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RELIABILITY FEATURES
HYDRAULIC EXCAVATOR
PC800-80
Strengthened Quarry Bucket Provides Outstanding Wear-resistance (optional for PC800SE-8)
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 teeth, 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
from the heat generated during rock loading, maintaining
long term hardness.
Excellent Reliability and Durability
Boom Foot Hoses
The boom foot hoses are arranged
under the boom foot to reduce hose
bend during operation, extending hose
life and improving operator safety.
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.
High-pressure In-line Filtration
The PC800-8 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)
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.
Fuel Pre-filter
(with Water Separator)
Removes water and contaminants
from 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.
KMAX Tooth
• 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 is PC850-8.
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.
Rock protectors
Photo may include optional equipment.
H YDRAULIC E XCAVATOR
PC800-8
Metal guard ring
(Cast iron ring)
Piston ring
Wear ring
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