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John Deere 640G

Series: John Deere Skidder

Source: https://www.mascus.com/forestry/forestry-other/john-deere-64

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The John Deere Skidder series from John Deere includes the 640G. The engine delivers 159.2 hp (112.6 kW), has 6 cylinders, with a displacement of 6,784.2 cm³. Rated speed is 2,200 rpm. The unladen weight is 10,840.9 kg. The wheelbase measures 3,432 mm. Ground clearance is 515.1 mm. The tank holds 159 litres. The gearbox has 8 forward gears. There are also 4 reverse gears. Maximum torque is reached at 1,350 rpm. The hydraulic tank holds 41.6 litres. Working pressure is 206.8 bar. The cooling system holds 28.8 litres. The oil fill is 18.9 litres. The engine fitted is the 6068T. Tyre size: 28L-26. The John Deere Skidder series covers 25 models. Rated output within it ranges from 122.7 to 202.8 hp; the 640G sits in the middle of that range with 159.2 hp. Its immediate neighbours are the 648E below it with 150.1 hp and the 640G Series II above it with 162.2 hp. 2153 John Deere models across 96 series are on record. The model is listed under Forestry equipment. 22 verified figures from 1 source are on file.

Technical data

Engine

Engine model6068Tcorrect
Power159.2 hp (112.6 kW)correct
Rated speed2,200 rpmcorrect
Speed at max. torque1,350 rpmcorrect
Cylinders6correct
Displacement6,784.2 cm³correct
Aspirationturbochargedcorrect
Coolant capacity28.8 lcorrect
Engine oil capacity18.9 lcorrect

Dimensions and weights

Length7,232.9correct
Width3,002.3correct
Wheelbase3,432correct
Ground clearance515.1correct
Unladen weight10,840.9 kgcorrect

Drivetrain and chassis

Gearbox typeplanetarycorrect
Forward gears8correct
Reverse gears4correct
Tyre size28L-26correct

Working data

Hydraulic oil capacity41.6 lcorrect
Hydraulic pressure206.8correct
Fuel tank capacity159 lcorrect

Where this model stands

Power-to-weight ratio: 10.4 kW/t (113 kW / 10.8 t)

Stronger than 23% of the forestry equipment in the register — out of 111 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the John Deere 640G have?

The John Deere 640G delivers 159 hp.

How much does the John Deere 640G weigh?

The unladen weight is 10,841 kg.

What engine does the John Deere 640G have?

6 cylinders, 6,784 cm³ displacement.

What are the dimensions of the John Deere 640G?

7,233 mm × 3,002 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.
  • Check the weights in the papers against the figures here — attachments change them.
  • 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 22 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

540E

540G

540G Series II

540G Series III

548E

548G

548G Series II

548G Series III

640G Series II

640G Series III

640H

648E

Sources: [1]

Forwarder in 3D section

Turn the model, look inside and click an assembly — each one is explained.

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