vs.

      John Deere 644K Z-Bar vs. John Deere 724K Z-Bar

      6 reasons to buy John Deere 644K Z-Bar:

      Shovel

      Unloading ground clearance at maximum lifting 2860 mm and 2790 mm 2 % more or 70 mm

      Operation

      Turn radius 5570 mm and 5640 mm 1 % less or 70 mm

      Motor

      Torque measured at 1400 rev / min and 1300 rev / min 7 % more or 100 rev
      Torque increase 55 % and 36 % 35 % more or 19 %

      Gear box

      Maximum forward speed 36.6 km/h and 35.6 km/h 3 % more or 1.0 km/h
      Maximum reverse gear 24.9 km/h and 24.2 km/h 3 % more or 0.7 km/h

      14 reasons to buy John Deere 724K Z-Bar:

      Sizes

      Clearance 410 mm and 408 mm 0 % more or 2 mm
      Radius at maximum lifting and unloading 1130 mm and 1120 mm 1 % more or 10 mm

      Shovel

      Bucket capacity with top 3.6 m3 and 3.2 m3 11 % more or 0.4 m3
      Brimmed bucket capacity 3.2 m3 and 2.8 m3 12 % more or 0.4 m3
      Breakout power 141.2 kN and 150.8 kN 6 % less or 9.6 kN

      Operation

      Engine oil volume 28 l. and 24.5 l. 12 % more or 3.5 l.
      Cooling system fluid volume 34 l. and 29.5 l. 13 % more or 4.5 l.
      Transmission fluid volume 24 l. and 23 l. 4 % more or 1 l.
      Static tipping weight 16489 kg and 15230 kg 8 % more or 1259 kg

      Motor

      Maximum torque 1155.2 Nm and 1016 Nm 12 % more or 139.2 Nm
      Effective power 196.9 kW and 173 kW 12 % more or 23.9 kW
      Power measured at 1800 rev / min and 1700 rev / min 6 % more or 100 rev
      Displacement 9 l. and 6.8 l. 24 % more or 2.2 l.

      Hydraulic system

      Unloading time 1.2 sec and 1.4 sec 14 % less or 0.2 sec

      Neutral reasons:

      Sizes

      Height to cab upper part 3380 mm and 3380 mm
      Wheelbase 3260 mm and 3260 mm
      Length with bucket on ground level 8140 mm and 8340 mm
      Hinge axis maximum height 4070 mm and 4070 mm
      Between tyres width 2875 mm and 2880 mm

      Shovel

      Shovel width 3040 mm and 3040 mm

      Operation

      Fuel Capacity 352 l. and 352 l.
      Generator current strength 80 amperes and 80 amperes
      Hydraulic system fluid volume 110 l. and 110 l.
      Rear axle oscillating 26 degrees and 26 degrees
      Tyre size 23.5 R25 and 23.5 R25
      Front axle / differential fluid volume 22 l. and 22 l.
      Working weight 18160 kg and 19130 kg
      Rear axle / differential fluid volume 22 l. and 22 l.
      Operating voltage 24 V and 24 V

      Motor

      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
      Manufacturer John Deere and John Deere
      Model 6068H, III Level III certified and 6090H, III Level III certified

      Hydraulic system

      Type of pump variable displacement axial piston pump and variable displacement axial piston pump
      Overflow valve pressure 25165.8 kPa and 25165.8 kPa
      Pump bandwidth 310 l/min and 310 l/min
      Lifting time 5.5 sec and 5.5 sec
      Lowering time 3 sec and 3 sec

      Gear box

      Transmission type Powershift transmission of intermediate type and Powershift transmission of intermediate type
      Forward gears number 4 and 4
      Reverse gears number 3 and 3

      Images

      Sizes

      2. Between tyres width 2875 mm 2. Between tyres width 2880 mm
      3. Height to cab upper part 3380 mm 3. Height to cab upper part 3380 mm
      4. Wheelbase 3260 mm 4. Wheelbase 3260 mm
      5. Clearance 408 mm 5. Clearance 410 mm
      6. Hinge axis maximum height 4070 mm 6. Hinge axis maximum height 4070 mm
      8. Radius at maximum lifting and unloading 1120 mm 8. Radius at maximum lifting and unloading 1130 mm
      1. Length with bucket on ground level 8140 mm 1. Length with bucket on ground level 8340 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2860 mm 7. Unloading ground clearance at maximum lifting 2790 mm