KOMATSU D155AXi-8
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2024
Komastu
D155AXi-8
New
Ontario
A workhorse for your fleet
Your big jobs demand a big dozer. 350+ horsepower, massive blade capacity with semi-U and full U blades, automatic lockup torque converter, and low drive K-bogie suspended undercarriage designed for maximum traction and smooth ride when dozing or ripping.
- Get new operators up to speed quickly
- Go from mass ex to finished grading faster than ever
- Fully integrate 3D design data into your machines
- Empower operators to work efficiently, pass after pass
Engine
| 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 | 5.51 x 6.50 in |
| Piston displacement | 930 in³ |
| Governor | Mid-range, electronic |
| Horsepower: | |
| SAE J1995 - Gross | 360 HP |
| ISO 9249 / SAE J1349* - Net | 354 HP |
| Rated rpm | 1,900 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: 320 HP | |
| **EPA Tier 4 Final emissions certified |
TORQFLOW Transmission
Komatsu's automatic TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter with lockup clutch, and a planetary gear, multipledisc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Equipped with gearshift lock lever and neutral safety switch.
| Travel speed: | |
| 1st Gear forward | 2.4 mph |
| 1st Gear reverse | 2.9 mph |
| 2nd Gear forward | 3.5 mph |
| 2nd Gear reverse | 4.2 mph |
| 3rd L Gear forward | 4.7 mph |
| 3rd L Gear reverse | 5.7 mph |
| 3rd Gear forward | 7.2 mph |
| 3rd Gear reverse | 8.7 mph |
Final drive
Steering system
Palm Command Control System (PCCS) lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to left to make a left turn. Tilt it to the right for a right turn.
Hydrostatic Steering System (HSS) is powered by steering planetary units and an independent hydraulic pump and motor. Counterrotation turns are also available. Wet, multiple-disc, pedal-controlled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.
| Minimum turning radius | 7 ft. 0 in |
Undercarriage
Suspension: Oscillation-type with equalizer bar and forward mounted pivot shafts
Track roller frame: Monocoque, high-tensilestrength steel construction
K-Bogie undercarriage
Lubricated track rollers are resiliently mounted the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads.
Track shoes
Lubricated tracks. Unique dust seals for preventing entry of foreign abrasives into pin-to-bushing clearance for extended service. Track tension easily adjusted with grease gun.
| Number of shoes (each side) | 42 |
| Grouser height | 3.1 in |
| Shoe width (standard/maximum) | 24 in / 28 in |
| Ground contact area | 6,193 in² |
| Ground pressure (tractor only) | 11.6 psi |
| Number of track rollers (each side) | 7 |
| Number of carrier rollers (each side) | 2 |
Service refill capacities
| Fuel tank | 165 US gal |
| Coolant | 27.5 US gal |
| Engine oil | 9.8 US gal |
| Damper | 0.4 US gal |
| Transmission, bevel gear, and steering system | 23.8 US gal |
| Final drive (each side) | 8.2 US gal |
| DEF tank | 10.3 US gal |
| Hydraulic oil capacity | 25.1 US gal |
Operating weight (approximate)
Tractor weight: 72,223 lbs.
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment (including ROPS cab).
Operating weight: 90,610 lbs.
Including strengthened SIGMADOZER, giant ripper, ROPS cab, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.
Ground pressure: 14.6 psi
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 beside the hydraulic tank.
Variable piston pump with capacity (discharge flow) of 85.9 US gal for steering and 47.6 US gal for implement at rated engine rpm.
