Used Komatsu 55 Excavator

Reading: 2009

Detailed Introduction to Komatsu 55 (PC55MR Series) Mini Excavator

The Komatsu 55 generally refers to the Komatsu PC55MR series 5-ton class compact crawler excavator, a star product in Komatsu's small construction equipment line developed by the global top-tier construction machinery manufacturer Komatsu Ltd. It is widely recognized in the global market for its high flexibility, fuel efficiency, durability and low operation cost, and is one of the best-selling models in the 4-6 ton small excavator segment.

Core Technical Specifications (Take the latest PC55MR-5 mainstream model as reference)

Parameter	Specification
Operating Weight	5,210 kg – 5,460 kg (varies with configurations: cab/canopy, bucket size, counterweight)
Engine	Komatsu 4D88E-7 water-cooled 4-cylinder diesel engine, rated power 36.2 kW / 2400 rpm, meets EU Stage V / US Tier 4 Final / China Non-road Stage IV emission standards (lower emission versions are available for emerging markets)
Bucket Capacity	0.09 m³ – 0.2 m³, standard bucket 0.16 m³
Digging Performance	Max. digging depth: 3,790 mm; Max. digging reach: 6,080 mm; Max. dumping height: 4,040 mm; Bucket digging force: 40.2 kN; Arm digging force: 25.6 kN
Maneuverability	Ultra-short tail swing radius: 1,280 mm (no overhang beyond crawler width when rotating); Travel speed: 2.8 km/h (low) / 4.6 km/h (high); Gradeability: 30° (58%)

Core Performance Advantages

1. High efficiency and low consumption

Equipped with Komatsu's exclusive closed-center load-sensing hydraulic system (CLSS), it realizes smooth composite operation (simultaneous digging, slewing and walking without lag) and precise action control. The electronic fuel injection control system optimizes power output matching, reducing comprehensive fuel consumption by 7-10% compared with the previous generation, while ensuring sufficient digging force for heavy-duty working conditions.

2. Adaptability to narrow spaces

The ultra-short tail swing design is its core selling point: it can operate freely in confined spaces such as indoor sites, urban narrow roads, pipeline trenches and residential areas, greatly expanding its application range.

3. High durability

The boom, arm and bucket are made of high-strength wear-resistant steel, with reinforced welding at stress concentration points. The heavy-duty undercarriage adopts reinforced track links, rollers and idlers, which can adapt to harsh working conditions such as rocky sites and muddy ground, with a service life 15% longer than similar products of other brands.

4. Easy maintenance

All daily maintenance points (engine oil check, fuel filter, air filter, hydraulic oil detection port) are arranged on the ground-accessible side, no need to climb the machine for routine inspection. The standard fuel water separator and drain port reduce the risk of engine failure caused by impure fuel, and the maintenance interval of wearing parts is extended to save user costs.

Operator Comfort & Safety

The standard cab is certified by ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure), with good sealing performance, and the interior noise is controlled below 74 dB(A) to reduce work fatigue.
Ergonomic layout: Adjustable suspension seat, low-force pilot control joystick, large panoramic glass for 360° no-blind-spot visibility. Optional configurations include air conditioning, USB charging port, rear view camera, etc.
Standard safety configurations include travel alarm, slewing alarm, emergency stop button, overheat and oil pressure alarm functions, to fully guarantee the safety of operators and surrounding personnel.

Typical Application Scenarios

The Komatsu PC55 series can be matched with a variety of accessories (hydraulic breaker, auger, snow plow, grapple, etc.) to adapt to diversified work demands:

Urban construction: Pipeline laying, cable trench excavation, small building foundation pit digging
Landscaping: Terrain shaping, tree planting pit excavation, irrigation ditch digging
Demolition work: Indoor demolition, small building dismantling, construction waste removal
Agricultural construction: Farmland leveling, livestock shed construction, ditch dredging
Municipal maintenance: Sidewalk renovation, road repair, winter snow removal

Comprehensive Use Value

Komatsu has a global after-sales service network, providing genuine spare parts supply and professional technical support. The PC55 series has an excellent market reputation, and its second-hand residual value rate is 15-20% higher than that of similar competing products, which can effectively reduce the comprehensive use cost for users.

Non flooded

No accident

Original product

Used Komatsu 55 Excavator

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