Komatsu PC750SE-7 BACKHOE Quick start guide

Brand: Komatsu

Model: PC750SE-7 BACKHOE

Category: Compact Excavator

Type: Quick start guide

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 pre-

heating 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

750

HYDRAULIC EXCAVATOR

●Protected hydraulic circuit

The cool-running hydraulic system is protected with

the most extensive filtration system available, includ-

ing 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 maxi-

mum productivity. See page 5.

Large handrail, step and catwalk

provide easy access to the engine and

hydraulic equipment.

See page 7.

PC750-7 Series Hydraulic Excavator

ALK

-A

ROUND

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

AMode ●Fast cycle times

EEconomy ●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.

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 steer-

ing 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 m33.66 - 4.45 yd3

PC750SE-7: 4.0 - 4.5 m35.23 - 5.89 yd3

tank capacity (2750

ltr 726.6 U.S. gal)

High Production and Low Fuel Consumption

RODUCTIVITY

EATURES

RODUCTIVITY

EATURES

EMMS (Equipment Management

Monitoring System)

1. Monitor Function

Controller monitors engine oil

level, coolant temperature, bat-

tery charge air-filter restriction,

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.

Smooth

mode

Boom raise

Power

mode

Extend and

retract

Swing Priority Mode

Photo may include optional equipment.

Selection

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.

Sturdy Undercarriage Guard

The undercarriage is strengthened to

provide excellent reliability and dura-

bility when working on rocky ground

or blasted rock.

PC750-7

HYDRAULIC EXCAVATOR

Sturdy guards shield the travel

motors and piping against damage

from rocks.

AINTENANCE

EATURES

AINTENANCE

EATURES

Easy Maintenance

Komatsu designed the PC750-7 for easy service access.

Wide Catwalk (optional)

Wide walkway for maintenance is pro-

vided around the engine and hydraulic

components, allowing easy access to

inspection and maintenance points.

Divided Type Engine Cover

The divided engine cover allows

inspection points around the engine to

be easily accessed.

Reduced Maintenance Costs

Hydraulic oil filter

replacement is

extended from 500 to

1000 hours.

DT-type connectors seal tight and

have higher reliability.

High-pressure In-Line Filtration

The PC750-7 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)

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.

ELIABILITY

EATURES

ELIABILITY

EATURES

Motorized Grease Gun Equipped

with Hose Reel (optional)

Greasing is made easy with the electric

motorized grease gun and indicator.

Excellent Reliability and Durability

Grease can drum storage location

Grease gun

The grease gun can be

reached from ground level.

Indicator

O-Ring Face Seal

The hydraulic hose seal method has

been changed from a conventional

taper seal to an O-ring seal. This pro-

vides improved sealing performance

during vibration.

Photo may include optional equipment.

KOMTRAX®System (optional)

The KOMTRAX system monitors

machine condition, operating status,

operating location, etc., and provides

timely notification of any machine prob-

lems.

Since data is transmitted via satellite

communication system, secure data

communication is possible from any

operating site including a quarry or a

mine, further improving machine relia-

bility.

(There are some countries where this

feature is not in service. Please consult

Komatsu distributor for availability.)

Metal Guard Rings

Metal guard rings protect all the

hydraulic cylinders and improve

reliability.

Heat-Resistant Wiring

Heat-resistant wiring is utilized for the

engine electric circuit and other major

component circuits.

Circuit Breaker

With the circuit breaker, the machine

can be easily restarted after repair.

PC750-7

HYDRAULIC EXCAVATOR

Engine/pump room partition

prevents oil from spraying on

the engine if a hydraulic hose

should burst.

Horn interconnected with

warning light (optional) give

visual and audible notice of the

excavator’s operation when

activated.

Safety Features

Engine/pump

room partition

Step light with timer

provides light for about one

minute to allow the operator

to get off the machine safely.

Large handrails (standard) and

wide catwalk (optional) are pro-

vided around revolving frame for

easier and safer access to engine

and hydraulic components.

ORKING

NVIRONMENT

ORKING

NVIRONMENT

Superb Visibility

The PC750-7’s large capacity cab and

increased glass area provide superb front

visibility.

Cab Mounts

The new cab damper mounting reduces

vibration and noise at operator’s seat.

