• World’s first cooled EGR system with bypass-assist type electronically
controlled venturi
• Offers high power and low fuel consumption, while conforming to
Tier 3 emission regulations.
• Reduces NOx emissions approximately 40%.
• Equipped with an electronically controlled variable speed fan.
●
Economy mode Four-level Setting
Enables operator to select the appropriate Economy mode level to match production
requirement with lowest fuel consumption.
● Reduction of Ambient Noise
Meets the EU Stage 2 noise regulations.
• Electronically controlled variable speed fan drive
• Large hybrid fan
• Glasswool-furnished low-noise muffler and noise reducing cover around the muffler
See page 4.
Working Environment
● Large Comfortable Cab
• Low noise and vibration with cab damper mounting
• Large-capacity air conditioner (optional)
• Pressurized cab prevents external dust from entering
• OPG top guard level 2 (by ISO 10262 standard)
capable with optional bolt-on top guard.
See page 8.
Advanced Monitor Features
• Machine condition can be checked with
Equipment Management Monitoring System
(EMMS). See page 11.
• Two working modes combine with lifting mode
for maximum productivity. See page 5.
Photo may include optional equipment.
Productivity Features
● High Work Equipment Speed
Increased arm dumping and bucket
dumping speed realize efficient loading
operation.
● Lifting Mode
The lifting mode increases the lifting force
and capacity 14%.
● Large Digging Force
Pressing the Power Max function button
temporarily increases the digging force
8%.
● Two-mode Setting for Boom
Switch selection allows either powerful
digging or smooth boom operation.
● Excellent Swing Performance is achieved by
twin-swing motor system even on slope.
● Large Drawbar Pull and Steering Force
provide excellent mobility.
See page 5.
Excellent Reliability and Durability
● Strengthened Boom and Arm
● KMAX Bucket offers superior wear-resistance for
specific use in quarry. (optional)
● Fuel Pre-filter with water separator equipped as standard
● O-ring Face Seals, which have excellent sealing
performance, are used for the hydraulic hoses.
● High-pressure In-line Filtration
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.
● Highly Reliable Electronic Devices
Exclusively designed electronic devices have passed severe testing.
• Controller • Sensors • Connectors
• Heat resistant wiring
See page 6, 7.
Easy Maintenance
● Easy Cleaning of Cooling unit
Fan reverse-rotation function facilitates
clogged radiator cleaning.
● Radiator and oil cooler are easily
detachable from full open type
engine hood.
● Centralized Arrangement of Engine
Checkpoints
● Work on Machine Anti-slip Plates for
Safe
● Large Handrail, Step and Catwalk
provide easy access to the engine
and hydraulic equipment.
See page 10.
Page 3
Work Equipment Speed Increased
An arm quick return circuit is provided for arm dumping. This
returns a portion of oil flow directly to the hydraulic tank at
arm dumping to reduce the hydraulic pressure loss.
Combined with increased bucket dumping speed, faster
loading work is realized.
Large Drawbar Pull and Steering Force
Since the machine has a large drawbar pull and a high
steering force, it demonstrates excellent mobility even when
it is being used on inclined sites.
Large Digging Force
With the addition of one-touch Power Max. function digging
force has been further increased. (8.5 seconds of operation)
Maximum arm crowd force (ISO):
228 kN (23.3t)246 kN (25.1t)
(with Power Max.)
Maximum bucket digging force (ISO):
294 kN (30.0t)317 kN (32.3t)
(with Power Max.)
Lifting Mode
When lifting mode is selected, lifting capacity increases 17%
by raising hydraulic pressure. The work equipment and
swing speeds are lowered at the same time to provide
additional control.
Two-mode Setting for 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.
54
PRODUCTIVITY & ECOLOGY FEATURES
H YDRAULIC E XCAVATOR
HYDRAULIC EXCAVATOR
PC600-8
PC600-80
Power Mode
Lifting Mode
Working ModeApplicationAdvantage
Power
● Maximum production/power
P
Mode● Fast cycle time
EEconomy
● Good cycle time
Mode● Good fuel economy
Lifting
● Hydraulic pressure is
L
Modeincreased 17%.
