Komatsu PC450-7 User manual

FLYWHEEL HORSEPOWER
246 kW 330 HP @ 1850 rpm
OPERATING WEIGHT
PC450-7: 43000 – 43420 kg
94,800 – 95,720 lb
PC450LC-7: 44000 – 44450 kg
97,000 – 97,990 lb
PC450-7
PC450LC-7
PC
450
Photo may include optional equipment.
HYDRAULIC EXCAVATOR

3
FLYWHEEL HORSEPOWER
246 kW 330 HP @ 1850 rpm
OPERATING WEIGHT
PC450-7: 43000 – 43420 kg
94,800 – 95,720 lb
PC450LC-7: 44000 – 44450 kg
97,000 – 97,990 lb
BUCKET CAPACITY
1.9 - 2.1 m3
2.49 – 2.75 yd3
Photo may include optional equipment.
2
Easy Maintenance
●Replacement interval is extended for
engine oil, engine oil filter and
hydraulic filter.
●Easy removal and installation of the
radiator and oil cooler
●Fuel tank capacity is increased.
●New bushing design on work
equipment extend lubricating interval.
●Easy access for engine inspection
●High-capacity air cleaner
See pages 8 and 9
Harmony with Environment
●Low emission engine
Powerful turbocharged and aftercooled Komatsu SAA6D125E-3 engine
provides 246 kW 330 HP.
●Economy mode saves fuel consumption (reduced by approx. 20%).
●Low operation noise
●Designed for optimal use of recyclable materials
Large Comfortable Cab
New PC450-7’s cab volume is increased by 14%,
offering an exceptionally roomy operating environment
●Highly pressurized cab with optional air conditioner
●Low noise design
●Low vibration with cab damper mounting
●OPG capable with optional bolt-on top guard
OPG (Operator Protective Guards) top guard level 2 by ISO 10262 (formerly FOG)
See page 6 and 7
●High Production and
Low Fuel Consumption
Production is increased during Active
mode while fuel efficiency is improved.
●Low Fuel Consumption and High
Output Engine
A powerful turbocharged and air to air
aftercooled Komatsu SAA6D125E provides
246 kW 330 HP.
Low fuel consumption is achieved by
adopting an electronic controlled fuel
injection system.
●Large Digging Force
Arm crowd force is increased 8% and
bucket digging force is increased 10%
when the Power Max function is applied.
(compared with PC450-6).
●Two-mode Setting for Boom
Switch selection allows either powerful
digging or smooth boom operation.
See page 4 and 5
Productivity Features
WALK-AROUND
HYDRAULIC EXCAVATOR HYDRAULIC EXCAVATOR
PC450-7 PC450-7
Quarry Bucket
Heavy-Duty Arm
Heavy-Duty Boom
Quarry Cab
Strengthened
Revolving Frame
with Deck Guard
Full Roller Guards and
Double-Flange Track Rollers
Variable Track Gauge (optional)
●Greatly increases lateral stability
●Compliant with transportation regulations
See page 5
●Excellent Machine Stability
Machine stability and balance is improved by a
new design counterweight.
●Higher Lifting Capacity
PC450-7’s lateral stability is improved and lifting
capacity is increased.
See page 5
Reduced revolving frame damage
●Clearance between the revolving frame and
track increased by 30%.
See page 5

Production (index)
Active mode
PC450-6
Active mode
PC450-7
100 108
Fuel consumption (index)
Active mode
PC450-6
Active mode
PC450-7
100 90
Fuel efficiency (index)
Active mode
PC450-6
Active mode
PC450-7
100 120
8% better 20% better
(Comparison with current model)
Production (index)
Active mode
PC450-6
Economy mode
PC450-7
100 97
Fuel consumption (index)
Active mode
PC450-6
Economy mode
PC450-7
100 81
Fuel efficiency (index)
Active mode
PC450-6
Economy mode
PC450-7
100 120
20% better
(Comparison with current model)
Low fuel consumption
10% better
19% better
Improved lateral stability is achieved by increasing the
counterweight (330kg 730lb) and improving the balance of
the machine body.
Lateral Stability PC450
PC450LC
Large Lifting Capacity
PC450-7’s improved lateral stability increases lifting capacity.
Variable Track Gauge (optional)
●Lateral stability is significantly improved when
operating with the gauge extended.
●Lateral stability is increased by 30% (compared with
the fixed gauge of the current model).