Suspension seat

The suspension seat has been improved

to reduce and absorb vibration transmitted

to the operator. Rigidity adjustment, fore

and aft sliding, as well as up and down

adjustment is available to accommodate

the body-build of operators.

Low Noise Design

The noise levels at the operator’s ear are

decreased by improving the cab mounts

and cab sealing performance.

Multi-Position Controls

The multi-position,

pressure proportional

control levers allow

the operator to work in

comfort while maintaining

precise control.

A double-slide mechanism allows the

seat and controllers to move together

or independently, allowing the operator

to position the controllers for maximum

productivity and comfort.

Pressurized Cab

The optional air conditioner, air filter, and a

higher internal air pressure (6 mm Aq

0.24" in Aq) prevent external dust from

entering the cab.

Cab with fixed front window (optional)

Internal air pressure : 10 mm Aq 0.39" in Aq

Automatic Air Conditioner

(optional)

A 6,900 kcal air conditioner is utilized.

The bi-level control function keeps the

operator's head and feet cool and warm

respectively. This improved air flow func-

tion keeps the inside of the cab

comfortable throughout the year.

The cab interior is spacious and provides a

comfortable working environment…

Seat belt shown in photo is optional.

Thermal guards are placed

around high-temperature

parts of the engine and

accessory drive.

Silicon

Oil

Rubber

Spring

Seat with headrest fully reclined

Large Comfortable Cab

( )

Photo may include optional equipment.

PC750-7 PC750SE-7

Operating Ground Operating Ground

Shoes Weight Pressure Weight Pressure

610 mm 72370 kg 118 kPa 73170 kg 120 kPa

1.20 kgf/cm21.22 kgf/cm2

24" 159,550 lb 17.1 psi 161,310 lb 17.3 psi

710 mm 73170 kg 102 kPa 73970 kg 104 kPa

1.04 kgf/cm21.06 kgf/cm2

28" 161,310 lb 14.8 psi 163,070 lb 15.1 psi

810 mm 73700 kg 90.2 kPa 74500 kg 91.2 kPa

0.92 kgf/cm20.93 kgf/cm2

32" 162,480 lb 13.1 psi 164,240 lb 13.2 psi

910 mm 74340 kg 81.4 kPa 75140 kg 82.4 kPa

0.83 kgf/cm20.84 kgf/cm2

36" 163,890 lb 11.8 psi 165,650 lb 11.9 psi

1010 mm 74980 kg 73.5 kPa 75780 kg 74.5 kPa

0.75 kgf/cm20.76 kgf/cm2

40" 165,300 lb 10.7 psi 167,060 lb 10.8 psi

WORKING RANGE

BACKHOE DIMENSIONS

BACKHOE BUCKET, ARM, AND BOOM COMBINATION

Unit: mm ft in

These charts are based on over-side stability with fully loaded bucket at maximum reach.

: General purpose use, density up to 1.8 t/m33,000 lb/yd3: General purpose use, density up to 1.5 t/m32,500 lb/yd3

—: Not useable

3560 11'8"

4245 13'11"

R=4300 14'1"

4500 14'9"

5810 19'1"

2.0"

1560 5'1"

3445 11'4"

4000 13'1"

840 2'9"

610 24"

3500 11'6"

4110 13'6"

3390 11'1"

When retracted

3195 10'6"

1 2 3 4 5 6 7 8 910111213141516

8ft

PC750-7 PC750SE-7

Boom length 8200 mm 26'11" 7100 mm 23'4"

Arm length 3600 mm 11'10" 4600 mm 15'1" 5600 mm 18'4" 2945 mm 9'8"

A Max. digging height 11840 mm 38'10" 12000 mm 39'4" 12690 mm 41'8" 11330 mm 37'2"

B Max. dumping height 8145 mm 26'7" 8295 mm 27'3" 8890 mm 29'2" 7525 mm 24'8"

C Max. digging depth 8600 mm 28'3" 9590 mm 31'6" 10595 mm 34'9" 7130 mm 23'5"

D Max. vertical wall

digging depth 5575 mm 18'3" 6575 mm 21'7" 7920 mm 26'0" 4080 mm 13'5"

E Max. digging depth

of cut for 8' level 8445 mm 27'8" 9455 mm 31'0" 10500 mm 34'5" 6980 mm 22'11"

