Page 949 - ASEAN Chainflex Catalogue 2023

Example: ...tested!
Completely twisted
chainflex cables for e-chain system are designed for Unshielded cables, particularly bundled chainflex types, can
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application in linear movements and their efficiency has been be successfully used in many twisted applications.
proved a million times. In twisting movements with a braided shield, the strand wires
wound in one direction are in tension and the other direction
But industrial applications and their motion sequences are in compression. This leads quickly to shield breakage.
becoming increasingly complex, so that special cables are
needed more and more for torsional movements. The service
life of the different designs are even harder to calculate for
torsion applications, as there are no fixed parameters such
as radii, travels etc. Shielded cables however are particularly
vulnerable in torsion applications. Braided shields are generally
braided in the opposite directions. Whether a cable survives
the torsional demands is very strongly dependent on the
application and type of installation.
At igus , the emphasis is not only on technology but also on Product information CFROBOT
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aesthetically designed products. The TRC and TRE series
both received the iF-Design-Award. Page 404
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The igus development of a new twistable, shielded single
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core cable accounts for this and ensures, due to its special
shield design and structure, that no, or absolutely minimal,
forces act on the shield wire.
As the test clearly shows, massive service life extension can be
observed when compared, for example, to a CF310.250.01.
Test setup:
The new CFROBOT cable was tested at the igus laboratory Picture 1: Damaged overall shield sample of the braid version
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in a specially developed torsion test rig. after 250,000 movements
The torsion angle is ±270° for a total cable length of about 2.5
m (tested within different versions of the triflex R).
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Cables tested were:
3 cables of CFROBOT.037
3 cables of the series CF310.250.01.UL
3 cables of the series CF310.250.01
The detail inspection of the shield braid shows damage on
the shield strand wires.
The samples (picture 2) of the CFROBOT.037 (so far samples
were taken after 250,000, 1.5 million and 3 million movements)
showed no damage in the area of the cable or the overall shield
even after above 3 million torsional movements of ± 270°.
Picture 2: The CFROBOT shows absolutely no damage after
more than 3 million movements
The detailed analyses (picture 3) of the shield wires, buffer
fibres, PTFE film and the cable show no damage. The test is
being continued further to determine the maximum service
life of the cable.
igus test lab: The cables were tested in movements of ± 270°
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The initial test sample of the CF310 with braided shield and
the CFROBOT were taken after 250,000 movements with a
torsion angle of ± 270°.
The cable dissection was undertaken in three areas of the
cable length. In the sample illustrated in Picture 1, distinct
damage to the overall shield is noticeable in the upper third
of the cable. Picture 3: Detail pictures of the CFROBOT after more than 3
million movements of ±270°
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