komatsu PC750, PC750SE-7, PC750-7 SPECIFICATIONS

STANDARD EQUIPMENT

ENGINE AND RELATED ITEMS:

● Air cleaner, double element, dry

● Cooling fan, with fan guard

● Engine, Komatsu SAA6D140E-3

ELECTRICAL SYSTEM:

● Alternator, 50 amp, 24 V

● Batteries, 170 Ah, 2 x 12 V

● Starting motors, 11kW

● Working lights-2 boom, 2 cab top front, 1 cab bottom

● Step light with timer

● Auto decelerator

UNDERCARRIAGE:

● 610 mm 24'' double grouser

● 8 track/3 carrier rollers (each side)

● Hydraulic track adjusters (each side)

● Variable track gauge

● Sealed track

GUARDS AND COVERS:

● Dust-proof net for radiator and oil cooler

● Pump/engine room partition cover

● Travel motor guards

OPERATOR ENVIRONMENT:

● Damper mount, all-weather, sound-suppressed cab with tinted
safety glass windows, lockable door, intermittent window wiper
and washer, floormat, cigarette lighter and ashtray

● Multi-function color monitor, electronically-controlled throttle dials,
electric service meter, gauges (coolant temperature, hydraulic oil
temperature and fuel level), caution lights (electric charge, engine
oil pressure, and air cleaner clogging), indicator lights (engine pre­heating and swing lock light) level check lights (coolant, engine
oil, and hydraulic oil level), self-diagnostic system with trouble
data memory

● Seat, fully adjustable with suspension

● Cab with pull-up type front window

● Rear view mirror (R,H)

HYDRAULIC CONTROLS:

● Fully hydraulic, with Electronic Open-Center Load-Sensing
(EOLSS) and engine speed sensing (pump and engine mutual
control system)

● One gear pump for control circuit

● Two axial piston motors for swing with single-stage relief valve

● One axial piston motor per track for travel with counter balance

valve

● Two variable capacity piston pumps

● Two control valves, 5+4 spools (boom, arm, bucket, swing, and

travel)

● Control levers, wrist control levers for arm, boom, bucket, and
swing with PPC system

● Control levers and pedals for steering and travel with PPC system

● Oil cooler

● In-line filter

● Heavy lift mode system

● Shockless boom control

● Swing priority selection system

● Two-mode setting for boom

DRIVE AND BRAKE SYSTEM:

● Brakes, hydraulic lock travel brakes, oil disc parking

● Hydrostatic two travel speed system with planetary triple reduction

final drive

OTHER STANDARD EQUIPMENT:

● Automatic swing holding brake

● Corrosion resister

● Counterweight, 9800 kg 21,610 lb

● Horn, electric

● Marks and plates, English

● Paint, Komatsu standard

● Large handrails

● One-touch engine oil drainage

● PM tune-up service connector

● Remote greasing for radiator fan drive

OPTIONAL EQUIPMENT

● Additional truck guard

● Alternator, 75 Amp, 24 V

● Arms (Backhoe):

PC750-7:
—3600 mm 11'10'' arm assembly
—4600 mm 15'1'' arm assembly
—5600 mm 18'4'' arm assembly
PC750SE-7:
—2945 mm 9'8'' SE arm assembly

● Auto air conditioner

● Automatic greasing

● Booms (Backhoe):

PC750-7:
—8200 mm 26'11'' boom assembly
PC750SE-7:
—7100 mm 23'4'' boom assembly

● Cab front guard (ISO 10262 level 2)

● Cab with fixed front window

● Catwalk

● Coolant heater

● Counterweight 12000 kg 26,450 lb

● Counterweight remover

● Double frange truck roller

● 12V electric supply

● Fire extinguisher

● Full length track guard

● General tool kit

● Grease gun, electric pump with indicator

● High cab mount

● Interconnected horn and warning light

● KOMTRAX

● Large-capacity batteries

● Loading shovel attachments

● Lower wiper

● OPG top guard

● Provision for fast fuel fill

● Radio AM/FM

● Rain visor

● Rear view mirror (L,H)

● Seat belt 78 mm 3'', 50 mm 2''

● Shoes:

—710 mm 28'' double grouser
—810 mm 32'' double grouser
—910 mm 36'' double grouser
—1010 mm 40'' double grouser

● Spare parts for first service

● Strengthened revolving frame underguard

● Sun visor

● Track frame undercover (center)

● Travel alarm

● Vandalism protection locks

www.Komatsu.com Printed in Japan 200801 IP. As(05)

CEN00301-01 Materials and specifications are subject to change without notice

is a trademark of Komatsu Ltd. Japan

Photo may include optional equipment.

FLYWHEEL HORSEPOWER

338 kW 454 HP @ 1800 rpm

OPERATING WEIGHT

PC750-7: 72370– 74980 kg

159,550– 165,300 lb

PC750SE-7: 73170– 75780 kg

161,310– 167,060 lb

PC750-7 BACKHOE
PC750SE-7 BACKHOE
PC750-7

LOADIN G SHOVEL

PC

750

HYDRAULIC EXCAVATOR

3

● Protected hydraulic circuit

The cool-running hydraulic system is protected with
the most extensive filtration system available, includ­ing a high pressure in-line filter for each main pump.