F Max. digging reach 13740 mm 45'1" 14575 mm 47'1" 15635 mm 51'4" 12265 mm 40'3"

G Max. digging reach

at ground level 13460 mm 44'2" 14310 mm 46'1" 15385 mm 50'6" 11945 mm 39'2"

H Min. swing radius 6060 mm 19'11" 6085 mm 20'0" 6100 mm 20'0" 5645 mm 18'6"

Bucket digging force (SAE) 296 kN 296 kN 296 kN 391 kN

30200 kgf / 66,580 lb 30200 kgf / 66,580 lb 30200 kgf / 66,580 lb 39900 kgf / 87,960 lb

Arm crowd force (SAE) 237 kN 214 kN 181 kN 331 kN

24200 kgf / 53,350 lb 21800 kgf / 48,060 lb 18500 kgf / 40,790 lb 33800 kgf / 74,520 lb

Bucket digging force (ISO) 333 kN 333 kN 333 kN 431 kN

34000 kgf / 74,960 lb 34000 kgf / 74,960 lb 34000 kgf / 74,960 lb 43900 kgf / 96,780 lb

Arm crowd force (ISO) 250 kN 222 kN 183 kN 341 kN

25500 kgf / 56,220 lb 22600 kgf / 49,820 lb 19100 kgf / 42,110 lb 34800 kgf / 76,720 lb

PC750-7 PC750SE-7

8.2 m 26'11" boom 7.1 m 23'4" boom

3.6 m 11'10" arm 4.6 m 15'1" arm 5.6 m 18'4" arm 2.9 m 9'8" arm

A Overall Height 4660 mm 15'3" 5970 mm 19'7" 6560 mm 21'6" 4615 mm 15'2"

B Overall Length 14305 mm 46'11" 13955 mm 45'9" 13530 mm 44'5" 13030 mm 42'9"

BUCKET CAPACITY (HEAPED) WIDTH

Without Side With Side WEIGHT

SAE, PCSA CECE shrouds, Side cutters shrouds, Side cutters (with side cutters) ARM LENGTH

m3 yd3m3 yd3mm in mm in kg lb m ft in

PC750-7 (use with 8.2 m boom) 3.6 11'10" 4.6 15'1" 5.6 18'4"

2.8 3.66 2.5 3.27 1550 51.0" 1695 66.7" 2740 6,040 

3.1 4.05 2.8 3.66 1700 66.9" 1845 72.6" 2960 6,530 

3.4 4.45 3.0 3.92 1820 71.7" 1920 75.6" 3500 7,720 ——

PC750SE-7 (use with 7.1 m boom) 2.9 9'8"

4.0 5.23 3.5 4.58 2000 78.7" 2100 82.8" 3435 7,570 

4.3 5.62 3.8 4.97 2150 84.6" 2250 88.7" 3870 8,530

4.5 5.89 4.0 5.23 2230 91.9" 2330 91.7" 4050 8,930

PECIFICATIONS

QUIPMENTIP

PECIFICATIONS

QUIPMENTIP

DRIVES AND BRAKES

Steering control . . . . . . . . . . . . . . . . . . . . . . . Two levers with pedals

Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully hydrostatic

Travel motor . . . . . . . . . . . . . . . . . Axial piston motor, in-shoe design

Reduction system . . . . . . . . . . . . . . . . . . Planetary double reduction

Maximum drawbar pull . . . . . . . . . . . . . 559kN 57000 kg 125,660 lb

Gradability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70%

Maximum travel speed

Low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 km/h 1.7 mph

High . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 km/h 2.6 mph

Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock

Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil disc brake

UNDERCARRIAGE

Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H-leg frame

Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section

Track chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed

Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic

No. of shoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 each side

No. of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 each side

No. of track rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 each side

COOLANT AND LUBRICANT

CAPACITY (REFILLING)

Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . 880 ltr 232.5 U.S. gal

Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 ltr 22.5 U.S. gal

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 ltr 14.5 U.S. gal

Final drive, each side . . . . . . . . . . . . . . . . . . . 20 ltr 5.3 U.S. gal

Swing drive . . . . . . . . . . . . . . . . . . . . . . 24.5 x 2 ltr 6.5 x 2 U.S. gal

Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . 440 ltr 116.2 U.S. gal

OPERATING WEIGHT (APPROXIMATE)

PC750-7: Operating weight, including 8200 mm 26'11" boom, 3600

mm 11'10" arm, SAE heaped 3.1 m34.05 yd3backhoe bucket, opera-

tor, lubricant, coolant, full fuel tank, and the standard equipment.

