Used Komatsu 120-8 Excavator

Reading: 2015

Komatsu PC120-8 Crawler Excavator Detailed Introduction

The Komatsu PC120-8 is a 12-ton class medium-sized crawler excavator launched by Komatsu Ltd., the global top-tier construction equipment manufacturer, as a core model of its high-efficiency -8 series. It integrates Komatsu's leading powertrain and hydraulic system technology, balances strong working performance, low operating cost, operator comfort and environmental compliance, and is recognized as a benchmark product in the 10-14 ton excavator segment worldwide.

1. Core Technical Specifications

Item	Parameter
Operating weight	11,800 – 12,600 kg (varies by configuration)
Engine model	Komatsu SAA4D95LE-5 water-cooled 4-cylinder turbocharged diesel engine
Rated net power	66 kW / 2,200 rpm
Emission standard	EU Stage IIIA / US EPA Tier 3
Standard bucket capacity	0.45 – 0.65 m³
Max. digging depth	5,520 mm
Max. digging height	8,790 mm
Max. dumping height	6,290 mm
Bucket digging force	90.1 kN
Arm digging force	63.7 kN
Swing speed	12.5 rpm
Travel speed	3.1 / 5.5 km/h (low/high)
Fuel tank capacity	247 L
Hydraulic oil capacity	100 L

2. Core Performance Advantages

2.1 High Efficiency & Ultra-low Fuel Consumption

Adopts high-pressure common rail fuel injection system and electronic engine control technology, matches Komatsu's exclusive ECO energy-saving mode, reduces comprehensive fuel consumption by 10-15% compared with the previous generation PC120-7, and the actual operating fuel consumption is only 6-9L per hour under standard working conditions.
Equipped with automatic idle and automatic shutdown functions: when the equipment is idle for more than 3 seconds, it automatically reduces the engine speed, and automatically shuts down after long-term idle to avoid unnecessary fuel waste.

2.2 Precise Hydraulic Control

Equipped with Komatsu mature CLSS (Closed-center Load Sensing System), which can accurately match the hydraulic flow output according to the operating load, ensure smooth compound action (such as simultaneous digging + swinging + lifting), no lag or jitter, and excellent micro-operation performance, which is very suitable for fine operations such as trenching, site leveling and pipeline laying.

3. Structural Durability Design

The boom, arm and bucket are made of high-strength wear-resistant steel, and all key welds are completed by robotic welding and stress relief treatment, which can resist cracking and deformation under long-term heavy load conditions, and the service life is increased by more than 20% compared with similar products.
The reinforced X-shaped chassis frame, supporting wheels, carrier rollers and track shoes are all made of wear-resistant alloy materials, and the track tensioning device with automatic adjustment function reduces the wear of chassis parts.
The whole machine has passed 1000 hours of extreme working condition test in high cold, high heat and high dust environment, and the failure rate is far lower than the industry average.

4. Operator Comfort & Safety

The cab meets ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certification, which fully protects the personal safety of operators in case of rollover or falling object accidents.
The fully sealed cab has a sound insulation effect of up to 72dB(A) internal noise, equipped with multi-directional adjustable suspension seats, fully automatic constant temperature air conditioning and low-effort operating joysticks, which greatly reduces the fatigue of long-term operation.
The high-definition LCD monitor displays real-time working parameters, fault codes and maintenance reminders in real time, and optional reverse camera reduces the blind area of operation.

5. Low Maintenance & Operating Cost

All maintenance points are arranged in the position accessible from the ground, no need to climb the car for daily inspection, which greatly improves the maintenance efficiency.
The oil change interval is extended to 500 hours, the hydraulic oil change interval is up to 5000 hours, and the maintenance cost per hour is reduced by more than 18% compared with similar products.
Komatsu has a global after-sales service and spare parts supply network, and the residual value of second-hand equipment is 10-15% higher than that of other brands of the same level, which is very popular in the construction equipment rental market.

6. Applicable Scenarios

The PC120-8 is suitable for a wide range of operating scenarios:

Municipal engineering: road repair, pipe trench excavation, green belt finishing
Small and medium-sized construction projects: foundation excavation, earthwork transfer
Agricultural and forestry projects: land leveling, tree pit digging, water conservancy trench excavation
Special operations: can be equipped with breakers, log grapples, quick couplers and other attachments to complete demolition, material handling and other work.

It is the ideal choice for small and medium-sized construction contractors and equipment rental operators.

Non flooded

No accident

Original product

Used Komatsu 120-8 Excavator

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