● Sturdy guards shield the travel motors against

damage from rocks.

● Highly Reliable Electronic Devices

Exclusively designed electronic devices have passed
severe testing.

- Controller - Sensors - Connectors

- Heat resistant wiring

See page 6.

FLYWHEEL HORSEPOWER
338 kW 454 HP @ 1800 rpm

OPERATING WEIGHT

PC750-7

72370– 74980 kg

159,500 – 165,300 lb

PC750SE-7

73170– 75780 kg

161,310 – 167,060 lb

PC750-7

HYDRAULIC EXCAVATOR

Harmony with Environment

● Low emission engine
Powerful turbocharged and air-to-air aftercooled Komatsu SAA6D140E-3
engine provides 338 kW 454 HP.

See page 4.

Large Comfortable Cab

● Low noise and vibration with cab damper mounting

● Large-capacity cab with narrow corner posts provides

improved visibility

● Large-capacity air conditioner (optional)

● Pressurized cab prevents external dust from entering

See page 8.

Easy Maintenance

● Replacement interval is extended
for new hydraulic filter.

See page 7.

Advanced monitor features

● Machine condition can be
checked with Equipment
Management Monitoring System
(EMMS).

● Two working modes combine
with heavy lift mode for maxi­mum productivity. See page 5.

Large handrail, step and catwalk

provide easy access to the engine and
hydraulic equipment.

See page 7.

2

PC750-7 Series Hydraulic Excavator

W

ALK

-A

ROUND

W

ALK

-A

ROUND

● Large digging force

High operation efficiency with
large digging force in rugged
work sites

● Large size bucket

The wide and shallow contour
facilitates loading.

● Heavy lift mode

The heavy lift mode increases
the lifting force by 10%.

● Swing priority mode

The swing priority mode

Productivity Features

Excellent Reliability and Durability

● Shockless boom

Switch selection reduces chassis vibration
after sudden stops.

● Boom foot hoses are arranged under

the boom foot, improving hose life and safety.

● Face seals, which have excellent sealing

performance, are used for the hydraulic
hoses.

See page 5,6.

improves efficiency for loading dump
trucks.

● Two-mode setting for boom

Switch selection allows either powerful
digging or smooth boom operation.

● Fuel consumption is reduced 12%

with Economy Mode.

● Large drawbar pull and steering
force provide excellent mobility.

● Excellent Swing Performance

provides excellent swing performance on slope.

See page 4,5.

Photo may include optional equipment.

Working Mode Application Advantage

Active

● Maximum production/power

A

Mode ● Fast cycle times

E

Economy

● Good cycle times

Mode ● Good fuel economy

Hydraulics

Unique two-pump system assures smooth compound movement of the
work equipment. OLSS (Open Center Load Sensing System) controls all
pumps for efficient engine power use. This system also reduces hydraulic
loss during operation.

Active and Economy mode

The PC750-7 excavator is equipped with two working modes. Each mode
is designed to match engine speed, pump speed, and system pressure to
the current application, giving the operator flexibility to match equipment
performance to the job at hand.

5

Multi-Function
Color Monitor

PC750-7

HYDRAULIC EXCAVATOR

Working Mode Selection

Heavy Lift Mode

Gives the operator 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 setting allows
you to select either boom or swing as the
priority for increased production.

Shockless Boom Control

The PC750-7 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 PC750-7 gets its exceptional power and work capacity
from its Komatsu SAA6D140E-3 engine. Output is
338 kW 454 HP providing more hydraulic power.
In addition, the fuel consumption is reduced by 12%
when using Economy Mode.

Large Digging Force

Thanks to the high engine output and an excellent hydraulic
system, this machine demonstrates powerful digging force.

Large Drawbar Pull and Steering Force

Since the machine has a large drawbar pull and a high steer­ing force, it demonstrates excellent mobility even when it is
being used on inclined sites. In addition, this machine is
equipped with an automatic travel speed shifting system,
which makes automatic Hi/Lo shifts.

Excellent Swing Performance

Twin-swing motor system of PC750-7 provides excellent
swing performance on slope.

Excellent Machine Stability

The rear center of gravity and the 9.8 tonne

10.8 U.S. ton counterweight provides the stability and lifting
capacity needed for maximum productivity.

Large Bucket Capacity

Large capacity bucket has large and shallow contour offers
easy loading.
PC750-7: 2.8 - 3.4 m

3

3.66 - 4.45 yd

3

PC750SE-7: 4.0 - 4.5 m35.23 - 5.89 yd

3

tank capacity (2750
ltr 726.6 U.S. gal)

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, bat­tery charge air-filter restriction,
etc.
The controller finds any abnor­mality 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.

Swing Priority Mode

Photo may include optional equipment.

Selection

ON

OFF

Result

Oil flow to the swing motor is increased.
180˚loading operations are most efficient.

Oil flow to the boom is increased.
90˚loading operations are most efficient.

Smooth
mode

Boom raise

Power
mode

Extend and
retract