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HITACHI - CRAWLER EXCAVATORS

HITACHI EX8000 Front Shovel




TECHNICAL DATA AND PHOTOS

Model: EX8000 Front Shovel
Manufacturer: Hitachi Construction Machinery
Type: Ultra large hydraulic front shovel.


ENGINE

Number of engines: 2
Model: HITACHI S16R-Y1TAA2
Type: Four-cycle, turbo charged and air cooled, intercooler, direct injection chamber-type diesel engine.
Cooling: water-cooled
Net power DIN 6271: 2 X 1400 kW (2 x 1 900 PS) at 1 600 rpm
Net power SAE J1349: 2 X 1400 kW (2 x 1 880 HP) at 1 600 rpm
Gross power SAE J1995: 2 X 1400 kW (2 x 1 880 HP) at 1 600 rpm
Maximum torque: 2 x 10 050 N·m (2 x 1 025 kgf·m, 2 x 7 410 lbf·ft) at 1 300 rpm
Number of cylinders: 2 x 16
Piston displacement: 2 x 65.4 L (2 x 3 990 in3)
Bore: 170 mm (6.7 in)
Stroke: 180 mm (7.1 in)
Starting system: 24 V electric motor
Cold starting: air heater
Batteries: 8 x 12 V, 220 Ah

HYDRAULIC SYSTEM

Main pumps: 16 variable-displacement, axial piston pumps for travel, swing and front attachment
Maximum oil flow: 16 × 500 L/min (16 x 132 US gpm, 16 x 110 Imp gpm)
Pressure setting: 29.4 MPa (300 kgf/cm2, 4 270 psi)

Pilot pumps:
Number: 2 gear pumps
Maximum oil flow: 2 × 110 L/min (2 x 29.1 US gpm, 2 x 24.2 Imp gpm)

Relief Valve Settings:
Pilot circuit: 4.4 MPa (45 kgf/cm2, 640 psi)
Swing circuit: 29.4 MPa (300 kgf/cm2, 4 270 psi)
Travel circuit: 29.4 MPa (300 kgf/cm2, 4 270 psi)
Implement circuit: 29.4 MPa (300 kgf/cm2, 4 270 psi)

HYDRAULIC CYLINDERS

Boom cylinders:
Number of cylinders: 2
Bore: 480 mm (18.9“)
Rod diameter: 340 mm (13.4“)

Arm cylinders:
Number of cylinders: 2
Bore: 390 mm (15.4“)
Rod diameter: 270 mm (10.6“)

Bucket cylinders:
Number of cylinders: 2
Bore: 390 mm (15.4“)
Rod diameter: 270 mm (10.6“)

Dump cylinders:
Number of cylinders: 2
Bore: 310 mm (12.2“)
Rod diameter: 180 mm (7.1“)


FLUID CAPACITIES:

Engine oil: 2 x 310 L (2 x 81.9 US gal, 2 x 68.2 Imp gal)
Engine coolant: 2 x 340 L (2 x 89.9 US gal, 2 x 74.8 Imp gal)
Pump transmission device: 2 x 50 L (2 x 13.2 US gal, 2 x 11 Imp gal)
Swing device: 6 x 75 L (6 x 20 US gal, 6 x 16 Imp gal)
Travel device: 2 x 475 L (6 x 126 US gal, 6 x 105 Imp gal)
Hydraulic system: 8 000 L (2 110 US gal, 1 760 Imp gal)
Hydraulic oil tank: 3 800 L (1 000 US gal, 840 Imp gal)
Fuel tank: 14 400 L (3 800 US gal, 3 170 Imp gal)


SWING MECHANISM

Swing speed: 3.2 rpm


TRAVEL SPEEDS

High: 0 to 2.0 km/h (0 - 1.2 mph)
Low : 0 to 1.4 km/h (0 - 0.9 mph)


UNDERCARRIAGE

Number of upper rollers: 3
Number of lower rollers: 7
Number of track shoes: 39
Shoe type: triple grousers
Shoe width: 1850 mm (73“)
Maximum traction force: 3 000 kN (306 000 kgf, 674 000 lbf)
Maximum gradeability: 60 % (30 degree) Ground pressure: 235 kPa (2.4 kgf/cm2, 34.1 psi)


DIMENSIONS

Overall width: 10 670 mm (73“)
Track width with 1 850 mm (73“) track shoes: 8 650 mm (28’5“)
Track gauge: 6 800 mm (22’4“)
Shoe width: 1 850 mm (73“)
Height to top of cab: 9 900 mm (32’6“)
Counterweight clearance: 3 430 mm (11’3“)
Ground clearance: 1 250 mm (4’1“)
Track length: 10 500 mm (34’5“)
Length to center of rollers: 7 900 mm (25’11“)
Rear-end swing radius: 8 280 mm (27’2“)
Rear-end length: 8 010 mm (26’3“)



WORKING RANGES

Bucket capacity (heaped): 40.0 m3 (52.3 yd3)
Maximum digging reach: 18 500 mm (60’7“)
Maximum cutting height: 20 500 mm (67’3“)
Maximum dumping height: 13 800 mm (45’3“)
Maximum digging depth: 4 100 mm (13’5“)
Working radius at maximum dumping height: 10 900 mm (35’9“)
Crowding force (SAE): 2 870 kN (293 000 kgf, 645 000 lbf)
Breakout force (SAE): 2 230 kN (227 000 kgf, 501 000 lbf)


OPERATING WEIGHT AND GROUND PRESSURE
Equipped with 40.0 m3 (52.3 yd3)(heaped) bottom dump bucket.

Shoe type: triple grousers
Shoe width: 1850 mm (73“)
Operating weight: 780 000 kg (1 720 000 lb)
Ground pressure: 235 kPa (2.4 kgf/cm2, 34.1 psi)


BUCKET

Type: Bottom dump type general purpose.
Capacity (heaped): 40.0 m3 (52.3 yd3)
Weight: 62 500 kg (138 000 lb)
Width: 5 600 mm (18’4“)
Number of teeth: 6


HITACHI EX8000 ultra large hydraulic front shovel
HITACHI EX8000 ultra large hydraulic front shovel of Western Coal.
Date of the photo: 19 April 2011
Size of the photo: 3072 × 2304 pixels, 1.87 MB
Camera model: Canon PowerShot A550



HITACHI EX8000 very large excavator and a man
HITACHI EX8000 very large excavator and a man.
Date of the photo: 19 April 2011
Size of the photo: 3072 × 1665 pixels, 3.20 MB





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