Used Komatsu 200-8 Excavator

Reading: 714

Here is a detailed English introduction to the Komatsu PC200-8 hydraulic excavator (commonly referred to as the Komatsu 200-8).

Komatsu PC200-8 Hydraulic Excavator: In-Depth Overview

The Komatsu PC200-8 is a 20-ton class hydraulic excavator that forms part of Komatsu's highly successful "Dash 8" series. Designed as a versatile workhorse for general construction, earthmoving, demolition, and utility applications, the PC200-8 builds upon the legacy of its predecessor with significant improvements in fuel efficiency, operator comfort, controllability, and environmental performance. It is recognized globally for its reliability, durability, and low total cost of ownership.

1. Engine and Emission Technology

At the heart of the PC200-8 is a Komatsu-designed and manufactured engine, the SAA6D107E-1. This is a 6.69-liter, 6-cylinder, turbocharged, aftercooled diesel engine that delivers a net output of 110 kW (148 HP) at 2,000 rpm. Key features include:

High-Pressure Common Rail (HPCR) Fuel Injection System: This electronically controlled system injects fuel at ultra-high pressures in multiple precise stages, resulting in more complete combustion, improved fuel efficiency, and reduced particulate matter (PM) emissions.
Exhaust Gas Recirculation (EGR): An integrated, cooled EGR system reduces nitrogen oxide (NOx) emissions by recirculating a portion of cooled exhaust gas back into the combustion chamber, lowering peak combustion temperatures.
Emissions Compliance: The engine is fully compliant with EPA Tier 3 (U.S.) and EU Stage IIIA emission regulations, making it an environmentally conscious choice for that era.
Heavy-Duty Cooling System: A side-by-side radiator and oil cooler arrangement optimizes cooling efficiency and simplifies cleaning, with the fan drive being hydraulically controlled for reduced parasitic load and noise.

2. Advanced Hydraulic System (HydrauMind)

The PC200-8 features Komatsu’s proprietary HydrauMind closed-center, load-sensing hydraulic system. This system is engineered to provide unmatched fine control and high efficiency:

Variable Displacement Piston Pumps: Two variable-displacement axial piston pumps supply oil only on demand, minimizing energy loss and fuel consumption.
Load-Sensing and Pressure-Compensated Valves: The system precisely matches hydraulic flow to the operator's lever input, regardless of load or engine speed. This allows for smooth, simultaneous operation of the boom, arm, bucket, and swing functions.
Six Working Modes: The operator can select from six working modes (P, E, L, B, and two user-customizable Power Max modes) via the monitor panel, tailoring engine speed and hydraulic output to the specific task—from heavy-duty digging to fine grading—to maximize fuel economy.
Smooth Compound Operation: HydrauMind excels in combined movements, such as straight-line trenching or lifting and swinging simultaneously, without any perceptible lag or shock.

3. Robust Structure and Undercarriage

Durability is a hallmark of the PC200-8, built to withstand the harshest job site conditions:

Reinforced Work Equipment: The boom, arm, and main frame structures undergo rigorous finite element analysis and are fabricated from high-tensile-strength steel with thick, cast components at critical stress points. Weld integrity is ensured through robotic welding processes.
X-Frame Undercarriage: The highly durable X-frame track frame design resists deformation and provides excellent stability. Track guards and reinforced track links are standard.
Lubricated Track Tension System: Sealed and lubricated track chains and idlers extend undercarriage life and reduce maintenance.
Hydraulic Cylinder Protection: All cylinders feature hardened, chrome-plated piston rods and oil-retaining seals to prevent dust ingress and oil leaks.

