Komatsu Galeo PC1250-7 Backhoe User manual

FLYWHEEL HORSEPOWER
485 kW 651 HP @ 1800 rpm
OPERATING WEIGHT
106700–109500 kg
235,270–241,410 lb
Photo may include optional equipment.
HYDRAULIC EX C AVATO R

3
●Protected hydraulic circuit
The cool-running hydraulic system is protected with the most extensive
filtration system available, including a high pressure in-line filter for each
main pump.
●Sturdy guards shield the travel motors against damage
from rocks.
●Highly Reliable Electronic Devices
Exclusively designed electronic devices have passed severe testing.
- Controller - Sensors - Connectors - Heat resistant wiring
See page 7.
FLYWHEEL HORSEPOWER
485 kW 651 HP @ 1800 rpm
OPERATING WEIGHT
106700– 109500 kg
235,270 – 241,410 lb
BACKHOE
3.4–6.7 m34.4–8.8 yd3
LOADING SHOVEL
6.5 m38.5 yd3
PC1250-7
HYDRAULIC EXCAVATOR
Large Comfortable Cab
●Low noise and vibration with cab damper mounting
●Large-capacity cab with narrow corner posts provides improved visibility
●Large-capacity air conditioner (option)
●Pressurized cab prevents external dust from entering
See page 8.
Easy maintenance
●Replacement intervals are extended for engine
oil, engine oil filter, and hydraulic filter
Advanced monitor
features
●Machine condition can be
checked with Equipment
Management Monitoring
System (EMMS) See page 5.
●Two working modes combine
with heavy lift mode for maxi-
mum productivity See page 5.
Large platform and
catwalk provide easy
access to the engine and
hydraulic equipment
2
PC1250-7 Series Hydraulic Excavator
W ALK -A ROUND
W ALK -A ROUND
Building on the technology and expertise Komatsu has accumulated since its establishment
in 1921, GALEO presents customers worldwide with a strong, distinctive image of techno-
logical innovation and exceptional value. The GALEO brand will be employed for
Komatsu’s full lineup of advanced construction and mining equipment. Designed with
high productivity, safety and environmental considerations in mind, the machines in
this line reflect Komatsu’s commitment to contributing to the creation of a better world.
Genuine Answers for Land and Environment Optimization
●Largest digging force
Bucket digging force and arm crowd force are largest in its class.
●Largest bucket capacity in its class. The wide opening shape and
shallow bottom facilitates loading.
●Faster hydraulics
The high-output engine on the PC1250-7 provides plenty of hydraulic
horsepower for faster cycle times and increased productivity.
●Fuel consumption is reduced 13% with Economy Mode.
See page 4.
Productivity Features
●Strengthened boom and arm have larger
cross-sections and improved welding for maxi-
mum strength and reliability.
Excellent Reliability and Durability
●Two-mode setting for boom
Switch selection allows either powerful digging
or smooth boom operation.
●Shockless boom
Switch selection reduces chassis vibration after
sudden stops. See page 5.
●Boom foot hoses are arranged on the inside,
improving hose life and safety. See page 6.
Harmony with Environment
●Low emission engine
Powerful turbocharged and air-to-air aftercooled Komatsu SAA6D170E-3
engine provides 485 kW 651 flywheel HP.
See page 4.

Working Mode Application Advantage
Active ●Maximum production/power
AMode ●Fast cycle times
EEconomy ●Good cycle times
Mode ●Good fuel economy
Hydraulics
Unique three-pump system assures smooth compound movement of the
work equipment. OLSS (Open Center Load Sensing System) controls all
three pumps for efficient engine power use. This system also reduces
hydraulic loss during operation.
Active and Economy mode
The PC1250-7 excavator is equipped with two working modes. Each mode
is designed to match engine speed, pump speed, and system pressure
with the current application, giving the operator flexibility to match equip-
ment performance to the job at hand.
5
Multi-Function
Color Monitor
Extend and
retract
PC1250-7
HYDRAULIC EXCAVATOR
Working Mode Selection
Heavy Lift Mode
Gives the operator approximately 10% more lifting force on the boom
when needed for handling rock or heavy lifting applications.
