Construction Machinery. Wheel-Mounted Loader John Deere 644H High-Lift

Sizes

Length with bucket on ground level 8525 mm
Between tyres width 2697 mm
Height to cab upper part 3400 mm
Clearance 461 mm
Wheelbase 3200 mm
Hinge axis maximum height 4569 mm
Radius at maximum lifting and unloading 1175 mm

Shovel

Breakout power 136 kN
Unloading ground clearance at maximum lifting 3375 mm
Shovel width 2900 mm
Bucket capacity with top 3.3 m3
Brimmed bucket capacity 2.8 m3

Operation

Working weight 17690 kg
Fuel Capacity 341 l.
Hydraulic system fluid volume 117 l.
Engine oil volume 25 l.
Cooling system fluid volume 29 l.
Transmission fluid volume 26 l.
Front axle / differential fluid volume 27 l.
Rear axle / differential fluid volume 27 l.
Static tipping weight 11248 kg
Turn radius 5500 mm
Operating voltage 24 V
Generator current strength 55 amperes
Rear axle oscillating 26 degrees
Tyre size 20.5-25

Motor

Manufacturer John Deere
Model 6081H
Effective power 134.2 kW
Full power 153 kW
Power measured at 2200 rev / min
Displacement 8.1 l.
Torque measured at 1300 rev / min
Cylinders number 6
Maximum torque 1010 Nm
Aspiration Turbocharging with subsequent air cooling (by a cooling radiator)

Hydraulic system

Type of pump piston pump
Overflow valve pressure 24821.1 kPa
Pump bandwidth 257.4 l/min
Lifting time 6.2 sec
Unloading time 1.4 sec
Lowering time 3 sec

Gear box

Transmission type powershift
Forward gears number 4
Reverse gears number 3
Maximum forward speed 39 km/h
Maximum reverse gear 26.7 km/h

Images

Sizes

1. Length with bucket on ground level 8525 mm
2. Between tyres width 2697 mm
3. Height to cab upper part 3400 mm
4. Wheelbase 3200 mm
5. Clearance 461 mm
6. Hinge axis maximum height 4569 mm
8. Radius at maximum lifting and unloading 1175 mm

Shovel

7. Unloading ground clearance at maximum lifting 3375 mm