Komatsu America has introduced its HM300-5 articulated dump truck exhibited earlier this year at Conex.
The Tier 4 truck has a net 324hp (242 kW) Komatsu engine, a 30.9 ton (28tonne) payload and a gross vehicle weight of 117,892 lbs.(53 tonnes), t
The 9’2″ loading height easily matches 30-ton to 60-ton hydraulic excavators or 5 yd to 7.5 yd wheel loaders. Additionally, the two single-staged body lift cylinders provide a 70-degee dump angle.
Selectable working modes allow the operator to choose between Economy and Power modes to tailor machine performance to the application or work conditions.
The HM300-5 features the Komatsu Traction Control System (K-TCS) that automatically provides optimum traction when operating in soft ground conditions. As ground conditions worsen and tire slippage is detected by the speed sensors located on four wheels, automatic application of the inter-axle lock occurs. If tire slippage continues to be detected, then four independent brakes can be applied to slipping wheels to regain traction.
The HM300-5 has Komatsu’s Advanced Transmission with Optimum Modulation Control System. This offers a six-speed, fully-automatic transmission that uses an advanced electronic system to eliminate shift shock and torque cutoff to improve operator and engine efficiency. It automatically selects the ideal gear based on vehicle speed, engine rpm and the shift position chosen. This results in powerful acceleration, smooth down- shifting and synchronized engine speed when climbing slopes. This minimizes operator fatigue, keeps the load in the body and increases productivity.
A large automatic retarder allows the operator to select the bestoperating speed on downhill travel and fully loaded hauls, eliminating acceleration generated by the grade of the slope.
An integrated Payload Meter is standard on the HM300-5. This displays the loaded material weight on the 7″ high-resolution LCD monitor for the truck operator as well as indicates payload information to the loader operator via external display lamps. Data is also transferred via Komtrax and can be accessed by web.