Two Settings for the Boom
Smooth mode provides easy operation for gathering blasted rock and
scraping operations. When maximum digging force is needed, switch to
power mode for more effective excavating.
Swing priority setting
The swing priority setting allows the operator to use the same easy motion
for 180˚ loading as 90˚ loading operations. By altering the oil flow this set-
ting allows you to select either boom or swing as the priority for increased
production.
Shockless Boom Control
The PC1250-7 features a shockless
valve (double-check slow return valve)
that automatically reduces the amount
of vibration present when operating the
boom. Operator fatigue is reduced
(which can improve safety and
productivity), and spillage caused by
vibration is prevented.
Two Working Modes
Heavy Lift Mode
Engine
The PC1250-7 gets its exceptional power and work capacity
from its Komatsu SAA6D170E-3 engine. Output is
485 kW 651 flywheel HP providing more hydraulic power.
In addition, the fuel consumption is reduced by 13%
when using Economy Mode.
Noise levels are reduced for greater operator comfort.
Largest Bucket Capacity
Bucket capacity is the largest in its class and its large
opening and shallow bottom offers easy loading.
Improved Machine Stability
The center of gravity is moved rearward and the 18.0 tonne
19.8 U.S. ton counterweight provides the stability and lifting
capacity needed for maximum productivity.
Additional Features
• Large digging force
• Large drawbar pull
• Fast cycle times
High Production and Low Fuel Consumption
4
P RODUCTIVITY
F EATURES
P RODUCTIVITY
F EATURES
EMMS (Equipment Management
Monitoring System)
1. Monitor Function
Controller monitors engine oil
level, coolant temperature, bat-
tery charge and air clogging,
etc.
The controller finds any abnor-
mality, and displays it on the
LCD.
2. Maintenance Monitor Function
informs replacement time of oil
and filters on LCD when the
replacement interval is reached.
3. Trouble Data Memory Function
stores machine abnormalities
(error codes) in the monitor for
effective trouble shooting.

A
B
C
D
E
Coolant
Swing machinery
Hydraulic tank
Engine oil
PTO case
Aftercooler fan mount
Fan belt
Corrosion resister
Fuel filter
Hydraulic drain filter
Pilot filter
Return filter
PTO lubricating oil filter
Engine oil filter
1
2
3
4
5
6
7
8
9
air-operated
greasing pump
utility space
Increased Reliability
The PC1250-7 incorporates many improvements in strength and reliability.
Frame structure. Plate thickness of the revolving frame and center frame
is increased and stiffener plates are added to improve durability.
The boom and arm have increased cross section and plate thickness,
as well as continuous both-side groove welding, improving digging
and side contact strength.
All of the major machine components such as engine, hydraulic pumps,
hydraulic motors, control valves, etc., are exclusively designed and
manufactured by Komatsu.
The undercarriage is strengthened
to provide excellent reliability and
durability when working on rocky
ground or blasted rock.
Metal guard rings protect all the
hydraulic cylinders and improve
reliability.
Heat-resistant wiring is utilized not
only for the electric circuit of the
engine, but also for other whole
units.
With the circuit breaker, the
machine can be easily restarted
after repair.
FEM stress analysis
PC1250-7
HYDRAULIC EXCAVATOR
Sturdy guards shield the travel
motors against damage from rocks.
7
M AINTENANCE
F EATURES
M AINTENANCE
F EATURES
Easy Maintenance
Komatsu designed the PC1250-7 for easy service access.
Wide walkways for maintenance
are provided around the engine and
hydraulic components, allowing
easy access for inspection and mainte-
nance points. Access doors open out-
ward, making inspection of the engine
and hydraulic systems easy.
Large service doors provide easy
access to the engine compartments.
(Photo shown with side door open to
front of engine).
Reduced Maintenance Costs
Replacement intervals of engine oil,
engine oil filter, and hydraulic oil filter
are extended to 500 hours, and
replacement interval of hydraulic oil is
extended to 5000 hours.
