Komatsu has expanded its articulated haul truck range with the launch of the HM460-6, a new model designed to deliver higher productivity, improved fuel efficiency and enhanced traction in demanding off-road applications.
Replacing the HM400-5, the HM460-6 is aimed at quarrying, construction, mining, large-scale site development and infrastructure projects. The truck offers a rated payload of 46.3 tonnes, up from 44.2 tonnes on its predecessor, enabling operators to move more material per cycle while helping reduce the overall cost per tonne.
Power comes from Komatsu’s new DBA127 engine, producing 518hp at 1,700rpm. Equipped with a two-stage turbocharger and paired with a new nine-speed transmission, the powertrain is designed to deliver higher torque at lower engine speeds, improved hill-climbing performance and lower fuel consumption. The simplified engine design also eliminates the need for an exhaust gas recirculation (EGR) system and extends service intervals. It complies with US EPA Tier 4 Final and EU Stage V emissions standards.
The HM460-6 also introduces the Komatsu Traction Control System, which automatically detects wheel slip and applies braking force to individual wheels to maintain traction. Working alongside inter-axle and cross-axle differential locks, the system is intended to improve performance on soft, muddy or uneven terrain while reducing tyre wear and material spillage.
Redesigned cab for operator comfort
Operator comfort and visibility have also been upgraded. A redesigned four-pillar cab increases the glass area by 16% and reduces blind spots by 43% compared with the HM400-5. The cab features revised controls, an 8in main display and a 10in secondary monitor providing machine information, payload data and rear-view camera images.
Standard features include cruise control, automatic retard speed control, hill start assist, a rollover prevention system and brake inspection guidance. Maintenance has also been simplified through a powered tilting engine hood, ground-level service points and telematics that provide fleet managers with machine health and operating data.
“In engineering the HM460-6, the focus is on delivering confident performance in real-world conditions where traction, torque and control make the difference — with extra payload,” said Bruce Boebel, Director, Products and Service. “The new DBA127 engine and advanced traction systems were designed to help operators stay productive on challenging and versatile terrain, while the redesigned cab and service features reflect how closely we listened to customer feedback.”
