Used Komatsu 40 Excavator

Reading: 2009

Detailed Introduction to Komatsu 40 (Komatsu PC40 Series) Excavator

The Komatsu 40 generally refers to the Komatsu PC40 series 4-ton class compact mini excavator, a core best-selling model in Komatsu’s small construction equipment portfolio. Designed for high maneuverability, low operating cost and adaptability to narrow work scenarios, it has been widely used in global markets for decades, with mainstream upgraded versions including PC40-7, PC40-8, and the latest emission-compliant PC40MR-5 (MR stands for Minimum Radius short-tail design).

1. Core Specifications (For Latest PC40MR-5, Tier 4 Final / EU Stage V Compliant)

Item	Parameter
Operating Weight	3890 – 4180 kg (varies by bucket and attachment configuration)
Net Rated Power	24.4 kW / 32.6 HP at 2400 rpm
Standard Bucket Capacity	0.11 – 0.17 m³
Bucket Digging Force	30.2 kN
Arm Digging Force	16.7 kN
Max. Digging Depth	3510 mm
Max. Digging Height	5620 mm
Max. Dumping Height	3980 mm
Swing Speed	11 rpm
Travel Speed	2.2 km/h (low) / 4.5 km/h (high)
Tail Swing Overhang	Only 150 mm (almost no protrusion beyond track width when rotating)
Optional Retractable Track Gauge	Adjustable between 1300 mm (for narrow access) and 1700 mm (for stable operation)

2. Key Features

2.1 Ultra-narrow space adaptability

Its industry-leading short-tail swing design allows it to operate freely in spaces as small as 1.8 meters wide, making it ideal for work near buildings, indoors, or on narrow urban roads without risk of rear collision.

2.2 High efficiency & low fuel consumption

Equipped with a Komatsu-optimized powertrain and closed-center hydraulic system, it delivers smooth, precise compound movements (simultaneous boom lifting, swinging and traveling) with 10% higher work efficiency than peer models. Its average fuel consumption is only 3-5 L per working hour, and the emission control system adopts DOC technology without a DPF filter, reducing later maintenance costs.

2.3 Operator-friendly design

The fully pressurized sealed cab reduces dust ingress and keeps internal noise below 75 dB(A). It is fitted with a fully adjustable suspension seat, ergonomic control joysticks with low vibration, a high-definition LCD monitoring panel, and standard heating/air conditioning. The front windshield can be fully slid open for easy on-site communication.

2.4 Low maintenance cost

All daily maintenance points (oil filter, fuel filter, hydraulic oil filter, air filter) are arranged at ground-accessible positions, cutting routine pre-work maintenance time to less than 10 minutes. It is also equipped with Komatsu’s proprietary KOMTRAX™ remote monitoring system, which supports real-time tracking of equipment location, working hours, fuel consumption, maintenance reminders and fault codes for fleet management.

2.5 High versatility

It supports fast-connect interfaces for a wide range of optional attachments, including hydraulic breakers, grapples, augers, rippers, and milling machines, to meet demands of earthmoving, demolition, drilling, landscaping and road maintenance work.

3. Typical Application Scenarios

Urban municipal works: Trench digging for water/power/gas pipelines, sidewalk repair, small foundation construction
Landscaping and agriculture: Tree pit digging, land leveling, farm ditch excavation, nursery works
Confined space operation: Indoor demolition, basement construction, mall interior renovation (its small size allows it to enter elevators or narrow doorways)
Small-scale demolition: Demolition of illegal structures, small old buildings
Road maintenance: Pothole repair, curb trench digging, pole foundation drilling

4. Competitive Advantages

Compared with other 4-ton mini excavators in the market, the Komatsu PC40 series has:

Longer service life: Its structural parts are made of high-strength wear-resistant steel, with reinforced crawler tracks and chassis, 20% longer average trouble-free working time than peers
Higher residual value: The mature and stable hydraulic system and low failure rate make its second-hand resale price 12-18% higher than similar models
Global after-sales support: Komatsu’s global service network provides easily accessible spare parts and professional maintenance support, reducing downtime for users.

Non flooded

No accident

Original product

Used Komatsu 40 Excavator

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