6
Employment of DT-type connectors
which seal tight and have higher
reliability.
High-pressure in-line filtration. The
PC1250-7 has the most extensive filtration
system available, providing in-line filters as
standard equipment. An in-line filter in the
outlet port of each main hydraulic pump
reduces failures caused by contamination.
In-line filtration
Track roller guard (full length)
(optional)
Machine Availability Is Increased
by Vehicle Health Monitoring
System (VHMS) (Optional)
Vehicle Health Monitoring System
(VHMS) collects and stores operation
data of machine and major components
in real time. Collected data are not only
various kinds of machine data such as
engine oil temperature, engine exhaust
temperature etc, but also includes oper-
ating condition data such as fuel con-
sumption, engine load factor etc.
These data can be utilized by download-
ing personal computer to effectively
diagnosis machine health conditions.
Moreover, combined with EMMS func-
tion which displays error code, machine
and maintenance information on color
graphics screen (patent pending), VHMS
reduces maintenance time and increas-
es machine availability.
Orbit communication function
(Orbcomm) available as an upgraded
feature of VHMS enables remote moni-
toring of the machine condition.
Sturdy guards shield the piping
against damage from rocks.
The boom foot hoses are arranged
inside to reduce hose bend during
operation, extending hose life and
improving operator safety.

9
PC1250-7
HYDRAULIC EXCAVATOR
Engine/pump room partition prevents oil
from spraying on the engine if a hydraulic
hose should burst.
Horn interconnected with flash light
(optional) give visual and audible notice of
the excavator’s operation when
activated.
Safety Features
Engine/pump
room partition
Step light with timer automatically provides
light for two minutes to allow the operator to
get off the machine safely.
Step light
with timer
Large handrails and wide walkways
are provided around revolving frame for easier and safer access to engine and hydraulic
components.
8
W ORKING
E NVIRONMENT
W ORKING
E NVIRONMENT
Operator’s Cab
Superb Visibility
The PC1250-7’s large capacity cab and
increased glass area provide superb front
visibility.
Cab Mounts
The new cab damper mounting reduces
vibration and noise at operator’s seat.
Noise
The noise levels at the operator’s ear are
decreased by improving the cab mounts
and cab sealing performance.
Multi-Position Controls
The multi-position,
pressure proportional
control levers allow
the operator to work in
comfort while maintaining
precise control.
A double-slide mechanism allows the
seat and controllers to move together
or independently, allowing the operator
to position the controllers for maximum
productivity and comfort.
Pressurized Cab
Cab pressurization is increased to prevent
external dust from entering the cab with
optional air conditioner.
Automatic Air Conditioner
(Optional)
A 6,900 kcal (SAE) air conditioner is
utilized. The bi-level control function keeps
the operator's head and feet cool and
warm respectively. This improved air flow
function keeps the inside of the cab
comfortable throughout the year.
The cab interior is spacious and provides a
comfortable working environment…
Seat belt shown in photo is optional.
Thermal guards are placed around
high-temperature parts of the engine and
accessory drive.
Silicon
Oil
Rubber
Spring
Pull up front window with assist
(Optional)
Photo shown includes optional
Falling Object Guard (FOG).