●Complies with transportation regulations by retracting
the gauge.
5
High production and low fuel consumption are
achieved through the following two operation
modes:
Active mode, with maximum engine output to handle large
production, while keeping fuel consumption low; and Eco
mode for light duty applications, which enables operation
at a speed comparable to Active mode with even lower fuel
consumption. The two modes, Active mode for handling
“large production” and Eco mode for “low fuel consumption”
have been significantly improved.
ACTIVE MODE
This mode handles large production by providing powerful
and speedy operation, and achieves economical efficiency by
substantial reduction of fuel consumption.
ECONOMY MODE
Operation speed equal to that of the Active mode can be
achieved when handling light duty operation while also
keeping fuel consumption low.
Electronically Controlled High Power Engine Installed
A 246kW (330HP) Komatsu SAA6D125E engine, is the
largest in its class.
High power and low fuel consumption are achieved by
optimizing fuel injection via electronic control.
Maximum Digging Force among the 40-ton Class
With the addition of a one-touch power max. function
(operation time of 8.5 seconds), the digging force has been
further increased.
Maximum arm crowd force (ISO):
217 kN (22.1t) 233 kN (23.8t)
Maximum bucket digging force (ISO):
253 kN (25.8t) 278 kN (28.3t)
High Production and Low
Fuel Consumption
4
Substantially Improved
Stability
Smooth Loading Operation
Two return hoses improve hydraulic
performance. In the arm out
function, a portion of the oil is
efficiently returned to the tank .
Boom floats upward, reducing
lifting of machine front. This
facilitates gathering blasted
rock and scraping down
operations.
Boom pushing force is
increased, ditch digging and
box digging operation on hard
ground are improved.
PRODUCTIVITY FEATURES
HYDRAULIC EXCAVATOR HYDRAULIC EXCAVATOR
PC450-7 PC450-7
Two Boom Settings
Smooth mode provides easy operation for gathering blasted
rock or scraping down operation. When maximum digging
force is needed, switch to Power mode for more effective
excavating.
*(comparison with current model)
better*
10%
Reduced Revolving Frame Damage
Damage to the revolving frame when going over rocks is
reduced by increasing the clearance between the revolving
frame and track
*(comparison with current model)
Two return hoses
Power mode
Smooth mode
(with Power Max.)
(with Power Max.)
Photo may include optional equipment.
better*
8%
better*
10%
better*
22%
clearance:
approx. 200mm (7.9")
30% increased

7
Large Comfortable Cab
6
Photo may include optional equipment. Photo may include optional equipment.
Comfortable Cab
New PC450-7’s cab volume is increased by 14%, offering an
exceptionally comfortable operating environment. The large
cab enables full flat reclining of the seat back with headrest.
Pressurized Cab
The optional air conditioner, air filter and a higher internal air
pressure (10 mm Aq 0.39" in Aq) prevent external dust
from entering the cab.
Low Noise Design
Noise level is remarkably reduced, not only engine noise but
also swing and hydraulic relief noise.
Low Vibration with Cab Damper Mounting
PC450-7 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 floor is reduced from 120 dB (VL) to 115 dB (VL).
dB (VL) is index for expressing
size of vibration.
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 control levers to move
together or independently, allowing the operator
to position the controls for maximum
productivity and comfort.
Safety Features
Cab
OPG (FOG) capable with
optional bolt-on top guard.
Wide Visibility
The right side window pillar has
been removed and the rear pillar
reshaped to provide better
visibility. Blind spots have been
decreased by 34%.
Fixed One-piece Laminated
Front Window Glass
Front window is fixed and uses
laminated safety glass to prevent
scattering of glass fragments
when broken.
Pump/engine room partition
prevents oil from spraying on
the engine if a hydraulic hose
should burst.
Thermal and fan guards are
placed around high-temperature
parts of the engine and fan
drive.
Steps with non-skid sheet
and large handrail provide anti-
slip footing for added safety.
Seat Sliding Amount: 340 mm 13.4",
increased 120 mm 4.7"
Large Handrail
Seat with headrest
reclined full flat
Non-skid Sheet
Defroster (optional) Cab Frame Mounted Wiper Bottle Holder and
Magazine Rack
Thermal Guard
WORKING ENVIRONMENT
HYDRAULIC EXCAVATOR HYDRAULIC EXCAVATOR
PC450-7 PC450-7
The cab interior is spacious and provides a
comfortable working environment…
Automatic Air Conditioner (optional)
A 6,900 kcal 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.
