- Dump Clearance At Max Raise: 9.75 ft / 2970 mm
- Bucket Capacity - Heaped: 3 yd3 / 2.3 m3
- Bucket Capacity - Struck: 2.52 yd3 / 1.93 m3
- Bucket Width: 8.73 ft / 2660 mm
Published dimensions and weight
John Deere 644D
The John Deere 644D pairs the 6-466T engine (155 hp) with an operating weight near 13.3 t.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Operating Weight29320 lb13300 kg
03Selected published values47
Wheel loaders are commonly used to load, carry and stockpile loose material on prepared surfaces. Published rows for John Deere 644D include published bucket capacity of 3 yd3 / 2.3 m3, published breakout force of 24430 lb / 109 kN, published operating weight of 29320 lb / 13300 kg. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Dump Clearance At Max Raise” field (9.75 ft / 2970 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Bucket Capacity - Heaped” field (3 yd3 / 2.3 m3) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Bucket Capacity - Struck” field (2.52 yd3 / 1.93 m3) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Bucket
Dump Clearance At Max Raise9.75 ft2970 mm
Bucket Capacity - Heaped3 yd32.3 m3
Bucket Capacity - Struck2.52 yd31.93 m3
Bucket Width8.73 ft2660 mm
Breakout Force24430 lb109 kN
Dimensions
Ground Clearance1.69 ft514 mm
Length With Bucket On Ground23.08 ft7034.79 mm
Width Over Tires8.55 ft2605 mm
Height To Top Of Cab10.5 ft3200.4 mm
Wheelbase9.59 ft2920 mm
Hinge Pin - Max Height12.67 ft3861.82 mm
Reach At Max Lift And Dump3.07 ft933 mm
Engine
Number Of Cylinders66
Engine Make22402240
Engine Model6-466T6-466T
Net Power155 hp115.6 kw
Gross Power165 hp123.1 kw
Power Measured @2200 rpm2200 rpm
Max Torque480 lb ft650.8 Nm
Displacement466 cu in7.7 L
Torque Measured @1400 rpm1400 rpm
AspirationTurbochargedTurbocharged
Operational
Operating Weight29320 lb13300 kg
Fuel Capacity67 gal254 L
Hydraulic System Fluid Capacity25.1 gal95 L
Engine Oil Fluid Capacity5.1 gal19 L
Cooling System Fluid Capacity7.4 gal28 L
Transmission Fluid Capacity9.8 gal37 L
Front Axle/Diff Fluid Capacity6.1 gal23 L
Rear Axle/Diff Fluid Capacity6.1 gal23 L
Static Tipping Weight25210 lb11435.1 kg
Turning Radius16.5 ft5029.2 mm
Operating Voltage12 V12 V
Alternator Supplied Amperage42 amps42 amps
Rear Axle Oscillation22 degrees22 degrees
Tire Size20.5-2520.5-25
Transmission
Transmission TypePower shift planetaryPower shift planetary
Number Of Forward Gears44
Number Of Reverse Gears22
Max Speed - Forward27.3 mph43.9 km/h
Max Speed - Reverse8.2 mph13.2 km/h
Hydraulic System
Relief Valve Setting2625 psi18099 kPa
Pump Flow Capacity63 gal/min238.5 L/min
Raise Time6.1 sec6.1 sec
Dump Time2 sec2 sec
Lower Time4.3 sec4.3 sec
Pump TypeGear type pumpGear type pump
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Manufacturer-published specifications.