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 m36.5 yd3backhoe 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 m38.8 yd3backhoe 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 in3
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/cm24,550 psi
Loading shovel . . . . . . . . . . . . 33.3 MPa 340 kg/cm24,830 psi
Travel circuit . . . . . . . . . . . . . . . 34.3 MPa 350 kg/cm24,980 psi
Swing circuit . . . . . . . . . . . . . . . 27.0 MPa 275 kg/cm23,910 psi
Pilot circuit . . . . . . . . . . . . . . . . . . 2.9 MPa 30 kg/cm2430 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 m38.5 yd3heaped 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/cm2
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/cm21.43 kgf/cm2
28" 235,270 lb 19.9 psi 241,410 lb 20.3 psi
1000 mm 109010 kg 97 kPa
0.99 kgf/cm2––
39.4" 240,330 lb 14.1 psi

(R=4870 16'0'')
A
B
4810 15'9''
4995 16'5''
6425 21'1''
50 2'' 5'10''
3925 12'11''
4880 16'0''
3470 11'5''
700 28''
3900 12'10''
990 3'3''
2240 7'4''
4600 15'1''
5355 17'7''
4965 16'3''
4120 13'6''
1790
WORKING RANGE AND BUCKET SELECTION
LOADING SHOVEL DIMENSIONS
Type of bucket Bottom dump
Capacity–heaped 6.5 m38.5 yd3
A Max. cutting height 12330 mm 40'5"
B Max. dumping height 8700 mm 28'7"
C Max. digging depth 3650 mm 12'0"
D Max. digging reach 11400 mm 37'5"
E Max. digging reach at ground level 10900 mm 35'9"
F Level crowding distance 4480 mm 14'8"
G Min. crowd distance 6130 mm 20'1"
Bucket digging force 59000 kg 130,100 lb
Arm crowd force 62000 kg 136,710 lb
Type of bucket Bottom dump
Capacity–heaped 6.5 m38.5 yd3
A Overall Height 6200 mm 20'4"
B Overall Length 10940 mm 35'11"
Working Range
Type of bucket Bottom dump
Capacity–heaped 6.5 m38.5 yd3
Width 2680 mm 105.5"
Weight 9700 kg 21,390 lb
No. of bucket teeth 6
Recommended uses General-purpose
digging and loading
Bucket Selection
2
1
3
0
4
5
6
7
8
9
10
11
12
13
-1
-2
-3
-4
-5
012345678910111213
E
D
G
F
B
A
C
G.L.
PC1250-7
HYDRAULIC EXCAVATOR
WORKING RANGE
BACKHOE DIMENSIONS
BACKHOE BUCKET, ARM, AND BOOM COMBINATION
Unit: mm ft in
These charts are based on over-side stability with fully loaded bucket at maximum reach.
: General purpose use, density up to 2.1 t/m33,500 lb/yd3: General purpose use, density up to 1.8 t/m33,000 lb/yd3
▲: General purpose use, density up to 1.5 t/m32,500 lb/yd3—: Not useable
(R=4870 16'0'')
A
B
4810 15'9''
4995 16'5''
6425 21'1''
50 2'' 1790
3925 12'11''
4880 16'0''
3470 11'5''
700 28''
3900 12'10''
990 3'3''
2240 7'4''
4600 15'1''
5355 17'7''
4965 16'3''
4120 13'6''
5'10''
H
G
F
C
E
A
B
2
1
3
0
4
5
6
7
8
9
10
11
12
13
14
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
0123456789101112131415161718
D
8 ft
PC1250-7 PC1250SP-7
3.4 m 11'2" arm 4.5 m 14'9" arm 5.7 m 18'8" arm 3.4 m 11'2" arm
A Max. digging height 13400 mm 44'0" 13490 mm 44'3" 13910 mm 45'8" 13000 mm 42'8"
B Max. dumping height 8680 mm 28'6" 9000 mm 29'6" 9440 mm 31'0" 8450 mm 27'9"
C Max. digging depth 9350 mm 30'8" 10440 mm 34'3" 11590 mm 38'0" 7900 mm 25'11"
