Used Komatsu PC78US Hydraulic Crawler Excavator | 7.5 Ton Ultra Short Tail Swing | Original SAA4D95LE Turbo Engine, Offset Boom & Global Export Ready

Price & MOQ (Purchase Information)

* The final quotation is subject to the machine's production year, actual working hours, undercarriage wear condition, bucket configuration and complete maintenance records. Please contact our sales team for an exact price and real-time inventory status.

Product Overview

The Komatsu PC78US is a benchmark 7.5-ton ultra-short-tail-swing compact hydraulic crawler excavator, originally manufactured in Japan. As the representative model of Komatsu's US series, it features an industry-leading zero-tail design and offset swing boom, delivering near-6-ton-level maneuverability while matching 8-ton-class digging performance. It is purpose-built for confined urban construction sites, indoor demolition, municipal pipeline works, road maintenance and landscaping projects where space is extremely limited.

All our used PC78US excavators are sourced from formal authorized import channels with 100% original core components, no structural collision or rollover history, and traceable regular maintenance records. Each unit undergoes a strict 100-point pre-delivery comprehensive inspection, including engine load test, hydraulic system pressure detection, track wear measurement and full electrical circuit verification. Purchasing this used Komatsu excavator only costs 40%-55% of a brand-new unit, with fast capital return and wide application scenarios, making it an ideal choice for medium and small contractors, municipal engineering teams and equipment rental companies.

Core Product Advantages

• Original Komatsu SAA4D95LE four-cylinder water-cooled turbocharged diesel engine, net power 48.8 kW (66.4 HP), strong low-speed torque output, proven reliability and ultra-long service life, with fuel consumption of only 6-8 L per hour, adaptable to low-grade diesel in various regions and continuous heavy-load operation.

• Ultra-short tail swing design with only 1,490 mm rear swing radius, the upper structure stays within the track width during full rotation, completely eliminating tail collision risks when working against walls, in narrow alleys or beside traffic lanes, greatly improving construction safety and space utilization.

• Hydraulically offset swing boom system, which can swing left and right independently; combined with the ultra-short tail, the machine can dig parallel to walls and perform foundation trenching at the edge of the site without repositioning, significantly improving work efficiency in confined spaces.

• Closed-center load-sensing hydraulic system (CLSS) with precise flow distribution, smooth and coordinated compound actions, excellent micro-operation accuracy for fine grading and precise trenching; standard high-flow auxiliary hydraulic pipeline, compatible with hydraulic hammer, auger, grab, ripper and other attachments for multi-purpose operation.

• Reinforced heavy-duty X-shaped chassis frame with 450 mm wide steel track, strong impact resistance and excellent durability; standard front dozer blade for site leveling, backfilling and slope finishing, improving integrated operation efficiency; two-speed travel mode with maximum speed of 5.0 km/h, gradeability up to 30°.

• Spacious fully enclosed ergonomic cab with wide panoramic vision, adjustable air-suspension shock-absorbing seat and centralized control layout, effectively reducing operator fatigue during long working hours; equipped with safety lock lever and ROPS/FOPS protection structure to ensure construction safety.

• Transparent and reliable used condition: genuine unmodified hour meter reading, no abnormal oil leakage from engine, hydraulic pump and control valve; no cracks, deformation or welding repair traces on boom, stick, chassis frame and revolving platform; undercarriage components maintain good wear condition.

• Full one-stop global export service: support third-party pre-shipment inspection by SGS, BV and other authoritative institutions; professional team handles customs declaration, shipping booking, container loading supervision, and provides complete set of export documents. Lifelong 24/7 online technical support for maintenance and fault troubleshooting.

General Specifications

Application Scenarios

This used Komatsu PC78US excavator is especially suitable for urban construction projects with limited space, including municipal pipeline trenching, cable laying, urban road maintenance and repair, indoor building demolition, courtyard landscaping, basement construction, foundation pit excavation in residential areas, and material handling beside traffic lanes. With its ultra-short tail and offset boom design, it can efficiently complete operations that ordinary excavators cannot perform in narrow sites, and is also the core high-profit equipment for engineering rental fleets targeting municipal projects.

Quality Assurance & After-Sales Service

• Pre-delivery inspection: 100-point full inspection covering engine, hydraulic system, electrical system, traveling mechanism and working device, with complete test video and inspection report provided.

• Warranty policy: 3 months or 500 working hours warranty for core components (engine main parts, hydraulic pump, main control valve) after delivery.

• Spare parts supply: Long-term supply of original and cost-effective alternative spare parts at factory price, supporting international express delivery to all regions.

• Technical support: Lifelong 24/7 online video guidance for equipment installation, debugging, daily maintenance and fault troubleshooting.