cables in industrial applications, mechanical engineering or electronics. A cable strain relief reduces mechanical load and ensures greater safety, durability and reliability of your cable systems.

Strain reliefs from igus have been specially developed for use in energy chain and dynamic applications. They fix cables in energy chains and ensure that cables are not torn out. They are designed for a long cable service life and maximum holding force.

What types of strain relief does igus offer?

chainfix clamps

Can be integrated into KMA mounting brackets
For one, two or three cables on top of each other
Space-saving due to reduced installation height
Durability for dynamic applications
For the following energy chain systems: E4 | E6 | for all plastic-metal mounting brackets (KMA) with C-profile

To the chainfix clamps

Strain relief separators

Can be integrated into the mounting bracket
Strain relief separator can be positioned as required
For applications with medium accelerations
Simple installation, cost-effective
For the following energy chain systems: E2/000 | E2 e-tubes | E6 | T3

To the strain relief separators

Tiewrap plates

For many applications with medium accelerations
Pluggable into the mounting bracket
Individual part in switch cabinet construction or machine assembly
For the following energy chain systems: easy chain | E2/000 | E2 tubes | E4 | E6

To the tiewrap plates

Honeycomb strain relief CFU

Up to 80% faster strain relief
Simply insert cable and hose into honeycomb and close
Strain relief openable on both sides
Simple adjustment of the filling possible
For the following energy chain systems: E2.48 | 3400/3500 | 3450/3480 | R68 | R167/168 | R2.48 | E4.48L/R4.48L | E4.42/H4.42/R4.42 | E61.52 | E6.52/R6.52

To the CFU honeycomb strain relief units

CFV strain relief element

Easy subsequent strain relief of cables, even with closed energy tubes and a wide variety of connectors
Subsequent installation possible without any problems
For the following energy chain systems: E2/000 | R2.1 | E4.1L | E4.1

To the CFV strain relief elements

Strain relief nuggets

Cost-effective, fast strain relief for simple application with low space requirements at medium accelerations
For all KMA mounting brackets with C-profile
For the following energy chain systems: For all KMA with C-profile or top-hat (DIN) rail

To the nugget strain relief blocks

Strain relief connector system CFB

For applications with high accelerations and loads, e.g. machine tools
Standard screw connection
Customised production with no minimum order quantity.
For the following energy chain systems: E4 | E6 | for all plastic-metal mounting brackets (KMA) with C-profile

To the CFB strain relief system

CF.P tensile force monitoring

The CF.P sensor measures the tensile forces on the cables directly at the strain relief
Triggers a shutdown via the NC contact if the forces are too high
Permanently increased tensile forces can lead to cable damage and, in the worst case, to a cable fire

To the tensile strength monitoring CF.P

Why is cable strain relief important?

A strain relief is a mechanical device that prevents tensile forces from acting uncontrollably on cable connections. Strain relief is particularly important in dynamic or heavily stressed applications to prevent damage such as cable breakage or vibrations and shocks.

The right strain relief offers several decisive advantages:

Increased service life of the cables: reduction of mechanical stress and prevention of cable breaks
Greater operational reliability: fewer breakdowns due to damaged cables
Economic efficiency: fewer cable breaks and failures significantly reduce repair and maintenance costs
Better performance: cables can work more trouble-free, even with long and intensive mechanical use

How does a strain relief work?

A cable feed-through with strain relief fixes the cable in the cable gland or in the plug-in connector. The strain relief ensures that external forces are not transferred to the cable, but are absorbed by the structure on which the strain relief is assembled.

The forces at the contacts in the connector or in the cable are then zero. No matter how much the cable moves on the outside, it is at rest on the inside. This protects the contacts and sensitive electronics.

What needs to be considered for strain relief?

To ensure the optimum performance of energy chains, the following criteria should be taken into account:

Cable type and diameter: Flexible cables require different fastenings than thick cables
Movement profile of the energy chain: High speed or tight bend radius influence the requirements
Environmental conditions: Temperature, humidity and chemical load must be considered
Assembly requirements: Quick maintenance or modularity are often decisive

Why use strain relief from igus?

igus has established itself as a leading supplier of energy chains and accessories and offers numerous unique selling points that play a decisive role in the choice of strain relief for cables in energy chains. Here are the main reasons why strain reliefs from igus are the better choice for many applications.

Customised for energy chains
Cable-friendly design
Many years of experience and expertise
Comprehensive testing
Large selection of strain reliefs for energy chains

Minimum gap between the strain relief and the beginning of the bend radius

A series of in-house tests have shown that a small distance between the strain relief and the bend in the energy chain has no negative impact on the durability of chainflex cables. It is therefore possible to integrate a strain relief for cables directly into the mounting bracket. We offer strain relief options, e.g. the chainfix clamp or the space-saving tiewrap plates for almost all energy chains.

Practical testing taking into account a wide range of parameters

igus strain reliefs are tested in our in-house igus laboratory under the influence of fluids such as water or oil at various ambient temperatures, taking a wide range of parameters into account. The interaction of the strain reliefs with the various jacket materials, cables and hoses, of course, also plays a role in the in-house tests