Chainflex cables

Example 12: tested,tested, tested!Service life comparisionRegular production inspections increase the operationalreliability of machines. In addition to tests performed inthe igus ® in-house laboratory, where new superstructuralparts, materials, and customer requirements are constantlybeing inspected, igus ® also performs production-accompanyinginspections.Next to batch tests, which immediately reveal any productionrelateddefects and provide the user with maximum reliability,long-term inspections are performed again and again.These long-term inspections, which can take up to four years– and emphasize the effort and expenditure required for suchseries of systematic tests – are necessary if the constantlygrowing market demands are to be met.This also applies to the long-term inspection of theChainflex ® servo cable families CF21.UL and CF27.D. Theseservo cables, which are based on a modular system and onlydiffer in their inner and outer jacket materials in terms ofproduction details, were tested for more than 2,5 years at aradius of 100 mm, a travel distance of approx. 8 m, an accelerationof approx. 6 m/s 2 , and a velocity of approx. 3,5 m/s.A core number / cross-section combination which is widelyaccepted in the field of mechanical engineering but also resultsin failures due to the extremely asymmetric setup in the caseof many normal – so-called chain-suitable – cable superstructuralparts was deliberately selected.44