• 250,154 - 254,000 lbs Operating Weight
  • 672 @1800 rpm Horsepower
  • 4.4 yd³ Bucket Capacity


The PC1250LC-8 is designed to balance the power needed to dig hard dense material like coral while also being able to load out mass quantities of material like topsoil. Power, economy, heavy lift and swing priority work modes allow the operator to operate his machine in the most efficient manner for his current work. Two boom mode settings and shockless boom control make operation smoother and more productive.


High-Pressure In-line Filtration

The PC1250LC-8 has the most extensive filtration system available, providing in-line filters as standard equipment. An in-line high pressure filter in the outlet port of each main hydraulic pump reduces failures caused by contamination.

Low Vibration with Cab Damper Mounting

The PC1250LC-8 uses a new, improved cab damper mount system that incorporates longer stroke and the addition of a spring. The new cab damper mounting, combined with a strengthened left and right side deck, aids vibration reduction at the operator’s seat.
Vibration at the floor is reduced from 120 dB (VL) to 115 dB (VL).

Wide Catwalk Large Steps and Handrails

Easier, safer operator cab access and maintenance checks.

High-Quality EMMS Self-diagnostic System

• Abnormality Checking Function

If an abnormality should occur, the monitoring system checks whether hydraulic pressures, solenoid ON/OFF status, engine speed, electrical connections, etc. are within normal operating range.

• Maintenance History Memory Function

Maintenance records such as replacement of engine oil, hydraulic oil, filters, can be stored. Operator is warned when service is due.

• Trouble Data Memory Function

Trouble data is stored to serve as reference for future troubleshooting. Error codes are displayed to aid in service diagnosis.



Model Komatsu SAA6D170E-5
Type 4-cycle, water-cooled, direct injection
Aspiration Turbocharged, aftercooled, cooled EGR
Number of cylinders 6
Bore 6.69" 170 mm
Stroke 6.69" 170 mm
Piston displacement 1,413 in³ 23.15 ltr
Governor All-speed, electronic
SAE J1995 - Gross 688 HP 514 kW
ISO 9249 / SAE J1349 - Net 672 HP 502 kW
Hydraulic fan at maximum speed - Net 620 HP 463 kW
Rated rpm 1800 rpm
Fan drive type Hydraulic, variable speed, reversible
EPA Tier 3 and EU stage 3A emission certified.

Hydraulic System

Type Open-center load sensing system
Number of selectable working modes 2
Main pump:
Type Variable capacity piston pumps
Pumps for Boom, arm, bucket, swing, and travel circuits
Maximum flow:
For implement and travel 2 x 130.5 U.S. gpm 2 x 494 ltr/min
For swing 1 x 158.5 U.S. gpm 1 x 600 ltr/min
Sub-pump for control circuit Gear pump
Hydraulic motors:
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 31.4 MPa
320 kg/cm²
Travel circuit 4,980 psi 34.3 MPa
350 kg/cm²
Swing circuit 3,910 psi 27.0 MPa
275 kg/cm²
Pilot circuit 430 psi 2.9 MPa
30 kg/cm²
Hydraulic cylinders:
Cylinder / Number of cylinders Bore x Stroke Bore x Stroke
Boom / 2 8.9" x 94.1" 225 mm x 2390 mm
Arm / 1 9.8" x 95.9" 250 mm x 2435 mm
Std / 2 6.3" x 71.8" 160 mm x 1825 mm
SP / 2 6.3" x 76.8" 160 mm x 1950 mm

Swing System

Driven by2 x Hydraulic motor
Swing reductionPlanetary gear
Swing circle lubricationGrease-bathed
Swing lockOil disc brake
Swing speed5.5 rpm

Drives and Brakes

Steering control Two levers with pedals
Drive method Fully hydrostatic
Travel motor Axial piston motor, in-shoe design
Reduction system Planetary double reduction
Maximum drawbar pull 154,320 lb 686 kN
70000 kg
Gradeability 70%
Maximum travel speed:
High 2.0 mph 3.2 km/h
Low 1.3 mph 2.1 km/h
Service brake Hydraulic lock


Center frame H-leg frame
Track frame Box-section
Track type Sealed
Track adjuster Hydraulic
No. of shoes:
Standard, SP, Shovel 48 each side
LC 55 each side
No. of carrier rollers 3 each side
No. of track rollers:
Standard, SP, Shovel 8 each side
LC 10 each side

Coolant and Lubricant Capacity (refilling)

