Used Komatsu 56-7 Excavator

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Komatsu PC56-7 Mini Hydraulic Excavator Detailed Introduction

The Komatsu PC56-7 is a classic 5-6 ton class compact hydraulic excavator under Komatsu's 7-series small excavator lineup. It is developed for light to medium-duty construction scenarios, balancing high operation efficiency, low fuel consumption, exceptional durability and operator comfort. It is one of the most popular small excavator models in the global market, widely favored by rental operators, small construction teams and municipal maintenance departments.

Core Specifications

Item	Parameter
Operating Weight	5,310 kg – 5,610 kg (varies by configuration)
Engine Model	Komatsu SAA4D88E-5 (Tier 3 / Stage IIIA emission compliant)
Rated Net Power	34.6 kW @ 2,400 rpm
Standard Bucket Capacity	0.22 m³ (optional 0.1–0.25 m³ buckets available)
Max. Digging Depth	3,850 mm
Max. Digging Height	5,760 mm
Max. Dumping Height	4,030 mm
Swing Speed	11 rpm
Travel Speed	2.8 km/h (low) / 4.5 km/h (high)
System Hydraulic Pressure	28 MPa
Fuel Tank Capacity	130 L
Safety Certification	ROPS (Roll-Over Protective Structure) + FOPS (Falling Object Protective Structure)

Key Features

1. High Fuel Efficiency & Reliable Power

The electronic fuel injection SAA4D88E-5 engine meets Tier 3/Stage IIIA emission standards, with low exhaust and noise performance.
Built-in Komatsu exclusive energy-saving system: automatic idle reduction activates when the machine is stationary for over 4 seconds, cutting unnecessary fuel waste. Users can switch between Power (P) mode for heavy-load operation and Economy (E) mode for light tasks, reducing comprehensive fuel consumption by 8-12% compared to same-class previous generation models.
The engine passes extreme environment adaptation tests, working stably at altitudes up to 4,000 m, in temperatures from -25℃ (with optional cold start kit) to 45℃.

2. Precise Smooth Hydraulic System

Adopts Komatsu patented CLSS (Closed-center Load Sensing System), which adjusts hydraulic flow output in real time according to load, ensuring smooth compound actions (simultaneous boom lift, arm swing, travel etc.) and excellent fine-tuning performance, suitable for precision works like slope trimming, tree pit digging and indoor demolition.
Original Komatsu hydraulic components have high matching degree and low failure rate, with extended hydraulic oil change interval of 2,000 working hours, reducing maintenance costs.

3. Reinforced Durable Structure

Boom, arm and main frame are made of high-strength wear-resistant steel, with reinforced welding at stress-concentrated parts, passing 1,000-hour extreme load test without deformation, adapting to harsh construction conditions.
X-type chassis is matched with high-strength steel track shoes (optional rubber tracks available for road protection), heat-treated supporting rollers, idlers and sprockets extend chassis service life by 20% compared to peer products.
Standard boom offset function: boom swings 65° left and 45° right, supporting wall-attached operation in narrow spaces like alleys, indoor sites and pipeline trenches, greatly improving operation flexibility in restricted areas.

4. Operator-Friendly Cab

Fully sealed sound-insulation design controls internal operating noise below 75 dB(A), greatly reducing long-hour operation fatigue.
Equipped with adjustable suspension seat, low-force ergonomic joysticks, and a high-definition LCD monitor displaying real-time data including fuel level, water temperature, working hours and fault codes for easy status checking.
Standard high-performance air conditioning with defrost function, wide vision, openable front windshield, and ROPS/FOPS certified structure to fully guarantee operator safety.

5. Convenient Maintenance

All daily maintenance points are arranged at ground-accessible positions on the machine side, no need to climb the body to replace filters or check hydraulic oil level, cutting maintenance time.
Built-in self-diagnosis system automatically identifies fault codes, supports optional KOMTRAX remote monitoring system for real-time positioning, fuel consumption tracking, fault warning and anti-theft management, reducing downtime.

Main Application Scenarios

Urban municipal works: pipeline laying, sidewalk renovation, small earthwork moving, green belt maintenance
Landscaping: tree pit digging, slope trimming, site leveling, garden construction
Interior demolition & renovation: compact body can enter elevators and indoor sites for demolition and waste removal
Agricultural construction: farmland ditching, orchard leveling, livestock farm construction
Rental market: high residual value, low failure rate and wide adaptability make it a best-selling model in the global small excavator rental market

Optional Configurations

Work attachments: hydraulic breaker, log grapple, auger drill, quick coupler, ripper
Rubber tracks or rubber track pads (to avoid damaging asphalt/cement pavement)
Cold start kit for low-temperature environments
Enhanced dozer blade
KOMTRAX remote monitoring system
Sunshade canopy (for users who do not need a closed cab)

The Komatsu PC56-7 has a very high residual value in the second-hand construction equipment market. Komatsu's global after-sales network also ensures sufficient spare parts supply and professional technical support for users in all regions.

Non flooded

No accident

Original product

Used Komatsu 56-7 Excavator

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