The 789 next generation mining truck replaces the current 789 Stage V/Tier 4 Final model.

The new 214-ton Cat 789 haul truck builds on the company’s legacy of proven performance to offer efficiency gains, the next generation of cab comfort, and cutting-edge connectivity. Its design offers a weight advantage to haul more material every load and deliver a cost-per-ton advantage. It is a proven performer. High uptime reliability reduces overall costs to deliver a better bottom line. 

Cat said the new 789 moves more material with less fuel, offering up to 9% reduced fuel consumption compared to the Tier 2 design. An advanced powertrain increases engine life by 12% and delivers better shifting and acceleration. Offering the highest horsepower in its class, this mining truck features 10% more payload and is over 5% faster on grade than competitive trucks. 

With its flexible design, the Cat 3516E engine powering the new 789 is fuel-optimized for lesser regulated countries or can be configured with selective catalytic reduction for meeting EU Stage V and U.S. EPA Tier 4 Final standards. Two power selections offer 1,417 kW (1,900 hp) to match performance of existing fleet trucks or 1,566 kW (2,100 hp) for faster cycle times.

The new engine features design modifications to the camshaft and piston for optimal fuel efficiency, and structural improvements to the cylinder head and crankshaft deliver 12% more durability than the 3516C. The engine’s 23% net torque rise delivers unequalled lugging force during acceleration, on steep grades, and in rough underfoot conditions. 

The 789’s Advanced Power Electronic Control Strategy transmission delivers productivity and efficiency improvements that can reduce cycle times and provide a smoother ride, according to Cat. Forward momentum and torque are maintained while shifting with optimum gear selection, resulting in faster acceleration. It offers more continuous torque and rimpull to deliver more power to the ground, making it possible to use a higher gear on grade to optimize fuel efficiency. 

A choice of multiple body style configurations allows mines to equip the 789 to meet specific site needs. The High-Performance Body maximizes payload by reducing the weight by 2 to 5 metric tons (2.2 to 5.5 tons) or more. The Mine Specific Body excels in mature mines, while the Combination Body combines features of high volume and optional liners to haul both ore and overburden. The original standard Dual Slope Body provides excellent load retention, and the X Body features the latest structural designs and offers more volume at a lower weight. 

The 789’s larger, more ergonomic next-generation cab improves operator efficiency and productivity. At 17% wider, the cab’s walk-through design with fully adjustable center console offers 34% more operator space, 11% more legroom, and 19% more shoulder room. Featuring 40% less sound pressure, the quieter cab includes automated temperature control and cab filtration for a more comfortable environment.