PC400
-8R
0
S
PECIFICATIONS
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D125E-5
Type . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle, direct injection
Aspiration. . . . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
125 mm
4.92"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
150 mm
5.91"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . .
11.04 ltr
674 in
3
Horsepower:
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross
270 kW
362 HP
ISO 9249 / SAE J1349 . . . . . . . . . . . . . . . . . Net
257 kW
345 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1900 rpm
Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical
Governor . . . . . . . . . . . . . . . . . . . . . . . . All-speed control, electronic
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 . . . . . . . . . . . . . . . . .
690 ltr/min
182 U.S. gal/min
Supply for control circuit . . . . . . . . . . . . . . . . . Self-reducing valve
Hydraulic motors:
Travel . . . . . . . . . . . . . . 2 x axial piston motors 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 . . . . . . . . . . . . . . . .
27.9 MPa
285 kgf/cm
2
4,050 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 – 160 mm x 1570 mm x 110 mm
6.3" x 61.8" x 4.3"
Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . except
2.4 m
7'10" arm
1 – 185 mm x 1820 mm x 120 mm
7.3" x 71.7" x 4.7"
Arm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . for
2.4 m
7'10" arm
1 – 185 mm x 1590 mm x 120 mm
7.3" x 62.6" x 4.7"
Bucket. . . . . .
1 – 160 mm x 1270 mm x 110 mm
6.3" x 50" x 4.3"
DRIVES AND BRAKES
Steering control . . . . . . . . . . . . . . . . . . . . . . . Two levers with pedals
Drive method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrostatic
Maximum drawbar pull. . . . . . . . . . . . . .
330 kN
33700 kgf 74,300 lb
Gradeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70%, 35°
Maximum travel speed: High . . . . . . . . . . . . . . . . .
5.5 km/h
3.4 mph
(Auto-Shift)
Mid. . . . . . . . . . . . . . . . . .
4.0 km/h
2.5 mph
(Auto-Shift)
Low . . . . . . . . . . . . . . . . .
3.0 km/h
1.9 mph
Service brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic lock
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical disc brake
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1 rpm
UNDERCARRIAGE
Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-frame
Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section
Seal of track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed track
Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
Number of shoes (each side):
PC400-8R. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
PC400LC-8R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Number of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . 2 each side
Number of track rollers (each side):
PC400-8R. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PC400LC-8R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
COOLANT AND LUBRICANT
CAPACITY
(REFILLING)
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
650 ltr
172 U.S. gal
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
36.0 ltr
9.5 U.S. gal
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37.0 ltr
9.8 U.S. gal
Final drive, each side . . . . . . . . . . . . . . . . . . . . .
10.5 ltr
2.8 U.S. gal
Swing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20.0 ltr
5.3 U.S. gal
Hydraulic tank . . . . . . . . . . . . . . . . . . . . . . . . . .
248 ltr
65.5 U.S. gal
OPERATING WEIGHT
(APPROXIMATE)
Operating weight including
7060 mm
23'2" one-piece boom,
3380 mm
11'1" arm, SAE heaped
1.9 m
3
2.49 yd
3
bucket, rated
capacity of lubricants, coolant, full fuel tank, operator, and standard
equipment.
PC400-8R
PC400LC-8R
Operating
Ground
Operating
Ground
Shoes
Weight
Pressure
Weight
Pressure
600 mm
41740 kg
77.8 kPa
42290 kg
73.3 kPa
0.79 kgf/cm
2
0.75 kgf/cm
2
23.6"
92,020 lb
11.3 psi
93,230 lb
10.6 psi
700 mm
42160 kg
67.3 kPa
42740 kg
63.5 kPa
0.69 kgf/cm
2
0.65 kgf/cm
2
27.6"
92,950 lb
9.76 psi
94,220 lb
9.24 psi
800 mm
42590 kg
59.5 kPa
43200 kg
56.2 kPa
0.61 kgf/cm
2
0.57 kgf/cm
2
31.5"
93,890 lb
8.63 psi
95,240 lb
8.15 psi
H
Y D R A U L I C
E
X C A V A T O R
PC400
-8R
R
ELIABILITY
F
EATURES
PC400
-8R
H
Y D R A U L I C
E
X C A V A T O R
Excellent Reliability and Durability
Fuel Main-filter
The reliability of fuel systems is
improved, because fuel main-filter
additionally installed removes contami-
nation and sludge contained in fuel.
Water Separator
Removes water from the fuel and
improves the reliability of fuel systems.
High Pressure In-line Filter
In-line filters are provided at outlet port
(pressure side) of each pump to
protect hydraulic system contamination.
In-line filters
Metal Guard Rings
Metal guard rings protect all the
hydraulic cylinders and improve
reliability.
Metal guard ring
(Cast iron ring)
Piston ring
Wear ring
Equipped with
Fuel Pre-filter
(with Water Separator)
Removes water and
contaminants in the
fuel to prevent fuel
problems.
DT-type Connectors
DT-type connectors seal tight and have
higher reliability.
Waterproof seal
Waterproof seal
Waterproof seal
10
Photo may include optional equipment.
11
