| Rated rpm | 2000 rpm |
|---|---|
| Operating Weight | 113,600 lb 51530 kg |
For improved rear visibility during reverse operations, the operator can adjust the seat 15° to the right. The transmission and steering controls move with the seat for optimum operator comfort. The travel control console also has adjustment fore and aft, and height. The armrest is independently adjustable up and down, providing optimum operation posture for all operators.
The Hydrostatic Steering System (HSS) is powered by an independent hydraulic pump with engine power transmitted to both tracks without power interruption on the inside track. When the machine turns, the outside track moves faster and the inside slower, for smooth, powerful turns. Counter-rotation is available for minimum turning radius providing excellent maneuverability. Shock-free steering reduces machine vibration and increases operator comfort.
Preset travel speed selection function is standard equipment, enabling the operator to select a combination of forward/reverse gear shifts from three preset patterns; F1-R1, F1-R2 and F2-R2 by using the UP/DOWN switch. When the preset pattern is selected and the travel control is moved into forward or reverse, the machine travels in the preset gear range automatically. This function reduces manual gear shifting frequency during machine operation, enabling the operator to focus on directional and hydraulic control. Preset travel speed selection is especially helpful when used in combination with the auto-downshift function and reduces cycle times during repeated round trip operations.
In the lockup configuration, the system automatically engages the torque converter lockup clutch with all the engine power transmitted directly to the transmission, increasing ground speed and thus achieving efficiencies equal to a direct drive. The result is efficient use of engine power, less fuel consumption, and faster cycle times.
SIGMADOZER™
Based on a completely new digging theory, SIGMADOZER™ dramatically improves dozing performance and increases productivity. A new frontal design concept adopted for digging and rolling up material at the center of the blade increases material holding capacity, simultaneously reducing side spillage. Reduced digging resistance produces smoother flow of material, enabling the dozing of larger quantities of material with less power. In addition, adoption of a new blade linkage system holds the blade closer to the tractor for improved visibility, enhanced digging force, and reduced lateral sway of the blade.
• K-Bogies oscillate with two fulcrums, and track roller vertical travel is greatly increased. Impact load on all undercarriage components has been reduced and durability of components is improved since track rollers are always in contact with track links.
• Undercarriage life is improved due to better control of track chain alignment with track rollers.
• Riding comfort is improved by reducing vibration and shock when traveling over rough terrain.
The D275AX-5’s cab mount uses a new cab damper which provides excellent shock and vibration absorption capacity with its long stroke. The cab damper mounts combined with the new K-Bogie undercarriage, soften shocks and vibration, while traveling over adverse conditions, which conventional mounting systems are unable to absorb. The cab damper spring isolates the cab from the machine chassis, suppressing vibration, and providing a quiet, comfortable operating environment.
| Model | Komatsu SAA6D140E-5 | |
| Type | 4-cycle, water-cooled, direct injection | |
| Aspiration | Turbocharged, air-to-air aftercooled, cooled EGR | |
| No. of cylinders | 6 | |
| Bore x stroke | 5.51" x 6.50" | 140 mm x 165 mm |
| Piston displacement | 930 in³ | 15.24 ltr |
| Governor | All-speed, electronic | |
| Horsepower: | ||
| SAE J1995 - Gross | 452 HP | 337 kW |
| ISO 9249 / SAE J1349 - Net | 449 HP | 335 kW |
| Hydraulic fan at maximum speed - Net | 410 HP | 306 kW |
| Rated rpm | 2000 rpm | |
| Fan drive type | Hydraulic | |
| Lubrication system: | ||
| Method | Gear pump, force lubrication | |
| Filter | Full-flow |
Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically-actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch help prevent accidental starts.
| Gear | Forward | Reverse |
| 1st | 2.2 mph / 3.6 km/h | 2.9 mph / 4.7 km/h |
| 2nd | 4.2 mph / 6.7 km/h | 5.4 mph / 8.7 km/h |
| 3rd | 7.0 mph / 11.2 km/h | 9.3 mph / 14.9 km/h |
Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket rims are bolt-on for easy replacement.
