7
6
R
ELIABILITY
F
EATURES
HYDRAULIC EXCAVATOR
PC600
-8R
0
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.
* Koma-hard materials (KVX materials):
Komatsu developed, wear-resistant, reinforced materials.
Brinell hardness: 500 or more (180kgf/mm
2
class).
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.
Heat-resistant Wiring
Heat-resistant wiring is utilized for the
engine electric circuit and other major
component circuit
Fuel Main-filter
The reliability of fuel systems is
improved, because fuel main-filter
additionally installed removes
contamination and sludge contained in
fuel.
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 PC600-8R 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.
Track roller guard (full length)
(optional)
Partition
wall
Partition
wall
Wide width arm
Arm dent
preventive plate
(optional)
Large cross-sectional
structure boom
Wear plates
(optional)
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
Quarry Bucket with KMAX Tooth
High-tensile
strength steel
High-tensile
strength steel
High-tensile
strength steel
Shroud: Enlarged
High-tensile
strength steel
Koma-hard materials
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.
In-line filter
H
Y D R A U L I C
E
X C A V A T O R
PC600
-8R
Water Separator
Removes water from the fuel and
improves the reliability of fuel systems.
