Page 953 - ASEAN Chainflex Catalogue 2023

Example: ...tested! Example: ...tested!

Comparison of jacket materials Completely twisted,

exposed to different oils take two.

For years now, specially developed tests tailored to the In this way, customers not only get a statement about the The "torsion-resistant" requirement for cables for energy
individual requirements of igus customers have been used different resistance of the various materials such as given chains is not new, but is seldom exactly defined. So how is a
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to obtain more meaningful results than if standard tests were by following the above-mentioned standards, but also an statement such as "This cable is torsion-resistant up to ±180
used. The relatively general terms such as "oil-resistant" or estimation of the real service life of the cable in an e-chain °" to be understood? This makes it all the more important to
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"coolant-resistant" are little help in making the right selection in these conditions. be able to deliver comparable and meaningful test results.
in terms of jacket material to be used for an application with
oil, lubricant or coolant influence. If the test samples - such as the cables shown - do not In order to satisfy this requirement, the "torsion test bench"
complete the prescribed test duration, we advise against use was developed according to the igus standard. Here, various
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Alongside the generally applicable tests according to e.g. DIN in the respective application. cable types are twisted to a prescribed cable length of 1
EN 60811-2-1 and IEC 60811-1-1, "everyday application metre, which also corresponds to the distance between the
conditions" are simulated as realistically as possible in a test fixed points. The degree of torsion can be chosen, and is
set-up matching our customers' requirements. Thus, for defined individually according to the test requirement, and
example, test samples are mounted in an energy chain that the standard test is ±180 °.
moves into an "oil bath" and then back out of it again. There
is direct and alternating contact between the outer jacket and After a prescribed number of double strokes or a negative
the medium to be tested and the air surrounding the energy electrical or mechanical test result, the test specimen is
chain and cable - just as in a real application. dissected, and the type and position of any damage can be
exactly determined.
After a test duration for a customer application or defined
according to the igus standard, test samples can be The first chainflex CFROBOT cable types were developed to
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examined for changes in material characteristics e.g. by series with help of the data of these tests.
comparing material strength, elongation at tear and swelling
with the values noted before the test started.

Product information CFROBOT
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Cracks in the outer jackets of materials from competitors The "torsion test bench" developed according
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caused by the use in e-chains . to the igus standard
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