Used Komatsu 40 Excavator

Reading: 2007

Detailed Introduction to Komatsu PC40 Mini Excavator

The Komatsu PC40 is a 3-4 ton class compact mini excavator developed and produced by Komatsu Ltd., the world-renowned Japanese construction equipment manufacturer. As a star product in Komatsu’s mini excavator lineup, it is tailored for light and medium-duty operations in narrow working spaces, balancing high efficiency, excellent maneuverability, durability and low operating cost, and is widely favored by construction contractors, landscapers, rental operators and individual users worldwide. The series has undergone multiple generational upgrades, with the latest PC40MR-5 model complying with the strictest global emission standards including EPA Tier 4 Final, EU Stage V and China Non-road IV.

Core Technical Specifications

Item	Parameter
Operating Weight	3,800 – 4,200 kg (varies by configuration)
Engine Model	Komatsu 3D82E-5 water-cooled 3-cylinder diesel engine
Rated Power	28.5 kW / 2,400 rpm
Bucket Capacity	0.08 – 0.17 m³
Maximum Digging Depth	3,490 mm
Maximum Digging Radius	5,740 mm
Maximum Dumping Height	3,870 mm
Tail Swing Radius	1,380 mm (short-tail design, almost no overhang beyond track width)
Travel Speed	2.2 km/h (low) / 4.5 km/h (high)
Swing Speed	9.5 rpm
Hydraulic System Working Pressure	24.5 MPa
Fuel Tank Capacity	72 L
Undercarriage Width (standard/retractable optional)	1,700 mm / 1,400 – 1,700 mm

Key Performance Advantages

1. High-efficiency Low-emission Power System

The self-developed Komatsu diesel engine is matched with an optimized electronic fuel injection system, featuring sufficient power reserve, low fuel consumption (average fuel consumption of 3-4 L per hour under conventional working conditions) and low operating noise. It meets the latest global emission requirements, and can maintain stable operation even under high-load and high-altitude conditions.

2. Precision Hydraulic Control System

It adopts Komatsu’s proprietary closed-center load sensing system (CLSS), which realizes precise flow distribution according to actual operation demands. The compound actions (boom lifting, swing, bucket closing, etc.) are smooth and coordinated, with excellent micro-operation performance, which is very suitable for fine construction such as trench excavation and pipeline laying. The system also reduces unnecessary hydraulic energy loss, further lowering operating cost.

3. Ultra-compact Maneuverable Design

The short tail swing design ensures the rear of the excavator barely exceeds the track width when rotating, so it can operate freely in extremely narrow spaces such as urban alleys, indoor demolition sites, orchards and agricultural greenhouses. The optional retractable undercarriage can reduce the body width to 1.4m, making it easy to pass through narrow passages and transport on light trucks. The standard front dozer blade supports auxiliary leveling, backfilling and stability enhancement during sloping operations.

4. Industry-leading Durability

The main structural parts including boom, arm and undercarriage are made of high-strength wear-resistant steel, with reinforced welding points to adapt to harsh working conditions. The track, carrier rollers and idlers are all treated with special wear-resistant processes, which greatly extend the service life, and the whole machine has passed strict anti-rust and anti-corrosion tests, suitable for coastal and humid working environments.

Operator Comfort & Safety

The cab is ROPS (Roll-over Protective Structure) and FOPS (Falling Object Protective Structure) certified, which fully guarantees the safety of operators in case of rollover or falling object impact.
The spacious cab is equipped with a fully adjustable suspension seat, which effectively reduces vibration during long-term operation. The pilot control joystick has light operating force and short stroke, greatly reducing operator fatigue.
The internal noise is controlled below 72 dB(A), and the high-performance air conditioning system supports rapid cooling and heating, ensuring a comfortable working environment in extreme weather.
The wide field of view without dead angle allows operators to clearly observe the working state of the bucket and surrounding conditions. The full-color LCD instrument panel displays real-time operating data such as fuel level, oil pressure, hydraulic oil temperature and fault codes, so that operators can grasp the equipment status at any time.
Standard safety configurations include seat belt, emergency stop switch, fire extinguisher and reverse alarm.

Easy Maintenance & Management

All daily maintenance points are arranged at accessible positions on the side of the body, which can be checked and replaced directly on the ground without climbing, greatly improving maintenance efficiency.
Long maintenance intervals: 500 hours for engine oil and filter replacement, 2000 hours for hydraulic oil replacement, effectively reducing downtime and maintenance cost.
Optional Komatsu KOMTRAX remote monitoring system supports real-time tracking of equipment location, working hours, fuel consumption and fault information, which is very convenient for fleet management and anti-theft.

Typical Application Scenarios

Urban municipal works: Trench excavation for water, electricity, gas and communication pipelines, sidewalk construction, small foundation digging, indoor demolition and renovation.
Landscaping and agriculture: Tree planting pit digging, land leveling, orchard ditching and fertilization, greenhouse construction and farmland renovation.
Rental market: With high versatility, low failure rate and easy operation, it is one of the most popular models in the global mini excavator rental market.
Small engineering projects: Small house construction, garbage cleaning, small-scale demolition and material handling.

Optional Configurations

Various buckets: Standard digging bucket, narrow bucket, rock bucket, mud bucket.
Work attachments: Hydraulic breaker, log grapple, auger drill, ripper, etc.
Quick coupler: Realizes fast switching of different attachments within 1 minute, greatly improving operation efficiency.
Rubber track: Avoids damage to asphalt and concrete pavement, suitable for urban road operation.
Auxiliary hydraulic lines, enhanced dozer blade, heated seat, extra working lights, etc.

Non flooded

No accident

Original product

Used Komatsu 40 Excavator

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