Rubber
Silicon Oil
Spring
Cab Damper
Mounting
Multi-Layer
Viscous Mount Floor Vibration
Comparison of Riding Comfort
Conditions:
●Traveling over obstacle
one side track
●Traveling speed forward high
Vertical direction on graph shows size of vibration.
Washable Cab Floormat
The PC450-7’s cab floormat
is easy to keep clean. The
gently inclined surface has a
flanged floormat and drainage
holes to facilitate runoff.
Sun Shade
Fixed Skylight Skylight
Sliding
Window

98
Easy removal and installation of
the radiator (side-by-side
cooling)
Removal and installation of the radiator
and oil cooler are made easier by
locating them side-by-side.
Easy Access for Engine Inspection
The engine oil check pipe, oil filler, and
oil filter, etc., are located on the left
side of the engine.
High-Capacity Air Cleaner
High capacity air cleaner is comparable
to that of larger machine.
The air cleaner can extend air cleaner
life during long-term operation and
prevents early clogging and resulting
power decrease. Reliability is
improved by a new seal design.
HYDRAULIC EXCAVATOR
MAINTENANCE FEATURES
HYDRAULIC EXCAVATOR
PC450-7 PC450-7
Fuel Tank Capacity Increased
Fuel tank capacity is increased from 605 ltr 160 U.S. gal
to 650 ltr 172 U.S. gal to extend operating hours before
refueling. The fuel tank is treated for rust prevention and
improved corrosion resistance.
Easy Maintenance
Quarry Hydraulic Excavator
The PC450-7 is a specially designed for heavy-duty
applications. The PC450-7 has strengthened work equipment
and reinforced body parts for use in severe job sites such as
quarry and gravel gathering, etc.
Cab with two-piece
pull-up window
(optional)
Fixed one-piece
laminated front
window glass
The front window is
fixed and uses
laminated safety glass
to prevent scattering of
glass fragments when
broken.
Fixed Skylight and Sunshade
Heavy-Duty Boom
Heavy-Duty
Arm
Dent Preventing
Plates Plate length
increased 37%
Deck Guard
Strengthened Revolving
Frame Underguard
Full Roller Guard
Quarry Bucket
PC450-7 bucket is designed exclusively for quarry use and is
higher strength for impact and wear. Various parts of work
equipment are also strengthened.
Side Shrouds Lip
Shrouds
Side Reinforcement plate
16 mm 0.63” thickness high-
tensile strength steel used
O-Ring Added
O-ring is added between
bucket and linkage to prevent
entrance of dirt
Corner Tooth
Adapter
Double-Flange Track Roller
Double-flange rollers guide track link
correctly and extends life of undercarriage.
Number of double-flange track rollers
PC450-7 . . . . . . . . . . . . .3 each side
PC450LC-7 . . . . . . . . . . .4 each side
Bottom Wear Plate
19 mm 0.75” thickness high-
tensile strength steel used
Photo may include optional equipment.
Photo may include optional equipment.
Multi-Function Color Monitor
PC450-7 PC450-6
Engine oil 500 250
Engine oil filter 500 250
Hydraulic oil 5,000 5,000
Hydraulic oil filter 1,000 500
A newly developed Multi-Function Color Monitor has multiple
functions, such as Working mode selection, hydraulic pump
oil flow adjustment for matching to attachment, and
maintenance interval notice, etc.
EMMS (Equipment Management Monitoring System)
Monitor Function
Controller monitors engine oil level,
coolant level, engine oil pressure,
coolant temperature, battery charge
and air cleaner clogging, etc. If the
controller finds any abnormality,
it is displayed on the LCD.
Maintenance Function
Monitor informs replacement time
of oil and filters on LCD when the
replacement interval is reached.
Trouble Data Memory Function
Monitor stores error codes for effective troubleshooting.
●Hydraulic Oil and Filter/Engine Oil and Filter
Replacement Interval Extended
The new high performance filters are
used in hydraulic circuit and engine.
Hydraulic oil filter, engine oil, and
engine oil filter element replacement
intervals are significantly extended to
reduce maintenance costs.
