Specifications :
Engine
| Model | Komatsu SAA4D107E-1* | |
| Type | Water cooled, 4-cycle, direct injection | |
| Aspiration | Turbocharged, and air-to-air aftercooled | |
| Number of cylinders | 4 | |
| Bore | 4.21" | 107 mm |
| Stroke | 4.88" | 124 mm |
| Piston displacement | 272 in³ | 4.46 ltr |
| Horsepower: | ||
| Gross (SAEJ1995) @ 2200 rpm | 121 HP | 90 kW |
| Net (ISO 9249/SAEJ1349) @ 2200 rpm | 115 HP | 86 kW |
| Governor | All speed control, electronic | |
| Lubrication system : | ||
| Method | Gear pump, force-lubrication | |
| Filter | Full-flow | |
| Air cleaner | Dry type with double elements and auto dust evacuator, plus dust indicator | |
| *EPA Tier 3 and EU Stage 3A 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 | 5 | |
| Main pump: | ||
| Type | Variable displacement piston types | |
| Pumps for | Boom, arm, bucket, swing, and travel circuits | |
| Maximum flow | 82.4 U.S. gal/min | 312 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 | 4,195 psi | 295 kgf/cm² / 28.4 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 | 4.3" x 46.3" x 3.0" | 110 mm x 1175 mm x 75 mm |
| Arm / 1 | 4.7" x 52.8" x 3.3" | 120 mm x 1342 mm x 85 mm |
| Bucket / 1 | 4.1" x 40.4" x 2.8" | 105 mm x 1027 mm x 70 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 | 12.0 rpm | |
| Swing torque | 31,314 ft lbs | 4331 kg•m |
Drives and Brakes
| Steering control | Two levers with pedals | |
| Drive method | Hydrostatic | |
| Maximum drawbar pull | 35,160 lb | 15950 kgf / 156 kN |
| Gradeability | 35° | 70% |
| Maximum travel speed: | ||
| High | 3.4 mph | 5.5 km/h |
| Low (Auto-Shift) | 2.1 mph | 3.4 km/h |
| Service brake | Hydraulic lock | |
| Parking brake | Mechanical disc |
Undercarriage
| Center frame | X-leg | |
| Track frame | Box-section | |
| Track type | Sealed | |
| Track adjuster | Hydraulic | |
| Number of shoes (each side) | 44 | |
| Number of carrier rollers (each side) | 2 | |
| Number of track rollers (each side) | 7 |
Coolant and Lubricant Capity (refilling)
| Fuel tank | 74 U.S. gal | 280 ltr |
| Coolant | 4.9 U.S. gal | 18.5 ltr |
| Engine | 4.2 U.S. galr | 16 ltr |
| Final drive, each side | 0.9 U.S. gal | 3.3 ltr |
| Swing drive | 1.2 U.S. gal | 4.5 ltr |
| Hydraulic tank | 32.0 U.S. gal | 121 ltr |
Operating Weight (Aproximate)
Operating weight including 5150 mm / 16'11" one-piece boom,
2610 mm / 8'7" arm, SAE heaped 0.65 m³ / 0.85 yd³ backhoe bucket,
rated capacity of lubricants, coolant, full fuel tank, operator, and
standard equipment.
| Shoes: | Operating Weight: | Ground Pressure: |
| 24" 600 mm | 37,260 lb 16900 kg | 5.84 psi 0.41 kgf/cm² / 40.3 kPa |
| 28" 700 mm | 37,740 lb 17120 kg | 5.08 psi 0.36 kgf/cm² / 35.0 kPa |
| 31.5" 800 mm | 38,400 lb 17420 kg | 4.49 psi 0.32 kgf/cm² / 31.0 kPa |
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