Specifications :
Engine
| Model | Komatsu SAA6D114E-5* | |
| Type | Water-cooled, 4-cycle, direct injection | |
| Aspiration | Turbocharged, aftercooled, cooled EGR | |
| Number of cylinders | 6 | |
| Bore | 4.49" | 114 mm |
| Stroke | 5.69" | 144.5 mm |
| Piston displacement | 540 in³ | 8.85 ltr |
| Horsepower | ||
| SAE J1995 : Gross | 271 HP | 202 kW |
| ISO 9249/SAE J1349 : Net | 257 HP | 192 kW |
| Rated rpm | 1950 rpm | |
| Fan drive type | Mechanical | |
| Governor | All-speed control, electronic. | |
| *EPA Tier 4 Interim and EU Stage 3B emissions certified. |
Hydraulic System
Type . . HydrauMind (Hydraulic Mechanical Intelligence New
Design) system, closed-center system with load
sensing valves and pressure compensated valves
| Number of selectable working modes | 6 | |
| Main pump: | ||
| Type | Variable displacement piston type | |
| Pumps for | Boom, arm, bucket, swing, and travel circuits | |
| Maximum flow | 141 U.S. gal/min | 535 ltr/min |
| Supply for control circuit | Self-reducing valve | |
| Hydraulic motors: | ||
| Travel | 2 x axial piston motor with parking brake | |
| Swing | 1 x axial piston motor with swing holding brake | |
| Relief valve setting: | ||
| Implement circuits | 5,400 psi | 380 kgf/cm²/ 37.3 MPa |
| Travel circuit | 5,400 psi | 380 kgf/cm² / 37.3 MPa |
| Swing circuit | 4,050 psi | 285 kgf/cm²/ 27.9 MPa |
| Pilot circuit | 470 psi | 33 kgf/cm² / 3.2 MPa |
| Hydraulic cylinders: | ||
| Number of cylinders | Bore x Stroke x Rod Diameter | Bore x Stroke x Rod Diameter |
| Boom / 2 | 5.5" x 58.3" x 3.9" | 140 mm x 1480 mm x 100 mm |
| Arm / 1 | 6.3" x 71.9" x 4.3" | 160 mm x 1825 mm x 110 mm |
| Bucket / 1 - for 3.2 m 10'5" and 4.0 m 13'2" Arms | 5.5" x 50.6" x 3.9" | 140 mm x 1285 mm x 100 mm |
| Bucket / 1 - for 2.54 m 8'4" Arm | 5.9" x 50.6" x 4.3" | 150 mm x 1285 mm x 110 mm |
Swing System
| Drive method | Hydrostatic | |
| Swing reduction | Planetary gear | |
| Swing circle lubrication | Grease-bathed | |
| Service brake | Hydraulic lock | |
| Holding brake/Swing lock | Mechanical disc brake | |
| Swing speed | 9.5 rpm | |
| Swing torque | 82,313 ft. lbs. | 11386 kg•m |
Drives and Brakes
| Steering control | Two levers with pedals | |
| Drive method | Hydrostatic | |
| Maximum drawbar pull | 66,191 lb | 290 kN / 29570 kgf |
| Gradeability | 35° | 70% |
| Maximum travel speed: (Auto-Shift) | ||
| High | 3.4 mph | 5.5 km/h |
| Mid | 2.8 mph | 4.5 km/h |
| Low | 2.0 mph | 3.2 km/h |
| Service brake | Hydraulic lock | |
| Parking brake | Mechanical disc brake |
Undercarriage
| Center frame | X-frame | |
| Track frame | Box-section | |
| Track type | Sealed | |
| Track adjuster | Hydraulic | |
| Number of shoes | 48 each side | |
| Number of carrier rollers | 2 each side | |
| Number of track rollers | 8 each side |
Coolant and Lubricant Capity (refilling)
| Fuel tank | 159.8 U.S. gal | 605 ltr |
| Coolant | 9.7 U.S. gal | 37 ltr |
| Engine | 9.2 U.S. gal | 35.0 ltr |
| Final drive, each side | 2.4 U.S. gal | 9.0 ltr |
| Swing drive | 3.6 U.S. gal | 13.7 ltr |
| Hydraulic tank | 49.7 U.S. gal | 188 ltr |
| Hydraulic system | 96.4 U.S. gal | 365 ltr |
Operating Weight (Aproximate)
Operating weight includes 6500 mm / 21'3" one-piece HD
boom, 3185 mm / 10'5" arm, SAE heaped 1.96 m³ / 2.56 yd³
bucket, rated capacity of lubricants, coolant, full fuel tank,
operator, and standard equipment.
| Shoes | 28" | 700 mm |
| Operating Weight | 78,255 lb | 35496 kg |
| Ground Pressure | 8.31 psi | 0.59 kg/cm² |
| Shoes | 31.5'' | 800 mm |
| Operating Weight: | 79,093 lb | 35876 kg |
| Ground Pressure | 7.40 psi | 0.52 kg/cm² |
| Shoes | 33.5" | 850 mm |
| Operating Weight: | 79,930 lb | 36255 kg |
| Ground Pressure | 7.00 psi | 0.50 kg/cm² |
| Component Weights | ||
| Arm including bucket cylinder and linkage: | ||
| 3185 mm / 10'5" arm assembly | 3,882 lb | 1761 kg |
| 4020 mm / 13'2" arm assembly | 4,383 lb | 1988 kg |
| One piece HD boom including arm cylinder: | ||
| 6500 mm / 21'3" boom assembly | 6,912 lb | 3135 kg |
| Boom cylinders x 2 | 571 lb | 259 kg |
| Counterweight | 15,631 lb | 7090 kg |
| 1.96 m³ / 2.56 yd³ bucket - 54" width | 3,425 lb | 1554 kg |
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