Among the key figures for the John Deere Construction 644 C Wheel Loader (1981-1985) are below-average engine power at 168 hp (125 kW) and low weight at 29,535 lb (13.4 t). Another useful figure is maximum bucket capacity at 4.45 yd³ (3.4 m³).
Specification profile
Wheel Loader • 1981-1985
Weight: 29,535 lb (13.4 t)Engine power: 168 hp (125 kW)Maximum bucket capacity: 4.45 yd³ (3.4 m³)Minimum bucket capacity: 2.49 yd³ (1.9 m³)
29,535 lb (13.4 t)Weight
168 hp (125 kW)Engine power
4.45 yd³ (3.4 m³)Maximum bucket capacity
2.49 yd³ (1.9 m³)Minimum bucket capacity
27.1 mph (43.6 km/h)Travel speed
472 lb-ft (640 Nm)Maximum torque
8.37 ft (2.55 m)Transport width
8.53 ft (2.6 m)Bucket width
How it compares
Low, average or high?
Engine power
Below average
168 hp (125 kW)
Low 44.3 hp (33 kW)Typical 212 hp (158 kW)High 814 hp (607 kW)
Engine power is below the typical figure.
Weight
Low
29,535 lb (13.4 t)
Low 7,419 lb (3.37 t)Typical 43,268 lb (19.6 t)High 210,541 lb (95.5 t)
Weight is well 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
Low
2.49 yd³ (1.9 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 well below the typical figure.
Travel speed
High
27.1 mph (43.6 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 well above the typical figure.
Maximum torque
Low
472 lb-ft (640 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 below 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 C |
| Category | Wheel Loader |
| Model year / production | 1981-1985 |
Full specifications
Technical details
Performance
Engine power168 hp (125 kW)
Maximum torque472 lb-ft (640 Nm)
Travel speed27.1 mph (43.6 km/h)
Dimensions
Bucket width8.53 ft (2.6 m)
Transport height10.5 ft (3.2 m)
Transport length22.6 ft (6.88 m)
Transport width8.37 ft (2.55 m)
Outside turning radius38.1 ft (11.6 m)
Capacity & weight
Maximum bucket capacity4.45 yd³ (3.4 m³)
Minimum bucket capacity2.49 yd³ (1.9 m³)
Weight29,535 lb (13.4 t)
Swing loaderNo
Engine & drivetrain
Cylinder bore × stroke116×121 mm
Displacement2.02 US gal (7.64 L)
Engine manufacturerJohn Deere
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 seriesC
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