Low-wear profile rol e-chain® allows a long service life on STS bridge crane

This application involves a 70 tonne overhead travelling crane from the Chinese manufacturer of container gantry cranes, Shanghai Heavy Industry Co. Ltd. and a 65 tonne crane from Shanghai Zhenhua Heavy Industry Co. Energy chains were previously used for the energy supply of the crane trolleys, which led to several problems, in particular a shorter service life and increased maintenance and repair costs. For example, high costs were incurred due to corrosion, increased friction and increased wear. Due to the high running costs, it was rightly decided to look for a new solution for the cable routing. The aim was to realise an energy supply with increased chain strength, reduced friction and minimised wear, extended service life, lower noise during travel and no corrosion, which could not slip when running in the trough.

The operator decided to use a P4.1 rol e-chain on the basis of the local conditions as well as his own experience after extensive research and after detailed comparisons with other systems. This fast running, compact and resistant plastic cable guide for the trolley system of the shore bridges has quickly established itself in the very harsh harbour environment. Another challenge in the overhead cranes, a safe guidance of all cables at constantly high travel speeds of the trolley, does not pose any problems for the e-chain. Unlike the old system, it enables considerable cost and time savings in terms of maintenance and servicing. It also allows the operator more planning reliability and security in ongoing operations. 
All these hoped-for advantages of the new system have already become apparent within the first year.