Relief valve setting
- for implement 3,980 psi
- for steering 5,550 psi
Control valves:
Spool control valve for SIGMADOZER and Semi-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 | |
| Blade Lift | 2 | 4.33 in |
| Blade Tilt | 1 | 6.30 in |
| Ripper Lift | 1 | 7.09 in |
| Ripper Tilt | 1 | 7.87 in |
Hydraulic oil capacity (refill):
- SIGMADOZER: 25.1 US gal
- Semi-U tilt dozer: 25.1 US gal
Ripper equipment (additional volume):
- Multi-shank ripper: 9.8 US gal
- Giant ripper: 9.8 US gal
- Air cleaner, double element with dust indicator
- Alternator, 140 ampere/24V
- Backup alarm
- Batteries, 200 Ah/2 x 12V
- Battery disconnect switch
- Blade lift cylinders with double dust seal
- Color monitor, LCD
- Decelerator pedal
- Engine hood
- Engine idle auto shutdown with adjustable timer
- Engine intake centrifugal precleaner
- Engine, gull-wing side covers
- Engine shutdown secondary switch
- Exhaust pipe with raincap
- Fast fuel provision
- Fenders
- Front pull hook
- Fuel pre-filter and primary filter
- Grid heater starting aid in cold weather
- High mount foot rests
- Horn, warning
- Hydraulic driven radiator cooling fan with manual reverse clean mode
- Hydraulics for dual tilt and pitch dozer
- Hydraulics for ripper VGR/MSR
- KOMTRAX® Level 5
- K-bogie undercarriage
- Komatsu Diesel Particulate Filter (KDPF)
- Komatsu Variable Geometry Turbocharger (KVGT)
- Komatsu Selective Catalytic Reduction (SCR)
- Locks, filler caps and covers
- Oil pressure check ports for power train
- PM service connector
- Radiator mask, double door, heavy-duty, hinged, perforated
- Radiator reserve tank
- Rear cover
- ROPS cab (3,131 lb)**
- Air conditioner/heater/defroster
--Pressurized
--Condenser remote mounted - Cab accessories
- Work lights
--2 front, hood mounted
--2 front, cab mounted
--2 rear, fender mounter
--2 rear, cab mounted
--1 rear, for ripper point
- Air conditioner/heater/defroster
- Seat, air suspension, fabric, heated, low back, rotates 12.5° to right, headrest
- Seat belt, 3", retractable
- Seat belt indicator
- Sealed electrical connectors
- Starting motor, 24V
- Steering system: Hydrostatic Steering System (HSS)
- Torque converter with auto lock-up
- Track roller guards, end sections
- Track shoe assembly
- Sealed and lubricated
24" extreme service shoes
- Sealed and lubricated
- Transmission with auto/manual shift modes
- Underguards, heavy duty
- Hinged belly pans
- Water separator, fuel
- Wide core cooling package, 6 fins per inch spacing
Shoes, single grouser - Additional weight:
- 26" extreme service: +530 lb
- 28" moderate service: No additional
- 24" PLUS extreme service: +1,254 lb
- 26" PLUS extreme service: +1,806 lb
- 28" PLUS extreme service: +2,269 lb
Shoes, single grouser - Ground contact area:
- 26" extreme service: 6,700 in2
- 28" moderate service: 7,208 in2
- 24" PLUS extreme service: 6,193 in2
- 26" PLUS extreme service: 6,700 in2
- 28" PLUS extreme service: 7,208 in2
Variable Multi-Shank Ripper:
- Additional weight (including hydraulic control unit): 8,290 lb
- Beam length: 7'7"
- Hydraulically-controlled parallelogram-type ripper with three shanks. Digging angle infinitely adjustable. Standard digging angle: 49°
- Maximum digging depth: 2'11"
- Maximum lift above ground: 3'1"
Variable Giant Ripper:
- Additional weight (including hydraulic control unit): 5,380 lb
- Beam length: 4'7"
- Hydraulically-controlled parallelogram-type ripper with one shank. Digging angle infinitely adjustable. Standard digging angle: 49°
- Maximum digging depth: 4'1"
- Maximum lift above ground: 3'1"
Other:
- HD Counterweight 9-plate with rigid drawbar, 7,860 lb
Dozer Equipment:
- SIGMADOZER®
- Semi-U