Hydraulics
Unique two-pump system assures smooth compound movement of the
work equipment. OLSS (Open Center Load Sensing System) controls all
pumps for efficient engine power use. This system also reduces hydraulic
loss during operation.
Power and Economy Mode
The PC600-8 excavator is equipped with two working modes. Each mode
is designed to match engine speed, pump speed, and system pressure to
the current application, giving the operator flexibility to match equipment
performance to the job at hand.
Multi-Function Color
Monitor
Working Mode Selection
Environment-friendly Clean Engine Mounted
The PC600-8, which is equipped with the Komatsu
SAA6D140E-5 engine, meets the Tier 3 emission
regulations in the North America (EPA) and EU stage 3A.
The SAA6D140E-5 engine adopts the world’s first cooled
EGR system with electronically controlled bypass-assist type
venturi to reduce NOx emission 40% , while maintaining the
high power and low fuel consumption.
Electronically Controlled Variable Speed Fan
contributes to Low Fuel
Consumption and Low Noise
The electronic control system sets the
rotational speed of the cooling fan
according to the coolant, hydraulic oil,
and ambient temperature; effectively
uses the engine output to prevent
wasteful fuel consumption; and
reduces noise during low-speed fan
rotation.
Lower and Economical Fuel Consumption Using
Economy Mode
Enables operator to set the Eco
mode to up to four levels
according to working conditions
so that production requirement is
achieved at lowest possible fuel
consumption.
Reduction of Ambient Noise
Reduced noise by adoption of an electronically controlled
variable speed fan drive, large hybrid fan, low-noise muffler
and cover with glasswool, to meet EU Stage 2 noise
regulations.
8%
UP
8%
UP
(E0,E1,E2,E3)
Komatsu Technology
Komatsu develops and produces all major
components, such as engines, electronics
and hydraulic components, in house.
With this “Komatsu Technology,” and adding
customer feedback, Komatsu is achieving
great advancements in technology.
To achieve both high levels of productivity and
economical performance, Komatsu has
developed the main components with a total
control system.
The result is a new generation of high
performance and environment friendly
excavators.
Economy Mode
This is an image photo: may
differ from the actual engine.
Boom raised
Smooth
mode
Power
mode
Hydraulic control valve
Hydraulic system
controller
Main pump
Pump for fan
Electronic control
unit for engine
LCD color monitor
Electronically controlled
variable speed fan
Engine
Heavy duty HPCR
Common Rail)
Electronically controlled cooled
EGR system
(High Pressure
system
Page 4
7
6
RELIABILITY FEATURES
H YDRAULIC E XCAVATOR
HYDRAULIC EXCAVATOR
PC600-8
PC600-80
Strengthened Quarry Bucket for Provides Outstanding Wear-resistance (optional)
The bucket for specific use in quarry is impact and wear resistant, providing high performance and long life.
Koma-hard materials* provide excellent wear resistance. Combined with adoption of long-life KMAX tooth, durability of bucket
is drastically enhanced.
Features high wear-resistance and little quality change by
the heat generated during rock loading, maintaining the
hardness for a long term.
Excellent Reliability and Durability
Strengthened Boom and Arm
Thanks to the large cross-sectional
structure employing a high tensile
strength steel with a thick plate,
partition wall, etc., the boom and arm
exhibit excellent durability and are
highly resistant to bending and
torsional stress.
Metal Guard Rings
Metal guard rings protect all the
hydraulic cylinders and improve
reliability.
Sturdy guards shield the travel motors
and piping against damage from rocks.
(Rock protectors are optional.)
Strengthened Revolving Frame
Underguard
Guards the machine body against
being hit by rocks from below and
prevents hydraulic components and
the engine from being damaged.
High-pressure In-line Filtration
The PC600-8 has the most extensive
filtration system available, providing inline filters as standard equipment. An
in-line filter in the outlet port of each
main hydraulic pump reduces failures
caused by contamination.
Track roller guard (full length)
(optional)
Partition
wall
O-ring Face Seal
The hydraulic hose seal method has
been changed from a conventional
taper seal to an O-ring seal. This
provides improved sealing performance
during operation.
