Overview
The John Deere Construction & Forestry John Deere 644K is a wheel loader listed in the Heavy Equipment Hub equipment database with structured specifications for comparison, research, and machine selection. Key specification points include operating weight of 41,187 lb, capacity of 4.2 yd³ and fuel capacity of 104.9 gal. This model can be reviewed for loading, stockpile work, material handling, yard operations, and fleet comparison workflows. Use the full specifications table to compare the John Deere Construction & Forestry John Deere 644K against similar wheel loader models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Operating Weight
41,186.80
lb
Full Specifications
28 specs
Dimensions
Bucket Capacity - Smallest
4.06 yd³ / 3.10 m³
Ground Clearance
18.15 ft / 5.53 m
Height Over Cab
11.26 ft / 3.43 m
Hinge Pin - Max Height
13.52 ft / 4.12 m
Largest Bucket Capacity
4.19 yd³ / 3.20 m³
Length With Bucket On Ground
27.24 ft / 8.30 m
Reach At Max Lift And Dump
5.29 ft / 1.61 m
System Voltage
24 V
Turning Circle
43.57
Wheelbase
10.70 ft / 3.26 m
Width Over Tires
9.44 ft / 2.88 m
Engine
Alternator
130 A
Displacement
549 cu in / 9.0 L
Emission Level
Tier 4
Engine Model
PowerTech PSS 6090
Engine Output-Net
232 hp / 173.0 kW
Front Axle/Diff Fluid Capacity
5.90 gal / 22.3 L
Fuel Capacity
104.90 gal / 397.1 L
Heaped Capacity
4.20 yd³ / 3.21 m³
Hydraulic Tank
27.80 gal / 105.2 L
Operating Weight
41,187 lb / 18,682 kg
Pump Flow
78.50 gal/min / 297.2 L/min
Rated Speed
1,700 rpm
Rear Axle/Diff Fluid Capacity
5.90 gal / 22.3 L
Torque
783 lb-ft / 1,062 Nm
Torque Rise
56 lb-ft / 76 Nm
Transmission
6.1
Hydraulics
System Pressure
252 psi / 17.4 bar
Related Machines
Related Guides & Articles
Mar 14, 2026
Wheel Loader vs Skid Steer: Which Machine Fits Your Job Best?
Read article →
Mar 17, 2026
Inside the Power of Two Giant Cat 990 Wheel Loaders – Massive Coal Loading Operation
Read article →
Mar 17, 2026
Ultimate Guide to Mega Machines: Excavators, Haulers, Wheel Loaders & Bulldozers in 4K
Read article →
Frequently Asked Questions
What is the operating weight of the John Deere Construction & Forestry John Deere 644K? +
The John Deere Construction & Forestry John Deere 644K has an operating weight of 41,187 lb (18,682 kg). This places it in a class suited for wheel loader applications where ground pressure and transport weight are key considerations.
How does the John Deere Construction & Forestry John Deere 644K compare to similar Wheel Loader models? +
You can compare the John Deere Construction & Forestry John Deere 644K side by side with any other model using the Heavy Equipment Hub compare tool. Key comparison points include engine power, operating weight, digging depth, hydraulic flow, and overall dimensions.