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Engine: Komatsu Excavators 454 HP @1800 RPM

The Komatsu PC800-7 excavator has a 6-cylinder Komatsu SAA6D140E-3 engine that produces 454 horsepower at 1800 RPM. It uses a fully hydrostatic drive system and has a maximum drawbar pull of 125,660 pounds. The undercarriage uses a sealed track chain, box-section track frame, and 47 shoes on each side. The hydraulic system uses two variable displacement piston pumps with a maximum flow of 130.5 gallons per minute to power the boom, arm, bucket, swing, and travel circuits.

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258 views2 pages

Engine: Komatsu Excavators 454 HP @1800 RPM

The Komatsu PC800-7 excavator has a 6-cylinder Komatsu SAA6D140E-3 engine that produces 454 horsepower at 1800 RPM. It uses a fully hydrostatic drive system and has a maximum drawbar pull of 125,660 pounds. The undercarriage uses a sealed track chain, box-section track frame, and 47 shoes on each side. The hydraulic system uses two variable displacement piston pumps with a maximum flow of 130.5 gallons per minute to power the boom, arm, bucket, swing, and travel circuits.

Uploaded by

Hariyanto oknes
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We take content rights seriously. If you suspect this is your content, claim it here.
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PC800-7

Komatsu Excavators 454 hp @1800 Rpm

Engine
Model Komatsu = SAA6D140E-3
Type 4-cycle = water-cooled, direct injection
Aspiration = Turbocharged and air-to-air aftercooled
Number of cylinders =6
Bore mm / Inch = 140 / 5.51”
Stroke mm / Inch = 165 / 6.50”
Piston displacement Ltr / in = 15.24 / 930”
Flywheel horsepower = 338 kW 454 HP @ 1800 rpm
(SAE J1349)
Governor = All-speed, electronic

Electrical System
Alternator = 50 amp, 24 V
Batteries = 170 Ah, 2 x 12 V
Starting motors = 11kW

Swing System
Driven method = Hydraulic motor
Swing reduction = Planetary gear
Swing circle lubrication = Grease-bathed
Swing lock = Oil disc brake
Swing speed = 6.8 rpm

Drive & Brakes


Steering control = Two levers with pedals
Drive method = Fully hydrostatic
Travel motor = Axial piston motor, in-shoe design
Reduction system = Planetary double reduction
Maximum drawbar pull = 559kN 57000 kg 125,660 lb
Gradability = 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
Track chain = Sealed
Track adjuster = Hydraulic
No. of shoes = 47 each side
No. of carrier rollers = 3 each side
No. of track rollers = 8 each side
Grouser = 610 mm 24'' double grouser

Hydraulic System
Type = Open-center load-sensing system
Main pump =2
 Main pump:
Type = Variable-capacity piston pumps
Pumps = Boom, arm, bucket, swing, and travel Circuits
 Maximum flow:
Main = 2 x 494 ltr/min 2 x 130.5 U.S. gpm
 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 4,550 psi
Travel circuit = 34.3 MPa 350 kg/cm 4,980 psi
Swing circuit = 28.4 MPa 290 kg/cm 4,120 psi
Heavy lift circuit = 34.3 MPa 350 kg/cm 4,980 psi
Pilot circuit = 2.9 MPa 30 kg/cm 430 psi
 Hydraulic cylinders:
Boom = 2 – 200 mm x 1950 mm 7.9" x 76.8"
Arm = 2 – 185 mm x 1610 mm 7.3" x 63.4"
Bucket Std = 1 – 185 mm x 1820 mm 7.3" x 71.7"
SE = 1 – 225 mm x 1420 mm 8.9" x 55.9"

Service Refill
Fuel tank = 880 ltr 232.5 U.S. gal
Radiator = 85 ltr 22.5 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. ga

Other
Counterweight = 12000 kg 26,450lb
Horn = Electric

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