Frame Structure
The revolving frame mount and center
frame mount on the swing circle are no
welding structure so that force is
transmitted directly to the thick plate of
the frame without passing through any
welding.
Fuel Pre-filter
(with Water Separator)
Removes water and contaminants from
in the fuel to enhance the fuel system
reliability.
Sturdy Undercarriage
The undercarriage is strengthened to
provide excellent reliability and
durability when working on rocky
ground or blasted rock.
Rock protectors
KMAX Tooth for Quarry Bucket
• Unique bucket tooth shape superior digging
performance
• Long-term high sharpness
• Great penetration performance
• Hammerless, safe, and easy tooth
replacement
(Tooth replacement time: Halves the
conventional machine.)
STEP 1
Observing proper safety procedures,
place tooth onto adapter (as shown).
STEP 2
Insert fastener, making sure it is in the
unlocked position (as shown).
STEP 3
Using the correct size socket, rotate the
pin locking shaft 90˚ clockwise (as
shown) to finish the installation.
STEP 4
To remove fastener, use the correct size
socket to rotate the pin locking shaft 90˚
counter-clockwise (as shown). Remove
fastener and tooth. Repeat steps 1-3 for
a new installation.
pin locking shaft
pin locking shaft
Photo may include optional equipment.
Fuel pre-filter
In-line filter
Heat-resistant Wiring
Heat-resistant wiring is utilized for the
engine electric circuit and other major
component circuit.
Circuit Breaker
With circuit breaker, the machine can
be easily restarted after repair.
DT-type connectors
DT-type connectors seal tight and
have higher reliability.
Partition
wall
Wide width arm
Arm dent
preventive plate
(optional)
Large cross-sectional
Wear plates
(optional)
structure boom
High-tensile
strength steel
High-tensile
strength steel
Quarry Bucket with KMAX Tooth
Shroud: Enlarged
High-tensile
strength steel
Koma-hard materials
High-tensile
strength steel
Page 5
89
WORKING ENVIRONMENT
H YDRAULIC E X C AVATOR
HYDRAULIC EXCAVATOR
PC600-8
PC600-80
Large Comfortable Cab
Comfortable Cab
New PC600-8’s cab offers 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 (6.0 mm Aq 0.2" 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
PC600-8 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 floor is reduced from 120 dB (VL) to 115 dB (VL).
dB (VL) is index for expressing
size of vibration.
Washable Cab Floormat
The PC600-8’s cab floormat
is easy to keep clean. The
gently inclined surface has a
flanged floormat and drainage
holes to facilitate runoff.
Photo may include optional equipment.
Photo may include optional equipment.
Skylight
Sliding Window
Multi-position Controls
The multi-position, PPC (proportional pressure 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 top guard level 2 (by ISO
10262) 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%.
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 serrated and large
handrail
Steps serrated provide anti-slip
footing for added safety.
Seat Sliding Amount: 340 mm 13.4",
increased 120 mm 4.7"
Large Handrail and Wide Catwalk
Seat with headrest
reclined full flat
Anti-Slip Plates
Defroster (optional)Cab Frame Mounted WiperBottle Holder and
Magazine Rack
Thermal Guard
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
Spring
Silicon Oil
Comparison of Riding Comfort
Conditions:
Cab Damper
Mounting
Multi-Layer
Viscous Mount
Vertical direction on graph shows size of vibration.
● Traveling over obstacle
one side track
● Traveling speed forward high
Floor Vibration
Page 6
HYDRAULIC EXCAVATOR
PC600-80
11
EASY MAINTENANCE FEATURES
H YDRAULIC E XCAVATOR
PC600-8
Komatsu Designed the PC600-8 for Easy Service Access.
Wide Catwalk and Large
Handrails
Easier, safer operator cab access and
maintenance checks.
Easy Checking and Maintenance
of Engine
Engine check points are concentrated
on one side of the machine to facilitate
daily checks. Thermal guards are
placed around high-temperature parts
such as turbocharger.
Reduced Maintenance Costs
High performance filters are
used in the hydraulic circuit
and engine. Longer hydraulic
oil, hydraulic oil filter, engine
oil and engine oil filter
element replacement intervals
significantly reduce
maintenance costs.
