Off-highway trucks feature higher horsepower, reduced fuel use
Equipped with an EPA Tier 4 Final certified engine, the new Komatsu HD325-8 and HD405-8 off-highway trucks feature increased horsepower and a new Komatsu Traction Control System (KTCS) to achieve improved productivity. These models have payload capacities of 40.3 U.S. (short)/36.5 metric tons and 44.1 U.S. (short)/40 metric tons, respectively. They replace the HD325-7 and HD405-7 models.
The new trucks' Komatsu SAA6D140E-7 engines have increased to a net 514 horsepower (383 kW). Fuel consumption is down for the HD325-8 by as much as nine percent, and by as much as six percent for the HD405-8, compared to predecessors. Also, access is better, with sloped stairs and handrails in front, to replace the previous ladder configuration.
The powerful SAA6D140E-7 engine provides a gross power rating of 518 HP (386 KW). The hydraulically actuated Exhaust Gas Recirculation (EGR) and Variable Geometry Turbocharger (VGT) ensure precise operation and quick engine response. Maintenance of Tier 4 Final engines is simplified with enhanced monitor panel capability and service features. KOMTRAX and the monitor panel provide critical information for easy monitoring and key data for production management. Komatsu Diesel Particulate Filter (KDPF) and Selective Catalytic Reduction (SCR) are designed in conjunction with the engine for efficiency and long life. More than 98 percent of KDPF regeneration is performed passively, with no action required of the operator and no interference with machine operation.
For HD325-8 and HD405-8 machines, Komatsu Traction Control System (KTCS) is now standard. KTCS automatically applies independent brake assemblies to achieve optimum traction in varying ground conditions. Because the system operates without the need for differential lock-up, steering performance is not compromised.
Other new standard features for both truck models include a quiet 78 dB(A) cab, seven-inch, LCD color monitor, dedicated rearview monitor, fast-fill fuel system, and a premium heated and ventilated operator's seat with air suspension.
In addition, the tire size for the HD405-8 truck has been increased from 18.00 R33 to 21.00 R33, for extended wear properties.
The HD325-8 and HD405-8 are covered by the Komatsu CARE program for the first three years or 2000 hours, whichever comes first. Komatsu CARE for these models includes complimentary scheduled engine maintenance and two complimentary Komatsu Diesel Particulate Filter exchanges in the first five years. Komatsu CARE lowers ownership costs, raises resale value and improves equipment uptime and availability.
