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John Deere

644H High Lift

Wheel Loader

Operating Weight
39,000 lb
Bucket Capacity - heaped
4.30 yd³
Gross Power
205.0 hp
Net Power
180.0 hp
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John Deere 644H High Lift Wheel Loader
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Specifications

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Operating Specifications

Operating Specifications specifications
Operating Weight39,000 lb
Fuel Capacity90.0 gal
Tire Size20.5-25
Hydraulic System Fluid Capacity31.0 gal
Static Tipping Weight24,798 lb
Operating Voltage24 V
Turning Radius216 in
Engine Oil Fluid Capacity6.7 gal
Rear Axle Oscillation26 °
Alternator Supplied Amperage55 A
Front Axle/Diff Fluid Capacity7.2 gal
Rear Axle/Diff Fluid Capacity7.2 gal
Cooling System Fluid Capacity7.7 gal
Transmission Fluid Capacity6.9 gal

Engine

Engine specifications
Engine Model6081H
Displacement496 in³
Power Measured @2,200 rpm
Gross Power205.0 hp
Net Power180.0 hp
Number of Cylinders6
AspirationTurbocharged with Aftercooler
Torque Measured @1,300 rpm

Hydraulic System

Hydraulic System specifications
Pump Flow Capacity68.0 gal/min
Raise Time6.2 s
Lower Time3.0 s
Dump Time1.4 s
Relief Valve Setting3,600 psi
Pump TypePiston Pump

Dimensions

Dimensions specifications
Ground Clearance19 in
Height - Top of Cab134 in
Wheelbase126 in
Width Over Tires107 in
Reach at Max Lift and Dump47 in
Length with Bucket on Ground336 in
Hinge Pin - Max Height180 in

Transmission

Transmission specifications
Max Speed - Forward24.0 mph
Max Speed - Reverse16.4 mph
Transmission TypePower Shift
Number of Forward Gears4
Number of Reverse Gears3

Bucket

Bucket specifications
Bucket Capacity - heaped4.30 yd³
Bucket Capacity - struck3.70 yd³
Dump Clearance at Max Raise133 in
Breakout Force30,574 lb
Bucket Width115 in

Comparable machines

Other wheel loaders in a similar weight class.