4. Operator Environment and Cab Comfort

The PC200-8 introduced a significant upgrade in operator comfort and safety with its spacious, low-noise cab:

ROPS/FOPS Certified Cab: The cab meets the Roll-Over Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) standards (ISO 12117-2), providing a secure environment.
Low Vibration and Noise: The cab is mounted on viscous dampers to isolate the operator from machine vibration. Interior noise levels are remarkably low, around 70 dB(A), reducing operator fatigue.
High-Resolution 7-inch LCD Monitor: A full-color, multi-lingual monitor provides at-a-glance access to machine health, operating data, fuel consumption history, and rear-view camera images. It also allows the operator to set attachments, select working modes, and configure service intervals.
Automatic Climate Control: A powerful and fully automatic air conditioning system with a high-capacity heater and defroster ensures a comfortable environment in any weather.
Ergonomic Controls: Low-effort PPC (Proportional Pressure Control) joysticks are integrated into the armrests for precise control with minimal hand movement. The suspension seat with lumbar support and retractable seatbelt absorbs shocks.

5. Simplified Maintenance and Serviceability

Komatsu engineered the PC200-8 for quick and easy daily checks and preventive maintenance, reducing downtime:

Centralized Service Points: Engine oil dipstick, fuel pre-filter, water separator, and hydraulic filter are grouped together at ground level behind a side door. The radiator, oil cooler, and aftercooler are easily accessible for cleaning.
Extended Service Intervals: The engine oil and filter change interval is up to 500 hours, and the hydraulic oil change interval can extend to 5,000 hours, significantly reducing maintenance costs.
Swing-Out Cooler and Condenser: The fuel cooler, air conditioner condenser, and aftercooler can be swung out horizontally without disconnecting hoses, allowing easy access for cleaning the cooling core.
KOMTRAX Remote Monitoring: This is a standard, fully integrated telematics system. KOMTRAX transmits machine location, operating hours, fuel consumption, load factor, and critical maintenance alerts via satellite and cellular networks to a secure website. Fleet managers can remotely monitor machine health and utilization, preventing misuse and scheduling proactive maintenance.

6. Key Technical Specifications (Standard Configuration)

Component	Specification
Operating Weight	19,800 – 20,900 kg (43,650 – 46,080 lbs)
Standard Bucket Capacity	0.80 – 1.00 m³ (1.05 – 1.31 yd³) heaped
Engine Model	Komatsu SAA6D107E-1
Engine Power (Net)	110 kW (148 HP) @ 2,000 rpm
Max. Digging Depth	6,620 mm (21’9”)
Max. Dump Height	7,110 mm (23’4”)
Max. Digging Reach	9,875 mm (32’5”)
Max. Drawbar Pull	178 kN (40,020 lbf)
Swing Speed	12.4 rpm
Travel Speeds (Low/High)	3.0 / 4.1 / 5.5 km/h (varies by market)
Fuel Tank Capacity	400 liters (105.7 US gal)
Hydraulic Tank Capacity	135 liters (35.7 US gal)
Overall Length (Transport)	~9,425 mm (30’11”)
Overall Width	~2,800 mm (9’2”)
Overall Height (to cab top)	~3,040 mm (10’0”)

7. Attachment Versatility

The PC200-8 is designed to handle a wide range of attachments, enhancing its utility. The monitor panel includes a dedicated attachment flow control menu. Common options include:

Various digging buckets (HD, SD, trenching, tilting)
Hydraulic breakers (hammer circuit with return filter is pre-configured)
Crushers and pulverizers (with optional two-way auxiliary hydraulic kit)
Grapples and thumbs
Compaction wheels

ConclusionThe Komatsu PC200-8 represents a balanced synergy of power, precision, and economy. While it has since been succeeded by newer Dash 10 and Dash 11 series models, the PC200-8 remains a highly respected and widely used machine in the secondary market due to its proven mechanical durability, straightforward electronics, and the comprehensive support network behind it. It stands as a benchmark in the 20-ton excavator class.

Non flooded

No accident

Original product

Used Komatsu 200-8 Excavator

RELATED PRODUCTS

Komatsu 400-8R

Komatsu 450-8

Komatsu 460-8

Komatsu 210LC-8