Comparison of Replacement Intervals unit: hours
Reducing Maintenance Costs
Work Equipment Lubrication Intervals Are
Extended with OMRF Bushings
The lubrication interval is greatly extended by using BMRC
bushings on the boom foot and boom cylinder, OMRF bushing
on the other work equipment, and CRHF on the arm end face.
Also, resin shims are applied to prevent friction sound between
end faces at the work equipment pin bracket.
PC450-7 PC450-6
Bucket pin bushings 250 50
Boom foot and boom
cylinder bottom bushings 500 50
Other bushings 500 100
Work equipment lubrication interval unit: hours
BMRC (Bata Matrix
Reinforced Copper Alloy)
CRHF (Carbide Reinforced
Hard facing Ferrous Alloy)
OMRF (Orderd Matrix
Reinforced Ferrous Alloy)
Resin shim
New hydraulic oil filter

PC450-7 PC450LC-7
Operating Ground Operating Ground
Shoes Weight Pressure Weight Pressure
600 mm 43000 kg 81.4 kPa 44000 kg 77.5 kPa
0.83 kgf/cm20.79 kgf/cm2
23.6" 94,800 lb 11.8 psi 97,000 lb 11.2 psi
700 mm 43420 kg 69.6 kPa 44450 kg 66.7 kPa
0.71 kgf/cm20.68 kgf/cm2
27.6" 95,720 lb 10.1 psi 97,990 lb 9.67 psi
10 11
HYDRAULIC EXCAVATOR
SPECIFICATIONS
HYDRAULIC EXCAVATOR
PC450-7 PC450-7
WORKING RANGE
DIMENSIONS
BACKHOE BUCKET, ARM, AND BOOM COMBINATION
Arm length 3380 mm 11'1"
PC450-7 PC450LC-7
A Overall length 12040 mm 39'6" 12040 mm 39'6"
B Length on ground 6540 mm 21'5" 6705 mm 22'0"
C Overall height (to top of boom) 3660 mm 12'0" 3660 mm 12'0"
D Overall width 3340 mm 11'0" 3340 mm 11'0"
E Overall height (to top of cab) 3265 mm 10'9" 3265 mm 10'9"
F Ground clearance, counterweight 1320 mm 4'4" 1320 mm 4'4"
G Ground clearance (minimum) 555 mm 1'10" 550 mm 1'10"
H Tail swing radius 3645 mm 12'0" 3645 mm 12'0"
I Track length on ground 4020 mm 13'2" 4350 mm 14'3"
J Track length 5025 mm 16'6" 5355 mm 17'7"
K Track gauge 2740 mm 9'0" 2740 mm 9'0"
L Width of crawler 3340 mm 11'0" 3340 mm 11'0"
M Shoe width 600 mm 23.6" 600 mm 23.6''
N Grouser height 37 mm 1.5" 37 mm 1.5"
O Machine cab height 2715 mm 8'11" 2715 mm 8'11"
P Machine cab width 3145 mm 10'4" 3145 mm 10'4"
Q Distance, swing center to rear end 3605 mm11'10" 3605 mm 11'10"
Arm length 3380 mm 11 ' 1 "
A Max. digging height 10925 mm 35'10"
B Max. dumping height 7625 mm 25' 0"
C Max. digging depth 7790 mm 25' 7"
D Max. vertical wall digging depth 6600 mm 21'8"
E Max. digging depth of cut for 8' level 7650 mm 25'1"
F Max. digging reach 12005 mm 39'5"
G Max. digging reach at ground level 11800 mm 38'9"
H Min. swing radius 4805 mm 15'9"
SAE Bucket digging force at power max. 243 kN/24800 kgf/54,670 lb
rating Arm crowd force at power max 225 kN/22900 kgf/50,490 lb
ISO Bucket digging force at power max. 278 kN/28300 kgf/62,390 lb
rating Arm crowd force at power max. 233 kN/23800 kgf/52,470 lb
General purpose use, material density up to 1.8 ton/m31.52 U.S. ton/yd3
* Quarry bucket
Bucket Capacity Width Weight Number Arm Length
(heaped)
of Teeth
3.38 m
SAE, PCSA CECE With Side Shrouds Without Side Shrouds With Side Shrouds 11'1"
*1.90 m32.49 yd31.70 m32.22 yd31625 mm 64.0" — 1966 kg 4,330 lb 5 
*2.10 m32.75 yd31.90 m32.49 yd31745 mm 68.7" — 2035 kg 4,490 lb 5 
012345678910111213
(m)
(m)
12
11
10
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
H
B
A
D
CE
G.L
G
F
2440 8'
OPTIONAL EQUIPMENT
