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John Deere 644D vs John Deere 855

Verdict: John Deere 644D vs John Deere 855

The John Deere 644D and the John Deere 855 are both industrial tractors — here is how they stack up on the figures that matter. John Deere 855 leads on rated power with 220 hp against 165 hp. John Deere 644D is the lighter machine (13,299 kg vs 22,498 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 644D is the newer design (1985 vs 1978). In short: choose the John Deere 855 for outright pulling power, or the John Deere 644D if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
John Deere 644D Industrial Tractor
John Deere
94
Fit score
Best match
Clear
John Deere 855 Industrial Tractor
John Deere
94
Fit score
Best match
Clear
Rated power
165 hp
220 hp
Confidence
98%
98%
Guide price
Overview
Manufacturer
John DeereReference
John DeereReference
liquid-cooledReference
liquid-cooledReference
Final drives
inboard planetaryReference
Drive
crawlerReference
Engine
Fuel tank
253.6 LReference
Engine (gross)
123.0 kWReference
164.1 kWReference
Engine (net)
115.6 kWReference
149.1 kWReference
Displacement
7.6 LReference
10.1 LReference
Bore/Stroke
116 x 121 mmReference
130 x 127 mmReference
Power (net)
115.6 kWReference
149.1 kWReference
Power (gross)
123.0 kWReference
164.1 kWReference
Air cleaner
dryReference
dryReference
Rated RPM
2200Reference
1800Reference
Torque
650.9 NmReference
989.9 NmReference
Torque RPM
1400Reference
1300Reference
Starter
electricReference
electricReference
Starter volts
12Reference
24Reference
Oil capacity
18.9 LReference
32.2 LReference
Coolant capacity
27.4 LReference
39.7 LReference
Transmission
Gears
4 forward and 2 reverseReference
infinite forward and reverseReference
PTO & Hydraulics
Type
power shiftReference
hydrostaticReference
Pressure
181.0 barReference
179.3 barReference
Pump flow
238.5 lpmReference
264.9 lpmReference
Hydraulic system
151.4 LReference
Capacity
151.4 LReference
Dimensions
Wheelbase
292 cmReference
Weight
13299 kgReference
22498 kgReference
Front tire
20.5-25Reference
Rear tire
20.5-25Reference
Industrial front
23.5-25Reference
Industrial rear
23.5-25Reference
Length
702 cmReference
599 cmReference
Height (ROPS)
320 cmReference
330 cmReference
Height (exhaust)
312 cmReference
Operating weight
13299 kgReference
22498 kgReference
Front tread
203 cmReference
Rear tread
203 cmReference
Gauge
193 cmReference
John Deere 644D attachments
Electrical
Charging system
alternatorReference
alternatorReference
ROPS Charging amps
42Reference
Cab Charging amps
90Reference
Batteries
2Reference
2Reference
Battery CCA
625Reference
570Reference
Battery volts
12Reference
12Reference
Capacities
Fuel
401.2 LReference
John Deere 855 attachments
John Deere 855 Tracks
Width
45 cmReference
Length on ground
281 cmReference
Area on ground
2.6 m²Reference
Ground pressure
0.9 barReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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