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 the left to make a left 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 | 12'10 | 3.9 m |
| Suspension | Oscillating equalizer bar and pivot shaft | |
| Track roller frame | Cylindrical, high-tensile-strength steel construction | |
| Rollers and idlers | Lubricated track rollers | |
| K-Bogie undercarriage | Lubricated track rollers are resiliently mounted to the roller frame with a series of K-Bogies whose oscillating motion is cushioned by rubber pads. | |
| Extreme service track shoes | Lubricated tracks. Unique seals help prevent entry of foreign abrasive material into pin-to-bushing clearances to provide extended service life. Track tension is easily adjusted with a grease gun. | |
| Number of shoes (each side) | 39 | |
| Grouser height: | ||
| Single grouser | 3.5'' | 88 mm |
| Shoe width (standard) | 24'' | 610 mm |
| Ground contact area | 6,580 in² | 42456 cm² |
| Ground pressure (tractor only) | 12.7 psi | 87.3 kPa / 0.89 kg/cm² |
| No. of track rollers | 7 | |
| No. of carrier rollers | 2 | |
| Extreme service shoes | 24" | 610 mm |
| Additional weight | 0 lb | 0 kg |
| Ground contact area | 6,580 in² | 42456 cm² |
| SIGMADOZER™ Strengthened Dual tilt Ground pressure** | 17.2 psi | 119 kPa / 1.21 kg/cm² |
| Semi-U tilt dozer Ground pressure** | 16.6 psi | 115 kPa / 1.17 kg/cm² |
| Extreme service shoes | 28'' | 710 mm |
| Additional weight | 1,260 lb | 570 kg |
| Ground contact area | 7,659 in² | 49416 cm² |
| SIGMADOZER™ Strengthened Dual tilt Ground pressure** | 15.0 psi | 103 kPa / 1.05 kg/cm² |
| Semi-U tilt dozer Ground pressure** | 14.5 psi | 100 kPa / 1.02 kg/cm² |
| Extreme service shoes | 30'' | 760 mm |
| Additional weight | 1,870 lb | 850 kg |
| Ground contact area | 8,199 in² | 52896 cm² |
| SIGMADOZER™ Strengthened Dual tilt Ground pressure** | 14.1 psi | 97 kPa / 0.99 kg/cm² |
| Semi-U tilt dozer Ground pressure** | 13.7 psi | 94 kPa / 0.96 kg/cm² |
| ** Ground pressure based on tractor, cab, ROPS, operator, giant ripper, standard equipment, and shoe and blade shown in the chart. |
| Fuel tank | 222 U.S. gal | 840 ltr |
| Coolant | 26.4 U.S. gal | 100 ltr |
| Engine | 13.7 U.S. gal | 52.0 ltr |
| Torque converter, transmission, bevel gear, and steering system | 23.8 U.S. gal | 90 ltr |
| Final drive (each side) | 10.6 U.S. gal | 40 ltr |
| Tractor weight - Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. | 83,070 lb | 37680 kg |
| Operating weight - Including Strengthened Dual tilt SIGMADOZER™, giant ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. | 113,600 lb | 51530 kg |
| Ground pressure | 17.2 psi | 119 kPa / 1.21 kg/cm² |
Closed-center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
| Hydraulic control units: | All spool valves externally mounted beside the hydraulic tank. Piston type hydraulic pump with capacity (discharge flow) of 230 ltr/min / 60.8 U.S. gal/min at rated engine rpm. | |
| Relief valve setting | 3,980 psi | 27.5 MPa / 280 kg/cm² |
| Control valves: | Spool control valves for SIGMADOZER™, Semi-U tilt and Full-U tilt dozer | |
| Positions: | ||
| Blade lift | Raise, hold, lower, and float. | |
| Blade tilt | Right, hold, and left. | |
| Note: | 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. | |
| Hydraulic cylinders/ Number of cylinders: | Bore | Bore |
| Blade lift / 2 | 4.72'' | 120 mm |
| Blade tilt / 1(Single tilt), 2(Dual tilt) | 7.09'' | 180 mm |
| Ripper lift / 2 | 7.09'' | 180 mm |
| Ripper tilt / 2 | 6.30'' | 160 mm |
| Hydraulic oil capacity (refill): | ||
| SIGMADOZER™, Semi-U dozer, or U dozer | 34.3 U.S. gal | 130 ltr |
| Ripper equipment (additional volume): | ||
| Giant ripper | 10.0 U.S. gal | 38 ltr |
| Multi-shank ripper | 10.0 U.S. gal | 38 ltr |
KOMATSU
Name : KOMATSU
Service Tel : (8621)-6841-4567
E-mail :
Web Site : https://home.komatsu/en/
Address :
Copyright Notice 2002-2024 global-ce.com Construction Machinery Online. All rights reserved.
Address: Room 901, Building C, Ruipu Mansion, Hongjunying South Road No.15, Chaoyang District, Beijing.100107 P.R.China
