In specification terms, the John Deere Construction 644 H mh Wheel Loader (1998-2021) shows above-average engine power at 263 hp (196 kW) alongside below-average weight at 39,661 lb (18 t). It also has maximum bucket capacity of 4.45 yd³ (3.4 m³).
Specification profile
Wheel Loader • 1998-2021
Weight: 39,661 lb (18 t)Engine power: 263 hp (196 kW)Maximum bucket capacity: 4.45 yd³ (3.4 m³)Minimum bucket capacity: 4.32 yd³ (3.3 m³)
39,661 lb (18 t)Weight
263 hp (196 kW)Engine power
4.45 yd³ (3.4 m³)Maximum bucket capacity
4.32 yd³ (3.3 m³)Minimum bucket capacity
24.5 mph (39.5 km/h)Travel speed
981 lb-ft (1,330 Nm)Maximum torque
9.09 ft (2.77 m)Transport width
9.84 ft (3 m)Bucket width
How it compares
Low, average or high?
Engine power
Above average
263 hp (196 kW)
Low 44.3 hp (33 kW)Typical 212 hp (158 kW)High 814 hp (607 kW)
Engine power is above the typical figure.
Weight
Below average
39,661 lb (18 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
4.45 yd³ (3.4 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
Above average
4.32 yd³ (3.3 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 above the typical figure.
Travel speed
Above average
24.5 mph (39.5 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
High
981 lb-ft (1,330 Nm)
Low 107 lb-ft (145 Nm)Typical 732 lb-ft (992 Nm)High 2,104 lb-ft (2,852 Nm)
Maximum torque is well above 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 mh |
| Category | Wheel Loader |
| Model year / production | 1998-2021 |
Full specifications
Technical details
Performance
Engine power263 hp (196 kW)
Maximum torque981 lb-ft (1,330 Nm)
Travel speed24.5 mph (39.5 km/h)
Dimensions
Bucket width9.84 ft (3 m)
Transport height11.5 ft (3.52 m)
Transport length25.6 ft (7.81 m)
Transport width9.09 ft (2.77 m)
Outside turning radius20.1 ft (6.14 m)
Capacity & weight
Maximum bucket capacity4.45 yd³ (3.4 m³)
Minimum bucket capacity4.32 yd³ (3.3 m³)
Weight39,661 lb (18 t)
Swing loaderNo
Engine & drivetrain
Displacement3.3 US gal (12.5 L)
Engine manufacturerJohn Deere
Engine type6125A
Number of cylinders6.0
Setup & fitment
Hydraulic quick hitchNo
Mechanical quick hitchNo
Standard tyres20.5 R 25
Features
Air conditioningNo
Diesel particulate filterNo
TelescopicNo
Other specifications
Model seriesH
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