2021 Volume 17 Issue 2 Pages 124-135
Along with the efforts to achieve the Sustainable Development Goals （SDGs）, environmental initiatives rooted in the circular economy are attracting worldwide attention. In the construction machinery industry, product remanufacturing services have substantial impacts on reducing environmental loads and maintenance cost. This article is the evaluation result of the environmental impact by remanufacturing for mining machine parts. This study focused on the evaluation of gear parts used in swing devices and travel devices of mining machines. Specifically, we quantitatively evaluated new technologies of remanufacturing by investigating each manufacturing and remanufacturing process. The result indicated that the global warming potential （GWP） of material production processes and heat treatment processes account for the large portions of the targeted parts. On the other hand, regarding the resource consumption, the material manufacturing process accounted for the majority at about 100%. These results reveal that the application of the remanufacturing technologies can reduce 20 ton-CO2 eq in a life cycle per mining machines. In addition, resource consumption will be reduced by 5.4 kg Sb-eq / LC.
