Working Mode
Application
Advantage
Active
●
Maximum production/power
A
Mode
●
Fast cycle times
E
Economy
●
Good cycle times
Mode
●
Good fuel economy
Hydraulics
Unique three-pump system assures smooth compound movement of the
work equipment. OLSS (Open Center Load Sensing System) controls all
three pumps for efficient engine power use. This system also reduces
hydraulic loss during operation.
Active and Economy mode
The PC1250-7 excavator is equipped with two working modes. Each mode
is designed to match engine speed, pump speed, and system pressure
with the current application, giving the operator flexibility to match equip-
ment performance to the job at hand.
5
Multi-Function
Color Monitor
Extend and
retract
PC1250-7
HYDRAULIC EXCAVATOR
Working Mode Selection
Heavy Lift Mode
Gives the operator approximately 10% more lifting force on the boom
when needed for handling rock or heavy lifting applications.
Two Settings for the 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.
Swing priority setting
The swing priority setting allows the operator to use the same easy motion
for 180˚ loading as 90˚ loading operations. By altering the oil flow this set-
ting allows you to select either boom or swing as the priority for increased
production.
Shockless Boom Control
The PC1250-7 features a shockless
valve (double-check slow return valve)
that automatically reduces the amount
of vibration present when operating the
boom. Operator fatigue is reduced
(which can improve safety and
productivity), and spillage caused by
vibration is prevented.
Two Working Modes
Heavy Lift Mode
Engine
The PC1250-7 gets its exceptional power and work capacity
from its Komatsu SAA6D170E-3 engine. Output is
485 kW
651 flywheel HP
providing more hydraulic power.
In addition, the fuel consumption is reduced by 13%
when using Economy Mode.
Noise levels are reduced for greater operator comfort.
Largest Bucket Capacity
Bucket capacity is the largest in its class and its large
opening and shallow bottom offers easy loading.
Improved Machine Stability
The center of gravity is moved rearward and the 18.0 tonne
19.8 U.S. ton
counterweight provides the stability and lifting
capacity needed for maximum productivity.
Additional Features
• Large digging force
• Large drawbar pull
• Fast cycle times
High Production and Low Fuel Consumption
4
P
RODUCTIVITY
F
EATURES
P
RODUCTIVITY
F
EATURES
EMMS (Equipment Management
Monitoring System)
1. Monitor Function
Controller monitors engine oil
level, coolant temperature, bat-
tery charge and air clogging,
etc.
The controller finds any abnor-
mality, and displays it on the
LCD.
2. Maintenance Monitor Function
informs replacement time of oil
and filters on LCD when the
replacement interval is reached.
3. Trouble Data Memory Function
stores machine abnormalities
(error codes) in the monitor for
effective trouble shooting.