Used Komatsu 56-7 Excavator

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Komatsu PC56-7 Mini Hydraulic Excavator Detailed Introduction

The Komatsu PC56-7 is a 5-ton-class compact crawler excavator developed by Komatsu Ltd. for global small and medium construction scenarios. As a classic model of Komatsu’s -7 series small excavator lineup, it balances fuel efficiency, operation precision, durability and operator comfort, and is widely recognized as a benchmark product in the 5-6 ton small excavator segment, compliant with EU Stage IIIA / US Tier 3 emission standards (adjustable for different regional regulatory requirements).

1. Core Specifications

Item	Parameter
Operating Weight	5300 kg – 5610 kg (varies with configurations)
Engine	Komatsu SAA4D88E-5 4-cylinder water-cooled direct-injection diesel engine
Rated Power	34.6 kW (46.4 HP) @ 2400 rpm
Standard Bucket Capacity	0.22 m³ (optional range: 0.09 m³ – 0.3 m³)
Max Digging Depth	3860 mm
Max Digging Reach	6170 mm
Max Dumping Height	4130 mm
Swing Speed	11 rpm
Travel Speed	2.8 km/h (low) / 4.5 km/h (high)
System Working Pressure	24.5 MPa
Fuel Tank Capacity	130 L
Hydraulic Oil Tank Capacity	80 L
Overall Width	1960 mm (suitable for narrow working spaces)

2. Key Features

2.1 High-Efficiency Powertrain & Hydraulic System

Equipped with Komatsu’s self-developed closed-center load sensing system (CLSS), which ensures fast response and smooth composite actions (e.g. simultaneous boom lifting + swing, arm retraction + bucket curling) without speed lag, improving operation efficiency by 8-12% compared to similar models.
Automatic idle function reduces engine speed when the machine is stationary for more than 5 seconds, cutting fuel consumption by up to 15% in low-load scenarios, and extending engine service life.
Equipped with overload protection and hydraulic shock absorption functions, reducing component wear under heavy load operations.

2.2 Operator Comfort & Safety

The cab meets ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certification standards, ensuring operator safety in construction scenarios.
Fully enclosed cab with excellent sealing, internal operating noise as low as 72 dB(A), and standard heating and cooling air conditioning system, suitable for extreme temperature environments.
Equipped with adjustable suspension seat, ergonomic control levers, and a full LCD monitor that displays real-time working parameters, fault codes and maintenance reminders, reducing operation fatigue.
Standard hydraulic lock function: all working actions are disabled when the control lever is locked, avoiding misoperation risks. Travel alarm, reversing buzzer and wide-angle rearview mirrors are also standard to improve construction safety.

2.3 Durability & Reliability

Boom, arm and bucket are made of high-strength alloy steel, with reinforced welding points at high stress positions, which can adapt to long-term heavy-load operation.
Sealed and lubricated track chain, support rollers and idlers extend chassis service life, and the undercarriage is treated with anti-corrosion coating, suitable for wet and corrosive working environments.
All hydraulic pipelines use O-ring sealed joints, which greatly reduce the risk of hydraulic oil leakage.

3. Typical Applications

The compact size and flexible operation of the PC56-7 make it suitable for a wide range of scenarios:

Urban municipal works: pipeline laying, trench digging, road maintenance
Landscaping: site leveling, tree pit digging, landscape reshaping
Rural construction: residential foundation excavation, farmland water conservancy works
Narrow space operations: indoor demolition, tunnel construction, factory renovation
Material handling: bulk cargo loading, construction waste cleaning, orchard management

4. Optional Configurations

Work attachments: rock bucket, narrow ditch bucket, hydraulic breaker, hydraulic shear, auger drill, clamshell grab, quick coupler
Chassis accessories: heavy-duty dozer blade (for leveling and stability enhancement), rubber track (to avoid damage to asphalt pavement)
Intelligent configurations: Komatsu KOMTRAX remote monitoring system (supports real-time tracking of machine location, fuel consumption, fault alarm and maintenance reminder, suitable for fleet management), reversing camera, extra working lights, heated seat

5. Maintenance Advantages

All daily maintenance points (air filter, fuel filter, oil filter, coolant filling port) are arranged at ground-accessible positions, no need to climb the machine for maintenance, reducing maintenance time.
The radiator adopts a pull-out design, which is convenient for cleaning dust and debris in construction sites with high dust content.
Long maintenance intervals: engine oil replacement every 500 working hours, hydraulic oil replacement every 4000 working hours, reducing long-term use cost.
Komatsu’s global after-sales service network provides sufficient spare parts supply and professional technical support, reducing unexpected downtime.

Non flooded

No accident

Original product

Used Komatsu 56-7 Excavator

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