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S
S
PECIFICATIONS
PECIFICATIONS
& E
& E
QUIPMENT
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D170E-3
Type . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injection
Aspiration . . . . . . . . . . . . . . . Turbocharged and air-to-air aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm 6.69"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm 6.69"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . 23.15 ltr 1,413 in
Flywheel horsepower . . . . . . . . . . . . . . 485 kW 651 HP @ 1800 rpm
(SAE J1349)
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, electronic
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:
Main . . . . . . . . . . . . . . . . . . . 2 x 494 ltr/min 2 x 130.5 U.S. gpm
Swing. . . . . . . . . . . . . . . . . . . 1 x 629 ltr/min 1 x 166.2 U.S. gpm
Sub-pump for control circuit. . . . . . . . . . . . . . . . . . . . . . . Gear pump
Hydraulic motors:
Travel . . . . . . . . . . . . . . . 2 x axial piston motor with parking brake
Swing . . . . . . . . . . 2 x axial piston motor with swing holding brake
Relief valve setting:
Implement circuits
Backhoe . . . . . . . . . . . . . . . . . 31.4 MPa
320 kg/cm
Loading shovel . . . . . . . . . . . . 33.3 MPa
340 kg/cm
Travel circuit . . . . . . . . . . . . . . . 34.3 MPa
350 kg/cm
Swing circuit . . . . . . . . . . . . . . . 27.0 MPa
275 kg/cm
Pilot circuit . . . . . . . . . . . . . . . . . . 2.9 MPa
30 kg/cm
Hydraulic cylinders:
Number of cylinders—bore x stroke
Backhoe
Boom . . . . . . . . . . . . . . . . 2 – 225 mm x 2390 mm
Arm . . . . . . . . . . . . . . . . . 1 – 250 mm x 2435 mm
Bucket
Std . . . . . . . . . . . . . . . . . . 2 – 160 mm x 1825 mm
SP . . . . . . . . . . . . . . . . . . 2 – 160 mm x 1950 mm
Loading shovel
Boom . . . . . . . . . . . . . . . . 2 – 225 mm x 1960 mm
Arm . . . . . . . . . . . . . . . . . 2 – 185 mm x 1765 mm
Bucket . . . . . . . . . . . . . . . 2 – 200 mm x 1700 mm
Bottom dump . . . . . . . . . . 2 – 160 mm x 435 mm
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 . . . . . . . . . . . . . . . . . . . 70000 kg 154,320 lb
Gradability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70%
Maximum travel speed
Low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 km/h 1.3 mph
High . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 km/h 2.0 mph
Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock
10
QUIPMENT
SWING SYSTEM
Driven by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic motor
Swing reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Swing circle lubrication . . . . . . . . . . . . . . . . . . . . . . . Grease-bathed
Swing lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil disc brake
Swing speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 rpm
3
UNDERCARRIAGE
Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H-leg frame
Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section
Track chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed
Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
No. of shoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 each side
No. of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 each side
No. of track rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 each side
COOLANT AND LUBRICANT
CAPACITY
(REFILLING)
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . 1360 ltr
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 ltr
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5 ltr
Final drive, each side . . . . . . . . . . . . . . . . . . . 20 ltr
Swing drive . . . . . . . . . . . . . . . . . . . . . . . . . 24.3 ltr
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . 670 ltr
OPERATING WEIGHT
(APPROXIMATE)
BACKHOE
PC1250-7: Operating weight, including 9100 mm 29'10" boom, 3400
mm 11'2" arm, SAE heaped 5.0 m
3
6.5 yd
3
backhoe bucket, operator,
2
4,550 psi
lubricant, coolant, full fuel tank, and the standard equipment.
2
4,830 psi
2
4,980 psi
PC1250SP-7: Operating weight, including 7800 mm 25'7" boom,
2
3,910 psi
3400 mm 11'2" arm, SAE heaped 6.7 m
3
8.8 yd
2
430 psi
length roller guard, operator, lubricant, coolant, full fuel tank, and the
standard equipment.
