PC750-7 - Komatsu

FLYWHEEL HORSEPOWER 

338 kW 454 HP @ 1800 rpm 

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) 

OPTIONAL EQUIPMENT 

● Additional truck guard 

● Alternator, 75 Amp, 24 V 

● Arms (Backhoe): 

PC750-7: 

—3600 mm 11'10'' 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) 

www.Komatsu.com 

● 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 

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 

● 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 




● Spare parts for first service 

● Strengthened revolving frame underguard 

● Sun visor 

● Track frame undercover (center) 

● Travel alarm 

● Vandalism protection locks 

Printed in Japan 200801 IP. As(05) 

PC750-7 BACKHOE 

PC750SE-7 BACKHOE 

PC750-7 LOADING SHOVEL 

Photo may include optional equipment. 

OPERATING WEIGHT 

PC750-7: 72370– 74980 kg 

159,550– 165,300 lb 

PC750SE-7: 73170– 75780 kg 

161,310– 167,060 lb 

PC 

750 

HYDRAULIC EXCAVATOR 

CEN00301-01 

Materials and specifications are subject to change without notice 

is a trademark of Komatsu Ltd. Japan

PC750-7 Series Hydraulic Excavator 

WALK-AROUND 

Productivity Features 

● 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 

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. 

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. 

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. 

PC750-7 


FLYWHEEL HORSEPOWER 

338 kW 454 HP @ 1800 rpm 

OPERATING WEIGHT 


72370– 74980 kg 

159,500 – 165,300 lb 

PC750SE-7 

73170– 75780 kg 

161,310 – 167,060 lb 

● 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. 

Large handrail, step and catwalk 

provide easy access to the engine and 

hydraulic equipment. 

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. 

2 

3

PRODUCTIVITY 

FEATURES 

High Production and Low Fuel Consumption 

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 m 3 5.23 - 5.89 yd 3 

tank capacity (2750 

ltr 726.6 U.S. gal) 

Working Mode Selection 

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. 

Working Mode Application Advantage 

A 

Active 

Mode 

● Maximum production/power 

● Fast cycle times 

E Economy ● Good cycle times 

Mode ● Good fuel economy 

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. 

Smooth 

mode 

Boom raise 

Power 

mode 

Two Working Modes 

Heavy Lift Mode 

Swing Priority Mode 



Multi-Function 

Color Monitor 

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. 

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. 

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. 

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. 

Shockless Boom Control 

4 


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. 

Extend and 

retract 

5

RELIABILITY 

FEATURES 

Excellent Reliability and Durability 



MAINTENANCE 

FEATURES 

Easy Maintenance 

Komatsu designed the PC750-7 for easy service access. 

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. 

Sturdy Undercarriage Guard 

The undercarriage is strengthened to 

provide excellent reliability and durability 

when working on rocky ground 

or blasted rock. 

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. 

Wide Catwalk (optional) 

Wide walkway for maintenance is provided 

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. 

Motorized Grease Gun Equipped 

with Hose Reel (optional) 

Greasing is made easy with the electric 

motorized grease gun and indicator. 

Grease can drum storage location 

O-Ring Face Seal 

The hydraulic hose seal method has 

been changed from a conventional 

taper seal to an O-ring seal. This provides 

improved sealing performance 

during vibration. 

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. 

Metal Guard Rings 

Metal guard rings protect all the 

hydraulic cylinders and improve 

reliability. 

Sturdy guards shield the travel 

motors and piping against damage 

from rocks. 

Track roller guard (full length) 

(optional) 

DT-type connectors seal tight and 

have higher reliability. 

Reduced Maintenance Costs 

Hydraulic oil filter 

replacement is 

extended from 500 to 

1000 hours. 

Grease gun 

The grease gun can be 

reached from ground level. 

Indicator 

KOMTRAX ® System (optional) 

The KOMTRAX system monitors 

machine condition, operating status, 

operating location, etc., and provides 

timely notification of any machine problems. 

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 reliability. 

(There are some countries where this 

feature is not in service. Please consult 

Komatsu distributor for availability.) 


6 

7

WORKING 

ENVIRONMENT 



The cab interior is spacious and provides a 

comfortable working environment… 

Large Comfortable Cab 

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. 

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. 

Rubber 

Silicon 

Oil 

Spring 

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. 

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. 

Seat with headrest fully reclined 

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 ) 

Safety Features 

Engine/pump 

room partition 

Seat belt shown in photo is optional. 

8 

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 function 

keeps the inside of the cab 

comfortable throughout the year. 

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. 

Step light with timer 

provides light for about one 

minute to allow the operator 

to get off the machine safely. 

Thermal guards are placed 

around high-temperature 

parts of the engine and 

accessory drive. 