• Additional fuel filter with water separator
• Air conditioner with defroster, hot & cool box
• Alternator, 50 ampere, 24 v
• Arm, 3380 mm 11'1" arm assembly,
heavy-duty
• Batteries, 140 Ah/2 x 12 V
• Bolt-on top guard (Operator Protective
Guards level 2 (FOG))
• Boom, 7060 mm 23'3", heavy-duty
• Cab accessories
—Rain visor
—Sun visor
• Cab front guard
—Full height guard
—Half height guard
• Cab with 2-piece pull up front window
• Corrosion resistor
• Heater with defroster
• Rearview mirror (LH)
• Seat belt, retractable
• Seat, suspension
• Service valve
• Track frame undercover
• Travel alarm
• Working lights, 2 on cab
• Variable gauge track frame
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D125E-3
Type . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle, direct injection
Aspiration. . . . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 mm 4.92"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mm 5.91"
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . 11.04 ltr 674 in3
Flywheel horsepower:
ISO 9249 / SAE J1349. . . . . . . . . . . . . . . . Gross 259 kW 347 HP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Net 246 kW 330 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1850 rpm
Governor . . . . . . . . . . . . . . . . . . . . . . . . All-speed control, electronic
HYDRAULICS
Type . . HydrauMind (Hydraulic Mechanical Intelligence New Design)
system, closed-center system with load sensing valves and
pressure compensated valves
Number of selectable working modes . . . . . . . . . . . . . . . . . . . . . . . 4
Main pump:
Type . . . . . . . . . . . . . . . . . . . . . Variable displacement piston type
Pumps for . . . . . . . . Boom, arm, bucket, swing, and travel circuits
Maximum flow . . . . . . . . . . . . . . . . . 690 ltr/min 182 U.S. gal/min
Supply for control circuit . . . . . . . . . . . . . . . . . Self-reducing valve
Hydraulic motors:
Travel. . . . . . . . . . . . . . . 2 x axial piston motor with parking brake
Swing . . . . . . . . . . 1 x axial piston motor with swing holding brake
Relief valve setting:
Implement circuits. . . . . . . . . . . . 37.3 MPa 380 kgf/cm25,400 psi
Travel circuit . . . . . . . . . . . . . . . . 37.3 MPa 380 kgf/cm25,400 psi
Swing circuit . . . . . . . . . . . . . . . . 27.9 MPa 285 kgf/cm24,050 psi
Pilot circuit. . . . . . . . . . . . . . . . . . . . . 3.2 MPa 33 kgf/cm2470 psi
Hydraulic cylinders:
(Number of cylinders – bore x stroke x rod diameter)
Boom . . . . . 2– 160 mm x 1570 mm x 110 mm 6.3" x 61.8" x 4.3"
Arm . . . . . . 1 – 185 mm x 1985 mm x 130 mm 7.3" x 78.1" x 5.1"
Bucket:. . . . 1 –160 mm x 1270 mm x 110 mm 6.3" x 50.0" x 4.3"
OPERATING WEIGHT (APPROXIMATE)
Operating weight including 7060 mm 23'2" one-piece boom,
3380 mm 11'1" arm, SAE heaped 1.9 m32.49 yd3bucket, rated
capacity of lubricants, coolant, full fuel tank, operator, and standard
equipment.
DRIVES AND BRAKES
Steering control . . . . . . . . . . . . . . . . . . . . . . . Two levers with pedals
Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic
Maximum drawbar pull . . . . . . . . . . . . . 329 kN 33510 kgf 73,880 lb
Gradeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70%, 35°
Maximum travel speed (Auto-Shift): . . . . . . . . . . . . . . . . . . . . . . . . .
