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
safety glass windows, lockable door, intermittent window wiper
and washer, floormat, cigarette lighter and ashtray
●
Instrument panel with electronic display/monitor system, electroni-
cally-controlled throttle dials, electric service meter, gauges
(coolant 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
●
Rearview mirrors
●
Seat, fully adjustable with suspension
●
Cab with fixed front window
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
OPTIONAL EQUIPMENT
●
Alternator, 90 Amp, 24 V
●
Arms (Backhoe):
—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):
—7800mm
25'7''
SP boom assembly
—9100mm
29'10''
boom assembly
●
Booms (Loading shovel):
—5300mm
17'5''
boom assembly
●
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
S
PECIFICATIONS
&
E
QUIPMENT
S
PECIFICATIONS
&
E
QUIPMENT
10
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
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
359.3 U.S. gal
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 ltr
37.3 U.S. gal
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5 ltr
14.5 U.S. gal
Final drive, each side . . . . . . . . . . . . . . . . . . . 20 ltr
5.3 U.S. gal
Swing drive . . . . . . . . . . . . . . . . . . . . . . . . . 24.3 ltr
6.4 U.S. gal
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . 670 ltr
177.0 U.S. gal
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,
lubricant, coolant, full fuel tank, and the standard equipment.
PC1250SP-7: Operating weight, including 7800 mm
25'7"
boom,
3400 mm
11'2"
arm, SAE heaped 6.7 m
3
8.8 yd
3
backhoe bucket, full
length roller guard, operator, lubricant, coolant, full fuel tank, and the
standard equipment.
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
3
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
2
4,550 psi
Loading shovel . . . . . . . . . . . . 33.3 MPa
340 kg/cm
2
4,830 psi
Travel circuit . . . . . . . . . . . . . . . 34.3 MPa
350 kg/cm
2
4,980 psi
Swing circuit . . . . . . . . . . . . . . . 27.0 MPa
275 kg/cm
2
3,910 psi
Pilot circuit . . . . . . . . . . . . . . . . . . 2.9 MPa
30 kg/cm
2
430 psi
Hydraulic cylinders:
Number of cylinders—bore x stroke
Backhoe
Boom . . . . . . . . . . . . . . . . 2 – 225 mm x 2390 mm
8.9" x 94.1"
Arm . . . . . . . . . . . . . . . . . 1 – 250 mm x 2435 mm
9.8" x 95.9"
Bucket
Std . . . . . . . . . . . . . . . . . . 2 – 160 mm x 1825 mm
6.3" x 71.8"
SP . . . . . . . . . . . . . . . . . . 2 – 160 mm x 1950 mm
6.3" x 76.8"
Loading shovel
Boom . . . . . . . . . . . . . . . . 2 – 225 mm x 1960 mm
8.9" x 77.2"
Arm . . . . . . . . . . . . . . . . . 2 – 185 mm x 1765 mm
7.3" x 69.5"
Bucket . . . . . . . . . . . . . . . 2 – 200 mm x 1700 mm
7.9" x 66.9"
Bottom dump . . . . . . . . . . 2 – 160 mm x 435 mm
6.3" x 17.1"
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
PC1250-7
HYDRAULIC EXCAVATOR
LOADING SHOVEL
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
Ground Pressure
Double grouser
110000 kg
141kPa
700 mm
242,510 lb
1.44 kg/cm
2
28"
20.1 psi
PC1250-7
PC1250SP-7
Operating
Ground
Operating
Ground
Shoes
Weight
Pressure
Weight
Pressure
Double grouser
106700 kg
137 kPa
109500 kg
140 kPa
700 mm
1.40 kgf/cm
2
1.43 kgf/cm
2
28"
235,270 lb
19.9 psi
241,410 lb
20.3 psi
1000 mm
109010 kg
97 kPa
0.99 kgf/cm
2
–
–
39.4"
240,330 lb
14.1 psi
