IGUS | energy chains

137 Fully pre-assembled e-chain system ® with several pneumatic and hydraulic hoses Drastically reduce the jacket abrasion of very sti ff cables andhoseswith theE4.1 roller crossbar. The rolling contact surfaceswith tribo-optimised plain bearings increase the service life considerably. Pneumatic hoses In principle, the rules for round cables also apply to pneumatic hoses. In practice, it has been demonstrated that pneumatic hoses are less susceptible to wear. After consultation, they can be laid together more closely than the 10% clearance rule allows. This requires double-sided strain relief. For pneumatic hosesmade of rubber, we recommend that the 10% clearance rule be strictly followed because these hoses tend to stick to each other and to other cables and hoses. Flat cables It isespecially important for flat cables tomove freely at the bend radius. Two adjacent flat cables should be kept apart with separators. If two flat cables are laidon topof one another, we strongly recommend Distribution rules | Cables and hoses ● Pneumatic hoses The igus ® programalsoo ff ers polymer pneumatic hoses called chainflex ® Air ● Flat cables Outer jackets made of rubber must be specified particularly carefully, because of potentially high friction ● Hydraulic hoses Hydraulic hoses need more space: 20% all-around clearance. We recommend e-chains ® with crossbars every link to distribute the force of the hoses over more crossbars! horizontal interior separation. Flat and round cables should be laid separately in the e-chain ® . There should be strain relief at both ends. Flat cables are only recommended to a limited extent for use in e-chains ® . Hydraulic hoses During planning, pay special attention to longitudinal and transverse expansion when the hoses are pressurised. We recommend e-chains ® with crossbars every link to distribute the force of the hoses overmore crossbars. Su ffi cient roommust be left (20%clearance). It is important for selected hoses to be su ffi ciently flexible (they must bend in the specified radius). The surface of the hoses must also be abrasion-resistant and able to glide. The igus ® interior separation elements minimise hose abrasion with their wide, smooth, rounded contact surfaces. Hoses with textile braiding are usually more flexible than those with steel wire braiding. Because lateral hydraulic hosemovements within the e-chain ® can lead to increased abrasion in the hose material, hoses should be secured in position with vertical separators, and jamming must be avoided. Notch separators that snap into the crossbar, for example, keep the hoses firmly in place in the e-chain ® even if there is strong vibration and shocks. Strain relief Hydraulic hoses are most often stretched lengthwise during operation. This must be taken into account when strain relief is applied.More hose length canbe factored inor strain relief implemented. In some cases, one-sided strain relief on the moving end can be tolerated. rollclip In almost all cases, the broad, smooth, rounded contact surfaces of all igus ® e-chains ® /e-tubes are su ffi cient toprotect hydraulic hoses fromabrasion. In extreme cases, the rollclipcanbe subsequently installed. In the crossbar, the hoses come into contact with a series of plastic cylinders which rotate with them. Extreme cases include particularly soft jacket materials, particularly small bend radii, and highly dynamic loads. Our experience shows that over 95% of all applications can be solved without rollclips. 3DCAD, configurators, service life calculation andmore X www.igus.eu