Electric operated Grease Gun
Equipped with Hose Reel
(Optional)
Greasing is made easy with the electric
operated grease gun and indicator.
Grease gun
Indicator
10
Photo may include optional equipment.
One-touch Drain Cock
Easier, cleaner engine oil changes.
Anti-slip Plates
Spiked plates provided on top of the
machine cab maintains anti-slip
performance for a prolonged period.
Easy Cleaning of Radiator
Reverse-rotation function of the
hydraulic driven fan facilitates cleaning
of the cooling unit.
Steps Connected to the Machine
Cab
Steps allows access from left hand
catwalk to top of machine for engine
check and maintenance.
Dust Indicator with 5-step
Indication
Informs of air cleaner
clogging in 5 steps to
warn of filter
condition.
Easy Detachable Radiator
Engine hood opens fully to facilitate
removal and installation of the radiator.
The hood can be opened vertically by
changing the position of the torsion bar.
High-Quality EMMS Self-diagnostic System
Maintenance display of the EMMS multi-color monitor (Example)
Normal displayMaintenance time displayEngine oil replacement display
Abnormal information & checking function display of the EMMS multicolor monitor (Example)
Battery charging abnormal display
Error code displayDisplay for night work
• Abnormality Checking Function
In case any abnormality should occur, the
monitoring system checks whether
hydraulic pressure, solenoid ON/OFF
status, disconnection, engine speed,
current of electricity, etc. are in the
normal conditions to keep the machine
downtime to a minimum.
• Maintenance History Memory Function
Maintenance records such as
replacement of engine oil, hydraulic oil,
filters, etc. can be stored.
• Trouble Data Memory Function
All the trouble data are stored to serve as
references for future checking and
maintenance.
Final drive, each side . . . . . . . . . . . . . . . . . . . 10 ltr2.6 U.S. gal
Swing drive . . . . . . . . . . . . . . . . . . . . . . . 2 x 13 ltr 2 x 3.4 U.S. gal
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . 360 ltr95.0 U.S. gal
OPERATING WEIGHT (APPROXIMATE)
BACKHOE
Operating weight, including 7660 mm 25'2" boom, 3500 mm 11' 6"
arm, SAE heaped 2.7 m33.53 yd3backhoe bucket, operator,
lubricant, coolant, full fuel tank, and the standard equipment.
LOADING SHOVEL
Operating weight, including 4000 mm 13'1" boom, 3000 mm 9'10"
arm, 4.0 m35.2 yd3heaped bucket, operator, lubricants, coolant, full
fuel tank and standard equipment.
*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.
Page 9
LIFTING CAPACITYLIFTING CAPACITY
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
PC600-8
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
PC600LC-8
1617
A
B
C
B
C
A
Boom : 7.3m 23’11", Arm : 3.5m 11’6", Bucket : 2.8m3 3.66cu.yd, Shoes : 600mm 24" triple, L MODE: "ON" unit: kg 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.
4.58cu.yd, Shoes : 600mm 24" triple, L MODE: "OFF" unit: kg lb
3
4.58cu.yd, Shoes : 600mm 24" triple, L MODE: "ON" unit: kg lb
Boom : 7.66m 25’2", Arm : 3.5m 11’6", Bucket : 2.7m3 3.53cu.yd, Shoes : 600mm 24" triple, L MODE: "OFF" unit: kg 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.
3.53cu.yd, Shoes : 600mm 24" triple, L MODE: "ON" unit: kg lb
3
3.66cu.yd, Shoes : 600mm 24" triple, L MODE: "OFF" unit: kg lb
Page 10
LIFTING CAPACITY
A: Reach from swing center
B: Bucket hook height
C: Lifting capacity
Cf: Rating over front
Cs: Rating over side
: Rating at maximum reach
PC600LC-8
1819
TRANSPORTATION GUIDE
Transportation specifications (length x height x width)
Backhoe
Specs shown include the following equipment:
PC600-8 : Boom 7660 mm 25'2", Arm 3500 mm 11'6",
Bucket 2.7 m33.53 yd3, Shoes 600 mm 24" triple grouser
3 Kits Transportation4 Kits Transportation
Loading Shovel
Specs shown include the following equipment:
PC600-8 : Boom 4000 mm 13'1", Arm 3000 mm 9'10",
Bucket 4.0 m35.2 yd3, Shoes 600 mm 24" double grouser
3 Kits Transportation
A
B
C
Boom : 7.3m 23’11", Arm : 3.5m 11’6", Bucket : 2.8m3 3.66cu.yd, Shoes : 600mm 24" triple, L MODE: "ON" unit: kg 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.
