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Komatsu » HM300-3 / HM400-3

Komatsu America Corp. at the CONEXPO-CON/AGG the HM300-3 articulated truck. With a flywheel horsepower of 325 hp (242 kW), the HM300-3 is powered by a Komatsu SAA6D125E-6 engine and is EPA Tier 4 Interim and EU Stage 3B emission certified. The Komatsu Tier 4 Interim engine uses an advanced electronic control system to manage air flow rate, fuel injection, combustion parameters, and aftertreatment functions to optimize performance, reduce emissions, and provide advanced diagnostic capability.

The HM300-3 features a maximum gross vehicle weight (GVW) of 115,147 lb (52,230 kg). It can haul up to a 31 ton (28.1 metric ton) payload at its maximum ground speed of 36.4 mph (58.6 kph). The HM300-3 features the new Komatsu Traction Control System (K-TCS). The K-TCS system automatically provides optimum traction when operating in soft ground conditions. As ground conditions worsen and tire slippage is detected by speed sensors located on four wheels, automatic application of the inter-axle differential lock occurs. If tire slippage continues to be detected then four independent brakes can be applied to slipping wheels to regain traction.

Through body design optimization, the HM300-3 features increased body capacity and payload. The low 9’2” (2820mm) loading height easily matches with 30-ton to 60-ton hydraulic excavators or 5 yd³ to 7.5 yd³ wheel loaders. In addition, the two single-staged body lift cylinders provide a 70-degee dump angle. The new cab design provides a comfortable and quiet work environment so operators can maximize their productivity. The ROPS/FOPS Level 2 certified cab features a new rounded front dash panel with easy to reach switches. The dashboard has been redesigned and relocation of the high back, heated air ride seat with point seat belt improves operator visibility.

At the end of 2011, Komatsu presented 40-ton model HM400-3 with Komatsu SAA6D140E-6 engine with an output of 350 kW (469 hp). Its GVW is 73740 kg. As a leader in hydraulic technology, Komatsu has also developed a hydraulically actuated Variable Geometry Turbocharger (KVGT) and Exhaust Gas Recirculation (EGR) valve, resulting in better precision and air management as well as longer component life. The Komatsu Diesel Particulate Filter (KDPF) has an integrated design that will not interfere with daily operation but will keep the operator aware of its status. The HM400-3 is enhanced with K-ATOMiCS—Komatsu Advanced Transmission with Optimum Modulation Control System. K-ATOMiCS 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.

HM300-3 / HM400-3HM300-3 / HM400-3
Komatsu HM300-3Komatsu HM400-3

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Komatsu HM400-3
Komatsu HM400-3

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