Komatsu PC78US Used Excavator Overview

The Komatsu PC78US is a compact short tail swing midi hydraulic excavator built for tight-space construction, municipal renovation, landscaping and pipeline trenching jobs. Well-known for its short tail swing design, original Komatsu engine and mature CLSS closed load-sensing hydraulic system, the PC78US remains a highly popular used excavator among global contractors.

Key Features:

Proven Komatsu Power Unit The excavator is equipped with the Komatsu SAA4D95LE-5 four-cylinder water-cooled turbo diesel engine, delivering 41 kW (55 HP) net power at 1950 rpm. This durable factory engine runs smoothly under frequent start-stop operations, offers stable torque output and good fuel economy, suitable for long-hour light and medium-duty construction work.

Stable Heavy-Duty Build With an operating weight of approximately 7,200 kg, the PC78US adopts short tail swing structure. The rear counterweight only slightly extends beyond track width during rotation, which enables safe operation beside walls and buildings. Reinforced frame, heavy-duty track undercarriage and standard dozer blade provide solid stability during digging and backfilling.

Versatile Digging & Loading Performance Bucket capacity ranges from 0.09 to 0.34 m³ and maximum digging depth reaches 4,200 mm. The machine efficiently completes pipeline trenching, soil removal, backfilling and site reshaping. Auxiliary hydraulic lines support quick installation of hydraulic breakers for multiple construction tasks.

Efficient Hydraulic System Komatsu’s CLSS closed load-sensing hydraulic system delivers smooth and precise joystick control. Pressure compensation technology enables coordinated multi-function movements and responsive operation, improving productivity for repeated digging and slewing operations in confined worksites.

Serviceable & Operator-Centric Design Ground-level service access simplifies daily inspection and component maintenance to reduce downtime. The enclosed operator cab provides clear all-around visibility and ergonomic controls, lowering operator fatigue during long working shifts.

Applications:

The Komatsu PC78US Used Excavator is ideal for a range of applications, including:

• Urban & Municipal Works: Narrow trench digging, cable laying and roadside renovation.
• Residential & Backyard Projects: Small foundation works, garden earthworks and site clearing.
• Landscaping & Farm Projects: Pond digging, slope shaping and farmland improvement.
• Confined-space Light Demolition: Debris removal and small demolition jobs in tight areas.

Conclusion:

The Komatsu PC78US Used Excavator stands out for its short tail swing design, compact footprint and dependable original Komatsu powertrain. It is an agile workhorse for light and medium earthmoving tasks in limited-space sites. Widely traded in the global used machinery market, the PC78US features easy repair and stable performance, making it a preferred midi excavator for landscaping, municipal and residential contractors.