Heavy-duty truck HHD9

3-axlefor mining applicationsfor construction

Reinforced version of the HD9 tractor, the HHD9 offers in excess of 300 tons of total combined weight and is available in a 3-axle configuration or in the more highly customised 8×8 version for oversize loads. The HHD9 tractor is ideal for oversize loads in difficult weather and terrain conditions. PRODUCTIVITY The HD9 tractor boasts features that make it a champion of productivity: the high value of the combined total mass enables the use of trailers with high capacities reducing the time of the working cycle. Its robustness ensures it is reliable. The simplicity of its mechanical and electronic structure limits maintenance time and costs. Loads up to 10 tons thanks to reinforced front drive axles for the most arduous off-road use (routes with steep slopes or heavy loads concentrated on the front of the vehicle). Loads up to 20 tons for each rear axle with width of 2.9 m, and standard reinforced suspension. Reinforced rear axles TOTAL COMBINED WEIGHT ABOVE 300 TONS Total combined weight above 300 tons depending on the configuration of the vehicle. FRAME 820 mm wide, unique heavy duty chassis Two side members in high resistance special steel with a tensile strength of 530 Mpa with large sections to ensure easy equipment mounting, and most importantly, a high level of torsional stiffness (up to 300 kNm) and high stability in the most extreme situations. POWER RING To increase the robustness and rigidity of the entire structure of the chassis, Astra has patented the power ring: a closed ring structure of the rear suspension, made up of cast iron carriage shoulders and a lower cross member, which improves the redistribution of forces on the tandem.