vs.

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

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

      Sizes

      Radius at maximum lifting and unloading 1130 mm and 1055 mm 7 % more or 75 mm

      Shovel

      Breakout power 141.2 kN and 152.8 kN 8 % less or 11.6 kN
      Bucket capacity with top 3.6 m3 and 3.4 m3 6 % more or 0.2 m3
      Brimmed bucket capacity 3.2 m3 and 2.9 m3 9 % more or 0.3 m3

      Operation

      Static tipping weight 16489 kg and 14019 kg 15 % more or 2470 kg
      Fuel Capacity 352 l. and 341 l. 3 % more or 11 l.
      Generator current strength 80 amperes and 55 amperes 31 % more or 25 amperes
      Engine oil volume 28 l. and 25 l. 11 % more or 3 l.
      Cooling system fluid volume 34 l. and 29 l. 15 % more or 5 l.

      Motor

      Effective power 196.9 kW and 134 kW 32 % more or 62.9 kW
      Displacement 9 l. and 8.1 l. 10 % more or 0.9 l.
      Maximum torque 1155.2 Nm and 1010.1 Nm 13 % more or 145.1 Nm

      Hydraulic system

      Pump bandwidth 310 l/min and 280 l/min 10 % more or 30 l/min
      Lifting time 5.5 sec and 6 sec 8 % less or 0.5 sec

      11 reasons to buy John Deere 644H MH:

      Sizes

      Clearance 473 mm and 410 mm 13 % more or 63 mm

      Shovel

      Unloading ground clearance at maximum lifting 2962 mm and 2790 mm 6 % more or 172 mm

      Operation

      Rear axle / differential fluid volume 27 l. and 22 l. 19 % more or 5 l.
      Turn radius 5500 mm and 5640 mm 2 % less or 140 mm
      Hydraulic system fluid volume 117 l. and 110 l. 6 % more or 7 l.
      Transmission fluid volume 26 l. and 24 l. 8 % more or 2 l.
      Front axle / differential fluid volume 27 l. and 22 l. 19 % more or 5 l.

      Motor

      Torque increase 40 % and 36 % 10 % more or 4 %
      Power measured at 2200 rev / min and 1800 rev / min 18 % more or 400 rev

      Gear box

      Maximum forward speed 39 km/h and 35.6 km/h 9 % more or 3.4 km/h
      Maximum reverse gear 26.7 km/h and 24.2 km/h 9 % more or 2.5 km/h

      Neutral reasons:

      Sizes

      Between tyres width 2880 mm and 2874 mm
      Height to cab upper part 3380 mm and 3412 mm
      Wheelbase 3260 mm and 3200 mm
      Hinge axis maximum height 4070 mm and 4156 mm
      Length with bucket on ground level 8340 mm and 7815 mm

      Shovel

      Shovel width 3040 mm and 3040 mm

      Operation

      Working weight 19130 kg and 17657 kg
      Operating voltage 24 V and 24 V
      Rear axle oscillating 26 degrees and 26 degrees
      Tyre size 23.5 R25 and 23.5-25

      Motor

      Aspiration Turbocharger with charge air cooler by oncoming air flow and Turbocharging with subsequent air cooling (by a cooling radiator)
      Torque measured at 1300 rev / min and 1300 rev / min
      Cylinders number 6 and 6
      Manufacturer John Deere and John Deere
      Model 6090H, III Level III certified and 6081H

      Hydraulic system

      Unloading time 1.2 sec and 1.2 sec
      Lowering time 3 sec and 3 sec
      Type of pump variable displacement axial piston pump and piston pump
      Overflow valve pressure 25165.8 kPa and 24850 kPa

      Gear box

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

      Images

      Sizes

      4. Wheelbase 3260 mm 4. Wheelbase 3200 mm
      5. Clearance 410 mm 5. Clearance 473 mm
      6. Hinge axis maximum height 4070 mm 6. Hinge axis maximum height 4156 mm
      8. Radius at maximum lifting and unloading 1130 mm 8. Radius at maximum lifting and unloading 1055 mm
      1. Length with bucket on ground level 8340 mm 1. Length with bucket on ground level 7815 mm
      2. Between tyres width 2880 mm 2. Between tyres width 2874 mm
      3. Height to cab upper part 3380 mm 3. Height to cab upper part 3412 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2790 mm 7. Unloading ground clearance at maximum lifting 2962 mm