Komatsu PC300-7 Brochure page 3

PC300-7
H
Y D R A U L I C
P
RODUCTIVITY
High Production and Low
Fuel Consumption
The increased output and fuel savings of the Komatsu
SAA6D114E engine result in increased production and
improved production per unit of fuel.
Engine
The PC300-7 gets its exceptional power and work capacity
from a Komatsu SAA6D114E engine. Output is 180 kW
242 HP, providing increased hydraulic power and improved
fuel efficiency.
Hydraulics
Unique two-pump system ensures smooth compound
movement of the work equipment. HydrauMind controls
both pumps for efficient engine power use. This system
also reduces hydraulic loss during operation.
Three Working Modes
Working Mode Selection
The PC300-7 excavator is equipped with three working
modes (A, E and B mode). Each mode is designed to match
engine speed, pump speed, and system pressure with the
current application. This provides the flexibility to match
equipment performance to the job at hand.
Working Mode Application Advantage
Maximum production/power
A Active mode
Fast cycle times
E Economy mode Excellent fuel economy
Breaker Optimum engine rpm,
B
operation hydraulic flow
4
E
X C A V A T O R
F
EATURES
Large Lifting Capacity
PC300-7's lateral stability is improved resulting in increased
lifting capacity.
Larger Maximum Drawbar Pull
PC300-7's maximum drawbar pull is increased by 17% and
provides superb steering and slope climbing performance.
Maximum drawbar pull: 264 kN 26900 kgf 59,300 lb.
Drawbar pull/operating weight: 0.87
Larger Arm Crowd Force and Digging Force
Provide Increased Production
Arm crowd force is increased 10% by improvement of arm
cylinder linkage; when Power Max function is applied, arm
crowd force is increased by an additional 7%. As a result the
total arm crowd force is increased 18%.
Bucket digging force when Power Max is applied also
increased 7%. The larger digging forces generated the
largest production in the 30 ton 33 U.S. ton class.
*Arm Crowd Force: 171 kN 17400 kgf 38,360 lb.
*Bucket Digging Force: 227 kN 23100 kgf 50,930 lb.
* Measured with Power Max function, 3185 mm 10'5" and ISO rating
Smooth Loading Operation
Two return hoses
Two return hoses improve hydraulic
performance. In the arm out
function, a portion of the oil is
returned to the tank smoothly.
Economy Mode
Economy mode is environmentally friendly. Fuel consumption
is reduced 20% (compared with PC300-7 Active mode)
and production is equal to the PC300-6 heavy duty mode.
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.
Smooth mode
Boom floats upward, Boom pushing force is
reducing lifting of machine increased, ditch digging and
front. This facilitates box digging operation on
gathering blasted rock and hard ground are improved.
scraping down operations.
Excellent Reliability and Durability
High Rigidity Work Equipment
17%
The arm and boom are strengthened to correspond to increasing bucket and arm
increased
digging forces. The arm and boom cross sectional strength are also increased
35% and 9% respectively. The boom and arm have large cross-sectional
dimensions as well as continuous groove welding, improving digging and side
contact strength.
Sturdy Frame Structure
The revolving frame, center frame
and undercarriage are designed by
using the most advanced three-dimensional
CAD and FEM analysis technology.
Reliable Components
All of the major machine components,
such as engine, hydraulic pumps,
hydraulic motors and control valves,
etc., are exclusively designed and
manufactured by Komatsu.
Highly Reliable Electronic Devices
Exclusively designed electronic devices have passed
severe testing.
Controller
Connectors
Metal guard rings protect all the hydraulic cylinders and improve reliability.
Harmony with Environment
Low Noise
Noise is reduced not only from the engine but also
during swing and hydraulic relief. Dynamic noise level
is 106 dB.
Environment Oriented Mode (Economy Mode)
Economy mode meets the needs of the 21st century.
Economy mode offers the user fuel savings, quiet
operation and less CO
Fuel consumption is reduced 20% (compared with
Active mode).
Production is the same as the PC300-6
Power mode
heavy duty mode.
HYDRAULIC EXCAVATOR
Sensors
Heat resistant wiring
Easily Recycled
PC300-7 is designed with consideration of recycling and
uses natural resources effectively.
Sound suppressing material is made from PET
(polyethylene terephthalate) resin that is easy to
recycle.
All exterior parts are made from steel.
emission.
Engine and hydraulic system oil and filter replacement
2
intervals are extended to save earth resources.
All resin-made parts are indicated by material code
symbol.
PC300-7 0
Grease
Grease Sealed Track
PC300-7 uses grease sealed tracks for
extended undercarriage life.
Track Link with Strut
PC300-7 uses track links with
strut providing superb durability
5