- Dump Clearance At Max Raise: 9.67 ft / 2950 mm
- Bucket Capacity - Heaped: 4.25 yd3 / 3.2 m3
- Bucket Capacity - Struck: 3.7 yd3 / 2.8 m3
- Bucket Width: 9.5 ft / 2895.6 mm
Published dimensions and weight
John Deere 644J Z-Bar
The John Deere 644J Z-Bar is a wheel loader of about 18.2 t; its 6068H engine is rated at 185 hp.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Operating Weight40150 lb18212 kg
03Selected published values47
Wheel loaders are commonly used to load, carry and stockpile loose material on prepared surfaces. Published rows for John Deere 644J Z-Bar include published bucket capacity of 4.25 yd3 / 3.2 m3, published breakout force of 34407 lb / 153 kN, published operating weight of 40150 lb / 18212 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 (9.67 ft / 2950 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Bucket Capacity - Heaped” field (4.25 yd3 / 3.2 m3) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Bucket Capacity - Struck” field (3.7 yd3 / 2.8 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 Raise9.67 ft2950 mm
Bucket Capacity - Heaped4.25 yd33.2 m3
Bucket Capacity - Struck3.7 yd32.8 m3
Bucket Width9.5 ft2895.6 mm
Breakout Force34407 lb153 kN
Dimensions
Ground Clearance1.42 ft434 mm
Length With Bucket On Ground26.42 ft8050 mm
Width Over Tires9.43 ft2875 mm
Height To Top Of Cab11.17 ft3400 mm
Wheelbase10.5 ft3200 mm
Hinge Pin - Max Height13.58 ft4140 mm
Reach At Max Lift And Dump3.67 ft1120 mm
Engine
Number Of Cylinders66
Engine Make22402240
Engine Model6068H6068H
Net Power185 hp138 kw
Power Measured @2200 rpm2200 rpm
Max Torque749 lb ft1016 Nm
Displacement414 cu in6.8 L
Torque Measured @1400 rpm1400 rpm
AspirationTurbocharged charge air cooledTurbocharged charge air cooled
Torque Rise55 %55 %
Operational
Operating Weight40150 lb18212 kg
Fuel Capacity93 gal352 L
Hydraulic System Fluid Capacity31 gal117 L
Engine Oil Fluid Capacity6.5 gal24.5 L
Cooling System Fluid Capacity7.8 gal29.5 L
Transmission Fluid Capacity7.1 gal26.5 L
Front Axle/Diff Fluid Capacity5.9 gal22 L
Rear Axle/Diff Fluid Capacity5.9 gal22 L
Static Tipping Weight34379 lb15594 kg
Turning Radius18 ft5490 mm
Operating Voltage24 V24 V
Alternator Supplied Amperage80 amps80 amps
Rear Axle Oscillation26 degrees26 degrees
Tire Size23.5 R2523.5 R25
Transmission
Transmission TypeAutomatic powershiftAutomatic powershift
Number Of Forward Gears44
Number Of Reverse Gears33
Max Speed - Forward22 mph35.4 km/h
Max Speed - Reverse15.5 mph25 km/h
Hydraulic System
Relief Valve Setting3600 psi24800 kPa
Pump Flow Capacity68 gal/min257 L/min
Raise Time6.2 sec6.2 sec
Dump Time1.4 sec1.4 sec
Lower Time3 sec3 sec
Pump TypeVariable axial pistonVariable axial piston
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Manufacturer-published specifications.