Fuel tank359.3 US gal1360 ltr
Radiator37.5 US gal142 ltr
Engine22.7 US gal86 ltr
Final drive, each side5.5 US gal21 ltr
Swing drive2 x 6.4 US gal2 x 24.3 ltr
Hydraulic tank177.0 US gal670 ltr
PTO3.6 US gal13.5 ltr



  • Air cleaner, double element, dry type
  • Auto decelerator
  • Electric fuel priming pump
  • Engine, Komatsu SAA6D170E-5
  • Fuel pre-filters (10 micron) with water separator
  • Fuel primary filter (2 micron)
  • Variable speed cooling fan, hydraulic drive, reversible


  • Alternator, 90 amp, 24 V
  • Batteries, 220 Ah, 2 x 12 V
  • Interconnected horn and flashing light
  • Power supply, 12V
  • Starting motors, 11kW x 2
  • Step light with timer
  • Working lights-2 boom, 2 cab top front, 1 cab bottom


  • 700 mm 28'' double grouser (PC1250-8)
  • 1000 mm 39.4'' double grouser (PC1250LC-8)
  • 8 track/3 carrier rollers (each side)(PC1250-8)
  • 10 track/3 carrier rollers (each side)(PC1250LC-8)
  • Hydraulic track adjusters (each side)
  • Track guiding guard (each side)


  • Engine thermal guards and fan guard
  • Dust-proof net for radiator and oil cooler
  • Pump/engine room partition wall
  • Travel motor guards
  • Revolving frame under cover (Heavy-duty)
  • Track frame undercover (center)


  • Damper mount, all-weather, pressurized, sound- suppressed cab with tinted safety glass windows, lockable door, intermittent window wiper and washer, floormat, cigarette lighter and ashtray
  • Instrument panel with electronic display/monitor system, electronically-controlled throttle dial, electric service meter, gauges (coolant temperature, hydraulic temperature and fuel level), caution lights (electric charge, engine oil pressure, and air cleaner clogging), indicator lights (engine preheating and swing lock light) level check lights (coolant, engine oil, and hydraulic oil level), self-diagnostic system with trouble data memory
  • Automatic air conditioner/heater/defroster system
  • FOPS
  • Pull-up type front window, lockable
  • Radio, AM-FM
  • Rearview mirrors, left and right
  • Seat, fully adjustable with suspension
  • Seat belt 78 mm 3" non-cinching


  • Fully hydraulic, with Electronic Open-Center Load- Sensing (EOLSS) and engine speed sensing (pump and engine mutual control system)
  • One gear pump for control circuit
  • Two axial piston motors for swing with single-stage relief valve
  • One axial piston motor per track for travel with counter balance valve
  • Three variable capacity piston pumps (2 Main, 1 Swing)
  • Three control valves, 5+4+4 spools (boom, arm, bucket, swing, and travel)
  • Control levers, wrist control levers for arm, boom, bucket, and swing with PPc system
  • Control levers and pedals for steering and travel with PPC system
  • Oil cooler, hydraulic
  • In-line high pressure hydraulic filters
  • Shockless boom control
  • Swing priority mode
  • Two-mode setting for boom
  • Working modes: Power, Economy (four level), Heavy Lift


  • Brakes, hydraulic lock travel brakes, oil disc parking
  • Hydrostatic two travel speed system with planetary double reduction final drive


  • Automatic swing holding brake
  • Corrosion resister
  • Counterweight, 18000 kg 39,680 lb
  • Grease gun, air pump type
  • Horn, air
  • Large handrails and steps
  • Lift capacity chart
  • Marks and plates, English
  • One-touch engine oil drainage
  • Paint, Komatsu standard
  • PM tune-up service connector
  • Slip resistant plates
  • Travel alarm
  • Vehicle Health Monitoring System (VHMS) with ORBCOMM
  • Wide catwalk


Arms (Backhoe):

  • 3400 mm / 11'2'' arm assembly
  • 3400 mm / 11'2'' SP arm assembly (PC1250-8)
  • 4500 mm / 14'9'' arm assembly
  • 5700 mm / 18'8'' arm assembly

Booms (Backhoe):

  • 7800 mm / 25'7'' SP boom assembly (PC1250-8)
  • 9100 mm / 29'10'' boom assembly


  • 1000 mm / 39.4'' double grouser (PC1250-8)
  • 1200 mm / 47.25'' double grouser (PC1250LC-8)


  • Cab full front guard (PC1250-8)
  • Track roller guard (full length) (PC1250-8)