Komatsu PC400 is a hydraulic excavator in Komatsu's large excavator range, used for earthmoving, site preparation, trenching, demolition support, and material handling. The PC400 series is typically configured with a crawler undercarriage, a boom and arm assembly, and a bucket for digging and loading operations. Depending on the specific variant, it may be equipped with different engine, hydraulic, and attachment options to suit construction, quarry, and mining applications. The model designation PC400 is commonly associated with high-capacity excavator performance in heavy-duty work environments. Exact specifications vary by year, region, and machine configuration.