Komatsu D155AX-8 LARGE DOZERS
Product Feature
Auto-pitch Mode*
To reduce operator effort
and increase operating
efficiency the new auto
blade pitch mode sets
blade pitch position
between digging and
dump positions while dozing.
By pressing the autopitch
switch it will toggle
the pitch position from digging to dump position with no
additional lever movements. The blade pitch control can be
set through the monitor to automatically return to the digging
position when reverse is selected.
* Requires dual tilt dozer
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, thereby decomposing NOx into non-toxic water (H2O) and nitrogen gas (N2).
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.
New Fuel Efficient Bulldozer
New D155AX-8 has achieved both high levels of productivity and fuel economy through usage of SIGMADOZER and automatic transmission with lockup torque converter.
New Tier 4 Final Engine
The Komatsu SAA6D140E-7 engine is EPA Tier 4 Final emissions certified and provides exceptional performance while reducing fuel consumption. Based on Komatsu proprietary technologies developed over many years, this new diesel engine reduces nitrogen oxides (NOx) by more than 80% when compared to Tier 4 interim levels. Through the in-house development and production of engines, electronics, and hydraulic components, Komatsu has achieved great advancements in technology, providing high levels of performance and efficiency in virtually all applications.
Ripper Auto-return
The ripper control lever is new, ergonomic and incorporates an auto-return function that will automatically raise the ripper so the operator is less fatigued at the end of the day. The function starts when travel lever is moved to reverse position.
Product Parameter
Model | |
Komatsu SAA6D140E-7** |
Type | |
4-cycle, water-cooled, direct injection |
Aspiration | |
Komatsu Variable Geometry Turbocharged, air-to-air aftercooled, cooled EGR |
Number of cylinders | |
6 |
Bore x stroke | 140 mm x 165 mm | 5.51" x 6.50" |
Piston displacement | 15.24 ltr | 930 in³ |
Governor | |
Mid-range, electronic |
Horsepower: | |
|
SAE J1995 - Gross | 268 kW | 360 HP |
ISO 9249 / SAE J1349* - Net | 264 kW | 354 HP |
Rated rpm | |
1900 rpm |
Fan drive type | |
Hydraulic |
Lubrication system: | |
|
Method | |
Gear pump, force lubrication |
Filter | |
Full-flow |
*Net horsepower at the maximum speed of radiator cooling fan: 239 kW 320 HP | |
|
**EPA Tier 4 Final emissions certified |
Control valves: | |
|
Spool control valve for SIGMADOZER, Semi-U tilt dozer and Full-U tilt dozer. | |
|
Positions: | Blade lift | Raise, hold, lower, and float |
|
Blade tilt | Right, hold, and left |
Additional control valve required for variable digging angle multi-shank ripper and giant ripper. | |
|
Positions: | Ripper lift | Raise, hold, and lower |
|
Ripper tilt | Increase, hold, and decrease |
Hydraulic cylinders | |
Double-acting, piston |
Number of cylinders | Bore | Bore |
Blade Lift / 2 | 110 mm | 4.33" |
Blade Tilt (Dual tilt) / 2 | 160 mm | 6.30" |
Blade Tilt (Single Tilt) / 1 | 160 mm | 6.30" |
Ripper Lift | 180 mm | 7.09" |
Ripper Tilt / 1 | 200 mm | 7.87" |
Hydraulic oil capacity (refill): | |
|
SIGMADOZER | 95 ltr | 25.1 U.S. gal |
Semi-U dozer | 95 ltr | 25.1 U.S. gal |
Full-U dozer | 95 ltr | 25.1 U.S. gal |
Ripper equipment (additional volume): | |
|
Multi-shank ripper | 37 ltr | 9.8 U.S. gal |
Giant ripper | 37 ltr | 9.8 U.S. gal |
Tractor weight Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment (including ROPS cab). |
632700 kg | 72,100 lb |
Operating weight Including strengthened SIGMADOZER, giant ripper, ROPS cab, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. |
40500 kg | 89,300 lb |
Ground pressure | 99.5 kPa / 1.01 kg/cm² | 14.4 psi |
Fuel tank | 625 ltr | 165 U.S. gal |
Coolant | 104 ltr | 27.5 U.S. gal |
Engine oil | 37 ltr | 9.8 U.S. gal |
Damper | 1.5 ltr | 0.4 U.S. gal |
Transmission, bevel gear, and steering system | 90 ltr |
23.8 U.S. gal |
Final drive (each side) | 31 ltr |
8.2 U.S. gal |
DEF tank | 39 ltr | 10.3 U.S. gal |
Hydraulic oil capacity |
95 ltr | 25.1 U.S. gal |
Minimum turning radius | 2.14 m | 7'0" |
Travel speed: | |
|
1st Gear forward | 3.8 km/h | 2.4 mph |
1st Gear reverse | 4.6 km/h | 2.9 mph |
2nd Gear forward | 5.6 km/h | 3.5 mph |
2nd Gear reverse | 6.8 km/h | 4.2 mph |
3rd L Gear forward | 7.5 km/h | 4.7 mph |
3rd L Gear reverse | 9.2 km/h | 5.7 mph |
3rd Gear forward | 11.6 km/h | 7.2 mph |
3rd Gear reverse | 14.0 km/h | 8.7 mph |
Number of shoes (each side) | 42 | |
Grouser height | 80 mm | 3.1" |
Shoe width (standard/maximum) | 24" / 28" | 610 mm / 710 mm |
Ground contact area | 39955 cm² | 6,193 in² |
Ground pressure (tractor only) | 80.3 kPa / 0.82 kg/cm² | 11.6 psi |
Number of track rollers (each side) | 7 | |
Number of carrier rollers (each side) | 2 |