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Energy chain now faster, stronger and lighter
Igus has introduced a new range of products for port cranes at the TOC Europe in Bremen. The aims are to improve technique, increase lifetime whilst saving costs.
The P4 Energy Chain system is available in two new sizes: P4.32 and P4.42. The P4.42 (42mm inner height) in a heavy-duty design is made for particularly demanding crane applications: high speeds up to 10m/s, long travels up to 800m, high filling weights up to 10 kg/m. In contrast the P4.32 (32mm inner height) has been developed in a new design - lighter and slimmer - for high speeds when the installation space is limited. Upper run and lower run are rolling offset over each other.
Though the plastic profile rolls are not completely parallel, they still roll on a wide surface which greatly increases the lifetime of the chain. Additionally, the pitch of the chain link is equal for links both with and without rollers, so that the energy chain is especially low noise and vibration in operation. The rollers themselves are fixed into the chains side links, whilst the 'auto-glide' cross bars are made of tribologically optimized plastic. A special trough system finally ensures the energy chain runs safely.
With the P4 there is now a product with sufficient reserves available and for the largest cranes in service and being conceived for the future. One Cologne-based company has already mounted the new system (size P4.56) on an RMG crane in the inland port in Duisburg. Also, the P4 successfully runs on a Chinese ship-to-shore crane in a container loading plant (240m/min speed, 126m travel).
There is also a new special cable for these energy chain applications too: the Fibre Optic bus cable Chainflex CFLG.2LB - a universally applicable bus cable for all bus systems giving a high cycle life. The new Fibre Optic cable series for small radii down to 40mm in energy chains helps to save installation space on cranes. Because of the matched length of the fibre optic cores and the aramid strain and torsion relief, more than 8.5 million double strokes have been proved for energy chains in a 38mm test machine. The highly abrasion resistant TPE jacket protects against mechanical damage and is highly oil and chemically resistant too.
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