Articulated Dump Truck has hydro-pneumatic suspension system.

Press Release Summary:



Constructed of wear-resistant steel with 400 Brinell hardness, Model HM300-2 can haul up to 30 tons at top rated speed of 36.4 mph. Loading height is 9 ft 2 in. and heaped capacity is 21.7 yd³. Hydro-pneumatic suspension in both front and rear keeps tires on ground at all times and truck has water-cooled, 4-cycle, 340 net HP EPA Tier 3 certified engine. Truck features wet-type, multiple disc brake and retarder combination, providing retarder absorbing capacity of 468 hp.



Original Press Release:



Komatsu Introduces the Proven HM300-2 Articulated Dump Truck



o EPA Tier 3 emissions certified engine offers superior GVW-to-horsepower ratio
o Hydro-pneumatic suspension in both the front and rear suspensions
o High capacity, wet-type, multiple-disc brake and retarder combination
o Comfortable cab and improved service intervals
o Maintenance free center hinge

Rolling Meadows, IL, For CONEXPO - CON/AGG 2008- Komatsu America Corp. announces the HM300-2 articulated truck designed to provide earthmoving, road construction and quarry markets with proven reliability and higher performance with a lower cost-per-ton.
A powerful Komatsu SAA6D125E-5 engine offers a superior gross vehicle weight (GVW)-to-horsepower ratio, lowering cost-per-ton and bettering grade climbing and descending capabilities. The water-cooled, 4-cycle 340 net HP engine is EPA Tier 3 emissions certified, offering maximum productivity through more horsepower and higher engine output and torque. This delivers higher travel speeds and high horsepower per ton. The engine also is equipped with a power mode selection system (Power and Economy) for improved fuel economy. The HM300-2 features a maximum GVW of 113,360 pounds, capable of hauling up to a 30-ton payload at its top rated speed of 36.4 mph.

The HM300-2 is equipped with the latest Komtrax(TM) technology which sends machine operating information to a secure website utilizing wireless technology. Data such as operating hours, machine location and fuel levels are relayed to the web application for analysis. The Komtrax fleet monitoring system increases machine availability, reduces the risk of machine theft and provides a wealth of other information to drive business efficiency.

Special features of the HM300-2 include:

o Hydro-Pneumatic Suspension For Superior Ride
The HM300-2 offers a smooth ride with hydro-pneumatic suspension in both the front and rear for keeping the tires on the ground at all times. The front axle hydro-pneumatic suspension employs a trailing-type design, allowing the truck to travel smoothly over bumps. In addition, a fully hydraulic articulated steering system provides light and easy operation, with a minimum turning radius of 26 ft., 1 in. enabling it to work in tight areas.

o Excellent Braking Performance
For superior stopping power and reliability, the HM300-2 comes with a high capacity, wet-type, multiple disc brake and retarder combination, providing a retarder absorbing capacity of 468 HP. The oil-cooled multiple-disc interaxle lock can be turned on and offduring travel. In addition, the limited slip differentials automatically prevent the tires on either side from slipping on soft ground for maximum traction, and the truck comes equipped with a full-time six-wheel drive system to further reduce slippage. A wet, multiple-disk interaxle clutch also locks the three axles in unison for greater traction. In addition, the service brakes are all wet-disc type for a further reduction in operating costs.

o Easy Load Body Design
The HM300-2 was designed to have an easy-to-load body, with a low loading height of
9ft. 2 in., and a heaped capacity of 21.7 yd³. The high-strength body is constructed of thick, wear-resistant steel with 400 Brinell hardness, and the body shape provides for excellent load stability and retention.

o Komatsu Designed And Proven Transmission
Komatsu designed an electronically controlled transmission for the HM300-2 ensuring a comfortable ride. The F6-R counter-shaft type transmission comes with K-ATOMiCS (Komatsu Advanced Transmission with Optimum Modulation Control System), a cutting-edge system that assures smooth shifts without shock and maximizes power train life. The standard transmission shift hold button optimizes the operator control or the transmission will automatically shift through all gears.

o Operator Cab Comfort
For improved operator comfort, the wide, ergonomically designed cab is mounted on viscous mounts to absorb vibrations and noise and is integrated with the floor for better sealing and lower noise levels (76dB(A)). An air suspension seat is standard and additional front mirrors and large electronically operated side windows and an electronically heated rear window provide superior visibility. Low-effort pedals reduce operator fatigue when working for long periods, and the tiltable, telescoping steering column enables optimum driving position at all times. An electric body dump control lever makes dumping easier than ever.

o Easy Maintenance And Serviceability
The HM300-2's cab is tiltable 32 degrees towards the rear for easier service access, and has fewer grease points with the use of maintenance-free rubber bushings. Service intervals have been extended to minimize operating costs, with engine oil and filter changes required at 500 hours and transmission oil and filter changes at 1,000 hours.

o Parts Commonality And Best Matched Machines
By combining Komatsu equipment owners and operators experience better cycle times, increased productivity and a reduction in costly downtime due to better parts availability. Because many components on the HM300-2 are Komatsu designed, many are interchangeable with other Komatsu trucks, excavators and wheel loaders- aiding in parts availability. Komatsu offers several matches for the HM300-2 including the PC200, PC300 and PC400 class hydraulic excavators as well as the WA320, WA380 and WA400 series wheel loaders for optimum loading and cycle times.

Further enhancing the HM300-2's durability is a standard guarding package, including:
o A protective grill for the rear window
o Engine and heavy-duty transmission underguard
o A propeller shaft guard
o An exhaust thermal guard
o Fire prevention covers
o Rear tire guards

Komatsu America Corp. is a U.S. subsidiary of Komatsu Ltd. which is the world's second largest manufacturer and supplier of construction, mining and compact construction equipment. Through its distributor network, Komatsu offers a state-of-the-art parts and service program to support the equipment. Komatsu has proudly been providing high-quality reliable products for nearly a century. Visit the website at www.komatsuamerica.com for more information.

Peter Drummond
Komatsu America Corp.
847.437.4559

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