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John Deere

644D

Wheel Loader

Operating Weight
29,320 lb
Bucket Capacity - heaped
3.00 yd³
Gross Power
165.0 hp
Net Power
155.0 hp
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John Deere 644D Wheel Loader
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Specifications

45 data points

Operating Specifications

Operating Specifications specifications
Operating Weight29,320 lb
Fuel Capacity67.0 gal
Tire Size20.5-25
Hydraulic System Fluid Capacity25.1 gal
Static Tipping Weight25,210 lb
Operating Voltage12 V
Turning Radius198 in
Engine Oil Fluid Capacity5.1 gal
Rear Axle Oscillation22 °
Alternator Supplied Amperage42 A
Front Axle/Diff Fluid Capacity6.1 gal
Rear Axle/Diff Fluid Capacity6.1 gal
Cooling System Fluid Capacity7.4 gal
Transmission Fluid Capacity9.8 gal

Engine

Engine specifications
Engine Model6-466T
Displacement466 in³
Power Measured @2,200 rpm
Gross Power165.0 hp
Net Power155.0 hp
Number of Cylinders6
AspirationTurbocharged
Torque Measured @1,400 rpm

Hydraulic System

Hydraulic System specifications
Pump Flow Capacity63.0 gal/min
Raise Time6.1 s
Lower Time4.3 s
Dump Time2.0 s
Relief Valve Setting2,625 psi
Pump TypeGear type pump

Dimensions

Dimensions specifications
Ground Clearance20 in
Height - Top of Cab126 in
Wheelbase115 in
Width Over Tires103 in
Reach at Max Lift and Dump37 in
Length with Bucket on Ground277 in
Hinge Pin - Max Height152 in

Transmission

Transmission specifications
Max Speed - Forward27.3 mph
Max Speed - Reverse8.2 mph
Transmission TypePower shift planetary
Number of Forward Gears4
Number of Reverse Gears2

Bucket

Bucket specifications
Bucket Capacity - heaped3.00 yd³
Bucket Capacity - struck2.60 yd³
Dump Clearance at Max Raise118 in
Breakout Force24,430 lb
Bucket Width106 in

Comparable machines

Other wheel loaders in a similar weight class.