Haulmax has released a large capacity rear dump body for its 3900 Series, designed for hauling light materials. At a capacity of 90 m³, the body incorporates a scissor tailgate assembly to ensure material retention over extended haulage distances. The new size complements the standard 50 m³ and 38.5 m³ rear dump bodies. Haulmax says “the ribless body design offers strength and robustness without forsaking weight. Manufactured from 400-450 grade abrasive resistant steel, it is ideal for low specific gravity materials such as coal, lignite, limestone and potash.”
The first large capacity body unit is currently en route to South Africa. After a trial period it will be taken into use with the aim of generating significant population growth in the coal mining industry there and other regions of the world.
The company says that “with the market expanding for this unique haulage product,” it has recognised a niche which it describes as “The Haulmax SolutionT, combining extended haulage distance with a narrow profile, flexibility and reliability. The aim is to build a purpose-designed off-highway hauler, incorporating safety enhancements such as enclosed wet disc brakes on the dual rear wheel drive axles and roll over protection structure (ROPS) as a standard.”
The braking system offers inbuilt reliability, fade resistance and great retarding capabilities; enhancements unique to the enclosed wet disc design. Haulmax chose this concept based on its experience of alternative braking methods being more susceptible to reliability issues under the harsh conditions found in mines. In the larger capacity Haulmax trailer version, the 3900-T, the trailer axles incorporate the same brake groups as found on the drive axles of the cab chassis unit.
Haulmax reports that in a product trial in New Zealand, “inclement weather conditions occasionally prevented the operation of traditional haulers. The Haulmax, however, continued to operate safely due to its surefootedness from its traction and braking capability in soft and slippery underfoot road conditions. The flexibility of the Haulmax product also allows it to be safely used as a tow tractor, service unit and water wagon.”
