vs.

      John Deere 824K Z-Bar vs. John Deere 644J High-Lift

      19 reasons to buy John Deere 824K Z-Bar:

      Sizes

      Radius at maximum lifting and unloading 1280 mm and 1170 mm 9 % more or 110 mm

      Shovel

      Bucket capacity with top 4.6 m3 and 3 m3 35 % more or 1.6 m3

      Operation

      Cooling system fluid volume 47.4 l. and 29.5 l. 38 % more or 17.9 l.
      Hydraulic system fluid volume 159 l. and 117 l. 26 % more or 42 l.
      Engine oil volume 37.9 l. and 24.5 l. 35 % more or 13.4 l.
      Transmission fluid volume 27.9 l. and 26.5 l. 5 % more or 1.4 l.
      Front axle / differential fluid volume 45.9 l. and 22 l. 52 % more or 23.9 l.
      Rear axle / differential fluid volume 45.9 l. and 22 l. 52 % more or 23.9 l.
      Static tipping weight 20508 kg and 12560 kg 39 % more or 7948 kg
      Fuel Capacity 469.4 l. and 352 l. 25 % more or 117.4 l.

      Motor

      Effective power 248.3 kW and 138 kW 44 % more or 110.3 kW
      Displacement 13.5 l. and 6.8 l. 50 % more or 6.7 l.
      Maximum torque 1618.8 Nm and 1016 Nm 37 % more or 602.8 Nm
      Torque increase 59 % and 55 % 7 % more or 4 %

      Hydraulic system

      Pump bandwidth 513 l/min and 257 l/min 50 % more or 256 l/min
      Unloading time 1.3 sec and 1.9 sec 32 % less or 0.6 sec
      Lowering time 2.5 sec and 2.8 sec 11 % less or 0.3 sec

      Gear box

      Maximum reverse gear 30.1 km/h and 25 km/h 17 % more or 5.1 km/h
      Maximum forward speed 40 km/h and 35.4 km/h 11 % more or 4.6 km/h

      5 reasons to buy John Deere 644J High-Lift:

      Shovel

      Breakout power 136 kN and 185.4 kN 27 % less or 49.4 kN
      Unloading ground clearance at maximum lifting 3380 mm and 3190 mm 6 % more or 190 mm

      Operation

      Turn radius 5.5 mm and 5920 mm 100 % less or 5914.5 mm

      Motor

      Power measured at 2200 rev / min and 1600 rev / min 27 % more or 600 rev
      Torque measured at 1400 rev / min and 900 rev / min 36 % more or 500 rev

      Neutral reasons:

      Sizes

      Wheelbase 3460 mm and 3200 mm
      Hinge axis maximum height 4480 mm and 4570 mm
      Length with bucket on ground level 9260 mm and 8530 mm
      Height to cab upper part 3500 mm and 3400 mm
      Clearance 460 mm and 460 mm

      Shovel

      Shovel width 3270 mm and 2971.8 mm

      Operation

      Operating voltage 24 V and 24 V
      Generator current strength 80 amperes and 80 amperes
      Rear axle oscillating 26 degrees and 24 degrees
      Tyre size 26.5 R 25 and 23.5 R25
      Working weight 26210 kg and 18425 kg

      Motor

      Manufacturer John Deere and John Deere
      Model 6135H, III Level III certified and 6068H
      Cylinders number 6 and 6
      Aspiration Turbocharger with charge air cooler by oncoming air flow and Turbocharger with charge air cooler by oncoming air flow

      Hydraulic system

      Overflow valve pressure 25165.8 kPa and 24800 kPa
      Type of pump two variable displacement piston pumps, axial, with load sensing and variable displacement axial piston pump
      Lifting time 5.9 sec and 5.9 sec

      Gear box

      Transmission type Powershift transmission of intermediate type and automatic transmission system with power gear shifting
      Forward gears number 4 and 4
      Reverse gears number 3 and 3

      Images

      Sizes

      1. Length with bucket on ground level 9260 mm 1. Length with bucket on ground level 8530 mm
      3. Height to cab upper part 3500 mm 3. Height to cab upper part 3400 mm
      4. Wheelbase 3460 mm 4. Wheelbase 3200 mm
      5. Clearance 460 mm 5. Clearance 460 mm
      6. Hinge axis maximum height 4480 mm 6. Hinge axis maximum height 4570 mm
      8. Radius at maximum lifting and unloading 1280 mm 8. Radius at maximum lifting and unloading 1170 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 3190 mm 7. Unloading ground clearance at maximum lifting 3380 mm