Komatsu PC450

The Komatsu PC450 is a 45-ton class large hydraulic excavator designed for heavy construction, mining, and large-scale earthmoving applications. The most common variant is the PC450-8/PC450LC-8, with specifications verified by official Komatsu data .

Complete Specifications Table:

Working Range Parameters:

Performance Parameters:

Hydraulic System:

Transport Dimensions:

The PC450 features Komatsu’s CLSS (Closed Load Sensing System) hydraulics, which provides precise control, fast response times, and excellent fuel efficiency. The machine also comes standard with KOMTRAX® remote monitoring and location system for fleet management and theft prevention .

Based on industry data and operator reports, the Komatsu PC450 excavator has an average fuel consumption of approximately 20-25 liters per hour (5.3-6.6 gallons per hour) under normal working conditions .

Fuel Efficiency Factors:

Fuel Efficiency Optimization Tips:

1. Use Eco Mode – The PC450 features an active mode for fast cycle times that balances power and fuel efficiency

2. Reduce Idle Time – Excessive idling wastes fuel without productivity gain

3. Maintain Proper Track Tension – Incorrect tension increases rolling resistance

4. Keep Hydraulics Clean – Contaminated oil reduces system efficiency

5. Match Bucket to Material – Using the right bucket size reduces cycle time

The large 650 L (172 gal) fuel tank allows for 26-32 hours of continuous operation between refueling stops, making the PC450 ideal for remote job sites and extended shifts.

Cost Calculation Example (at $1.00/L diesel):

• Daily fuel cost (8 hours): $160 – $200

• Weekly fuel cost (40 hours): $800 – $1,000

• Monthly fuel cost (160 hours): $3,200 – $4,000

The Komatsu PC450’s powerful hydraulic system (690 L/min main pump flow) supports a wide range of heavy-duty attachments, making it highly versatile for mining, construction, and demolition applications .

Compatible Attachments and Specifications:

Bucket Link Compatibility:
The PC450 shares attachment linkage compatibility with other Komatsu models including PC400, PC400LC, PC400HD, and PC450LC series. A high-quality bucket link made from galvanized steel with multiple mounting points ensures secure attachment connection .

Attachment Selection Guide:

Auxiliary Hydraulics:
The PC450-8 comes equipped with auxiliary hydraulic piping and proportional control capability, allowing seamless attachment switching without manual reconfiguration.

⚠️ Important: Always verify attachment weight and flow requirements with the machine’s specifications. The Pro Model bucket link offers 6,500 kg load capacity for heavy-duty applications in mining .

Following the manufacturer’s recommended maintenance schedule is critical for maximizing the PC450’s service life and minimizing downtime. Below is the comprehensive maintenance schedule based on Komatsu’s official operation and maintenance manuals .

Daily Maintenance (Every 8-10 hours / Before Start):

Every 50 Hours (Weekly):

Every 250 Hours:

Every 500 Hours:

Every 1,000 Hours:

Undercarriage Maintenance:

Common Issues and Remedies :

Pro Tip: Komatsu’s built-in self-diagnostic monitor allows operators to check all working parameters from the moment the engine starts. The advanced Komatsu diagnostic system reduces diagnostic time and indicates components due for replacement .

Komatsu offers several variants of the PC450 platform, each designed for specific applications and regional requirements. Understanding the differences helps buyers select the right machine for their needs.

Model Comparison Table:

Detailed Variant Descriptions:

1. PC450-8 (Standard)

• The base model with standard track length

• Ideal for general construction and earthmoving

• Better maneuverability in confined spaces

• Serial numbers: 75001 and up

2. PC450LC-8 (Long Crawler)

• Features an extended track frame for increased stability

• Lower ground pressure – ideal for soft terrain

• Better lifting capacity due to larger footprint

• Preferred for heavy lifting and soft ground conditions

• Same engine and hydraulic system as standard model

3. PC450-7

• Previous generation model

• Slightly higher operating weight (45,000 kg)

• Larger bucket capacity range (2.2 – 3.1 m³)

• Features active mode for fast cycle times

• Still supported with parts including track adjuster and recoil assemblies

• Low vibration with cab damper mounting

4. PC450-8R (R Series)

• Updated version of the -8 model

• Serial numbers: 75001 and up

• May include regional-specific features

• Similar specifications to -8 base model

LC vs. Standard – When to Choose Which:

Regional Variants:

• PC450LC-7 (India market) : Features high-rigidity work equipment with cast end boom top, long replacement intervals for oils and filters, and continuous machine monitoring system

• PC450LC-8 (Africa market) : Comes standard with KOMTRAX remote monitoring, backed by regional service network

Parts Compatibility Note:
The PC450 shares many components across variants. Common parts include:

• Engine SAA6D125 series components

• Hydraulic pumps and control valves

• Bucket links and attachment interfaces

• Filter cartridges (engine oil: 600-21-1231, fuel filter: 600-311-8293)

Recommendation: For most applications, the PC450LC-8 offers the best balance of stability and productivity. Choose the standard PC450-8 if transport size is a primary constraint. The -8R series is preferred in regions requiring newer emission standards.