10
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D107E-1
Type . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle, direct injection
Aspiration. . . . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
107 mm
4.21"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
124 mm
4.88"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . .
6.69 ltr
408 in
3
Horsepower:
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross
149 kW
200 HP
ISO 9249 / SAE J1349 . . . . . . . . . . . . . . . . . Net
140 kW
187 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2050 rpm
Fan drive method for radiator cooling . . . . . . . . . . . . . . . Mechanical
Governor . . . . . . . . . . . . . . . . . . . . . . . . All-speed control, electronic
EPA Tier 3 and EU Stage 3A certified
HYDRAULICS
Type . . HydrauMind (Hydraulic Mechanical Intelligence New Design)
system, closed-center system with load sensing valves and
pressure compensated valves
Number of selectable working modes . . . . . . . . . . . . . . . . . . . . . . . 4
Main pump:
Type . . . . . . . . . . . . . . . . . . . . . Variable displacement piston type
Pumps for . . . . . . . . Boom, arm, bucket, swing, and travel circuits
Maximum flow. . . . . . . . . . . . . . . . . .
450 ltr/min
119 U.S. gal/min
Supply for control circuit . . . . . . . . . . . . . . . . . Self-reducing valve
Hydraulic motors:
Travel . . . . . . . . . . . . . . . 2 x axial piston motor with parking brake
Swing . . . . . . . . . . 1 x axial piston motor with swing holding brake
Relief valve setting:
Implement circuits . . . . . . . . . . . .
37.3 MPa
380 kgf/cm
2
5,400 psi
Travel circuit . . . . . . . . . . . . . . . .
37.3 MPa
380 kgf/cm
2
5,400 psi
Swing circuit . . . . . . . . . . . . . . . .
28.9 MPa
295 kgf/cm
2
4,190 psi
Pilot circuit . . . . . . . . . . . . . . . . . . . . .
3.2 MPa
33 kgf/cm
2
470 psi
Hydraulic cylinders:
(Number of cylinders – bore x stroke x rod diameter)
Boom . . . .
2 – 140 mm x 1300 mm x 100 mm
5.5" x 51.2" x 3.9"
Arm . . . . .
1 – 150 mm x 1635 mm x 110 mm
5.9" x 64.3" x 4.3"
Bucket . . . .
1 – 140 mm x 1009 mm x 100 mm
5.5" x 39.7" x 3.9"
DRIVES AND BRAKES
Steering control . . . . . . . . . . . . . . . . . . . . . . . Two levers with pedals
Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic
Maximum drawbar pull. . . . . . . . . . . . . .
249 kN
25400 kgf 56,000 lb
. . . . . . . . . . . . . . . . . . . . . . . . . . . *(
264 kN
26900 kgf 59,300 lb)
Gradeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70%, 35°
Maximum travel speed: High
5.5 km/h
3.4 mph *(
4.5 km/h
2.8 mph)
(Auto-Shift)
Mid
4.1 km/h
2.5 mph *(
3.3 km/h
2.1 mph)
Low
3.0 km/h
1.9 mph *(
2.8 km/h
1.8 mph)
Service brake
Hydraulic lock
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . .Mechanical disc brake
*with optional heavy duty travel motor
SWING SYSTEM
Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic
Swing reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Swing circle lubrication . . . . . . . . . . . . . . . . . . . . . . . Grease-bathed
Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock
Holding brake/Swing lock . . . . . . . . . . . . . . . . Mechanical disc brake
Swing speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.5 rpm
UNDERCARRIAGE
Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-frame
Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section
Seal of track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed track
Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
Number of shoes (each side)
PC270-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
PC270LC-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Number of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . 2 each side
Number of track rollers (each side)
PC270-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PC270LC-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
COOLANT AND LUBRICANT
CAPACITY
(REFILLING)
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
400 ltr
105.7 U.S. gal
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20.6 ltr
5.4 U.S. gal
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23.1 ltr
6.1 U.S. gal
Final drive, each side . . . . . . . . . . . . . . . . . . . . . .
8.5 ltr
2.2 U.S. gal
Swing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 ltr
2.2 U.S. gal
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . . . .
132 ltr
34.9 U.S. gal
OPERATING WEIGHT
(APPROXIMATE)
Operating weight including
5850 mm
19'2" one-piece boom,
3045 mm
10'0" arm, SAE heaped
1.26 m
3
1.65 yd
3
backhoe bucket,
rated capacity of lubricants, coolant, full fuel tank, operator, and
standard equipment.
