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PC1250SP-11
High-capacity excavation.
- Horsepower: 758 HP @ 1,800 rpm
- Operating weight: 259,960 - 265,900 lbs.
- Bucket capacity: 4.1 - 11.9 yd³
Specifications
Engine
| Model | Komatsu SAA6D170E-7* |
| Type | Water-cooled, 4-cycle, direct injection |
| Aspiration | Turbocharged, aftercooled, cooled, EGR |
| Number of cylinders | 6 |
| Bore | 6.69 in |
| Stroke | 6.69 in |
| Piston displacement | 1,413 in³ |
| Governor | All-speed, electronic |
| Horsepower: | |
| SAE J1995 - Gross | 775 HP |
| ISO 9249 / SAE J1349 - Net | 758 HP |
| Rated rpm | 1,800 rpm |
| Hydraulic fan at maximum speed - Net | 696 HP |
| Governor | All-speed control, electronic |
| Fan drive method for radiator cooling | Hydraulic |
*EPA Tier 4 Final emissions certified
Hydraulics
| Type | Open-center load sensing system, 1 selectable working mode |
| Main pump: | |
| Type | Variable capacity piston |
| Maximum flow implement and travel | 2 x 130.5 gpm |
| Maximum flow swing | 1 x 158.5 gpm |
| Sub-pump for control circuit | Gear type |
| Fan drive pump | Variable-capacity piston type |
| Hydraulic motors: | Gear pump |
| Travel | 2 x axial piston motors with parking brake |
| Swing | 2 x axial piston motors with swing holding brake |
| Relief valve setting: | |
| Implement circuits | 4,550 psi |
| Travel circuit | 4,980 psi |
| Swing circuit | 4,267 psi |
| Pilot circuit | 455 psi |
| Hydraulic cylinders: | |
| Cylinder / Number of cylinders | bore x stroke x rod diameter |
| Boom / 2 | 8.9 x 94.1 x 6.3 in |
| Arm / 1 | 9.8 x 95.9 x 6.7 in |
| Bucket: | |
| Standard / 2 | 6.3 x 71.8 x 4.5 in |
| SP / 2 | 6.3 x 76.8 x 4.5 in |
Drives and Brakes
| Steering control | Two levers with pedals |
| Drive method | Fully hydrostatic |
| Travel motor | Axial piston motor, in-shoe design |
| Reduction system | Planetary triple reduction |
| Maximum drawbar pull | 154,320 lbf. |
| Gradeability | 70%, 35° |
| Maximum travel speed: | |
| High | 2.0 mph |
| Low | 1.5 mph |
| Service brake | Hydraulic lock |
| Parking brake | Oil disc brake |
Swing System
| Drive method | 2 x hydraulic motors |
| Swing reduction | Planetary gear |
| Swing circle lubrication | Grease-bathed |
| Service brake | Oil disc brake |
| Holding brake/swing lock | Mechanical disc brake |
| Swing speed | 5.8 rpm |
| Swing torque | 299,524 lbs.-ft. |
Undercarriage
| Center frame | H-leg frame |
| Track frame | Box-section |
| Track type | Sealed |
| Track adjuster | Hydraulic |
| Number of carrier rollers (each side) | 3 |
| Number of shoes (each side): | |
| Standard, SP | 48 |
| Long undercarriage | 55 |
| Number of track rollers (each side): | |
| Standard, SP | 8 |
| Long undercarriage | 10 |
Coolant and Lubricant Capacity (refilling)
| Fuel tank | 359.3 US gal |
| Coolant | 37.5 US gal |
| Engine | 22.7 US gal |
| Final drive, each side | 5.5 US gal |
| Swing drive | 2 x 5.3 US gal |
| Hydraulic tank | 177.0 US gal |
Sound Performance
| Exterior – ISO 6395 | 109.9 dB(A) |
| Operator – ISO 6396 | 68.5 dB(A) |
Operating Weight (Approximate)
Mass Excavation:
PC1250SP-11: Operating weight, including 25 ft. 7 in boom, 11 ft. 2 in arm, 8.8 yd³ bucket, track roller guard, operator, lubricant, coolant, full fuel tank, and standard equipment.
| PC1250SP-11 | ||
| Double-Grouser Shoes | Operating Weight | Ground Pressure (ISO 16754) |
| 28 in | 259,960 lbs. | 21.85 psi |
| 39.4 in | 265,900 lbs. | 15.64 psi |
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