Large handrails (standard) and 

wide catwalk (optional) are provided 

around revolving frame for 

easier and safer access to engine 

and hydraulic components. 


9

SPECIFICATIONS 

& EQUIPMENTIP- 

BACKHOE DIMENSIONS 

B 

4245 13'11" 

R=4300 14'1" 

3195 10'6" 



10 

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 in 3 

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/cm 2 4,550 psi 

Travel circuit . . . . . . . . . . . . . . . 34.3 MPa 350 kg/cm 2 4,980 psi 

Swing circuit . . . . . . . . . . . . . . . 28.4 MPa 290 kg/cm 2 4,120 psi 

Heavy lift circuit . . . . . . . . . . . . . 34.3 MPa 350 kg/cm 2 4,980 psi 

Pilot circuit . . . . . . . . . . . . . . . . . . 2.9 MPa 30 kg/cm 2 430 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 

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 m 3 4.05 yd 3 backhoe bucket, operator, 

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 m 3 5.23 yd 3 backhoe bucket, operator, 

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



Operating Ground Operating Ground 

Shoes Weight Pressure Weight Pressure 

610 mm 72370 kg 

24" 159,550 lb 

710 mm 73170 kg 

28" 161,310 lb 

810 mm 73700 kg 

32" 162,480 lb 

910 mm 74340 kg 

36" 163,890 lb 

1010 mm 74980 kg 

40" 165,300 lb 

118 kPa 

73170 kg 

120 kPa 

1.20 kgf/cm 2 1.22 kgf/cm 2 

17.1 psi 

161,310 lb 

17.3 psi 

102 kPa 

73970 kg 

104 kPa 

1.04 kgf/cm 2 1.06 kgf/cm 2 

14.8 psi 

163,070 lb 

15.1 psi 

90.2 kPa 

74500 kg 

91.2 kPa 

0.92 kgf/cm 2 0.93 kgf/cm 2 

13.1 psi 

164,240 lb 

13.2 psi 

81.4 kPa 

75140 kg 

82.4 kPa 

0.83 kgf/cm 2 0.84 kgf/cm 2 

11.8 psi 

165,650 lb 

11.9 psi 

73.5 kPa 

75780 kg 

74.5 kPa 

0.75 kgf/cm 2 0.76 kgf/cm 2 

10.7 psi 

167,060 lb 

10.8 psi 

A 

C E 

A 

B 

D 

WORKING RANGE 

16 15 14 13 12 11 10 

14 

H 13 

12 

11 

10 

9 

8 

7 

6 

5 

4 

3 

2 

1 

9 8 7 6 5 4 3 2 1 0 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

8ft 

G 

F 


4500 14'9" 

5810 19'1" 

1560 5'1" 

3445 11'4" 

4000 13'1" 

50 

2.0" 

BACKHOE BUCKET, ARM, AND BOOM COMBINATION 

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

: General purpose use, density up to 1.8 t/m 3 3,000 lb/yd 3 : General purpose use, density up to 1.5 t/m 3 2,500 lb/yd 3 

—: Not useable 

3560 11'8" 

610 24" 

3500 11'6" 

4110 13'6" 

3390 11'1" 

When retracted 


840 2'9" 

Unit: mm ft in 


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 

E 

Max. vertical wall 

digging depth 

Max. digging depth 

of cut for 8' level 

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

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) 

Arm crowd force (SAE) 

Bucket digging force (ISO) 

Arm crowd force (ISO) 


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 

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 

237 kN 214 kN 181 kN 331 kN 


333 kN 333 kN 333 kN 431 kN 


250 kN 222 kN 183 kN 341 kN 


Without Side With Side WEIGHT 

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

m 3 yd 3 m 3 yd 3 mm 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 

11



LOADING SHOVEL DIMENSIONS 

LIFTING CAPACITY 

5640 18'6" 

9865 32'4" 

4245 13'11" 

R=4300 14'1" 

4500 14'9" 

5810 19'11" 

1560 5'1" 

3445 11'4" 

4000 13'1" 

50 

2.0" 

3560 11'8" 

3195 10'6" 

610 24" 

3500 11'6" 

4110 13'6" 

3390 11'1" 

When retracted 

840 2'9" 

B 

C 

HEAVY LIFTING "OFF" 

A 


Equipment: 

● Boom: 8.2 m 26'11" 

● Arm: 3.6 m 11'10" 

● Bucket: 3.1 m 3 4.05 yd 3 

with Heavy Lift On 

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

B Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs 

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 

HEAVY LIFTING "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 

Unit: kg lb 

Unit: kg lb 


12 

A 

B 

C 

11 10 

WORKING RANGE AND BUCKET SELECTION 

9 

8 

F 

7 

6 

5 

E 

D 

4 

3 

G 

11 

10 

9 

8 

7 

6 

5 

4 

3 

2 

1 

G.L. 

