John Deere 644J Z-Bar Wheel Loader Specs

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644J Z-Bar ➔

Bucket

John Deere 644J Z-Bar Wheel Loader Bucket specifications
Breakout Force	34,407.00 lbs (15,606.77 kg)
Bucket Capacity - heaped	4.30 cu yd (3.29 cu m)
Bucket Capacity - struck	3.70 cu yd (2.83 cu m)
Bucket Width	9.50 ft (2.90 m)
Dump Clearance at Max Raise	9.70 ft (2.96 m)

Dimensions

John Deere 644J Z-Bar Wheel Loader Dimensions specifications
Ground Clearance	1.50 ft (0.46 m)
Height - Top of Cab	11.20 ft (3.41 m)
Hinge Pin - Max Height	13.60 ft (4.15 m)
Length with Bucket on Ground	26.50 ft (8.08 m)
Reach at Max Lift and Dump	3.70 ft (1.13 m)
Wheelbase	10.50 ft (3.20 m)
Width Over Tires	9.50 ft (2.90 m)

Engine

John Deere 644J Z-Bar Wheel Loader Engine specifications
Aspiration	Turbocharged charge air cooled
Displacement	414.00 cu in (6,784.26 cu cm)
Engine Model	6068H
Net Power	185.00 hp (137.96 kw)
Number of Cylinders	6
Power Measured @	2200 rpm
Torque Measured @	1400 rpm
Torque Rise	55%

Hydraulic System

John Deere 644J Z-Bar Wheel Loader Hydraulic System specifications
Dump Time	1.4 seconds
Lower Time	3 seconds
Pump Flow Capacity	68.00 gpm (257.38 lpm)
Pump Type	Variable axial piston
Raise Time	6.2 seconds
Relief Valve Setting	3600 psi

Operating Specifications

John Deere 644J Z-Bar Wheel Loader Operating Specifications specifications
Alternator Supplied Amperage	80 amps
Cooling System Fluid Capacity	7.80 gal (29.52 l)
Engine Oil Fluid Capacity	6.50 gal (24.60 l)
Front Axle/Diff Fluid Capacity	5.90 gal (22.33 l)
Fuel Capacity	93.00 gal (352.01 l)
Hydraulic System Fluid Capacity	31.00 gal (117.34 l)
Operating Voltage	24 volts
Operating Weight	40,150.00 lbs (18,211.76 kg)
Rear Axle Oscillation	26 degrees
Rear Axle/Diff Fluid Capacity	5.90 gal (22.33 l)
Static Tipping Weight	34,379.00 lbs (15,594.07 kg)
Tire Size	23.5 R25
Transmission Fluid Capacity	7.10 gal (26.87 l)
Turning Radius	18.00 ft (5.49 m)

Transmission

John Deere 644J Z-Bar Wheel Loader Transmission specifications
Max Speed - Forward	22.00 mph (35.41 kph)
Max Speed - Reverse	15.50 mph (24.94 kph)
Number of Forward Gears	4
Number of Reverse Gears	3
Transmission Type	Automatic powershift

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