Cab Top GNSS Antenna

No blade mounted GNSS antenna(s), cables to worry about damaging with cab top GNSS antenna. Reduced risk of theft due to low visibility as viewed from ground level.

Stroke Sensing Hydraulic Cylinders

Robust stroke sensing hydraulic cylinders employ proven Komatsu sensor technologies for accurate finish grade performance. Stroke sensing angle cylinder allows machine control system to know the angle of the blade.

Heavy-Duty Aftertreatment System

This new system combines a Komatsu Diesel Particulate Filter (KDPF) and Selective Catalytic Reduction (SCR). The SCR NOx reduction  system injects the correct amount of DEF at the proper rate, transforming NOx into non-toxic water (H2O) and nitrogen gas (N2).

Heavy-Duty Cooled Exhaust Gas Recirculation (EGR) System

The system recirculates a portion of exhaust gas into the air intake and lowers combustion temperatures, thereby  reducing NOx emissions. EGR gas flow has been decreased for Tier 4 Final with the addition of SCR technology. The system achieves a dynamic   reduction of NOx, while helping reduce fuel consumption below Tier 4 Interim levels.

Komatsu Variable Geometry Turbocharger (KVGT) system

The KVGT system features proven Komatsu design hydraulic technology for variable control of air-flow and supplies  optimal air according to load conditions. It provides better exhaust temperature management. The Tier 4 final version has an improved propeller design for increased performance.

Heavy-Duty High-Pressure Common Rail (HPCR) Fuel Injection System

The system is designed to   achieve an optimal injection   of high-pressure fuel by   means of computerized   control, providing close-to-   complete combustion to   reduce PM emissions. The   system uses high pressure injection,   thereby reducing both PM emissions and   fuel consumption over the entire range of engine   operating conditions. The Tier 4 Final engine has advanced fuel injection timing for reduced fuel consumption and lower soot levels.

Komatsu Auto Idle Shutdown

Komatsu auto idle shutdown automatically shuts the engine down after idling for a set period of time to reduce unnecessary fuel consumption and exhaust emissions. The amount of time before the engine is shutdown can be easily programmed from 5 to 60 minutes.

Fuel Efficiency

The efficient HST control system can reduce fuel consumption.

Selectable Working Mode

P mode is the mode designed for powerful operation and maximum production. E mode is designed for general dozing applications providing adequate speed and power while  saving energy. For fuel reduction and energy saving, the monitor panel allows the operator to easily switch the  working mode, depending on the work at hand.

P mode (Power mode)
With P mode, the engine outputs its full power, allowing the machine to perform the work requiring large production, heavy-loads and uphill work.

E mode (Economy mode)
With E mode, the engine outputs enough power for the work without delivering unnecessary power. This mode enables energy saving operation and is ideal on hard or rough  surfaces that often cause shoe slip and work not requiring as much power, such as downhill dozing, leveling and light-load work.

H mode (high engine idle speed mode)
This setting allows subtle changes in load to be detected, which is tailor-made for power-intensive work. Compared to P mode, the engine high-idle speed is higher in H mode.

PAT Dozer with Adjustable Pitch

A power angle power tilt dozer blade with adjustable  blade pitch system is available. This blade is available for the D61EXi/PXi-24 machines. The hydraulic blade  tilt, angling function (and manually adjustable blade  pitch) expand versatility and productivity in a variety  of applications.

Unrivaled Blade Visibility

The D61EXi/PXi-24 incorporates Komatsu's super-slant nose design. Komatsu's innovative design provides excellent blade visibility for improved machine control and increased  efficiency and productivity.

PCCS

The low-effort PCCS joystick controls all directional  movements, including machine travel speed as well as counter-rotation.

Electronic Controlled Hydraulic System

The electronic controlled, palm commanded joystick  provides precise blade  control. New blade angling switch operation provides easier and predictable blade control.

Comfortable Ride with Heated Operator Seat

The operator seat has adjustable lumbar support, tilt and   an electric heater. It is easy to adjust to the operator's shape. Also, the standard seat heat makes it possible to work  comfortably in the winter.

Rear view monitor system

On the large LCD color monitor, the operator can view, through one camera, areas directly behind the machine. This camera can be synchronized with reverse operation.

Parallel Link Undercarriage System (PLUS)

Komatsu's new PLUS provides less downtime, plus longer wear with up to 40% lower undercarriage maintenance costs. Rotating bushings eliminate the cost and downtime for bushing turns, and strengthened rollers and links increase wear life up to two times. With PLUS, individual links can be replaced with common track tools.

Easy Maintenance

Planned maintenance and daily checks are the only way to ensure long service life from equipment. That’s why Komatsu designed the D61EX/PX-24 with conveniently located maintenance points to make necessary inspec-tions and maintenance quick and easy.

Hydraulically-driven swing-up fan
The D61EXi/PXi-24 utilizes a swing-up fan with a gas strut-assisted lift system to provide easy access to the (side-by-side) radiator, oil cooler and charge air cooler. The hydraulic fan has a cleaning mode which can be used for periodic cooler cleaning.

Multi-Monitor with Troubleshooting Function to  Minimize Down Time

Various meters, gauges and warning functions are centrally arranged on the multi-monitor. The monitor simplifies start-up inspection and promptly warns the operator with a   lamp and buzzer if any abnormalities occur. In   addition, countermeasures are indicated in 4 levels to help prevent major machine   problems. Replacement times for required PM services are also indicated.

Engine

Hydrostatic Transmission

Dual-path, hydrostatic transmission provides infinite speed changes up to 9.0 km/h 5.6 mph. The variable capacity travel motors allow the operator to select the optimum speed to match specific jobs. Travel control lock lever and neutral switch.

Final Drive

In-shoe mounted axial piston type travel motors with integrated two-stage planetary gear reduction. Compact in-shoe mount reduces risk of damaged by debris. Bolt-on sprocket for easy displacement.

Steering System

PCCS joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it backward reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation. HST eliminates steering clutches and brakes, providing smooth powerful turns. Fully electronic control enables smooth control. The PCCS utilizes shift buttons to increase and decrease speed.

Undercarriage

Service Refill Capacities

Operating Weight (APROXIMATE)

Hydraulic System

Closed-center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control unit:
All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 171 ltr/min / 45 U.S. gal/min at rated engine rpm.