Kobelco Excavators Production In Japan - Factory Tour This is Itsukaichi factory in Japan where assembly workers has to hand-building Kobelco excavators. Here are produced of medium, large hydraulic excavators in the range of 7 to 220 tons. Also, the production of mini excavators was established at the Ogaki (Japan) plant and the Chengdu (China) plant manufactures from small-size to large-size excavators. 0:06 Steel fabrication 1:34 Excavator arms welding 3:33 Painting 6:33 Installation track system 7:36 Sub assembly 8:48 Body assembly 9:19 Lower-upper structure docking 10:21 Cab installing 11:09 mini excavator assembly 12:43 Main assembly 14:28 Assembling a lifting system with excavator arms 15:50 Rigging and testing