John Deere 644K Specs (Weight, Lift Capacity, Hp, Dimensions)

Manufacturer John Deere
Model 644K
Type Wheel Loader
Horsepower 232 hp (173,0 kW)
Weight 43560 lbs (19758,5 kg)
Tipping Capacity 29030 lbs (13167,8 kg)
Max Speed 22.8 mph (36,7 km/h)
Engine Model 6068H
No Of Cylinders 6
Aspiration Turbocharged charge air cooled
Displacement 414 cu in. (6784,3 cc)
Alternator Supplied Amperage 80 amps
Operating Voltage 24 V
Rated Speed 1700 RPM
Torque Speed 1400 RPM
Net Power 232 hp (173,0 kW)
Peak Torque 749 lbs ft (1015,5 N-m)
Torque Rise 55 %
Fuel Capacity 93 gal (352,0 l)
Engine Oil Capacity 6.5 gal (24,6 l)
Cooling Capacity 7.8 gal (29,5 l)
Hydraulic System Capacity 29.1 gal (110,2 l)
Transmission Oil Capacity 6.1 gal (23,1 l)
Differential Front Capacity 5.9 gal (22,3 l)
Differential Rear Capacity 5.9 gal (22,3 l)
Transmission Type Power shift
No of Forward Gears 4
No of Reverse Gears 3
Rear Axle Oscillation 26°
Max Speed (Forward) 22.8 mph (36,7 km/h)
Max Speed (Reverse) 15.5 mph (24,9 km/h)
Pump type Variable axial piston
Pump Flow 81.9 GPM (310,0 LPM)
Relief Pressure 3650 psi (251,7 bar)
Raise Lift Arms 6.1 sec
Lower Lift Time 2.8 sec
Bucket Dump Time 1.9 sec
Operating Weight 43560 lbs (19758,5 kg)
Tipping Load 29030 lbs (13167,8 kg)
Bucket Capacity (Heaped) 3.9 cu yds (3,0 m³)
Bucket Capacity (Struck) 3.4 cu yds (2,6 m³)
Bucket Width 120 in (304,8 cm)
Breakout Force 26520 lbs (12029,3 kg)
Reach At Max Lift And Dump 48 in (121,9 cm)
Dump Clearance At Max Raise 108 in (274,3 cm)
Turning Radius 216 in (548,6 cm)
Wheelbase 132 in (335,3 cm)
Bucket Hinge Pin 168 in (426,7 cm)
Cab Height 132 in (335,3 cm)
Overall Length 336 in (853,4 cm)
Ground Clearance 24 in (61,0 cm)
Width Over Tires 108 in (274,3 cm)
Tire Size 23.5 R25

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