Komatsu PC78US Used Excavators Supply | Heavy Machinery Export

Product Introduction

This B2B product page details the technical specifications, structural advantages, and inspection protocols for a used Komatsu PC78US-8 excavator, offering global buyers a transparent procurement overview.

Product Information

Type:

Komatsu PC78US

Operating weight:

7365 kilograms

Bucket capacity:

0.28 cubic meters

Boom length:

3710mm

Stick length:

1650mm

Rotation speed:

11 revolutions per minute

Walking speed:

2.9-5.0 km/h

This inspected used Komatsu PC78US excavator offers international procurement managers a highly efficient, tight-tail swing solution for urban construction, road maintenance, and utility projects. Sourced directly from verified corporate fleets, this machine has undergone comprehensive mechanical diagnostics to ensure full functional compliance with international heavy machinery import standards. With its reduced tail swing radius, the unit provides exceptional stability and heavy lifting performance in confined work environments, bridging the gap between high operational efficiency and lower equipment capital expenditure.

Technical Specifications and Parameters

The operational data below is transcribed directly from the manufacturer’s technical data sheet and verified by our engineering team during the physical inspection process:

Machine Component & Performance	Technical Data Valuation
Machine Type	Komatsu PC78US
Operating Weight	7365 kg
Bucket Capacity	0.28 m³
Engine Model	Komatsu SAA4D95LE-5
Rated Output Power	41 kW
Engine Displacement	3.26 L
Number of Cylinders	4 Cylinders
Cooling Method	Water-cooling
Hydraulic Pump Type	Original Komatsu
Distribution Valve	Original Komatsu
Fuel Tank Capacity	125 L
Rotation Speed	11 rpm
Walking Travel Speed	2.9 km/h - 5.0 km/h
Gradeability Range	35° / 70°

Excavation Dimensions & Reach	Measurement Valuation
Boom Structural Length	3710 mm
Stick Structural Length	1650 mm
Bucket Digging Force	61.3 KN
Stick Digging Force	41.5 KN
Overall Transport Length	5770 mm
Overall Transport Width	2330 mm
Overall Transport Height	2555 mm
Maximum Excavation Radius	6380 mm
Maximum Excavation Depth	4100 mm
Maximum Excavation Height	7300 mm
Maximum Unloading Height	5180 mm
Maximum Vertical Excavation Depth	3610 mm

Engineering Advantages and Operational Performance

High-Efficiency Hydraulic Architecture

The integration of an original Komatsu hydraulic pump and distribution valve ensures seamless fluid power synchronization during simultaneous boom, arm, and bucket operations. The system delivers a concentrated bucket digging force of 61.3 KN and a stick digging force of 41.5 KN, allowing operators to penetrate compacted clay and rocky soils with minimal cycle times.

Balanced Power to Emission Ratio

Driven by the 41 kW Komatsu SAA4D95LE-5 water-cooled engine, this machinery maintains a stable thermal equilibrium under continuous heavy-duty loading cycles. The 3.26-liter displacement engine is optimized for high torque output at low operational RPMs, lowering hourly fuel consumption rates while maintaining high hydraulic flow rates.

Compact Urban Utility Design

Featuring a total transport width of 2330 mm and an operating weight of 7365 kg, the unit fits comfortably on standard transport trailers without requiring special oversized permits in most jurisdictions. The ultra-short tail swing profile permits full 11 rpm upper-structure rotation right next to structural walls, traffic barriers, or single-lane roadways.

Application Scenarios Across Industrial Sectors

Municipal Pipeline Installations

The 4100 mm maximum excavation depth and 3610 mm vertical digging depth make this machine highly suited for trenching water mains, gas pipelines, and underground electrical conduits along busy urban corridors.

Commercial Site Preparation

With a maximum unloading height of 5180 mm, the unit easily clears the sideboards of dual-axle dump trucks, facilitating efficient debris removal, topsoil stripping, and structural backfilling operations on commercial building plots.

Agricultural and Forestry Development

The 7365 kg operating weight provides excellent ground pressure distribution via its steel tracks, making it effective for land clearing, drainage ditch creation, and orchard terrace construction without causing excessive soil compaction.

Customization Options and Auxiliary Attachments

We provide tailored equipment modifications to align with local project specifications and safety requirements. Our engineering workshop can retrofit the machine prior to container loading or roll-on/roll-off dispatch.

Hydraulic Auxiliary Piping: Installation of dual-way high-pressure lines to support hydraulic breakers, sorting grabs, and rotary augers.
Track Customization: Option to swap standard steel track shoes for rubber track pads to protect asphalt surfaces in suburban job sites.
Quick Coupler Systems: Integration of mechanical or hydraulic quick-hitch systems to enable rapid bucket-to-attachment changeovers.
Cabin Protection Layouts: Addition of Falling Object Protective Structures (FOPS) and front mesh guards for forestry or demolition contracts.

Quality Control Inspection and Compliance Framework

Every second-hand earthmover undergoes a strict 150-point technical evaluation before being cleared for international sale. We maintain full transparency by documenting the exact mechanical status of key components.

Hydraulic Pressure Diagnostics: Testing the main pump pressure output under full load conditions to guarantee zero drift or internal oil bypass.
Structural Integrity Scanning: Ultrasonic testing on critical welds across the 3710 mm boom and 1650 mm stick to rule out micro-fractures or structural fatigue.
Engine Blow-By Analysis: Verifying compression levels across all 4 cylinders to confirm clean combustion and the complete absence of oil leaks.
Undercarriage Wear Mapping: Measuring link pitch, roller wear, and sprocket profiles to provide procurement managers with an accurate remaining service life assessment.

Logistics, Shipping, and International Delivery

Our logistics division manages the entire freight process, ensuring compliant customs clearance, secure export documentation, and safe packing procedures.

Disassembly and Container Loading: To minimize ocean freight expenses, our technicians can safely dismantle the arm, boom, and cabin to pack the unit securely within standard 40-foot High Cube containers.
Roll-On / Roll-Off (RoRo) Shipping: For buyers preferring immediate on-site deployment, the machine can be shipped fully assembled via specialized roll-on heavy vehicle vessels.
Anti-Corrosion Preparation: All exposed hydraulic cylinder rods are treated with industrial rust preventative coatings, and the entire machine is securely shrink-wrapped for maritime transport.
Document Package Provision: Every shipment is accompanied by the original bill of lading, commercial invoice, packing list, certificate of origin, and an independent third-party inspection certificate.

Frequently Asked Questions

What is the verified operational history of this used excavator?

Our inventory is sourced primarily from corporate fleet liquidations and civil engineering firms under strict maintenance schedules. We provide all available service logs, hour-meter verifications, and historical usage profiles upon request.

How do you guarantee the hydraulic system does not lose power under high temperatures?

During our pre-sale inspection, the oil cooling circuits and water-cooling structures are flushed and calibrated. The original Komatsu hydraulic valves are tested at peak operational temperature to ensure fluid viscosity and system pressure remain within the original manufacturer specifications.

Can you supply replacement parts for ongoing fleet maintenance?

Yes. We maintain an extensive inventory of genuine Komatsu wear parts, including hydraulic seal kits, fuel filters, track rollers, and replacement bucket teeth, which can be bundled into the shipping container with your machine purchase.

What are the standard payment terms for international bulk or single orders?

Our standard commercial terms require a wire transfer deposit upon contract signing, with the remaining balance due against the presentation of the ocean shipping documents and loading photos. Custom financial arrangements can be reviewed for long-term fleet procurement partners.