11
WORKING RANGE
DIMENSIONS
BACKHOE BUCKET, ARM, AND BOOM COMBINATION
S
PECIFICATIONS
H
Y D R A U L I C
E
X C A V A T O R
HYDRAULIC EXCAVATOR
PC270
-8
PC270
-8
0
PC270-8
PC270LC-8
Operating
Ground
Operating
Ground
Shoes
Weight
Pressure
Weight
Pressure
600 mm
27140 kg
55 kPa
28040 kg
52 kPa
0.56 kgf/cm
2
0.53 kgf/cm
2
24"
59,830 lb
7.96 psi
61,820 lb
7.54 psi
700 mm
27700 kg
48 kPa
28640 kg
46 kPa
0.49 kgf/cm
2
0.47 kgf/cm
2
28"
61,070 lb
6.97 psi
63,140 lb
6.68 psi
800 mm
28050 kg
42 kPa
29020 kg
40 kPa
0.43 kgf/cm
2
0.41 kgf/cm
2
31.5"
61,840 lb
6.15 psi
63,980 lb
5.83 psi
Arm Length
2500 mm
8'2"
3045 mm
10'0"
3500 mm
11'6"
A
Overall length
9940 mm
32'7"
9860 mm
32'4"
9890 mm
32'5"
B
Length on ground (transport) : PC270-8
6090 mm
12'0"
5330 mm
17'6"
4930 mm
16'2"
: PC270LC-8
6255 mm
20'6"
5495 mm
18'0"
5095 mm
16'9"
C
Overall height (to top of boom)*
3310 mm
10'10"
3205 mm
10'6"
3280 mm
10'9"
PC270-8
PC270LC-8
D
Overall width
3190 mm
10'6"
3290 mm
10'10"
E
Overall height (to top of cab)*
3175 mm
10'5"
3180 mm
10'5"
F
Ground clearance, counterweight
1215 mm
4'0"
1215 mm
4'0"
G
Ground clearance (minimum)
498 mm
1'8"
498 mm
1'8"
H
Tail swing radius
2940 mm
9'8"
2940 mm
9'8"
I
Track length on ground
3700 mm
12'2"
4030 mm
13'3"
J
Track length
4625 mm
15'2"
4955 mm
16'3"
K
Track gauge
2590 mm
8'6"
2590 mm
8'6"
L
Width of crawler
3190 mm
10'6"
3290 mm
10'10"
M
Shoe width
600 mm
24"
700 mm
28"
N
Grouser height
30 mm
1.2"
36 mm
1.4"
O
Machine cab height
2225 mm
7'4"
2225 mm
7'4"
P
Machine cab width
2710 mm
8'11"
2710 mm
8'11"
Q
Distance, swing center to rear end
2905 mm
9'6"
2905 mm
9'6"
Arm
2500 mm
8'2"
3045 mm
10'0"
3500 mm
11'6"
A
Max. digging height
9620 mm
31'7"
10000 mm
32'10"
10130 mm
33'3"
B
Max. dumping height
6720 mm
22'1"
7035 mm
23'1"
7200 mm
23'7"
C
Max. digging depth
5940 mm
19'6"
6460 mm
21'2"
6940 mm
22'9"
D
Max. vertical wall
digging depth
4800 mm
15'9"
5650 mm
18'6"
5930 mm
19'5"
E
Max. digging depth
of cut for 8' level
5750 mm
18'10"
6320 mm
20'9"
6790 mm
22'3"
F
Max. digging reach
9650 mm
31'8"
10100 mm
33'2"
10570 mm
34'8"
G
Max. digging reach
at ground level
9450 mm
31'0"
9990 mm
32'9"
10390 mm
34'1"
H
Min. swing radius
3500 mm
11'6"
3430 mm
11'3"
3490 mm
11'5"
Bucket digging force
176 kN
176 kN
176 kN
at power max.
17900 kgf/39,460 lb
17900 kgf/39,460 lb
17900 kgf/39,460 lb
Arm crowd force
165 kN
136 kN
123 kN
at power max.
16800 kgf/37,040 lb
13900 kgf/30,640 lb
12500 kgf/27,560 lb
Bucket digging force
198 kN
198 kN
198 kN
at power max.
20200 kgf/44,530 lb
20200 kgf/44,530 lb
20200 kgf/44,530 lb
Arm crowd force
170 kN
138 kN
126 kN
at power max.
17300 kgf/38,140 lb
14100 kgf/31,080 lb
12800 kgf/28,220 lb
ISO rating SAE rating
Bucket Capacity
Number
(heaped)
Width
Weight
Arm Length
SAE, PCSA
CECE
Without Side Cutters
With Side Cutters
With Side Cutters
of Teeth
2.5 m
8'2"
3.0 m
10'0"
3.5 m
11'6"
1.14 m
3
1.49 yd
3
1.00 m
3
1.31 yd
3
1300 mm
51.2"
1405 mm
55.3"
793 kg
1,750 lb
5
1.26 m
3
1.65 yd
3
1.10 m
3
1.44 yd
3
1400 mm
55.1"
1505 mm
59.3"
845 kg
1,860 lb
5
A
H,Q
I
J
B
P
K
G
E
C
O
F
N
M
D,L
*
*
3
4
5
6
7
8
9
10
5
6
7
8
9
10
11
(m)
11
(m)
2
G.L.
2
1
0
-7
-6
-5
-4
-3
-2
-1
0
1
3
4
-8
2440(8ft)
H
A
C
B
E
D
G
F
: General purpose use, density up to
1.8 ton/m
3
1.52 U.S. ton/yd
3
: Light duty work, density up to
1.2 ton/m
3
1.01 U.S. ton/yd
3
□
: General purpose use, density up to
1.5 ton/m
3
1.26 U.S. ton/yd
3
X
: Not usable
*
: Including grouser height
