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John Deere 644B

Series: John Deere Wheel Loader

Source: https://www.kleinanzeigen.de/s-anzeige/radlader-15to-john-de

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The John Deere Wheel Loader series from John Deere includes the 644B. The engine delivers 162.2 hp (108.1 kW), has 6 cylinders, with a displacement of 8,701.5 cm³. Torque is 585.7 Nm. Rated speed is 2,200 rpm. The unladen weight is 12,745.9 kg. The wheelbase measures 2,642.6 mm. Ground clearance is 506 mm. The tank holds 212 litres. The gearbox has 4 forward gears. There are also 2 reverse gears. Maximum torque is reached at 1,500 rpm. The pump delivers 220.3 l/min. The hydraulic tank holds 66.2 litres. The cooling system holds 46.6 litres. The electrical system runs on 12 V. Tyre size: 14,5-25 / 20,5-25. The John Deere Wheel Loader series covers 120 models. Rated output within it ranges from 55.8 to 286.9 hp; the 644B sits in the middle of that range with 162.2 hp. Its immediate neighbours are the 624EH below it with 158.2 hp and the 624GH above it with 163.2 hp. 2153 John Deere models across 96 series are on record. The model is listed under Wheel loaders. 21 verified figures from 1 source are on file.

Technical data

Engine

Power162.2 hp (108.1 kW)correct
Rated speed2,200 rpmcorrect
Torque585.7correct
Speed at max. torque1,500 rpmcorrect
Cylinders6correct
Displacement8,701.5 cm³correct
Aspirationturbochargedcorrect
Coolant capacity46.6 lcorrect

Dimensions and weights

Wheelbase2,642.6correct
Ground clearance506correct
Unladen weight12,745.9 kgcorrect

Drivetrain and chassis

Gearbox typePower shift Planetarycorrect
Forward gears4correct
Reverse gears2correct
Tyre size14.5-25 / 20.5-25correct
System voltage12 Vcorrect

Working data

Pump flow220.3 l/mincorrect
Hydraulic oil capacity66.2 lcorrect
Fuel tank capacity212 lcorrect

Other data

Height3,240correct

Where this model stands

Power-to-weight ratio: 8.5 kW/t (108 kW / 12.7 t)

Stronger than 55% of the wheel loaders in the register — out of 1,253 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 644B have?

The John Deere 644B delivers 162 hp.

How much does the John Deere 644B weigh?

The unladen weight is 12,746 kg.

What engine does the John Deere 644B have?

6 cylinders, 8,702 cm³ displacement.

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.
  • 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 21 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

204L

210LE

244E

244H

244J

244K-II

304H Waste Handler

304J

304L

324H

324J

324K

Sources: [1]

Wheel loader in 3D section

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

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