D Max. vertical wall
digging depth 7610 mm 25'0" 8490 mm 27'10" 9480 mm 31'1" 5025 mm 16'6"
E Max. digging depth
of cut for 8' level 9220 mm 30'3" 10340 mm 33'11" 11500 mm 37'9" 7745 mm 25'5"
F Max. digging reach 15350 mm 50'4" 16340 mm 53'7" 17450 mm 57'3" 14070 mm 46'2"
G Max. digging reach
at ground level 15000 mm 49'3" 16000 mm 52'6" 17130 mm 56'2" 13670 mm 44'10"
H Min. swing radius 7965 mm 26'2" 7990 mm 26'3" 8150 mm 26'9" 6415 mm 21'1"
Bucket digging force (SAE) 43000 kg 43000 kg 35000 kg 51200 kg
94,800 lb 94,800 lb 77,160 lb 112,900 lb
Arm crowd force (SAE) 40000 kg 33300 kg 28700 kg 40300 kg
88,180 lb 73,410 lb 63,270 lb 88,860 lb
Bucket digging force (ISO) 48800 kg 48800 kg 39700 kg 58100 kg
107,590 lb 107,590 lb 87,520 lb 128,110 lb
Arm crowd force (ISO) 42000 kg 34400 kg 29200 kg 42000 kg
92,590 lb 75,840 lb 64,375 lb 92,590 lb
PC1250-7 PC1250SP-7
3.4 m 11'2" arm 4.5 m 14'9" arm 5.7 m 18'8" arm 3.4 m 11'2" arm
A Overall Height 6040 mm 19'10" 6460 mm 21'2" 6990 mm 22'11" 6265 mm 20'7"
B Overall Length 16020 mm 52'7" 16050 mm 52'8" 15840 mm 52'0" 14790 mm 48'6"
BUCKET CAPACITY (HEAPED) WIDTH
Without Side With Side WEIGHT
SAE, PCSA CECE cutters or shrouds cutters or shrouds (with side cutters) ARM LENGTH
m3 yd3m3 yd3mm in mm in kg lb m ft in
PC1250-7 (use with 9.1 m boom) 3.4 11'2" 4.5 14'9" 5.7 18'8"
3.4 4.4 3.0 3.9 1500 59" 1670 65.7" 3600 7,940 —
4.0 5.2 3.5 4.6 1710 67.3" 1880 74" 3800 8,380 ▲
5.0 6.5 4.3 5.6 2050 80.7" 2220 87.4" 4400 9,700 ▲—
5.2 6.8 4.5 5.9 2050 80.7" 2110 83.1" 5100 11,240 ▲—
PC1250SP-7 (use with 7.8 m boom) 3.4 11'2" ——
6.7 8.8 5.9 7.7 2280 69.8" 2340 92.1" 6000 13,230 ——
12 13

31.4MPa(Heavy Lift Off) 34.3MPa(Heavy Lift On)
A Maximum 12.2 m 40' 10.7 m 35' 9.1 m 30' 7.6 m 25' 6.1 m 20' 4.6 m 15'
B CfCsCfCsCfCsCfCsCfCsCfCsCfCs
9.1 m *15200 *15200 *18000 17900
30' *33,500 *33,500 *39,700 39,400
6.1 m *15950 12900 *20000 17100 *22950 22750 *27900 *27900
20' *35,100 28,500 *44,200 37,700 *50,600 50,200 *61,500 *61,500
3.0 m 15350 11600 16050 12200 20500 15750 26550 20500 *34950 27150
10' 33,800 25,600 35,400 26,900 45,200 34,800 58,600 45,200 *77,000 59,800
0.0 m 15950 12050 19600 14900 23750 17850 33800 25600
0' 35,200 26,500 43,200 32,800 52,400 39,300 74,600 56,400
–3.0 m 19600 14900 19650 14950 25150 19150 34050 25800 *43850 37750 *39250 *39250
–10' 43,200 32,900 43,300 33,000 55,400 42,200 75,000 56,800 *96,700 83,200 *86,600 *86,600
–6.1 m *23500 *23500 *25400 *25400 *32550 *32550
–20' *51,800 *51,800 *56,000 *56,000 *71,700 *71,700
9.1 m *15200 *15200 *15500 *15500
30' *33,500 *33,500 *34,200 *34,200
6.1 m *15850 12900 *17300 17100 *19950 *19950 *24400 *24400
20' *34,900 28,500 *38,100 37,700 *44,000 *44,000 *53,800 *53,800
3.0 m 15350 11600 16050 12200 *19800 15750 *23900 20500 *30550 27150
10' 33,800 25,600 35,400 26,900 *43,700 34,800 *52,700 45,200 *67,400 59,800
0.0 m 15950 12050 19600 14900 *23750 17850 *32650 25600
0' 35,200 26,500 43,200 32,800 *52,400 39,300 *72,000 56,400