High . . . . . . . . . . . . . . . . . 5.5 km/h 3.4 mph
Mid. . . . . . . . . . . . . . . . . . 4.4 km/h 2.7 mph
Low . . . . . . . . . . . . . . . . . 3.0 km/h 1.9 mph
Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock
Parking brake. . . . . . . . . . . . . . . . . . . . . . . . . Mechanical disc brake
SWING SYSTEM
Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic
Swing reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Swing circle lubrication . . . . . . . . . . . . . . . . . . . . . . . Grease-bathed
Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock
Holding brake/Swing lock . . . . . . . . . . . . . . . . Mechanical disc brake
Swing speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 rpm
UNDERCARRIAGE
Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-frame
Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section
Seal of track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed track
Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
Number of shoes (each side):
PC450-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
PC450LC-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Number of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . 2 each side
Number of track rollers (each side):
PC450-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PC450LC-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
COOLANT AND LUBRICANT
CAPACITY (REFILLING)
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 ltr 172 U.S. gal
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 ltr 9.0 U.S. gal
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.0 ltr 10.0 U.S. gal
Final drive, each side . . . . . . . . . . . . . . . . . . . . . 12.0 ltr 3.2 U.S. gal
Swing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.2 ltr 4.3 U.S. gal
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . . . . 248 ltr 65.5 U.S. gal
STANDARD EQUIPMENT
•Alternator, 35 Ampere, 24V
• Auto-Decel
• Automatic engine warm-up system
• Automatic de-airation system for fuel line
•Batteries, 110 Ah/2 x 12V
• Boom holding valve
• Cab capable FOG with optional bolt-on
top guard
• Counterweight, 9220kg 20,330lb
•Dry type air cleaner, double element
• Electric horn
•Engine, Komatsu SAA6D125E
• Engine overheat prevention system
•Fan guard structure
•Hydraulic track adjusters (each side)
•Long lubricating interval bushings for
work equipment
• Monitor panel, color multi-function
• Power maximizing system
•PPC hydraulic control system
• Radiator & oil cooler dust proof net
• Rear view mirror, R.H.
•Starting motor, 7.5 kW
• Suction fan
•Track guiding guard, full guard
• Track roller
—PC450-7, 7 each side
—PC450LC-7, 8 each side
• Track shoe
—PC450-7, 600 mm 23.6" triple grouser
—PC450LC-7, 600 mm 23.6" triple grouser
• Two settings for boom
•Working light, 2 (boom and RH)
• Working mode selection system
A
H,Q
D,L
K
M
G
E
I
J
N
F
O
B
C
P

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CEN00299-01 Materials and specifications are subject to change without notice.
is a trademark of Komatsu Ltd. Japan.
Printed in Japan 200904 IP.As(05)
LIFTING CAPACITY WITH LIFTING MODE
PC450-7 Arm: 3380 mm 11'1" Bucket: 1.9 m32.49 yd3SAE heaped Shoe: 600 mm 23.6" triple grouser
AMAX 9.0m 29’ 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'
BCf Cs Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs
7.5m *5550 kg *5550 kg *6600 kg 5900 kg
24' *12100 lb *12100 lb *14500 lb 12900 lb
6.0m *5550 kg 4750 kg *8800 kg 5850 kg *9600 kg 8400 kg
19' *12100 lb 10400 lb *19300 lb 12900 lb *21100 lb 18500 lb
4.5m *5750 kg 4200 kg 8750 kg 5700 kg *10650 kg 8050 kg *12800 kg 11850 kg
14' *12600 lb 9200 lb 19300 lb 12500 lb *23400 lb 17600 lb *28100 lb 26000 lb
3.0m *6100 kg 3900 kg 8500 kg 5450 kg 11700 kg 7600 kg *14800 kg 10950 kg *20800 kg 17200 kg
9' *13400 lb 8500 lb 18700 lb 12000 lb 25700 lb 16600 lb *32600 lb 24100 lb *45800 lb 37800 lb
1.5m 6200 kg 3800 kg 8250 kg 5250 kg 11200 kg 7150 kg 16150 kg 10200 kg *23400 kg 15700 kg
4' 13600 lb 8300 lb 18100 lb 11400 lb 24600 lb 15700 lb 35500 lb 22400 lb *51500 lb 34600 lb
0.0m 6350 kg 3900 kg 8050 kg 5050 kg 10850 kg 6850 kg 15600 kg 9650 kg *23050 kg 15050 kg
0' 13900 lb 8500 lb 17700 lb 11000 lb 23800 lb 15000 lb 34300 lb 21200 lb *50700 lb 33100 lb
-1.5m 6800 kg 4200 kg 7950 kg 4950 kg 10650 kg 6650 kg 15300 kg 9450 kg *23000 kg 14900 kg *15050 kg *15050 kg
-4' 14900 lb 9100 lb 17400 lb 10800 lb 23400 lb 14600 lb 33700 lb 20700 lb *50700 lb 32800 lb *33100 lb *33100 lb
-3.0m 7700 kg 4800 kg 7950 kg 4950 kg 10650 kg 6650 kg 15300 kg 9450 kg *21050 kg 15050 kg *22200 kg *22200 kg
-9' 16900 lb 10500 lb 17500 lb 10900 lb 23400 lb 14500 lb 33700 lb 20700 lb *46400 lb 33100 lb *48800 lb *48800 lb
-4.5m *8900 kg 6000 kg *10450 kg 6800 kg *13800 kg 9650 kg *17850 kg 15450 kg *23300 kg *23300 kg
-14' *19600 lb 13100 lb *23000 lb 14900 lb *30400 lb 21200 lb *39300 lb 34000 lb *51200 lb *51200 lb
-6.0m *8000 kg *8000 kg *9350 kg *9350 kg *12650 kg *12650 kg
-19' *17600 lb *17600 lb *20500 lb *20500 lb *27900 lb *27900 lb
*Load is limited by hydraulic capacity rather than tipping. Ratings are based on SAE Standard No. J1097. Rated loads do not exceed 87% of hydraulic lift capacity or 75% of tipping load.