PC750SE-7: Operating weight, including 7100 mm 23'4" boom, 2945

mm 9'8" arm, SAE heaped 4.0 m35.23 yd3backhoe bucket, operator,

lubricant, coolant, full fuel tank, and the standard equipment.

ENGINE

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-3

Type . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injection

Aspiration. . . . . . . . . . . . . . . Turbocharged and air-to-air aftercooled

Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 mm 5.51"

Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 mm 6.50"

Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in3

Flywheel horsepower. . . . . . . . . . . . . . 338 kW 454 HP @ 1800 rpm

(SAE J1349)

Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, electronic

HYDRAULIC SYSTEM

Type . . . . . . . . . . . . . . . . . . . . . . . Open-center load-sensing system

Number of selectable working modes . . . . . . . . . . . . . . . . . . . . . . . 2

Main pump:

Type . . . . . . . . . . . . . . . . . . . . . . . Variable-capacity piston pumps

Pumps for. . . . . . . . Boom, arm, bucket, swing, and travel circuits

Maximum flow:

Main . . . . . . . . . . . . . . . . . . . 2 x 494 ltr/min 2 x 130.5 U.S. gpm

Sub-pump for control circuit. . . . . . . . . . . . . . . . . . . . . . . Gear pump

Hydraulic motors:

Travel. . . . . . . . . . . . . . . 2 x axial piston motor with parking brake

Swing . . . . . . . . . . 2 x axial piston motor with swing holding brake

Relief valve setting:

Implement circuits . . . . . . . . . . . 31.4 MPa 320 kg/cm24,550 psi

Travel circuit . . . . . . . . . . . . . . . 34.3 MPa 350 kg/cm24,980 psi

Swing circuit . . . . . . . . . . . . . . . 28.4 MPa 290 kg/cm24,120 psi

Heavy lift circuit . . . . . . . . . . . . . 34.3 MPa 350 kg/cm24,980 psi

Pilot circuit. . . . . . . . . . . . . . . . . . 2.9 MPa 30 kg/cm2430 psi

Hydraulic cylinders:

Number of cylinders—bore x stroke

Boom. . . . . . . . . . . . . . . . 2 – 200 mm x 1950 mm 7.9" x 76.8"

Arm

Std . . . . . . . . . . . . . . . . . 1 – 200 mm x 2250 mm 7.9" x 88.6"

SE . . . . . . . . . . . . . . . . . 2 – 185 mm x 1610 mm 7.3" x 63.4"

Bucket

Std . . . . . . . . . . . . . . . . . 1 – 185 mm x 1610 mm 7.3" x 63.4"

SE . . . . . . . . . . . . . . . . . 1 – 225 mm x 1420 mm 8.9" x 55.9"

SWING SYSTEM

Driven method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic motor

Swing reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear

Swing circle lubrication . . . . . . . . . . . . . . . . . . . . . . . Grease-bathed

Swing lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil disc brake

Swing speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.8 rpm

PC750-7

HYDRAULIC EXCAVATOR

A Maximum 12.0 m 39' 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCsCfCs

6.0 m *8600 7500 *13250 13100

19' *19,000 16,500 *29,200 28,900

3.0 m 8450 6350 8650 6500 15000 11650 *20000 15950 *26550 22950

9' 18,600 14,000 19,000 14,300 33,100 25,700 *44,100 35,200 *58,600 50,600

0 m 8450 6250 13700 10400 18600 14100 27050 20200 *15300 *15300

0' 18,600 13,800 30,200 23,000 41,000 31,100 59,600 44,500 *33,700 *33,700

–3.0 m 10000 7450 13200 9900 17950 13500 26450 19700 *28400 *28400 *19900 *19900

–9' 22,000 16,400 29,100 21,900 39,600 29,800 58,400 43,400 *62,600 *62,600 *43,800 *43,800