–3.0 m *19600 14900 *19650 14950 *24750 19150 *30750 25800 *38350 37750 *39250 *39250
–10' *43,200 32,900 *43,300 33,000 *54,600 42,200 *67,800 56,800 *84,500 83,200 *86,600 *86,600
–6.1 m *20150 *20150 *21900 *21900 *28150 *28150
–20' *44,500 *44,500 *48,200 *48,200 *62,100 *62,100
A Maximum 12.2 m 40' 10.7 m 35' 9.1 m 30' 7.6 m 25' 6.1 m 20' 4.6 m 15'
B CfCsCfCsCfCsCfCsCfCsCfCsCfCs
9.1 m *11980 *11980 *17295 *17295
30' *26,400 *26,400 *38,100 *38,100
6.1 m *12480 *12480 *16505 16035 *24585 22415 *28980 *28980 *36565 *36565
20' *27,500 *27500 *36,300 35,300 *54,200 49,400 *63,800 *63,800 *80,600 *80,600
3.0 m *14805 13615 19995 15210 26730 20565 *35485 28275 *47680 40670
10' *32,600 30,000 44,000 33,500 58,900 45,300 *78,200 62,300 *105,000 89,600
0.0 m 19160 14430 19270 14520 25360 19265 31535 23345 *48975 38180
0' 42,200 31,800 42,400 32,000 55,900 42,400 69,500 51,400 *108,000 84,100
–3.0 m *24150 19355 *24215 19390 *31080 24655 *41660 38740 *52705 *52705
–10' *53,200 42,600 *53,300 42,700 *68,500 54,300 *91,800 85,400 *116,200 *116,200
–6.1 m *23500 *23500 *25400 *25400 *32550 *32550
–20' *51,800 *51,800 *56,000 *56,000 *71,700 *71,700
9.1 m *11980 *11980 *17295 *17295
30' *26,400 *26,400 *38,100 *38,100
6.1 m *12480 *12480 *16505 16035 *21380 *21380 *25410 *25410 *32315 *32315
20' *27,500 *27,500 *36,300 35,300 *47,100 *47,100 *56,000 *56,000 *71,200 *71,200
3.0 m *14805 13615 19995 15210 *24715 20565 *31095 28275 *41990 40670
10' *32,600 30,000 44,000 33,500 *54,400 45,300 *68,500 62,300 *92,500 89,600
0.0 m 19160 14430 19270 14520 25360 19265 *30260 23345 *43000 38180
0' 42,200 31,800 42,400 32,000 55,900 42,400 *66,700 51,400 *94,800 84,100
–3.0 m *20745 19355 *20800 19390 *26790 24655 *36355 *36355 *46065 *46065
–10' *45,700 42600 *45,800 42,700 *59,000 54,300 *80,100 *80,100 *101,500 *101,500
–6.1 m *23500 *23500 *25400 *25400 *32550 *32550
–20'
A Maximum 12.2 m 40' 10.7 m 35' 9.1 m 30' 7.6 m 25' 6.1 m 20' 4.6 m 15'
B CfCsCfCsCfCsCfCsCfCsCfCsCfCs
9.1 m *9300 *9300
30' *20,500 *20,500
6.1 m *9650 *9650 *16650 13400 *18150 17700 *20550 *20550
20' *21,300 *21,300 *36700 29,600 *40,000 39,000 *45,300 *45,300
3.0 m *10950 9950 16350 12450 20800 16050 *25600 20950 *32350 28000
10' *24,200 21,900 36,000 27,500 45,900 35,400 *56,500 46,200 *71,300 61,800
0.0 m 13650 10150 15550 11700 19550 14850 24100 18150 33850 25600 *29300 *29300
0' 30,100 22,400 34,300 25,800 43,100 32,700 53,100 40,000 74,700 56,500 *64,600 *64,600
–3.0 m 16100 12100 19200 14500 24650 18700 33400 25200 *46300 36800 *31900 *31900
–10' 35,500 26,700 42,300 31,900 54,400 41,200 73,700 55,500 *102,200 81,100 *70,300 *70,300
–6.1 m *21750 18350 *23650 19600 *28850 24700 *38200 *38200 *48900 *48900
–20' *48,000 40,500 *52,100 43,200 *63,600 54,400 *84,200 *84,200 *107,800 *107,800
9.1 m *9300 *9300
30' *20,500 *20,500
6.1 m *9650 *9650 *14250 13400 *15600 *15600 *17850 *17850
20' *21,300 *21,300 *31,400 29,600 *34,400 *34,400 *39,300 *39,300