PC1250-7
Operating
Ground
Operating
8.9" x 94.1"
Shoes
Weight
Pressure
Weight
9.8" x 95.9"
Double grouser
137 kPa
106700 kg
109500 kg
700 mm
1.40 kgf/cm
2
235,270 lb
241,410 lb
6.3" x 71.8"
28"
19.9 psi
6.3" x 76.8"
97 kPa
1000 mm
109010 kg
0.99 kgf/cm
2
39.4"
240,330 lb
14.1 psi
8.9" x 77.2"
7.3" x 69.5"
7.9" x 66.9"
LOADING SHOVEL
6.3" x 17.1"
Operating weight, including 5300 mm 17'5" boom, 3800 mm 12'6"
arm, 6.5 m
3
8.5 yd
3
heaped bucket, operator, lubricants, coolant, full
fuel tank and standard equipment.
PC1250-7
Shoes
Operating Weight
Double grouser
110000 kg
700 mm
242,510 lb
28"
STANDARD EQUIPMENT
ENGINE AND RELATED ITEMS:
● Air cleaner, double element, dry
● Cooling fan, with fan guard
● Engine, Komatsu SAA6D170E-3
ELECTRICAL SYSTEM:
● Alternator, 50 amp, 24 V
● Batteries, 220 Ah, 2 x 12 V
● Starting motors, 11kW x 2
● Working lights-2 boom, 2 cab top front, 1 cab bottom, 1 cab
RH(Step light with timer)
● Auto decelerator
UNDERCARRIAGE:
● 700 mm 28'' double grouser
● 8 track/3 carrier rollers (each side)
● Hydraulic track adjusters (each side)
● Track guiding guard (each side)
GUARDS AND COVERS:
● Dust-proof net for radiator and oil cooler
● Pump/engine room partition cover
● Travel motor guards
● Revolving frame under cover (Heavy-duty)
OPERATOR ENVIRONMENT:
● Damper mount, all-weather, sound-suppressed cab with tinted
359.3 U.S. gal
safety glass windows, lockable door, intermittent window wiper
37.3 U.S. gal
and washer, floormat, cigarette lighter and ashtray
14.5 U.S. gal
● Instrument panel with electronic display/monitor system, electroni-
5.3 U.S. gal
cally-controlled throttle dials, electric service meter, gauges
6.4 U.S. gal
(coolant temperature and fuel level), caution lights (electric
177.0 U.S. gal
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
● Rearview mirrors
● Seat, fully adjustable with suspension
● Cab with fixed front window
3
backhoe bucket, full
PC1250SP-7
Ground
OPTIONAL EQUIPMENT
Pressure
140 kPa
● Alternator, 90 Amp, 24 V
1.43 kgf/cm
2
● Arms (Backhoe):
20.3 psi
—3400mm 11'2'' arm assembly
—3400mm 11'2'' HD arm assembly
–
–
—3400mm 11'2'' SP arm assembly
—4500mm 14'9'' arm assembly
—4500mm 14'9'' HD arm assembly
—5700mm 18'8'' arm assembly
● Arms (Loading shovel):
—3800mm 12'6'' arm assembly
● Auto air conditioner
● Automatic grease system, Lincoln 18 ltr
● Booms (Backhoe):
Ground Pressure
—7800mm 25'7'' SP boom assembly
—9100mm 29'10'' boom assembly
141kPa
● Booms (Loading shovel):
1.44 kg/cm
2
20.1 psi
—5300mm 17'5'' boom assembly
PC1250-7
HYDRAULIC EXCAVATOR
HYDRAULIC CONTROLS:
● 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
● 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
● In-line filter
● Shockless boom control
● Two-mode setting for boom
DRIVE AND BRAKE SYSTEM:
● Brakes, hydraulic lock travel brakes, oil disc parking
● Hydrostatic two travel speed system with planetary triple reduction
final drive
OTHER STANDARD EQUIPMENT:
● Automatic swing holding brake
● Corrosion resister
● Counterweight, 18000kg 39,680lb
● Horn, air
● Marks and plates, English
● Paint, Komatsu standard
● Vandalism protection locks
● Wide catwalk and large handrails
● One-touch engine oil drainage
● PM tune-up service connector
● Remote greasing for radiator fan drive
● Cab with pull-up type front window
● Communication system for VHMS(Orbcomm)
● General tool kit
● Grease gun, air pump
● Heater
● Interconnected horn and flashing light
● Radio AM/FM
● Seat belt 78 mm 3''
● Shoes:
-1000 mm 39.4'' double grouser
● Spare parts for first service
● Track roller guard (full length)
● Track frame undercover (center)
● Travel alarm
● Vehicle Health Monitoring System (VHMS)
11
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