Komatsu PC850 Long boom excavators tech specs

Overview

The Komatsu PC850-8R1 long boom (2020–2026) is an 85-ton excavator aimed at marine contractors, dredging companies, infrastructure fleets, and earthmoving businesses that need to work beyond the range of a conventional excavator. Its 16 m boom, 20 m maximum digging depth, and 26 m maximum digging reach suit deep foundations, canal work, riverbank maintenance, sediment removal, and excavation from stable ground.

Expert rating: 5 stars

Pros Exceptional 26 m digging reach and 20 m depth, with high hydraulic flow for demanding long-boom operation.

Cons Expensive and difficult to transport, with a smaller bucket and slower cycles than a standard-boom PC850.

Performance & Efficiency

The Komatsu SAA6D140E-5 engine produces 370 kilowatt, while the hydraulic system supplies up to 988 liters per minute at a relief pressure of 314 bar. This output supports the large cylinders and additional hydraulic demand created by the 16 m boom. Bucket digging force reaches 363 kN and arm crowding force is 230 kN, providing useful cutting force despite the extended attachment. The 6.8 rpm swing speed supports controlled movement, while the 4.2 kph maximum travel speed and 550 kN drawbar pull help reposition the machine across prepared ground.

Final Verdict

Rated 5 stars, the Komatsu PC850-8R1 long boom is a highly specialized excavator within the AED 820,000–1,300,000 range. Its 20 m digging depth, 26 m reach, powerful hydraulic system, and 85-ton operating weight make it a strong choice for major dredging, marine, slope, and deep-infrastructure work.