Komatsu PC200LC-7 Hydraulic Excavator Detailed Overview

[MikePhua]

Machine Background and Engine
The Komatsu PC200LC-7 is a versatile hydraulic excavator highly regarded for its combination of engine power, advanced hydraulic technology, and operator comfort. It is powered by a Komatsu SAA6D102E-2 engine delivering 107 kW (143 HP) at 1950 rpm, meeting EPA, EU, and Japan Tier 2 emissions standards. This turbocharged, air-to-air aftercooled engine balances power with fuel economy and low operating noise.
Hydraulic System and Performance

• The excavator features the HydrauMind system, integrating two variable displacement piston pumps for smooth, efficient hydraulic flow management across boom, arm, bucket, swing, and travel circuits.
  
• With a maximum hydraulic flow of 428 liters per minute (113 U.S. gallons per minute), it offers increased bucket digging force and speed, yielding a 29% improvement in bucket digging power compared to its predecessor.
  
• Four selectable working modes (Active, Economy, Lifting, Breaker) allow operators to tailor machine performance to the task, optimizing fuel efficiency or maximum productivity.
  
• Power Max function temporarily boosts digging force by 7% for tough digging conditions.
  
• The arm length options range between 2410 and 2925 mm (7'11" to 9'7"), with bucket capacities from 0.48 to 1.53 m³ (0.65 to 2.0 yd³).
  

Dimensions and Weights

• Overall length measures approximately 9495 mm (31 ft 2 in).
  
• Transport length varies between 5000 and 5885 mm (16 ft 5 in to 19 ft 4 in) depending on configuration.
  
• Height to top of boom is 2970-3190 mm (9 ft 9 in to 10 ft 6 in), with cab height around 3000 mm (9 ft 10 in).
  
• Operating weight ranges between 20,700 and 21,050 kg (45,640 to 46,410 lbs).
  
• It uses wide 800 mm (31.5 in) triple grouser shoes for stable ground contact and traction.
  

Operator Comfort and Features

• The cab volume is increased by 14% over previous models, offering a spacious and quiet environment.
  
• It includes a highly pressurized, air-conditioned cab with low noise and vibration, thanks to cab damper mounting.
  
• Visibility improvements include removal of the right side window pillar and reshaped rear pillar, reducing blind spots by 34%.
  
• Multi-position, pressure proportional control levers allow for seating and controller adjustment, maximizing operator comfort and productivity.
  
• Safety features include a pump/engine room partition to prevent oil spray, thermal and fan guards on hot parts, and non-slip steps with large handrails.
  

Additional Features

• The excavator benefits from a durable, sturdy frame structure enhanced through 3D CAD and FEM analysis to optimize strength and reduce weight.
  
• Major components like pumps, hydraulic motors, valves, and electronic devices are made in-house by Komatsu to ensure reliability.
  
• The machine provides automatic three-speed travel with shifts depending on pressure demand, enabling smooth operation on varying terrains.
  

Glossary of Terms

• HydrauMind: Komatsu’s dual-pump variable displacement hydraulic system for efficient power distribution.
  
• Triple Grouser Shoes: Track shoes with three raised sections providing grip on various ground surfaces.
  
• Power Max Function: Temporary hydraulic boost increasing digging force.
  
• Cab Damper Mounting: Suspension system reducing vibrations transmitted to the operator cabin.
  
• FEM Analysis: Finite Element Method used for structural optimization.
  

Conclusion
The Komatsu PC200LC-7 excavator blends power, precision, and operator comfort to excel in various construction, demolition, and excavation tasks. Its advanced hydraulics, strong structural design, and thoughtful operator-focused features contribute to productivity and safety. As part of Komatsu’s environmentally conscious machinery lineup, the PC200LC-7 offers fuel efficiency without compromising on performance, making it a dependable choice for demanding operators worldwide.