Komatsu America Corp. Launches the New D65-18 Crawler Dozer

D65-18Komatsu America Corp. today introduced its new line of D65-18 crawler dozers which are powered by a more powerful 217 net HP, Komatsu SAA6D114E-6 engine which is EPA Tier 4 Final emissions certified. Komatsu’s Tier 4 Final engines were built on a solid foundation that started in 1996 with the introduction of Komatsu’s first Tier 1 engines. The resulting benefit today is a Tier 4 Final engine that is productive, dependable and efficient. This new crawler dozer leverages Komatsu’s leadership in technology and innovation by delivering an environmentally friendly engine that provides high levels of performance while reducing full consumption and operating costs.

A standard (EX), low ground pressure (PX) and a wide (WX) track model are available to offer customers flotation and weight distribution options that best match their applications. Operating weight ranges from 45,628 lbs to 51,960 lbs depending on the version.

The D65-18 combines the revolutionary SIGMADOZER* blade with a highly efficient automatic transmission with torque converter lock-up to achieve exceptional productivity and fuel economy. A durable Komatsu 6-way Power Angle Tilt (PAT) blade is also available for all models, creating a versatile and agile tractor for various dozing operations.

The crawler dozers are equipped with the latest KOMTRAX® technology. Data such as fuel levels, DEF levels, operating hours, location, cautions and maintenance alerts are relayed to the web application for analysis. A new Operator Identification System reports key operating information for multiple operators and a new Auto Idle Shutdown function helps reduce idle time as well as operating.

Special features of these new crawler dozers include:

Komatsu EPA Tier 4 Final Emission Certified Engine – Productive, Dependable, Efficient

Komatsu has built upon its strengths using a proven Tier 4 Interim foundation to integrate Selective Catalyst Reduction (SCR) that further reduces NOx emissions using DEF. The Komatsu EPA Tier 4 Final engine uses an advanced electronic control system to manage the air flow rate, fuel injection, combustion parameters, and after treatment functions to optimize performance, reduce emissions, and provide advanced diagnostic capability. The result is lower fuel consumption with no loss of performance. Komatsu continues to use a Komatsu Variable Geometry Turbocharger (KVGT) and a hydraulic Exhaust Gas Recirculation (EGR) valve for more precise temperature and air management control as well as longer component life.

To ensure product reliability and durability in demanding conditions, Komatsu developed the entire system, including the control software which is critical to the effective operation of the aftertreatment system. This control system is also integrated into the machine’s on-board diagnostics systems and KOMTRAX®, Komatsu’s standard telematics system.

Diverse choice of blades for versatility and performance

The D65EX and WX are equipped with SIGMADOZER, providing the machine with a large blade capacity of 7.34 yd³ and 7.72 yd³ respectively. Based on a completely new excavation theory, SIGMADOZER dramatically improves dozing performance and increases productivity by up to 15% over conventional Semi-U blades. The Komatsu designed blade increases soil holding capacity while simultaneously reducing sideway spillage because it digs and rolls material up at the center of the blade. SIGMADOZER also reduces digging resistance producing a smoother flow of material enabling the dozing of larger amounts of soil with less power.

A durable PAT blade is also available for each model. The manually adjustable blade pitch further expands the versatility and productivity in many applications.

Automatic shift transmission significantly improves fuel economy

The D65-18 has a new automatic transmission with lock up torque converter that greatly reduces fuel consumption and offers greater power train efficiency. The lockup mechanics of the torque converter automatically transfers engine power directly to the transmission, reducing fuel consumption by up to 10 percent.

Two gearshift modes – automatic or manual – can be easily selected to fit the appropriate application: automatic for all general dozing and manual for dozing and ripping rough ground.

Economy and Power modes help match machine performance to the application. E Mode is chosen for all general dozing, leveling and spreading applications providing adequate speed and power while saving up to 10% fuel usage. P Mode is chosen for heavier applications where engine power has priority over fuel consumption.

Ergonomic joystick controls for ease of operation and comfort

Komatsu’s Palm Command Control System (PCCS) gives operators maximum control, offering a relaxed posture and superb fine control to minimize operator fatigue. The pilot controlled hydraulic blade and ripper control joystick offer excellent blade and ripper fine control.

Powerful turns under various work conditions are achieved with the Hydrostatic Steering System (HSS) to transmit power to both tracks without interruption. Counter-rotation is available in neutral for minimum turning radius, providing excellent maneuverability

Cab design creates optimal operator environment

The crawler dozer’s comfortable cab allows the operator to concentrate on the work at hand for increased productivity. The large cab is integrated with ROPS and includes a standard air suspension seat with heat.

The cab provides a noticeably quiet work environment with viscous cab mounts. A large 7” high resolution color LCD monitor in the cab displays all machine information. A comfortable standard air suspension seat with heat enhances operator comfort further. A rear view monitoring system is standard and can be set to synchronize with reverse operation.

Convenient maintenance and reduced operation costs.

Recognizing that maintenance is critical for successful equipment uptime, Komatsu has designed the D65-18 with easy routine maintenance in mind. Daily engine checks are grouped at the left hand side of the engine compartment. A manually reversing fan allows for quick cleaning of the radiator. The D65-18 also comes standard with the Parallel Link Undercarriage System (PLUS). This rotary bushing system doubles the undercarriage life compared to prior conventional systems, significantly lowering owning and operating costs.

All Komatsu Tier 4 Final construction machines come with Komatsu CARE. Komatsu CARE provides scheduled factory maintenance for the first 2,000 hours or three years, which includes a 50 point inspection at each service, and two complimentary KDPF exchanges in the first five years.

*SIGMADOZER is a registered trademark of Komatsu Ltd., Japan.

Komatsu America Corp. is a U.S. subsidiary of Komatsu Ltd., the world’s second largest manufacturer and supplier of construction, mining and compact construction equipment. Komatsu America also serves forklift and forestry markets. 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 for more information.


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