The John Deere Construction 644 H Wheel Loader (1988-2021) stands out for typical engine power at 205 hp (153 kW), while below-average weight comes in at 38,202 lb (17.3 t). The listed maximum bucket capacity is 4.32 yd³ (3.3 m³).
Specification profile
Wheel Loader • 1988-2021
Weight: 38,202 lb (17.3 t)Engine power: 205 hp (153 kW)Maximum bucket capacity: 4.32 yd³ (3.3 m³)Minimum bucket capacity: 3.53 yd³ (2.7 m³)
38,202 lb (17.3 t)Weight
205 hp (153 kW)Engine power
4.32 yd³ (3.3 m³)Maximum bucket capacity
3.53 yd³ (2.7 m³)Minimum bucket capacity
24.2 mph (39 km/h)Travel speed
745 lb-ft (1,010 Nm)Maximum torque
8.86 ft (2.7 m)Transport width
9.51 ft (2.9 m)Bucket width
How it compares
Low, average or high?
Engine power
Average
205 hp (153 kW)
Low 44.3 hp (33 kW)Typical 212 hp (158 kW)High 814 hp (607 kW)
Engine power is close to the typical figure.
Weight
Below average
38,202 lb (17.3 t)
Low 7,419 lb (3.37 t)Typical 43,268 lb (19.6 t)High 210,541 lb (95.5 t)
Weight is below the typical figure.
Maximum bucket capacity
Below average
4.32 yd³ (3.3 m³)
Low 1.05 yd³ (0.8 m³)Typical 5.37 yd³ (4.11 m³)High 17 yd³ (13 m³)
Maximum bucket capacity is below the typical figure.
Minimum bucket capacity
Average
3.53 yd³ (2.7 m³)
Low 0.78 yd³ (0.6 m³)Typical 3.71 yd³ (2.84 m³)High 12.4 yd³ (9.5 m³)
Minimum bucket capacity is close to the typical figure.
Travel speed
Above average
24.2 mph (39 km/h)
Low 12 mph (19.3 km/h)Typical 21.4 mph (34.4 km/h)High 26.7 mph (43 km/h)
Travel speed is above the typical figure.
Maximum torque
Average
745 lb-ft (1,010 Nm)
Low 107 lb-ft (145 Nm)Typical 732 lb-ft (992 Nm)High 2,104 lb-ft (2,852 Nm)
Maximum torque is close to the typical figure.
Visual overview
Key measurements
Capacity
Published capacity figures shown together for quick comparison.
Working dimensions
Useful working and clearance measurements shown side by side.
Overall size
The main published dimensions shown together at a glance.
Equipment
Features & equipment
Published equipment and feature availability for this model.
Air conditioningNO
Diesel particulate filterNO
Hydraulic quick hitchNO
Mechanical quick hitchNO
Swing loaderNO
TelescopicNO
Overview
Model information
| Manufacturer | John Deere Construction |
|---|---|
| Model | 644 H |
| Category | Wheel Loader |
| Model year / production | 1988-2021 |
Full specifications
Technical details
Performance
Engine power205 hp (153 kW)
Maximum torque745 lb-ft (1,010 Nm)
Travel speed24.2 mph (39 km/h)
Dimensions
Bucket width9.51 ft (2.9 m)
Transport height11.2 ft (3.4 m)
Transport length28 ft (8.52 m)
Transport width8.86 ft (2.7 m)
Outside turning radius18 ft (5.5 m)
Capacity & weight
Maximum bucket capacity4.32 yd³ (3.3 m³)
Minimum bucket capacity3.53 yd³ (2.7 m³)
Weight38,202 lb (17.3 t)
Swing loaderNo
Engine & drivetrain
Displacement2.14 US gal (8.1 L)
Engine manufacturerJohn Deere
Engine type6081H
Number of cylinders6.0
Setup & fitment
Hydraulic quick hitchNo
Mechanical quick hitchNo
Standard tyres17.5R25EM
Features
Air conditioningNo
Diesel particulate filterNo
TelescopicNo
Other specifications
Model seriesH
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