3.0 m *10950 9950 *16050 12450 *18500 16050 *22250 20950 *28250 28000
10' *24,200 21,900 *35,400 27,500 *40,800 35,400 *49,000 46,200 *62,300 61,800
0.0 m 13650 10150 15550 11700 19550 14850 24100 18150 *31950 25600 *29300 *29300
0' 30,100 22,400 34,300 25,800 43,100 32,700 53,100 40,000 *70,400 56,500 *64,600 *64,600
–3.0 m 16100 12100 19200 14500 24650 18700 *31650 25200 *40550 36800 *31900 *31900
–10' 35,500 26,700 42,300 31,900 54,400 41,200 *69,800 55,500 *89,400 81,100 *70,300 *70,300
–6.1 m *18650 18350 *20300 19600 *24800 24700 *33200 *33200 *42600 *42600
–20' *41,100 40,500 *44,800 43,200 *54,700 54,400 *73,200 *73,200 *93,900 *93,900
14
PC1250-7 LIFTING CAPACITY
*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.
Unit: kg lb
PC1250-7
Equipment:
●Boom: 9.1 m 29'10"
●Arm: 3.4 m 11'2"
●Bucket: 5.0 m36.5 yd3
with Heavy Lift On
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.
Unit: kg lb
31.4MPa(Heavy Lift Off) 34.3MPa(Heavy Lift On)
PC1250-7
HYDRAULIC EXCAVATOR
15
PC1250-7
Equipment:
●Boom: 9.1 m 29'10"
●Arm: 5.7 m 18'8"
●Bucket: 3.4 m34.4 yd3
with Heavy Lift On
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
A Maximum 13.7 m 45' 12.2 m 40' 10.7 m 35' 9.1 m 30' 7.6 m 25' 6.1 m 20'
B CfCsCfCsCfCsCfCsCfCsCfCsCfCs
9.1 m *5900 *5900
30' *13,000 *13,000
6.1 m *6050 *6050 *11050 10700 *14950 14050
20' *13,400 *13,400 *24,300 23,600 *32,900 31,000
3.0 m *6800 *6800 13300 10000 16750 12850 *19800 16550 *23450 21650 *29300 29200 *39750 *39750
10' *15,000 *15,000 29,300 22,000 36,900 28,300 *43,700 36,500 *51,700 47,800 *64,600 64,400 *87,600 *87,600
0.0 m *8400 *8400 12600 9350 15650 11800 19700 15000 25450 19400 34250 25950 *31200 *31200
0' *18,500 *18,500 27,800 20,600 34,500 26,000 43,500 33,100 56,100 42,800 75,500 57,200 *68,800 *68,800
–3.0 m *11500 9900 15150 11350 18950 14250 24400 18450 33050 24850 *43900 36100
–10' *25,400 21,900 33,500 25,000 41,800 31,400 53,800 40,600 72,800 54,700 *96,800 79,600
–6.1 m 18250 13800 19350 14650 24750 18750 *33250 25350 *42300 37150
–20' 40,200 30,400 42,700 32,300 54,600 41,400 *73,300 55,900 *93,300 81,900
9.1 m *5900 *5900
30' *13000 *13000
6.1 m *6050 *6050 *11050 10700 *12700 *12700
20' *13,400 *13,400 *24,300 23,600 *28,000 *28,000
3.0 m *6800 *6800 13300 10000 *14850 12850 *17050 16550 *20300 *20300 *25550 *25550 *34850 *34850
10' *15,000 *15,000 29,300 22,000 *32,800 28,300 *37,600 36,500 *44,800 *44,800 *56,300 *56,300 *76,800 *76,800
0.0 m *8400 *8400 12600 9350 15650 11800 *19700 15000 *24000 19400 *30600 25950 *31200 *31200
0' *18,500 *18,500 27,800 20,600 34,500 26,000 *43,400 33,100 *53,000 42,800 *67,500 57,200 *68,800 *68,800
–3.0 m *11500 9900 15150 11350 18950 14250 24400 18450 *31900 24850 *41650 36100
–10' *25,400 21,900 33,500 25,000 41,800 31,400 53,800 40,600 *70,300 54,700 *91,800 79,600
–6.1 m *16550 13800 *18050 14650 *22950 18750 *28850 25350 *36900 *36900
–20' *36,500 30,400 *39,800 32,300 *50,600 41,400 *63,600 55,900 *81,300 *81,300
*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.
