DRIVES AND BRAKES
Steering control . . . . . . . . . . . . . . . . . . . . . . . Two levers with pedals
Drive method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully hydrostatic
Travel motor . . . . . . . . . . . . . . . . . Axial piston motor, in-shoe design
Reduction system. . . . . . . . . . . . . . . . . . . . Planetary triple reduction
Maximum drawbar pull. . . . . . . . . . . . . 559 kN 57000 kg 125,660 lb
Gradeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
Seal of track. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . 980 ltr 258.9 U.S. gal
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 ltr 26.4 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)
PC800-8: 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.
PC800SE-8: 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.
12
13
SPECIFICATIONS
HYDRAULIC EXCAVATOR
PC800-80
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-5
Type . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injection
Aspiration . . . . . . . . . . . . . . Turbocharged, aftercooled, cooled EGR
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 mm 5.51"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 mm 6.50"
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in
3
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, electronic
Horsepower:
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross 370 kW 496 HP
ISO 9249 / SAE J1349* . . . . . . . . . . . . . . . . . Net 363 kW 487 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800 rpm
Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic
EPA Tier 3 and EU stage 3A emissions certified.
*Net horsepower at the maximum speed of radiator cooling fan is 338 kW 454HP.
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 . . . . . . . . . . . . 2 x 494 ltr/min 2 x 130.5 U.S. gpm
Fan drive pump . . . . . . . . . . . . . . . . . . Variable capacity piston type
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 motors
Swing reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Swing circle lubrication . . . . . . . . . . . . . . . . . . . . . . . Grease-bathed
Swing lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil disc brake
Swing speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.8 rpm
PC800-8 PC800SE-8
Operating Ground Operating Ground
Shoes Weight Pressure Weight Pressure
610 mm 74200 kg
121 kPa
75200 kg
122 kPa
1.23 kgf/cm
2
1.24 kgf/cm
2
24" 163,580 lb
17.5 psi
165,790 lb
17.6 psi
710 mm 75000 kg
105 kPa
76000 kg
106 kPa
1.07 kgf/cm
2
1.08 kgf/cm
2
28" 165,350 lb
15.2 psi
165,550 lb
15.4 psi
810 mm 75530 kg
92.2 kPa
76530 kg
93.2 kPa
0.94 kgf/cm
2
0.95 kgf/cm
2
32" 166,510 lb
13.4 psi
168,720 lb
13.5 psi
910 mm 76170 kg
83.3 kPa
77170 kg
84.3 kPa
0.85 kgf/cm
2
0.86 kgf/cm
2
36" 167,920 lb
12.1 psi
170,130 lb
12.2 psi
1010 mm 76810 kg
75.5 kPa
77810 kg
76.5 kPa
0.77 kgf/cm
2
0.78 kgf/cm
2
40" 169,340 lb
10.9 psi
171,540 lb
11.1 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
PC800-8 PC800SE-8
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" 6145 mm 20'2" 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
PC800-8 PC800SE-8
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 4690 mm 15'5" 5630 mm 18'6" 6260 mm 20'6" 4615 mm 15'2"
B Overall Length 14405 mm 47'3" 14435 mm 47'4" 14115 mm 46'4" 13130 mm 43'1"
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
PC800-8 (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" 1880 74.0" 2960 6,530
3.4 4.45 3.0 3.92 1820 71.7" 1920 75.6" 3500 7,720 — —
PC800SE-8 (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
H YDRAULIC E XCAVATOR
PC800-8
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