5
Working Mode
Application
Advantage
Active mode
●
Maximum production/power
A
●
Fast cycle times
E
Economy mode
●
Excellent fuel economy
L
Lifting mode
●
Hydraulic pressure is
increased by 7%
B
Breaker
●
Optimum engine rpm,
operation
hydraulic flow
A newly developed Multi-Function Color Monitor has multiple
functions, such as Working mode selection, hydraulic pump
oil flow adjustment for matching to attachment, and
maintenance interval notice, etc.
Working Mode Selection
The Multi-Function Color Monitor has Active mode,
Economy mode, Lifting mode and Breaker operation mode.
Hydraulic Pump Oil Flow Adjustment System
When installing attachments (breaker, crusher, etc.) and
B, A, or E mode is selected, it is possible to adjust engine and
hydraulic pump discharge flow to match attachment
characteristics. Selection is possible throughout the LCD
(Liquid Crystal Display). This system also allows throttling
of the attachment side discharge flow to provide smooth
work equipment movement and compound operation
with work equipment and attachment.
Lifting Mode
When the Lifting mode is selected,
lifting capacity is increased by
7% by raising hydraulic pressure.
EMMS (Equipment
Management
Monitoring System)
Monitor Function
Controller monitors engine oil level,
coolant temperature, battery charge
and air clogging, etc. If controller
finds any abnormality, it is displayed on the LCD with code.
Maintenance Function
Monitor informs replacement time of oil and filters on LCD
when the replacement interval is reached.
Trouble Data Memory Function
Monitor stores abnormalities for effective troubleshooting.
Multi-Function Color Monitor
The increased output and fuel savings of the Komatsu
SAA6D102E-2 engine result in increased production and
improved production per unit of fuel.
Engine
The PC270-7 gets its exceptional power and work capacity
from a Komatsu SAA6D102E-2 engine. Output is
134 kW
179 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.
Larger Maximum Drawbar Pull
PC270-7’s maximum drawbar pull is increased by 9% and
provides superb slope climbing performance.
The optional heavy duty travel motor gives a extra 6% increase.
Maximum drawbar pull: 249 kN
25400 kgf
56,000 lb
*(264 kN
26900 kgf
59,300 lb)
Drawbar pull/operating weight: 0.94 *(1.00)
*with optional heavy duty travel motor
(Compared with PC250-6)
Drawbar pull
Larger Lifting Capacity
Since lateral stability is improved by use of undercarriage for
PC300-7 and lifting mode is employed, lifting capacity is
increased
.
Larger Digging Power Provides
Increased Production
High Production and Low Fuel Consumption
increased
9%
●
Undercarriage for 30-tone class
Since the undercarriage of PC300-7,
which is one class larger, is used for
PC270-7, it is very durable.
●
High Rigidity Work Equipment
The arm and boom are strengthened to correspond to increasing
bucket and arm digging forces. The arm and boom cross sectional
strength are also increased 25% and 8% 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
●
Sensors
●
Connectors
●
Heat resistant wiring
●
Metal guard rings
protect all the hydraulic cylinders and improve reliability.
Grease Sealed Track provides excellent
undercarriage durability
Track Link with Strut
PC270-7 uses track links with
strut providing superb durability
Excellent Reliability and Durability
4
Bucket digging force is increased by 23% and arm crowd
force is increased by 17%(compared with PC250-6).
Bucket Digging Force*: SAE 176 kN
17900 kgf
39,460 lb
ISO 198 kN
20200 kgf
44,530 lb
Arm Crowd Force*:
SAE 136 kN
13900 kgf
30,640 lb
ISO 148 kN
15100 kgf
33,290 lb
*Measured with Power Max function,
3045 mm
10'0" arm
Economy Mode
Economy mode is environmentally friendly. Fuel consumption
is reduced 16% (compared with PC270-7 Active mode) and
production is equal to the PC250-6 Heavy-duty mode.
Power Max Function
This function temporarily increases digging force by 7% for
added power in tough situations.
Automatic Travel Speed
Travel speed is automatically shifted from high to low
speed according to the pressure of the travel.
Large Digging Height
PC270-7’s maximum digging height is
10 m
32'10",
facilitating jobs that require a longer reach, such as
demolition and slope finishing.
Larger Swing Torque
Swing torque is increased by 21% by increasing the swing
motor capacity. As a result, high swing performance is
obtained on slopes.
High
Mid
Low
Travel Speed
5.5 km/h
4.1 km/h
3.0 km/h
3.4 mph
2.5 mph
1.9 mph
*with optional H/D
*(4.5 km/h)
*(3.3 km/h)
*(2.8 km/h)
travel motor
*(2.8 mph)
*(2.1 mph)
*(1.8 mph)
6.1 m
20'
4.6 m
15'
6.4 ton
7.05 U.S. ton
H
Y D R A U L I C
E
X C A V A T O R
HYDRAULIC EXCAVATOR
PC270-7
PC270-7
0
P
RODUCTIVITY
F
EATURES
