Categories ↠ Wheel Loaders ↠ John Deere 644K Z-Bar

John Deere 644K Z-Bar Wheel Loader

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

General Specifications

Bucket

Breakout Force	33,903 lbs (15,378 kg)
Bucket Capacity - heaped	4 cu yd (3 cu m)
Bucket Capacity - struck	4 cu yd (3 cu m)
Bucket Width	10 ft (3 m)
Dump Clearance at Max Raise	9 ft (3 m)

Dimensions

Ground Clearance	1 ft (0 m)
Height - Top of Cab	11 ft (3 m)
Hinge Pin - Max Height	13 ft (4 m)
Length with Bucket on Ground	27 ft (8 m)
Reach at Max Lift and Dump	4 ft (1 m)
Wheelbase	11 ft (3 m)
Width Over Tires	10 ft (3 m)

Engine

Aspiration	Turbocharged charge air cooled
Displacement	414 cu in (6,784 cu cm)
Engine Model	6068H Tier III certified
Make	John Deere
Net Power	232 hp (173 kw)
Number of Cylinders	6
Power Measured @	1700 rpm
Torque Measured @	1400 rpm
Torque Rise	55%

Hydraulic System

Dump Time	1.4 seconds
Lower Time	3 seconds
Pump Flow Capacity	82 gpm (310 lpm)
Pump Type	Variable axial piston
Raise Time	5.5 seconds
Relief Valve Setting	3650 psi

Operating Specifications

Alternator Supplied Amperage	80 amps
Cooling System Fluid Capacity	8 gal (30 l)
Engine Oil Fluid Capacity	7 gal (25 l)
Front Axle/Diff Fluid Capacity	6 gal (22 l)
Fuel Capacity	93 gal (352 l)
Hydraulic System Fluid Capacity	29 gal (110 l)
Operating Voltage	24 volts
Operating Weight	40,036 lbs (18,160 kg)
Rated Bucket Capacity	4 cu yd (3 cu m)
Rear Axle Oscillation	26 degrees
Rear Axle/Diff Fluid Capacity	6 gal (22 l)
Static Tipping Weight	33,577 lbs (15,230 kg)
Tire Size	23.5 R25
Transmission Fluid Capacity	6 gal (23 l)
Turning Radius	18 ft (6 m)

Transmission

Max Speed - Forward	23 mph (37 kph)
Max Speed - Reverse	16 mph (25 kph)
Number of Forward Gears	4
Number of Reverse Gears	3
Transmission Type	Countershaft powershift

Weights

Operational Weight

40,036 lbs (18,160 kg)

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