Working Range 

Type of bucket 

LOADING SHOVEL OPERATING WEIGHT 

Bottom dump 

Capacity–heaped 4.5 m 3 5.9 yd 3 5.1 m 3 6.7 yd 3 

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 

Arm crowd force 

Bucket Selection 

Type of bucket 

477 kN 48600 kg 107,140 lb 

404 kN 41200 kg 90,830 lb 

Bottom dump 

Capacity–heaped 4.5 m 3 5.9 yd 3 5.1 m 3 6.7 yd 3 

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 

digging and loading 

Light-duty 

excavation and loading 

Operating weight, including 4600 mm 15'1" boom, 3400 mm 11'2" arm, 4.5 m 3 5.9 yd 3 heaped bucket, operator, lubricants, coolant, full fuel 

tank and standard equipment. 

Shoes Operating Weight Ground Pressure 

610 mm 76000 kg 124kPa/1.26 kg/cm 2 

24" 167,550 lb 17.9 PSI 

2 

1 

0 

1 

2 

3 

4 


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 

*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. 

B 

C 


A 


Equipment: 

● Boom: 8.2 m 26'11" 

● Arm: 4.6 m 15'1" 

● Bucket: 2.8 m 3 3.66 yd 3 

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 Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs Cf Cs 

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 




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 


Unit: kg lb 

Unit: kg lb 

13



B 

C 

LIFTING CAPACITY 




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 




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 


B 

C 




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 

A 


Equipment: 

● Boom: 8.2 m 26'11" 

● Arm: 5.6 m 18'4" 

● Bucket: 2.8 m 3 3.66 yd 3 

● Counterweight: 

optional 12000 kg 26,460 lb 


Equipment: 

● Boom: 7.1 m 23'4" 

● Arm: 2.9 m 9'8" 

● Bucket: 4.0 m 3 5.23 yd 3 



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 

Unit: kg lb 

Unit: kg lb 

Unit: kg lb 

Unit: kg lb 

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 

Base machine 

(Both PC750-7 and PC750SE-7 are designed 

with the same weight and dimensions.) 

6840 22'5" 

Width : 3390 11'1" 

Weight : 45.5 t 50.2 U.S.ton 

–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 

32kg (70lb) 

50kg (110lb) 

32kg (70lb) 

50kg (110lb) 

32kg (70lb) 

50kg (110lb) 


14 15 

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 


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


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

Bucket 


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


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 

( 3730 12'3") 

3620 11'11" 

KOMTRAX (optional) with an antenna when mounted 

Others 


830 2'7" 

Weight : 9.8 t 

10.8 U.S.ton 

1900 6'3" 

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 m 3 4.05 yd 3 , Shoes 610 mm 24" double grouser 

PC750SE-7: Boom 7100 mm 23'4", Arm 2945 mm 9'8", Bucket 4.0 m 3 5.23 yd 3 , Shoes 610 mm 24" double grouser 

3 Kits Transportation 4 Kits Transportation 

3195 10'6" 

500 1'8" 

1530 5'0" 

1090 3'7" 470 1'7" 

1600 

5'3" 

3200 10'6" 

19kg (42lb) 

37kg (82lb) 

70 2.8" 

500 1'8" 

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 


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


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

Arm 


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


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

Bucket 


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


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 

Upper structure 

( 2840 9'4") 

2730 8'11" 

Width : 3195 10'6" 



Undercarriage 

5810 19'1" 

Weight : 21.5 t [10.75 t x 2] 

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

Others 


830 2'7" 

3195 10'6" 

1530 5'0" 


10.8 U.S.ton 

1900 6'3" 

500 1'8" 

5970 19'7" 

1090 3'7" 470 1'7" 

1445 4'9" 

1600 

5'3" 

3200 10'6" 

1305 4'3" 

19kg (42lb) 

37kg (82lb) 

70 2.8" 

500 1'8" 

Loading Shovel 

Specs shown include the following equipment: 

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

Bucket 4.5 m 3 5.9 yd 3 , Shoes 610 mm 24" double grouser 

3 Kits Transportation 

Work equipment assembly (Loading shovel) 

Width : 2320 7'7" 


Base machine 

(Both PC750-7 and PC750SE-7 are designed 

with the same weight and dimensions.) 

( 3730 12'3") 

3620 11'11" 

6840 22'5" 

Width : 3390 11'1" 



Others 


830 2'7" 

3195 10'6" 

1530 5'0" 


10.8 U.S.ton 

1900 6'3" 

9500 31'2" 

500 1'8" 

1090 3'7" 470 1'7" 

1600 

5'3" 

3200 10'6" 

2885 9'4" 

19kg (42lb) 

37kg (82lb) 

70 2.8" 

500 1'8"

PC750-7 - Komatsu

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