4.58cu.yd, Shoes : 600mm 24" triple, L MODE: "OFF" unit: kg lb
3
4.58cu.yd, Shoes : 600mm 24" triple, L MODE: "ON" unit: kg lb
Work equipment assembly (Backhoe)
Weight : 12.2 t 13.5 U.S.ton
CEN00050-02Materials and specifications are subject to change without notice.
is a trademark of Komatsu Ltd. Japan.
Printed in Japan 200809 IP.As(05)
STANDARD EQUIPMENT
ENGINE AND RELATED ITEMS:
● Air cleaner, double element, dry
● Engine, Komatsu SAA6D140E-5
● Variable speed cooling fan, with fan guard
ELECTRICAL SYSTEM:
● Alternator, 50 amp, 24 V
● Batteries, 170 Ah, 2 x 12 V
● Starting motors, 11kW
● Working lights 2 (boom and RH)
● Auto decelerator
UNDERCARRIAGE:
● 600 mm 24'' triple grouser
● 8 track/3 carrier rollers (each side)
● 9 track/3 carrier rollers (each side)(LC)
● Hydraulic track adjusters (each side)
● Variable track gauge
● Sealed track
GUARDS AND COVERS:
● Dust-proof net for radiator and oil cooler
● Pump/engine room partition cover
● Travel motor guards
● Strengthened revolving frame underguard
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
● Multi-function color monitor, fuel control dials, service meter, gauges
(coolant temperature, hydraulic oil 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 and engine oil level), self-diagnostic system
with trouble data memory
● Seat, fully adjustable with suspension
● Cab with pull-up type front window
● Rear view mirror (RH)
HYDRAULIC CONTROLS:
● Fully hydraulic, with Open-Center Load-Sensing (OLSS) 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
● Two variable capacity piston pumps
● Control valves, 5+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
● Hydrostatic two travel speed system with planetary triple reduction
final drive
OTHER STANDARD EQUIPMENT:
● Automatic swing holding brake
● Corrosion resister
● Counterweight, 10750 kg 23,700 lb
● Horn, electric
● Marks and plates, English
● Paint, Komatsu standard
● Large handrails
● One-touch engine oil drainage
● PM tune-up service connector
● Travel alarm
● Rear reflector
● Anti-slip plates
OPTIONAL EQUIPMENT
● Alternator, 75 Amp, 24 V
● Arms (Backhoe):
PC600-8:
—3500 mm 11'6'' arm assembly
—3500 mm 11'6'' HD arm assembly
—4300 mm 14'1'' arm assembly
—5200 mm 17'1'' arm assembly
—2900 mm 9'6'' SE arm assembly
● Auto air conditioner
● Automatic greasing
● Booms (Backhoe):
—7660 mm 25'2'' boom assembly
—7300 mm 23'11'' HD boom assembly
—6600 mm 21'8'' SE boom assembly
● Cab front guard (ISO 10262 level 2)
● Cab with fixed front window
● Catwalk
● Counterweight 13500kg 29,800 lb
● 12V electric supply
● Fire extinguisher
● Full length track guard
● General tool kit
● Grease gun, electric operated, with indicator
● Interconnected horn and warning light
● Large-capacity batteries
● Loading shovel attachments
● Lower wiper
● OPG top guard
● Radio AM/FM
● Rain visor
● Rear view mirror (LH)
● Seat belt 78 mm 3'', 50 mm 2''
● Shoes:
—600 mm 24'' double grouser for backhoe
—750 mm 29.5'' triple grouser for backhoe
—900 mm 35.5'' triple grouser for
PC600LC backhoe only
● Spare parts for first service
● Step light with timer
● Sun visor
● Track frame undercover (center)
● Vandalism protection locks
● Working lights 2 (on cab)
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