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Komatsu HD780

Series: Komatsu Rock Truck

Source: https://www.lectura-specs.com/en/model/construction-machiner

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With the HD780, Komatsu offers a model from the Komatsu Rock Truck series. The engine delivers 811.1 hp (583.1 kW), with a displacement of 28,005.5 cm³. The wheelbase measures 4,751.8 mm. Ground clearance is 780.3 mm. Top speed is 65 km/h. The tank holds 1,000.1 litres. The cooling system holds 230.2 litres. The oil fill is 90.1 litres. The engine fitted is the VTA-1710. Tyre size: 24,00-49-42PR. The Komatsu Rock Truck series covers 35 models. Rated output within it ranges from 233.2 to 3,548.6 hp; the HD780 sits in the lower part of that range with 811.1 hp. Its immediate neighbours are the HD680 below it with 785.7 hp and the HD785-1 above it with 912.5 hp. 1159 Komatsu models across 39 series are on record. The model is listed under Mining equipment. 15 verified figures from 1 source are on file.

Technical data

Engine

Engine modelVTA-1710correct
Power811.1 hp (583.1 kW)correct
Displacement28,005.5 cm³correct
Aspirationturbochargedcorrect
Coolant capacity230.2 lcorrect
Engine oil capacity90.1 lcorrect

Dimensions and weights

Length9,985.2correct
Width5,702.8correct
Wheelbase4,751.8correct
Ground clearance780.3correct

Drivetrain and chassis

Gearbox typeTORQFLOW planetary gearcorrect
Tyre size24.00-49-42PRcorrect
Top speed65 km/hcorrect

Working data

Fuel tank capacity1,000.1 lcorrect

Frequently asked questions

How much power does the Komatsu HD780 have?

The Komatsu HD780 delivers 811 hp.

What engine does the Komatsu HD780 have?

28,006 cm³ displacement.

How fast does the Komatsu HD780 go?

Top speed is 65 km/h.

What are the dimensions of the Komatsu HD780?

9,985 mm × 5,703 mm.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 15 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

730E-7

730E-8

830E

830E-1AC

830E-AC

860E-1K

930E-4

930E-4SE

960E-1

960E-2

960E-2K

980E-4

Sources: [1]

Dump truck in 3D section

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