PC450LC-7 Arm: 3380 mm 11'1" Bucket: 1.9 m32.49 yd3SAE heaped Shoe: 600 mm 23.6" triple grouser
AMAX 9.0m 29’ 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'
BCf Cs Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs
7.5 m *5550 kg *5550 kg *6600 kg 6000 kg
24' *12100 lb *12100 lb *14500 lb 13200 lb
6.0m *5550 kg 4850 kg *8800 kg 6000 kg *9600 kg 8550 kg
19' *12100 lb 10600 lb *19300 lb 13100 lb *21100 lb 18800 lb
4.5m * 5750 kg 4300 kg *9300 kg 5800 kg *10650 kg 8200 kg *12800 kg 12000 kg
14' *12600 lb 9400 lb *20400 lb 12700 lb *23400 lb 17900 lb *28100 lb 26400 lb
3.0m *6100 kg 4000 kg 9650 kg 5550 kg *11750 kg 7700 kg *14800 kg 11150 kg *20800 kg 17450 kg
9' 13400 lb 8700 lb 21200 lb 12200 lb *25800 lb 16900 lb *32600 lb 24500 lb *45800 lb 38400 lb
1.5m *6700 kg 3900 kg 9400 kg 5350 kg *12700 kg 7300 kg *16450 kg 10350 kg *23400 kg 16000 kg
4' *14700 lb 8500 lb 20700 lb 11700 lb *27900 lb 16000 lb *36100 lb 22800 lb *51500 lb 35100 lb
0.0m 7250 kg 4000 kg 9200 kg 5150 kg 12400 kg 6950 kg *17250 kg 9850 kg *23050 kg 15350 kg
0' 15900 lb 8700 lb 20200 lb 11300 lb 27300 lb 15300 lb *37900 lb 21600 lb *50700 lb 33700 lb
-1.5m 7750 kg 4300 kg 9100 kg 5050 kg 12200 kg 6800 kg *17100 kg 9600 kg *23000 kg 15200 kg *15050 kg *15050 kg
-4' 17100 lb 9300 lb 19900 lb 11000 lb 26800 lb 14900 lb *37600 lb 21100 lb *50700 lb 33400 lb *33100 lb *33100 lb
-3.0m 8800 kg 4900 kg 9100 kg 5050 kg 12200 kg 6750 kg *16050 kg 9600 kg *21050 kg 15350 kg *22200 kg *22200 kg
-9' 19300 lb 10700 lb 20000 lb 11100 lb 26800 lb 14800 lb *35300 lb 21100 lb *46400 lb 33700 lb *48800 lb *48800 lb
-4.5m *8900 kg 6100 kg *10450 kg 6950 kg *13800 kg 9800 kg *17850 kg 15700 kg *23300 kg *23300 kg
-14' *19600 lb 13400 lb *23000 lb 15200 lb *30400 lb 21600 lb *39300 lb 34600 lb *51200 lb *51200 lb
-6.0m *8000 kg *8000 kg *9350 kg *9350 kg *12650 kg *12650 kg
-19' *17600 lb *17600 lb *20500 lb *20500 lb *27900 lb *27900 lb
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