–6.0 m 15900 12100 *18300 14000 *23450 20500 *30200 *30200

–19' 35,100 26,600 *40,300 30,900 *51,700 45,200 *66,600 *66,600

A Maximum 12.0 m 39' 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCsCfCs

6.0 m *7500 7500 *11500 *11500

19' *16,500 16,500 *25,400 *25,400

3.0 m 8450 6350 8650 6500 *14150 11650 *17500 15950 *23400 22950

9' 18,700 14,000 19,000 14,300 *31,200 25,700 *38,600 35,200 51,600 50,600

0 m 8450 6250 13700 10400 18600 14100 *27000 20200 *13600 *13600

0' 18,600 13,800 30,200 23,000 41,000 31,100 *59,500 44,500 *30,000 *30,000

–3.0 m 10000 7450 13200 9900 17950 13500 *25950 19700 *25600 *25600 *17800 *17800

–9' 22,000 16,400 29,100 21,900 39,600 29,800 *57,300 43,400 *56,400 *56,400 *39,300 *39,300

–6.0 m *13850 12100 *15800 14000 *20350 *20350 *26300 *26300

–19' *30,500 26,600 *34,800 30,900 *44,900 *44,900 *58,000 *58,000

A Maximum 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCs

6.0 m *10550 8650 *14800 12700 *17250 *17250 *21350 *21350

19' *23,300 19,100 *32,700 28,000 *38,000 *38,000 *47,100 *47,100

3.0 m 9650 7350 14750 11400 19400 14850 28850 21900

9' 21,300 16,200 32,500 25,200 42,800 32,800 63,700 48,300

0 m 9800 7350 13750 10450 18550 14100 26900 20100

0' 21,600 16,200 30,300 23,000 40,900 31,000 59,300 44,300

–3.0 m 12000 9100 13500 10250 18300 13850 26950 20150 *32500 *32500 *23750 *23750

–9' 26,500 20,000 29,800 22,600 40,300 30,500 59,500 44,500 *71,700 *71,700 *52,300 *52,300

–6.0 m *16650 *16650 *19700 *19700

–19' *36,800 *36,800 *43,400 *43,400

A Maximum 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCs

6.0 m *9350 8650 *12950 12700 *15150 *15150 *18900 *18900

19' *20,600 19,100 *28,500 28,000 *33,400 *33,400 *41,700 *41,700

3.0 m 9650 7350 14750 11400 *18450 14850 *25700 21900

9' 21,300 16,200 32,500 25,200 *40,700 32,800 *56,700 48,300

0 m 9800 7350 13750 10450 18550 14100 26900 20100

0' 21,600 16,200 30,300 23,000 40,900 31,000 59,300 44,300

–3.0 m 12000 9100 13500 10250 18300 13850 *24850 20150 *29350 *29350 *21350 *21350

–9' 26,500 20,000 29,800 22,600 40,300 30,500 *54,800 44,500 *64,700 *64,700 *47,100 *47,100

–6.0 m *14350 *14350 *17000 *17000

–19' *31,600 *31,600 *37,500 *37,500

LOADING SHOVEL OPERATING WEIGHT

Operating weight, including 4600 mm 15'1" boom, 3400 mm 11'2" arm, 4.5 m35.9 yd3heaped bucket, operator, lubricants, coolant, full fuel

tank and standard equipment.

5810 19'11"

4500 14'9"

2.0"

610 24"

3500 11'6"

4110 13'6"

840 2'9"

3195 10'6"

3560 11'8"

1560 5'1"

3445 11'4"

4000 13'1"

4245 13'11"

R=4300 14'1"

5640 18'6"

9865 32'4"

When retracted

3390 11'1"

LIFTING CAPACITY

Unit: kg lb

PC750-7

Equipment:

●Boom: 8.2 m 26'11"

●Arm: 3.6 m 11'10"

●Bucket: 3.1 m34.05 yd3

with Heavy Lift On

A: Reach from swing center

B: Bucket hook height

C: Lifting capacity

Cf: Rating over front

Cs: Rating over side

: Rating at maximum reach

*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.