Unit: kg lb
31.4MPa(Heavy Lift Off) 34.3MPa(Heavy Lift On)
*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.
Unit: kg lb
31.4MPa(Heavy Lift Off) 34.3MPa(Heavy Lift On)
PC1250-7
Equipment:
●Boom: 9.1 m 29'10"
●Arm: 4.5 m 14'9"
●Bucket: 4.0 m35.2 yd3
with Heavy Lift On
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
PC1250SP-7
Equipment:
●Boom: 7.8 m 25'7"
●Arm: 3.4 m 11'2"
●Bucket: 6.7 m38.8 yd3
with Heavy Lift On
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
A
B
C
A
B
C

6425 21'1"
1585 5'2"
1222 4'1"
3470 11'5"
1830 6'
1810 5'11"
100 3.9"
1760 5'9"
2850 9'4"
845 2'9" 620 2'
400 1'4"
600 2'
3155 10'4"
880 2'11"
Work equipment assembly (Backhoe)
Weight : PC1250 : 25.1t 27.7U.S.ton
PC1250SP : 27.0t 29.8U.S.ton
Upper structure
Width : 3490 11'5"
Weight : 34t 37.5U.S.ton
Undercarriage
Weight : 30t [15t x 2]
33.1U.S.ton [16.55U.S.ton x 2]
Weight : 30.9t [15.45t x 2](with full length roller guard)
34.1U.S.ton [17.05U.S.ton x 2]
Boom
PC1250 : 11.0t : 9475 x 2894 x 1474
12.1U.S.ton : 31'1" x 9'6" x 4'10"
PC1250SP : 10.9t : 8170 x 3095 x 1474
12.0U.S.ton : 26'10" x 10'2" x 4'10"
Arm
PC1250 : 5.9t : 4895 x 1626 x 890
6.5U.S.ton : 16'1" x 5'4" x 2'11"
: 6.2t : 4895 x 1626 x 890(Heavy-duty version)
6.8U.S.ton : 16'1" x 5'4" x 2'11"
PC1250SP : 6.3t : 4914 x 1683 x 890
6.9U.S.ton : 16'1" x 5'6" x 2'11"
Bucket
PC1250 : 4.3t : 2700 x 2100 x 2050
4.7U.S.ton : 8'10" x 6'11" x 6'9"
: 5.1t : 2580 x 2276 x 2250(Heavy-duty version)
5.6U.S.ton : 8'6" x 7'6" x 7'5"
PC1250SP : 5.9t : 2527 x 2420 x 2520
6.5U.S.ton : 8'3" x 7'11" x 8'3"
Arm cylinder
1.5t
1.7U.S.ton
Boom cylinder
2.4t [1.2t x 2]
2.64U.S.ton [1.32U.S.ton x 2]
Others
Weight : 18.4t 20.3U.S.ton
Weight : 18.0t
19.8U.S.ton
6420 21'1"
3130 10'3"
TRANSPORTATION GUIDE
Transportation volume (length x height x width)
Specs shown include the following equipment:
Backhoe: boom 9100 mm 29'10", arm 3400 mm 11'2", bucket 5.0 m36.5 yd3, shoes 700 mm 28" double grouser
www.Komatsu.com Printed in Japan 200711 IP. As(05)
CEN00304-00 Materials and specifications are subject to change without notice
is a trademark of Komatsu Ltd. Japan