Used Komatsu 56-7 Excavator

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Detailed Introduction to Komatsu PC56-7 Compact Hydraulic Excavator

The Komatsu PC56-7 is a 5-ton class high-performance compact hydraulic excavator manufactured by Komatsu Ltd., the global leading construction equipment provider. As a classic model in Komatsu’s 7-series mini excavator lineup, it is designed to balance high work efficiency, low operating cost, durability and operator comfort, meeting EPA Tier 3 / EU Stage IIIA emission standards, and is widely favored by individual contractors, small engineering teams and municipal maintenance departments worldwide.

1. Key Specifications

Item	Parameter
Operating Weight	5210 kg – 5510 kg (varies by configuration)
Engine Model	Komatsu S4D84E-5 water-cooled 4-stroke diesel engine
Rated Power	34.6 kW @ 2400 rpm
Standard Bucket Capacity	0.2 m³ (optional 0.05–0.22 m³ buckets)
Max. Digging Depth	3850 mm
Max. Digging Height	5760 mm
Max. Dumping Height	4040 mm
Tail Swing Radius	1270 mm (short-tail design for confined spaces)
Swing Speed	9 rpm
Travel Speed	2.8 km/h (low) / 4.3 km/h (high)
Gradeability	58% (30°)
Ground Pressure	33 kPa (wide track) / 40 kPa (narrow track)
Fuel Tank Capacity	130 L
Hydraulic System Working Pressure	24.5 MPa
ROPS/FOPS Certified Cab	Standard

2. Core Performance Advantages

2.1 High Efficiency & Low Fuel Consumption

Equipped with Komatsu’s proprietary optimized load-sensing hydraulic system, which reduces pressure loss and matches power output with actual workload precisely. The built-in ECO mode cuts fuel consumption by up to 12% without obvious loss of working efficiency.
Automatic low-idle function reduces fuel waste during standby and frequent start-stop operations, greatly lowering daily operating costs.

2.2 Outstanding Durability & Reliability

Reinforced boom, arm and bucket made of high-strength wear-resistant steel, with dust-sealed hinge points that extend the service life of structural parts by more than 20% compared to same-class products.
Heavy-duty undercarriage components (track shoes, idlers, support rollers) adopt Komatsu’s original wear-resistant process, suitable for long-term operation on rough construction sites.
Multi-stage filtration system for engine and hydraulic oil ensures high fluid cleanliness, reduces failure rate and extends oil change intervals.

2.3 Operator Comfort & Convenience

Fully sealed, noise-insulated cab with ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certification, ensuring operator safety.
Adjustable suspension seat, ergonomic low-force pilot control levers, and high-performance air conditioning system reduce fatigue during long-hour operation.
Multifunctional LCD monitor displays real-time operating data (fuel level, water temperature, fault codes, working hours) for easy condition checking. Built-in 12V power port and storage compartments meet daily use needs.

2.4 Easy Maintenance & Management

All daily maintenance points (air filter, oil filter, fuel filter, oil dipstick) are designed to be accessible from the ground, no need to climb onto the machine for routine service.
Detachable radiator guard makes cleaning of cooling components fast and convenient, suitable for high-temperature and dusty working conditions.
Optional Komatsu KOMTRAX telematics system supports remote monitoring of equipment location, working hours, fuel consumption and fault warning, helping users realize intelligent fleet management and reduce unplanned downtime.

3. Typical Application Scenarios

The PC56-7 is suitable for a wide range of small and medium-sized construction scenarios:

Urban municipal works: pipeline trenching, road repair, sidewalk renovation
Landscaping: terrain shaping, tree planting pit digging, landscape construction
Rural construction: house foundation excavation, irrigation ditch digging, homestead leveling
Narrow-space operations: indoor demolition, old town renovation, construction in narrow alleys
Auxiliary works: material handling, breaking operations (with hydraulic breaker), snow removal

4. Optional Attachments & Configurations

Users can choose customized configurations according to working needs:

Working attachments: heavy-duty wear-resistant bucket, hydraulic breaker, auger, wood grapple, ripper
Accessory configurations: quick coupler (for fast attachment change), reinforced dozer blade, wide/narrow track set, auxiliary hydraulic pipeline, sun canopy (for warm regions), heated cab (for cold regions)

Summary

As a proven model with global sales of over 100,000 units, the Komatsu PC56-7 has low failure rate, low long-term operating cost and high residual value, which delivers fast return on investment for users. It is one of the most popular 5-ton class compact excavators in the global market.

Non flooded

No accident

Original product

Used Komatsu 56-7 Excavator

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