Used Komatsu 450-8 Excavator

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Detailed Introduction to Komatsu PC450-8 Crawler Excavator

The Komatsu PC450-8 is a 45-ton class heavy-duty crawler excavator developed and manufactured by Komatsu Ltd., the world-leading construction equipment manufacturer, as part of its upgraded -8 series excavator lineup. It is designed for high-load, long-cycle operation scenarios, balancing outstanding operation efficiency, fuel economy, structural durability and operator comfort, and is widely used in large-scale construction projects and mining operations around the world.

1. Core Specifications

Parameter	Details
Operating weight	44,100 kg – 45,900 kg (varies by boom, arm, bucket and counterweight configuration)
Engine	Komatsu SAA6D125E-5 6-cylinder, 4-stroke, turbocharged & aftercooled diesel engine
Rated power	257 kW (345 HP) @ 2,000 rpm
Emission standard	Compliant with EPA Tier 3 / EU Stage IIIA emission regulations
Standard bucket capacity	1.9 m³ – 2.7 m³, optional heavy-duty rock bucket up to 3.2 m³
Max. digging depth (standard configuration)	7,790 mm
Max. digging radius	11,940 mm
Max. digging height	10,700 mm
Travel speed	3.3 km/h (low) / 5.5 km/h (high)
Gradeability	70% (35°)
Ground pressure	79 kPa (standard track shoe)

2. Core Technical Advantages

2.1 High-efficiency Power & Hydraulic System

Equipped with Komatsu's proprietary Closed-center Load Sensing System (CLSS), which precisely matches hydraulic output to actual operation demand, eliminating unnecessary power loss and improving operation response speed by 12% compared with the previous PC450-7 model.
The electronically controlled high-pressure common rail fuel injection system optimizes combustion efficiency, reducing comprehensive fuel consumption by 10% to 15% under the same workload.
Multiple operation modes are available: Power mode (P mode) for high-load mining and heavy digging, Economy mode (E mode) for conventional earthmoving to save fuel, and Lifting mode for heavy hoisting operations. The automatic idle and auto-shutdown function further reduces unnecessary fuel waste during standby.

2.2 Ultra-high Structural Durability

The boom, arm and main frame are all made of high-strength alloy steel, with reinforced welding points and thickened stress areas, which can withstand long-term impact loads in quarry and open-pit mining scenarios.
The undercarriage system adopts hardened and tempered track shoes, support rollers and idlers, with 30% longer wear life than similar products in the same class. The sealed and lubricated track chain reduces maintenance frequency.
The engine and hydraulic system are equipped with multi-stage high-efficiency filters, which can adapt to low-quality fuel and harsh construction environments, reducing the risk of component wear.

2.3 Operator Safety & Comfort

The cab meets international ROPS (Roll-over Protective Structure) and FOPS (Falling Object Protective Structure) certification standards, effectively protecting operator safety in case of rollover or falling heavy objects.
The fully suspended shock-absorbing cab is fitted with a high-back adjustable air suspension seat, and internal operating noise is as low as 72 dB(A), creating a quiet and stable operating environment.
A 7-inch full-color LCD monitor displays real-time operation data, fault warnings, and maintenance reminders. A standard automatic air conditioning system and optional rearview camera further improve operation convenience.

2.4 Intelligent Management System

Equipped with Komatsu's exclusive KOMTRAX remote monitoring system, which supports real-time tracking of equipment location, operation hours, fuel consumption, fault codes and other data, making it convenient for fleet managers to carry out equipment scheduling and preventive maintenance, effectively reducing non-operational downtime.

3. Main Application Scenarios

The PC450-8 adapts to a wide range of heavy-duty operation scenarios:

Large-scale earthmoving for highway, railway, airport construction and land reclamation
Overburden removal, ore loading and stripping operations in open-pit mines and quarries
Foundation excavation and material transportation for water conservancy and hydropower projects
Large-scale building demolition with optional crushing hammer, hydraulic shear and other attachments
Bulk cargo loading and unloading in ports, freight yards and industrial sites

4. Maintenance & After-sales Support

Komatsu has a global after-sales service network covering more than 150 countries and regions, providing 24/7 technical support and original spare parts supply.
The regular maintenance interval is 500 operating hours, and the hydraulic oil replacement interval is up to 5,000 operating hours, which greatly reduces later operation and maintenance costs.
The PC450-8 has a very high residual value rate in the global second-hand construction equipment market due to its stable performance and high durability. Its average service life can reach 15,000 to 20,000 hours under standard maintenance conditions.

Summary

The Komatsu PC450-8 is a proven heavy-duty excavator verified by the global market for many years. It is the preferred equipment for contractors and mining operators pursuing high operation efficiency, low total cost of ownership and high reliability under long-term high-load working conditions.

Non flooded

No accident

Original product

Used Komatsu 450-8 Excavator

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