- Length W/ Bucket On Ground: 27.12 ft / 8266 mm
- Width Over Tires: 9.43 ft / 2874 mm
- Height To Top Of Cab: 11.17 ft / 3404 mm
- Wheelbase: 10.5 ft / 3200 m
Published dimensions and weight
John Deere 644H
The John Deere 644H is an integrated tool carrier of about 17.6 t, powered by a 221 hp engine.
01Published dimensions and weight
Dimensions reference
Representative category illustration; exact model may differ.Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Operating Weight38876 lb17631 kg
03Selected published values45
Integrated tool carriers are commonly used for loading and material handling with interchangeable front attachments. Published rows for John Deere 644H include published bucket capacity of 4.3 yd3 / 3.3 m3, published breakout force of 28976 lb / 128.9 kN, published operating weight of 38876 lb / 17631 kg. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Length W/ Bucket On Ground” field (27.12 ft / 8266 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Width Over Tires” field (9.43 ft / 2874 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Height To Top Of Cab” field (11.17 ft / 3404 mm) 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.
Dimensions
Length W/ Bucket On Ground27.12 ft8266 mm
Width Over Tires9.43 ft2874 mm
Height To Top Of Cab11.17 ft3404 mm
Wheelbase10.5 ft3200 m
Ground Clearance1.52 ft461 mm
Hinge Pin Max Height13.6 ft4144 mm
Dump Clearance At Max Lift8.91 ft2713 mm
Max Lift Height12.9 ft3929 mm
Fork Tine Length5.01 ft1525 mm
Reach At Max Height And Dump3.71 ft1128 mm
Length With Out Forks On Ground28.35 ft8641 mm
Engine
Number Of Cylinders66
Engine Make22402240
Engine Model6081H6081H
Gross Power180 hp134 kw
Net Power221 hp165 kw
Power Measured @2200 rpm2200 rpm
Max Torque755 lb ft1020 Nm
Torque Measured @1300 rpm1300 rpm
Torque Rise75 %75 %
Displacement496 cu in8.1 L
AspirationTurbochargedTurbocharged
Operational
Operating Weight38876 lb17631 kg
Fuel Capacity100 gal379 L
Turning Radius18.1 ft5500 mm
Operating Voltage24 V24 V
Alternator Supplied Amperage55 amps55 amps
Rear Axle Oscillation26 degrees26 degrees
Static Tipping Load - Bucket31210.1 lb14156.7 kg
Static Tipping Load - Forks22782 lb10334 kg
Tire Size23.5-2523.5-25
Transmission
Transmission TypePower ShiftPower Shift
Number Of Forward Gears44
Number Of Reverse Gears33
Max Speed Forward22 mph35.4 km/h
Max Speed Reverse15.5 mph24.9 km/h
Hydraulic System
Pump TypePiston PumpPiston Pump
Relief Valve Setting3600 psi24850 kPa
Pump Flow Capacity68 gal/min257.5 L/min
Raise Time6.2 sec6.2 sec
Dump Time1.4 sec1.4 sec
Lower Time3 sec3 sec
Bucket
Breakout Force28976 lb128.9 kN
Bucket Capacity - Heaped4.3 yd33.3 m3
Bucket Capacity - Struck3.8 yd33 m3
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Manufacturer-published specifications.