Used Komatsu 360-8 Excavator

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Here is a detailed introduction of the Komatsu PC360-8 (often referred to simply as the Komatsu 360-8) hydraulic excavator, covering its background, key specifications, powertrain, hydraulic system, operator environment, structural durability, maintenance features, and intelligent technology.

Komatsu PC360-8 Hydraulic Excavator: Comprehensive Overview

The Komatsu PC360-8 is a 35- to 36-metric-ton class crawler excavator that belongs to Komatsu’s highly successful Dash-8 series. Designed for general construction, heavy earthmoving, quarry work, and infrastructure projects, it combines a powerful yet fuel-efficient engine with an advanced hydraulic system, robust structures, and a comfortable operator environment. The “LC” designation (PC360LC-8) indicates the standard long undercarriage variant that delivers excellent stability and lifting capacity, making it the most common configuration in this weight class.

1. Key Specifications at a Glance

Operating Weight: Approximately 35,300 – 36,000 kg (77,820 – 79,360 lb) depending on configuration, counterweight, and bucket selection.
Engine Model: Komatsu SAA6D114E-5
Net Flywheel Power: 202 kW / 271 HP @ 1,950 rpm (ISO 9249)
Gross Power: 205 kW / 275 HP
Bucket Capacity Range: 1.4 – 2.66 m³ (1.83 – 3.48 yd³); typical heavy-duty bucket is around 1.9 – 2.1 m³.
Max Digging Depth: 7,380 mm (24’3”)
Max Reach Along Ground: 11,100 mm (36’5”)
Max Cutting Height: 10,200 mm (33’6”)
Arm Crowd Force (ISO): 176 kN (39,560 lbf) with standard 2.98 m arm
Bucket Breakout Force (ISO): 229 kN (51,480 lbf)
Travel Speed (High/Low): 5.5 / 3.2 km/h
Tail Swing Radius: 3,450 mm (11’4”)

2. Engine and Emissions

The PC360-8 is powered by the Komatsu SAA6D114E-5, a 6-cylinder, water-cooled, turbocharged and aftercooled diesel engine that meets EPA Tier 3 and EU Stage IIIA emission standards. This electronically controlled, high-pressure common rail (HPCR) fuel injection system atomizes fuel at very high pressures for cleaner and more complete combustion. The result is a strong torque curve that provides high digging power while maintaining fuel economy.

An advanced EMMS (Equipment Management Monitoring System) continuously tracks engine performance and alerts the operator to any abnormalities. The engine is also equipped with a variable-speed fan and a large-capacity radiator and oil cooler to maintain optimal temperatures under heavy loads.

3. Hydraulic System: HydrauMind Technology

The heart of the PC360-8’s controllability is the HydrauMind (Hydraulic Mechanical Intelligence New Design) closed-center load-sensing hydraulic system. This system adjusts pump output precisely to match the flow and pressure required by the work equipment, eliminating unnecessary hydraulic losses. Key features include:

Variable displacement piston pumps delivering up to 2 x 288 L/min.
Multiple working modes: Active, Economy, Lifting, Breaker, and Attachment modes that allow the operator to tailor hydraulic response and fuel consumption to the task.
Independent arm and boom regeneration circuits that return oil from the cylinder head to the rod side, speeding up arm-in and boom-lower movements while saving energy.
Smooth combined operations, such as lifting and swinging simultaneously, without hesitation.

4. Rugged Structure and Durability

Komatsu designed the PC360-8 with a reinforced work equipment and undercarriage for long service life in demanding applications:

Boom and Arm: Fabricated from thick, high-tensile strength steel plates with internal baffle plates to resist torsional stress. Cast boom foot and arm tip sections increase durability. Weld quality is meticulously controlled, and critical joints are robotically welded.
Undercarriage: The LC model features a long, wide-track gauge and larger track links, sprockets, and idlers. Sealed and lubricated track chains reduce undercarriage wear, while the box-section track frame provides superior rigidity. Heavy-duty track shoes (standard 600 mm triple grouser) are available in various widths.
Reinforced Swing System: The swing circle uses a large-diameter ring with induction-hardened teeth, and a robust swing motor and planetary reduction gear ensure reliable performance during continuous truck loading.
Integrated Counterweight: A solid cast or fabricated counterweight provides excellent rear stability and can be removed for transport.

5. Operator Cab and Comfort

The PC360-8 features a spacious, ROPS/FOPS/OPG-certified cab designed to reduce operator fatigue:

Low Vibration: The cab is mounted on viscous rubber dampers that isolate the operator from machine vibrations. An optional air-suspension seat further improves comfort.
Low Noise: Sound levels inside the cab are as low as 70 dB(A) thanks to thick sound-absorbing insulation and tight sealing.
Climate Control: Automatic air conditioning with multiple vents ensures a comfortable environment in all weather conditions.
Ergonomics: Short-throw wrist-control levers (PPC) provide effortless proportional control. A large 7-inch LCD color monitor displays machine information, rear-view camera image, and Komtrax data. All switches are logically grouped for intuitive operation.
Visibility: The cab design provides a large glass area, a narrow front pillar, and a standard rear-view camera, giving excellent visibility to the trench, tracks, and rear.

6. Maintenance and Serviceability

Komatsu prioritized ease of maintenance to maximize uptime:

Ground-level access to engine oil, fuel filters, water separator, and coolant reservoir.
Wide-opening gull-wing doors on both sides of the engine compartment provide easy access to pumps, filters, and swing motor.
Extended replacement intervals: Engine oil and filter intervals of up to 500 hours, hydraulic oil interval of 5,000 hours, and high-capacity air cleaners with dual elements.
Battery master disconnect switch and centralized grease points simplify daily checks.
Komatsu Genuine Oil and Filter Monitoring integrated into the EMMS system.

7. Intelligent Machine Control and Komtrax

The PC360-8 is equipped with Komtrax, Komatsu’s proprietary wireless monitoring system. Through satellite and cellular networks, Komtrax transmits data such as:

Location (GPS tracking)
Operating hours and fuel consumption
Machine health alerts and fault codes
Service interval reminders
Utilization analysis (working vs. idling time)

This allows fleet managers to remotely monitor machine performance, schedule preventive maintenance, and even set geofencing boundaries for security. Many PC360-8 units can also be factory-prepared for integrated 3D machine control systems (such as Topcon or Trimble) to improve grading accuracy and efficiency.

8. Safety Features

Neutral safety start: Engine starts only when the hydraulic lockout lever is engaged.
Anti-slip plates and handrails on all service platforms.
Large mirrors and standard rear-view camera enhance all-around visibility.
Emergency engine stop switch accessible from ground level.
Travel alarm and optional rotating beacon alert surrounding personnel.

Summary

The Komatsu PC360-8 is a workhorse excavator that balances brute digging force with finesse and fuel efficiency. Its reliable Tier 3 engine, sophisticated hydraulic system, durable structures, and operator-friendly cab have made it a popular choice for contractors worldwide. Backed by Komatsu’s extensive parts and service network and the Komtrax fleet management system, the PC360-8 remains a benchmark in the 36-ton class for productivity, low operating costs, and long-term reliability.

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Used Komatsu 360-8 Excavator

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