John Deere Construction & Forestry · Wheel Loader

John Deere 644A Specs

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Overview

The John Deere Construction & Forestry John Deere 644A 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 engine power of 131 hp, operating weight of 2,520 lb, fuel capacity of 50.0 gal and hydraulic capacity of 17.5 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 644A against similar wheel loader models by power, weight, capacity, dimensions, speed, and other technical values.

Key Specifications

Operating Weight
2,520
lb

Net Power
131
hp

Gross Power
141
hp

Bucket Capacity - Heaped
2.50
yd3

Full Specifications

38 specs

Dimensions

Breakout Force 41,515 lb / 18,831 kg

Bucket Capacity - Heaped 2.50 yd³ / 1.91 m³

Bucket Capacity - Struck 2.05 yd³ / 1.57 m³

Bucket Width 8.70 ft / 2.65 m

Dump Clearance At Max Raise 9.25 ft / 2.82 m

Ground Clearance 1.44 ft / 0.44 m

Height to Top of Cab 10.17 ft / 3.10 m

Hinge Pin - Max Height 11.85 ft / 3.61 m

Length With Bucket On Ground 20.67 ft / 6.30 m

Reach At Max Lift And Dump 2.92 ft / 0.89 m

Wheelbase 8.67 ft / 2.64 m

Engine

Alternator Supplied Amperage 55 A

Cooling System Fluid Capacity 9 gal / 34.1 L

Displacement 404 cu in / 6.6 L

Engine Make 2240

Engine Oil Fluid Capacity 4.30 gal / 16.3 L

Front Axle/Diff Fluid Capacity 6 gal / 22.7 L

Fuel Capacity 50 gal / 189.3 L

Gross Power 141 hp / 105.1 kW

Hydraulic System Fluid Capacity 17.50 gal / 66.2 L

Max Speed - Forward 23 mph / 37.0 km/h

Max Speed - Reverse 9.50 mph / 15.3 km/h

Max Torque 345 lb-ft / 468 Nm

Net Power 131 hp / 97.7 kW

Number of Forward Gears 4

Number of Reverse Gears 2

Operating Voltage 12 V

Operating Weight 2,520 lb / 1,143 kg

Power Measured @ 2,400 rpm

Rear Axle Oscillation 22 lb / 10 kg

Rear Axle/Diff Fluid Capacity 6.50 gal / 24.6 L

Static Tipping Weight 18,604 lb / 8,439 kg

Tire Size 16 in / 406 mm

Torque Measured @ 1,600 rpm

Transmission Fluid Capacity 9.80 gal / 37.1 L

Turning Radius 15.50 ft / 4.72 m

Hydraulics

Pump Flow Capacity 60 gal/min / 227.1 L/min

Relief Valve Setting 2,250 psi / 155.1 bar

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Frequently Asked Questions

What is the operating weight of the John Deere Construction & Forestry John Deere 644A? +

The John Deere Construction & Forestry John Deere 644A has an operating weight of 2,520 lb (1,143 kg). This places it in a class suited for wheel loader applications where ground pressure and transport weight are key considerations.

How powerful is the John Deere Construction & Forestry John Deere 644A engine? +

The John Deere Construction & Forestry John Deere 644A produces 141 hp (105.1 kW) of engine power. This output is typical for its weight class and designed to handle demanding Wheel Loader work cycles efficiently.

How does the John Deere Construction & Forestry John Deere 644A compare to similar Wheel Loader models? +

You can compare the John Deere Construction & Forestry John Deere 644A 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.