Komatsu HM400-2 is a rigid-frame articulated dump truck used in heavy construction, quarry, and mining haul applications. It is powered by a Komatsu diesel engine and designed for efficient material transport over rough terrain. The HM400-2 features a high-capacity dump body, all-wheel drive, and articulated steering for maneuverability on uneven job sites. Its operator cab is configured for visibility, control, and productivity in demanding conditions. Common uses include earthmoving, aggregate hauling, and site development. The model is part of Komatsu's HM series and is recognized for durability, traction, and off-road hauling performance.