HEAVY LIFTING "OFF"

Unit: kg lb

HEAVY LIFTING "ON"

Unit: kg lb

PC750-7

Equipment:

●Boom: 8.2 m 26'11"

●Arm: 4.6 m 15'1"

●Bucket: 2.8 m33.66 yd3

A: Reach from swing center

B: Bucket hook height

C: Lifting capacity

Cf: Rating over front

Cs: Rating over side

: Rating at maximum reach

HEAVY LIFTING "OFF"

Unit: kg lb

HEAVY LIFTING "ON"

*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.

PC750-7

HYDRAULIC EXCAVATOR

WORKING RANGE AND BUCKET SELECTION

LOADING SHOVEL DIMENSIONS

Type of bucket Bottom dump

Capacity–heaped 4.5 m35.9 yd35.1 m36.7 yd3

A Max. cutting height 10635 mm 34'11"

B Max. dumping height 7180 mm 23'7"

C Max. digging depth 3535 mm 11'7"

D Max. digging reach 10305 mm 33'10"

E Max. digging reach at ground level 9920 mm 32'7"

F Level crowding distance 3875 mm 12'9"

G Min. crowd distance 5620 mm 18'5"

Bucket digging force 477 kN 48600 kg 107,140 lb

Arm crowd force 404 kN 41200 kg 90,830 lb

Working Range

Type of bucket Bottom dump

Capacity–heaped 4.5 m35.9 yd35.1 m36.7 yd3

Width 2320 mm 91.3" 2670 mm 105.1"

Weight 5700 kg 12,570 lb 7360 kg 16,230 lb

No. of bucket teeth 6 6

Recommended uses General-purpose Light-duty

digging and loading excavation and loading

Bucket Selection

G.L.

1 2 3 4 5 6 7 8 91011

Shoes Operating Weight Ground Pressure

610 mm 76000 kg 124kPa/1.26 kg/cm2

24" 167,550 lb 17.9 PSI

A Maximum 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCs

6.0 m *13600 10850 *13800 11600 *15600 *15600 *18800 *18800

19' *30,000 23,900 *30,400 25,600 *34,400 *34,400 *41,500 *41,500

3.0 m 11800 8900 14100 10750 *19050 15100 *25300 21950

9' 26,000 19,600 31,100 23,700 *42,000 33,300 *55,800 48,400

0 m 12250 9200 13350 10050 18350 13850 27000 20150 *27550 *27550

0' 27,000 20,300 29,400 22,100 40,400 30,500 59,600 44,400 *60,800 *60,800

–3.0 m *16000 12800 *17500 13950 *23150 20450 *29900 *29900 *37500 *37500

–9' *35,200 28,200 *38,600 30,800 *51,000 45,100 *66,000 *66,000 *82,700 *82,700

A Maximum 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCsCfCsCfCsCfCsCfCsCfCs

6.0 m 14050 10850 15000 11600 *17800 16950 *21350 *21350

19' 31,000 23,900 33,100 25,600 *39,300 37,400 *47,100 *47,100

3.0 m 11800 8900 14100 10750 19650 15100 *28750 21950

9' 26,000 19,600 31,100 23,700 43,300 33,300 63,400 48,400

0 m 12250 9200 13350 10050 18350 13850 27000 20150 *30600 *30600

0' 27,000 20,300 29,400 22,100 40,400 30,500 59,600 44,400 *67,400 *67,400

–3.0 m 16900 12800 18450 13950 *26500 20450 *34200 *34200 *42950 *42950

–9' 37,200 28,200 40,700 30,800 *58,400 45,100 *75,400 *75,400 *94,600 *94,600

A Maximum 12.0 m 39' 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCs CfCs CfCsCfCsCfCs CfCsCfCs

6.0 m *5350 *5350 *7900 *7900

19' *11,800 *11,800 *17,400 *17,400

3.0 m *6200 5900 9650 7400 *14600 13150 *17800 *17800 *23300 *23300

9' *13,700 13,000 21,300 16,300 *32,200 28,900 *39,200 *39,200 *51,300 *51,300

0 m 7800 5800 9000 6750 15100 11600 20450 15750 *29200 22550 *15350 *15350

0' 17,200 12,800 19,800 14,900 33,300 25,600 45,100 34,700 *64,300 49,700 *33,900 *33,900

–3.0 m 8950 6650 14250 10850 19350 14700 28450 21350 *23500 *23500 *15600 *15600

–9' 19,700 14,700 31,400 23,900 42,700 32,400 62,800 47,100 *51,800 *51,800 *34,400 *34,400

