The Komatsu PC78 is a mid-sized hydraulic excavator known for its reliability, efficiency, and versatility in construction, landscaping, and utility work. Below are the key details:

Komatsu PC78 Specifications

General

• Operating Weight: ~7,800–8,200 kg (varies by configuration)

• Class: 8-ton mini excavator

• Engine: Komatsu SAA4D95LE-6 (Tier 4 Final/Stage V compliant)

  • Power: ~55–60 HP (41–45 kW)

  • Displacement: ~3.26 liters

• Bucket Capacity: ~0.28–0.38 m³ (standard bucket)

• Max Digging Depth: ~4.0–4.5 m

• Max Reach: ~6.5–7.0 m

• Fuel Tank Capacity: ~110 liters

Hydraulics & Performance

• Hydraulic System: Load-sensing, high-efficiency pumps

• Travel Speed: ~4.5–5.0 km/h

• Swing Speed: ~10–12 rpm

Key Features

✔ Komatsu Hydraulic System (KHSS) – Smooth and precise control for better efficiency.
✔ ECO Mode – Reduces fuel consumption without losing performance.
✔ Ergonomic Cab – Low noise, air suspension seat, and intuitive controls.
✔ Durable Undercarriage – Long-lasting tracks and reinforced components.
✔ Easy Maintenance – Centralized grease points and easy-access filters.

Applications

• Urban construction (tight spaces due to compact size)

• Trenching & utility work

• Landscaping & grading

• Material handling (with thumb or grapple attachments)

Comparison to Competitors

Variants

• PC78US-11 (Zero Tail Swing for confined spaces)

• PC78MR-11 (Reduced Swing Radius)

We would like to personally thank you for allowing Jiangchun Trading Co., Ltd. to present our introduction, Shanghai Sunight Machinery Co., Ltd. is one of the bigger supplier and buyer of used machine in Shanghai,China.

We have a range of used construction equipment available. Everything from excavators, bulldozers, motor graders, Soil Compactors, wheel loaders and dumper trucks.

We are also have great demand on used Excavator, bulldozer, loader, grader from all over the world.

The excavator is one of the most versatile pieces of construction equipment. The different uses for the excavator include: digging, demolition, dredging, lifting and moving. Each year hundreds of used excavators are shipped to all regions of the world, especially Africa, South East Asia and the Middle East.

As for excavator, the most popular model range from Cat E70B,E120B,E200B, 320B, 320C, 320D, 336D, Komatsu PC35MR, 55MR, 60-7,78US, 120-6, 128US, PC200-6, PC220-6, PC220-7, PC300-7; Hitachi EX60, EX100, EX120, EX200, EX200-3, ZX200-6. Kobelco SK03, SK07, SK200-6, SK200-8;

As for the bulldozer, the popular model includes Cat D5C,D5G, D5K, D6D, D6G, D7G,D7H,D8K; Komatsu D65, D85-18, D155; Shantui SD13, SD16, SD22, SD32

As for the roller, the popular model includes Dynapac CA25D, 30D; Bomag BW202AD-2, BW219D-2, BW217D-2, Ingersoll rand SD100D, SD175D.

As for the grader, the popular model includes Cat 12G, 140G, 140H, 140K; Komatsu GD511A, GD611A-1

We also purchase and sell the wheel loader as below model, Cat 950C,966D, 966G, 966H; Komatsu WA320-1, 320-5, 380-3, 470-3.