Construction Machinery. Wheel-Mounted Loader John Deere 644J Z-Bar

Sizes

Height to cab upper part 3400 mm
Clearance 434 mm
Wheelbase 3200 mm
Length with bucket on ground level 8050 mm
Hinge axis maximum height 4140 mm
Between tyres width 2875 mm
Radius at maximum lifting and unloading 1120 mm

Shovel

Breakout power 153 kN
Unloading ground clearance at maximum lifting 2950 mm
Shovel width 2895.6 mm
Bucket capacity with top 3.2 m3
Brimmed bucket capacity 2.8 m3

Operation

Working weight 18212 kg
Fuel Capacity 352 l.
Hydraulic system fluid volume 117 l.
Engine oil volume 24.5 l.
Cooling system fluid volume 29.5 l.
Transmission fluid volume 26.5 l.
Front axle / differential fluid volume 22 l.
Rear axle / differential fluid volume 22 l.
Static tipping weight 15594 kg
Turn radius 5490 mm
Operating voltage 24 V
Generator current strength 80 amperes
Rear axle oscillating 26 degrees
Tyre size 23.5 R25

Motor

Manufacturer John Deere
Model 6068H
Effective power 138 kW
Power measured at 2200 rev / min
Displacement 6.8 l.
Torque measured at 1400 rev / min
Cylinders number 6
Maximum torque 1016 Nm
Torque increase 55 %
Aspiration Turbocharger with charge air cooler by oncoming air flow

Hydraulic system

Overflow valve pressure 24800 kPa
Pump bandwidth 257 l/min
Lifting time 6.2 sec
Unloading time 1.4 sec
Lowering time 3 sec
Type of pump variable displacement axial piston pump

Gear box

Transmission type automatic powershift
Forward gears number 4
Reverse gears number 3
Maximum forward speed 35.4 km/h
Maximum reverse gear 25 km/h

Images

Sizes

1. Length with bucket on ground level 8050 mm
2. Between tyres width 2875 mm
3. Height to cab upper part 3400 mm
4. Wheelbase 3200 mm
5. Clearance 434 mm
6. Hinge axis maximum height 4140 mm
8. Radius at maximum lifting and unloading 1120 mm

Shovel

7. Unloading ground clearance at maximum lifting 2950 mm