–6.0 m 12700 9650 14400 10950 18600 13950 *25750 21700 *34200 *34200 *28000 *28000

–19' 28,000 21,200 31,700 24,100 41,000 30,800 *56,800 47,900 *75,400 *75,400 *61,800 *61,800

A Maximum 12.0 m 39' 9.0 m 29' 7.5 m 24' 6.0 m 19' 4.5 m 14' 3.0 m 9'

B CfCs CfCs CfCsCfCsCfCs CfCsCfCs

6.0 m *4550 *4550 *6850 *6850

19' *10,000 *10,000 *15,100 *15,100

3.0 m *5300 *5300 *9500 7400 *12650 *12650 *15500 *15500 *20450 *20450

9' *11,700 *11,700 *20,900 16,300 *27,900 *27,900 *34,200 *34,200 *45,100 *45,100

0 m *6950 5800 9000 6750 *15000 11600 *19050 15750 *25600 22550 *13650 *13650

0' *15,300 12,800 19,800 14,900 *33,100 25,600 *42,000 34,700 *56,400 49,700 *30,100 *30,100

–3.0 m 8950 6650 14250 10850 19350 14700 *26100 21350 *21100 *21100 *13900 *13900

–9' 19,700 14,700 31,400 23,900 42,700 32,400 *57,600 47,100 *46,500 *46,500 *30,600 *30,600

–6.0 m *11750 9650 *13450 10950 *16550 13950 *22400 21700 *29850 *29850 *25250 *25250

–19' *25,900 21,200 *29600 24,100 *36,400 30,800 *49,400 47,900 *65,800 *65,800 *55,600 *55,600

14 15

PC750-7

HYDRAULIC EXCAVATOR

Work equipment assembly (Backhoe)

Weight : PC750-7 : 16.9 t 18.6 U.S.ton

PC750SE-7 : 17.7 t 19.5 U.S.ton

Upper structure

Width : 3195 10'6"

Weight : 24.8 t 27.3 U.S.ton

Base machine

(Both PC750-7 and PC750SE-7 are designed

with the same weight and dimensions.)

Width : 3390 11'1"

Weight : 45.5 t 50.2 U.S.ton

Undercarriage

Weight : 21.5 t [10.75 t x 2]

23.7 U.S.ton [11.85 U.S.ton x 2]

Boom

PC750-7 : 7.4 t : 8505 x 2610 x 1500

8.2 U.S.ton : 27'11" x 8'7" x 4'11"

PC750SE-7 : 6.8 t : 7405 x 2465 x 1500

7.5 U.S.ton : 24'4" x 8'1" x 4'11"

Arm

PC750-7 : 4.0 t : 5105 x 1325 x 750

4.4 U.S.ton : 16'9" x 4'4" x 2'6"

PC750SE-7 : 4.9 t : 4075 x 1695 x 755

5.4 U.S.ton : 13'4" x 5'7" x 2'6"

Bucket

PC750-7 : 3.0 t : 2365 x 1850 x 1845

3.3 U.S.ton : 7'9" x 6'1" x 6'1"

PC750SE-7 : 3.4 t : 2200 x 1950 x 2105

3.7 U.S.ton : 7'3" x 6'5" x 6'11"

Boom & Arm cylinder

PC750-7 :Total 2.5 t 2.8 U.S.ton

PC750SE-7 :Total 2.6 t 2.9 U.S.ton

Others

Weight : 10.0 t 11.0 U.S.ton

Weight : 9.8 t

10.8 U.S.ton

Others

Weight : 10.0 t 11.0 U.S.ton

Weight : 9.8 t

10.8 U.S.ton

KOMTRAX (optional) with an antenna when mounted

Work equipment assembly (Loading shovel)

Width : 2320 7'7"

Weight : 18.7 t 20.6 U.S.ton

Base machine

(Both PC750-7 and PC750SE-7 are designed

with the same weight and dimensions.)

