| Rated rpm | 2200 rpm |
|---|---|
| Operating Weight | 18520 kg 40,830 lb |
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).
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.
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.
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 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.
The efficient electronically controlled HST system can reduce fuel consumption.
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.
A power angle power tilt dozer blade with adjustable blade pitch system is available. This blade is available for the D61EX/PX-24 machines. The hydraulic blade tilt, angling function (and manually adjustable blade pitch) expand versatility and productivity in a variety of applications.
The D61EX/PX-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.
The low-effort PCCS joystick controls all directional movements, including machine travel speed as well as counter-rotation.
The electronic controlled, palm commanded joystick provides precise blade control. New blade angling switch operation provides easier and predictable blade control.
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.
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.
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.
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 D61EX/PX-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.
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.
| Model | Komatsu SAA6D107E-3* | |
| Type | 4-cycle, water-cooled, direct injection | |
| Aspiration | Variable geometry, water-cooled, turbocharged, air-to-air aftercooled, cooled EGR | |
| Number of cylinders | 6 | |
| Bore x stroke | 107 mm x 124 mm | 4.21" x 4.88" |
| Piston displacement | 6.69 ltr | 408 in³ |
| Governor | All-speed and mid-range, electronic | |
| Horsepower: | ||
| SAE J1995 - Gross | 127 kW | 170 HP |
| ISO 9249 / SAE J1349 - Net | 125 kW | 168 HP |
| Hydraulic fan at maximum speed - Net | 113 kW | 152 HP |
| Rated rpm | 2200 rpm | |
| Fan drive type | Hydraulic | |
| Lubrication system: | ||
| Method | Gear pump, force lubricationn | |
| Filter | Full-flow | |
| *EPA Tier 4 Final emissions certified |
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.
| Travel speed (quick shift mode)* | Forward | Reverse |
| 1st | 0-3.4 km/h 0-2.1 mph | 0-4.1 km/h 0-2.5 mph |
| 2nd | 0-5.6 km/h 0-3.5 mph | 0-6.5 km/h 0-4.0 mph |
| 3rd | 0-9.0 km/h 0-5.6 mph | 0-9.0 km/h 0-5.6 mph |
| Travel speed (variable mode) | 0-9.0 km/h 0-5.6 mph | 0-9.0 km/h 0-5.6 mph |
| *Quick shift speeds are adjustable in the monitor. |
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.
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.
| Minimum turning radius | 2.1 m | 83" |
| Suspension | Oscillating-type with equalizer bar and pivot shafts | |
| Track roller frame | Monocoque, large section, durable construction | |
| Rollers and idlers | Lubricated track rollers | |
| Lubricated tracks | Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. | Track tension is easily adjusted with grease gun. |
| Number of track rollers (each side) | 8 | |
| Type of shoes (standard) | Single grouser | |
| Number of shoes (each side) | 46 | |
| Grouser height | 57.5 mm | 2.3" |
| Shoe width (standard) | 600 mm | 24" |
| Ground contact area | 37980 cm² | 5,887 in² |
| Ground pressure (with dozer, ROPS cab) (ISO 16754) | 43.2 kPa 0.44 kgf/cm² | 6.27 psi |
| Track gauge | 1900 mm | 6'3" |
| Length of track on ground | 3165 mm | 10'4" |
| Coolant | 45 ltr | 11.9 U.S. gal |
| Fuel tank | 372 ltr | 98.3 U.S. gal |
| Engine oil | 27 ltr | 7.2 U.S. gal |
| Hydraulic tank | 101 ltr | 26.7 U.S. gal |
| Final drive (each side) | 8.1 ltr | 2.2 U.S. gal |
| DEF tank | 20.6 ltr | 5.4 U.S. gal |
| Tractor weight: | Including ROPS cab, U frame for power angle tilt dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. | |
| D61EX-23 | 17530 kg | 38,647 lb |
| Operating weight: | Including Power Angle Tilt dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, hydraulic control unit, coolant, and full fuel tank. | |
| D61EX-23 | 18520 kg | 40,830 lb |
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.
| Relief valve setting | 3,974 psi | 280 kg/cm² 27.4MPa |
| Hydraulic cylinders | Double-acting, piston type | |
| Hydraulic cylinders: | Number of cylinders | Bore |
| Blade lift | 2 | 100 mm 3.9" |
| Blade tilt | 1 | 120 mm 4.7" |
| Blade angle | 2 | 110 mm 4.3" |
| Hydraulic oil capacity (refilling): | ||
| Power angle tilt dozer | 101 ltr | 26.7 U.S. gal |
| Control valves: | ||
| 3-spool control valve for Power Angle Tilt dozer | ||
| Positions: | ||
| Blade lift | Raise, hold, lower, and float | |
| Blade tilt | Right, hold, and left | |
| Blade angle | Right, hold, and left | |
| Additional control valve required for ripper | ||
| Positions: | ||
| Ripper lift | Raise, hold, and lower |
KOMATSU
Name : KOMATSU
Service Tel : (8621)-6841-4567
E-mail :
Web Site : https://home.komatsu/en/
Address :
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