For pushing massive loads on soft ground, the D155PX-8 LGP (low ground pressure). An 8-roller undercarriage with track shoe size up to 38” (965 mm) wide for outstanding traction and balance with exceptional floatation. Optional extended wear life undercarriage with 34” wide PLUS (Parallel Link Undercarriage System) rotating bushing track shoes available.
| 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 x 165 mm |
| Piston displacement | 15.24 L |
| Governor | Mid-range, electronic |
| Horsepower: | |
| SAE J1995 - Gross | 268 kW |
| ISO 9249 / SAE J1349* - Net | 264 kW |
| 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: 239 kW | |
| **EPA Tier 4 Final emissions certified |
| 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 |
Standard rear Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. High flow hydraulics for towing winch is standard. Base machine is equipped with dual tilt and pitch dozer hydraulics for semi-u blade. Angle blade is equipped with dual tilt, no pitch.
Hydraulic control unit:
All spool control valves externally mounted beside the hydraulic tank.
Variable piston pump with capacity (discharge flow) of 325 L/min for steering and 180 L/min for implement at rated engine rpm.
Relief valve setting
. . . for implement 27.5 MPa 280 kg/cm²
. . . for steering 38.2 MPa 390 kg/cm²
| 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 | |
| Hydraulic cylinders | Double-acting, piston | |
| Number of cylinders | Bore | |
| Blade Lift / 2 | 110 mm | |
| Blade Tilt (Dual tilt) / 2 | 160 mm | |
| Blade Tilt (Single Tilt) / 1 | 160 mm | |
| Hydraulic oil capacity (refill): | ||
| Angle dozer | 95 L | |
| Semi-U dozer | 95 L |
Standard rear Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. High flow hydraulics for towing winch is standard. Base machine is equipped with dual tilt and pitch dozer hydraulics for semi-u blade. Angle blade is equipped with dual tilt, no pitch.
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
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| 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 | |
| Hydraulic cylinders | Double-acting, piston | |
| Number of cylinders | Bore | |
| Blade Lift / 2 | 4.33 in | |
| Blade Tilt (Dual tilt) / 2 | 6.30 in | |
| Blade Tilt (Single Tilt) / 1 | 6.30 in | |
| Hydraulic oil capacity (refill): | ||
| Angle dozer | 25.1 US gal | |
| Semi-U dozer | 25.1 US gal |
| Tractor weight | 38 600 kg |
| Operating weight | 42 100 kg |
| Ground pressure | 52.9 kPa |
| Tractor weight | 85,100 lbs. |
| Operating weight | 92,820 lbs. |
| Ground pressure | 7.67 psi |
| Fuel tank | 625 L |
| Coolant | 104 L |
| Engine oil | 37 L |
| Damper | 1.5 L |
| Transmission, bevel gear, and steering system | 90 L |
| Final drive (each side) | 31 L |
| DEF tank | 39 L |
| Hydraulic oil capacity | 95 L |
| 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 |
| Angle Blade | |
| Capacity | 7.3 m3 |
| Width at cutting edge | 5 791 mm |
| Height | 1 353 mm |
| Tilt, max angle | 9.5 deg |
| Tilt, max dimension | 965 mm |
| Weight | 6 670 kg |
| Semi-u blade | 39 L |
| Capacity | 9.8 - 12.0 m3 |
| Width over end bits | 4 598 mm |
| Weight ‘AR” spec / non ‘AR” | 5 775 kg / 5 055 kg |
| Angle Blade | |
| Capacity | 9.6 yd3 |
| Width at cutting edge | 19 ft. 0 in |
| Height | 4 ft. 5 in |
| Tilt, max angle | 9.5 degrees |
| Tilt, max dimension | 38 in |
| Weight | 14700 lbs. |
| Semi-u blade | 10.3 US gal |
| Capacity | 12.9 - 15.7 yd3 |
| Width over end bits | 15 ft. 1 in |
| Weight ‘AR” spec / non ‘AR” | 12732 lbs. / 11,114 lbs. |
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 | 3.8 kph |
| 1st Gear reverse | 4.6 kph |
| 2nd Gear forward | 5.6 kph |
| 2nd Gear reverse | 6.8 kph |
| 3rd L Gear forward | 7.5 kph |
| 3rd L Gear reverse | 9.2 kph |
| 3rd Gear forward | 11.6 kph |
| 3rd Gear reverse | 14.0 kph |
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 |
Suspension: Oscillation-type with equalizer bar and forward mounted pivot shafts
Track roller frame: Monocoque, high-tensilestrength steel construction
Fixed mounted 8-roller undercarriage
Lubricated track rollers are rigid mounted to the track frame.
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) | 45 |
| Grouser height | 80 mm |
| Shoe width (standard/maximum) | 965 mm |
| Ground contact area | 78 037 cm² |
| Ground pressure (tractor only) | 52.9 kPa |
| Number of track rollers (each side) | 8 |
| Number of carrier rollers (each side) | 2 |
Suspension: Oscillation-type with equalizer bar and forward mounted pivot shafts
Track roller frame: Monocoque, high-tensilestrength steel construction
Fixed mounted 8-roller undercarriage
Lubricated track rollers are rigid mounted to the track frame.
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) | 45 |
| Grouser height | 3.1 in |
| Shoe width (standard/maximum) | 38 in |
| Ground contact area | 12,096 in² |
| Ground pressure (tractor only) | 7.67 psi |
| Number of track rollers (each side) | 8 |
| Number of carrier rollers (each side) | 2 |
Blades
Shoes
Rear Attachment
Abrasion Resistant Package
Blades
Shoes
Rear Attachment
Abrasion Resistant Package