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/cm
2
1.22 kgf/cm
2
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/cm
2
1.06 kgf/cm
2
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/cm
2
0.93 kgf/cm
2
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/cm
2
0.84 kgf/cm
2
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/cm
2
0.76 kgf/cm
2
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/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"
4245
13'11"
R=4300
14'1"
A
B
4500
14'9"
5810
19'1"
50
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"
2
1
3
0
4
5
6
7
8
9
10
11
12
14
13
1
2
3
4
5
6
7
8
10
11
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
G
F
H
8ft
B
D
C E
A
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
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
S
PECIFICATIONS
&
E
QUIPMENT
IP
-
S
PECIFICATIONS
&
E
QUIPMENTIP
10
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, 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 m
3
5.23 yd
3
backhoe 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 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
PC750-7
HYDRAULIC EXCAVATOR
