Specifications - Komatsu PC450-8 Brochure

PC450
H
Y D R A U L I C
-8
Q H
UARRY YDRAULIC
The PC450-8 is a specially designed for heavy-duty applica-
tions. The PC450-8 has strengthened work equipment and
reinforced body parts for use in severe job sites such as
quarry and gravel gathering, etc.
Fixed One-piece
Cab with Two-piece
Laminated Front
Pull-up Window
Window Glass
(optional)
The front window is
fixed and uses lami-
nated safety glass to
prevent scattering of
glass fragments when
broken.
Photo may include optional equipment.
Heavy-duty
Arm
Dent Preventing
Plates
Quarry Bucket
PC450-8 bucket is designed exclusively for quarry use and is
higher strength for impact and wear. Various parts of work
equipment are also strengthened.
O-ring Added
Side Reinforcement Plate O-ring is added between
16 mm 0.63" thickness high- bucket and linkage to prevent
tensile strength steel used. entrance of dirt.
Side Shrouds Bottom Wear Plate
19 mm 0.75" thickness high-
10
tensile strength steel used.
E
X C A V A T O R
E
XCAVATOR
Fixed Skylight and Sunshade
Deck Guard
Heavy-duty Boom
Strengthened Revolving
Frame Underguard
Full Roller Guard
Photo may include optional equipment.
Double-flange Track Roller
Double-flange rollers guide track link cor-
rectly and extends life of undercarriage.
Number of double-flange track rollers
PC450-8 . . . . . . . . . . . . .3 each side
Lip Corner Tooth PC450LC-8 . . . . . . . . . . .4 each side
Shrouds
Adapter
HYDRAULIC EXCAVATOR
S
PECIFICATIONS
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D125E-5
Type . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle, direct injection
Aspiration . . . . . . . . . . . . . . Turbocharged, aftercooled, cooled EGR
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 mm 4.92"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mm 5.91"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . 11.04 ltr 674 in
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
Meets EPA Tier 3 and EU Stage 3A emission regulations.
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 . . . . . . 1 – 185 mm x 1985 mm x 130 mm 7.3" x 78.1" x 5.1"
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
PC450
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
3
UNDERCARRIAGE
Center frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-frame
Track frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-section
Seal of track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealed track
Track adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
Number of shoes (each side):
PC450-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
PC450LC-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Number of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . 2 each side
Number of track rollers (each side):
PC450-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PC450LC-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
PC450-8 PC450LC-8
Operating Ground Operating
Shoes Weight Pressure Weight
80.7 kPa
600 mm 43320 kg 44320 kg
0.82 kgf/cm 2 0.78 kgf/cm
23.6" 95,500 lb 97,710 lb
11.7 psi
69.9 kPa
700 mm 43740 kg 44770 kg
0.71 kgf/cm 2 0.68 kgf/cm
27.6" 96,430 lb 98,700 lb
10.1 psi
0
-8
Ground
Pressure
76.8 kPa
2
11.1 psi
66.5 kPa
2
9.64 psi
11