Used Komatsu 70-8 Excavator

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Komatsu PC70-8 Compact Hydraulic Excavator Detailed Introduction

The Komatsu PC70-8 is a 7-ton class compact crawler excavator developed by Komatsu Ltd., a global leading manufacturer of construction and mining equipment. As an optimized iteration of the classic PC70 series, it integrates Komatsu’s proprietary powertrain technology, intelligent hydraulic control system and reinforced structural design, balancing high work efficiency, low fuel consumption and operational reliability. It is one of the most widely used small excavator models in the global market.

1. Core Specifications (Standard Configuration)

Parameter	Specific Value
Operating Weight	6,800 – 7,100 kg
Rated Net Power	48.5 kW / 2,200 rpm (Komatsu SAA4D95LE-5 diesel engine)
Standard Bucket Capacity	0.3 – 0.38 m³
Max. Digging Depth	4,080 mm
Max. Digging Radius	6,260 mm
Max. Dumping Height	4,210 mm
Swing Speed	11.5 rpm
Travel Speed	2.8 km/h (low) / 4.5 km/h (high)
Fuel Tank Capacity	135 L
Emission Standard	EU Stage IIIA / US EPA Tier 3 (upgraded PC70-8M0 version for EU Stage V / China National IV markets is available)

2. Core Performance Advantages

2.1 High Efficiency & Low Fuel Consumption

Powered by the Komatsu original 4-cylinder water-cooled turbocharged engine, it is equipped with the exclusive Komatsu Energy Saving (ES) control system, providing 3 selectable working modes:

Power Mode: Output full power for heavy load operations such as hard rock excavation and lifting.
Economy Mode: Reduce unnecessary power loss for light load scenarios such as site leveling and trenching, cutting fuel consumption by 12-15% compared to the previous PC70-7 model.
Lifting Mode: Optimize hydraulic output stability for heavy material hoisting operations.

2.2 Smooth Hydraulic System

It adopts Komatsu’s mature closed-center load sensing hydraulic system (CLSS), which precisely matches the hydraulic pump output to actual operation load, realizing smooth compound movements (simultaneous digging, swinging and lifting) with minimal hydraulic loss. The boom regeneration function shortens cycle time for repeated digging operations, improving overall work efficiency by about 8%. The system is also equipped with overpressure protection and automatic oil temperature adjustment functions, extending the service life of hydraulic components.

2.3 Ultra-high Structural Durability

The main frame, boom, arm and bucket are all made of high-strength wear-resistant steel, with reinforced welding points at high-stress positions (boom root, arm joint, undercarriage frame) to adapt to harsh construction conditions.
The undercarriage adopts sealed and lubricated track links, heavy-duty track shoes and reinforced idlers, with a service life 20% longer than similar products in the same class.
The standard rock bucket is coated with wear-resistant layers at the cutting edge and bucket bottom, suitable for gravel and light rock excavation.

3. Operational Comfort & Safety

The cab is certified with ROPS (Roll-over Protective Structure) and FOPS (Falling Object Protective Structure), ensuring operator safety in case of rollover or falling object impacts.
Wide panoramic windows provide 360° no-blind-spot visibility, greatly reducing operation risks in narrow construction sites.
Ergonomic low-force joysticks, fully adjustable air suspension seats, and a large LCD monitor displaying real-time equipment status (fuel level, oil temperature, fault codes, etc.) reduce operator fatigue during long shifts.
The cab has excellent sealing performance, with internal noise controlled below 75 dB(A). Standard automatic air conditioning, AM/FM radio and USB charging ports further improve the working environment.

4. Easy Maintenance & Low Operating Cost

All daily maintenance points (engine oil filter, fuel filter, air filter, hydraulic oil return filter, etc.) are arranged at ground level for easy access, shortening routine maintenance time by 30% compared to older models.
The radiator and oil cooler adopt a parallel structure, which is easy to disassemble and clean, avoiding clogging in dusty construction sites.
The standard Komatsu KOMTRAX remote monitoring system supports real-time tracking of equipment location, working hours, fuel consumption and fault warnings, helping fleet managers arrange maintenance reasonably and improve asset management efficiency.
The hydraulic oil replacement interval is extended to 5,000 hours, and the engine oil replacement interval is 500 hours, greatly reducing long-term operating costs.

5. Application Scenarios & Optional Configurations

Typical Application Scenarios

The PC70-8 is suitable for a wide range of operation scenarios:

Municipal engineering: pipeline laying, road repair, landscaping, small building demolition
Rural construction: house foundation excavation, farmland water conservancy renovation, land remediation
Garden engineering: tree transplanting, trenching, site leveling
Material handling: bulk material loading and unloading, scrap sorting in recycling yards
Narrow space operations: workshop demolition and renovation, underground space construction

Optional Configurations

Customers can choose customized accessories according to actual needs:

Quick coupler for fast replacement of buckets, breakers, augers and other attachments
Hydraulic breaker pipeline kit for crushing operations
Rubber track pads to avoid damage to asphalt and cement pavements
Extended boom and arm for larger working range
Reverse camera, heated seat and other safety and comfort accessories

As a representative product of Komatsu’s small excavator line, the PC70-8 has won wide recognition from global users for its stable performance, low fault rate and high residual value, making it an ideal choice for both individual contractors and large construction fleets.

Non flooded

No accident

Original product

Used Komatsu 70-8 Excavator

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