Width : 3390 11'1"

Weight : 45.5 t 50.2 U.S.ton

Others

Weight : 10.0 t 11.0 U.S.ton

Weight : 9.8 t

10.8 U.S.ton

KOMTRAX (optional) with an antenna when mounted

Work equipment assembly (Backhoe)

Weight : PC750-7 : 16.9 t 18.6 U.S.ton

PC750SE-7 : 17.7 t 19.5 U.S.ton

Boom

PC750-7 : 7.4 t : 8505 x 2610 x 1500

8.2 U.S.ton : 27'11" x 8'7" x 4'11"

PC750SE-7 : 6.8 t : 7405 x 2465 x 1500

7.5 U.S.ton : 24'4" x 8'1" x 4'11"

Arm

PC750-7 : 4.0 t : 5105 x 1325 x 750

4.4 U.S.ton : 16'9" x 4'4" x 2'6"

PC750SE-7 : 4.9 t : 4075 x 1695 x 755

5.4 U.S.ton : 13'4" x 5'7" x 2'6"

Bucket

PC750-7 : 3.0 t : 2365 x 1850 x 1845

3.3 U.S.ton : 7'9" x 6'1" x 6'1"

PC750SE-7 : 3.4 t : 2200 x 1950 x 2105

3.7 U.S.ton : 7'3" x 6'5" x 6'11"

Boom & Arm cylinder

PC750-7 :Total 2.5 t 2.8 U.S.ton

PC750SE-7 :Total 2.6 t 2.9 U.S.ton

1445 4'9"

1305 4'3"

5810 19'1"

5970 19'7"

( 2840 9'4")

2730 8'11"

6840 22'5"

( 3730 12'3")

3620 11'11"

70 2.8"

1600

5'3"500 1'8"

830 2'7"

3195 10'6"

1530 5'0"

1090 3'7"470 1'7"

1900 6'3"

37kg (82lb)

32kg (70lb) 50kg (110lb)

19kg (42lb)

3200 10'6"

500 1'8"

6840 22'5"

( 3730 12'3")

3620 11'11"

70 2.8"

1600

5'3"500 1'8"

830 2'7"

3195 10'6"

1530 5'0"

1090 3'7"470 1'7"

1900 6'3"

37kg (82lb)

32kg (70lb) 50kg (110lb)

19kg (42lb)

3200 10'6"

500 1'8"

70 2.8"

1600

5'3"500 1'8"

830 2'7"

3195 10'6"

1530 5'0"

1090 3'7"470 1'7"

1900 6'3"

37kg (82lb)

32kg (70lb) 50kg (110lb)

19kg (42lb)

3200 10'6"

500 1'8"

9500 31'2"

2885 9'4"

TRANSPORTATION GUIDE

Transportation specifications (length x height x width)

Backhoe

Specs shown include the following equipment:

PC750-7: Boom 8200 mm 26'11", Arm 3600 mm 11'10", Bucket 3.1 m34.05 yd3, Shoes 610 mm 24" double grouser

PC750SE-7: Boom 7100 mm 23'4", Arm 2945 mm 9'8", Bucket 4.0 m35.23 yd3, Shoes 610 mm 24" double grouser

3 Kits Transportation 4 Kits Transportation

LIFTING CAPACITY

Unit: kg lb

PC750-7

Equipment:

●Boom: 8.2 m 26'11"

●Arm: 5.6 m 18'4"

●Bucket: 2.8 m33.66 yd3

●Counterweight:

optional 12000 kg 26,460 lb

A: Reach from swing center

B: Bucket hook height

C: Lifting capacity

Cf: Rating over front

Cs: Rating over side

: Rating at maximum reach

*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.

HEAVY LIFTING "OFF"

Unit: kg lb

HEAVY LIFTING "ON"

Unit: kg lb

PC750SE-7

Equipment:

●Boom: 7.1 m 23'4"

●Arm: 2.9 m 9'8"

●Bucket: 4.0 m35.23 yd3

A: Reach from swing center

B: Bucket hook height

C: Lifting capacity

Cf: Rating over front

Cs: Rating over side

: Rating at maximum reach

HEAVY LIFTING "OFF"

Unit: kg lb

HEAVY LIFTING "ON"

*Load is limited by hydraulic capacity rather than tipping. Ratings are based on Standard No. J1097. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load.

Loading Shovel

Specs shown include the following equipment:

PC750-7 : Boom 4600 mm 15'1", Arm 3400 mm 11'2",

Bucket 4.5 m35.9 yd3, Shoes 610 mm 24" double grouser

3 Kits Transportation