... 1. Komatsu Undercarriage Parts. 2, Idler, carrier roller, track roller, sprocket, track shoe, track link, track adjustor Our company is excavator parts manufacturer, we ... excavators of KOMATSU, CATERPILLAR, HITACHI, KOBELCO. Take the undercarriage parts for example, we have the idler, sprocket, track roller/ bottom ... -7SK460-8PC200-8PC300-6PC300LC-7PC300-7PC400-6PC400LC-7PC400-7 Undercarriage Parts