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KOMATSU PC78US-8 Crawler Excavator

Permalink : http://product.cmsou.com/detail_MzY53---.html    Last Updated : 2013-08-16
KOMATSU PC78US-8 Crawler Excavator

KOMATSU PC78US-8 Crawler Excavator

  • Feature
  • Parameter

Performance and Versatility
• Standard auxiliary hydraulics
• Five working modes: Power, Economy, Lifting, Attachment, Breaker
• Three track options: rubber, steel, roadliner
• Automatic two-speed travel
• ISO/SAE pattern change valve

Service and Maintenance
• Wide-opening engine hood and side covers
• Side-by-side radiator and oil cooler are easily inspected
• Extended lubrication intervals
• Ground level maintenance
• Easy access to engine oil filter, engine main fuel filter, and fuel drain valve

KOMTRAX® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.

Operator Comfort
• Large cab with air conditioner
• Fully adjustable suspension seat with retractable seat belt
• Pilot proportional joystick controls are low effort
• Easy-to-see 7" multi-function color monitor
• Low-noise cab

Value, Durability, and Strength
• KOMTRAX® wireless equipment monitoring system
• High strength X-track frame
• Castings are used for boom foot and tip
• O-ring face seal hydraulic fittings
• Moisture/dust resistant electrical connectors

Peace of Mind
• Spacious cab with excellent visibility
• Neutral engine start system
• Thermal and fan guards
• Low emission Komatsu engine with dual element air cleaner
• One key operates the ignition and all machine locks

Model  Komatsu SAA4D95LE-5*
Type  Water cooled, 4-cycle, direct injection
Aspiration  Turbocharged, and air-to-air aftercooled
Number of cylinders  4
Piston displacement 199 in³ 3.26 ltr
Horsepower - Net (ISO 9249/SAE J1349) @ 1950 rpm 55 HP 41 kW
*EPA Interim Tier 4 and EU Stage 3A certified.
Main pumps:  
Type  Variable displacement, axial piston
Maximum flow 42.3 u.s. gal/min 160 ltr/min
Type  Fixed displacement gear
Maximum flow 16.6 u.s. gal/min 63 ltr/min
Hydraulic motors:  
Travel  2 x piston motor with parking brake
Swing  1 x piston motor with swing holding brake
Relief valve setting:  
Implement, travel circuit 3,840 psi 26.5 MPa / 270 kgf/cm²
Swing circuit 2,990 psi 20.6 MPa / 210 kgf/cm²
Blade circuit (Raise) 1,850 psi 12.7 MPa / 130 kgf/cm²
Blade circuit (Lower) 3,060 psi 21.1 MPa / 215 kgf/cm²
Travel speed:  
High 3.1 mph 5.0 km/hr
Low 1.8 mph 2.9 km/hr
Swing speed  10 rpm
Ground pressure 4.83 psi 0.34 kg/cm²
Max. drawbar pull 15,050 lbf 66.9 kN / 6820 kgf
Gradeability  35°
Bucket digging force (ISO) 13,780 lb 6250 kg
Arm crowd force (ISO) 7,760 lb .3520 kg
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