vs.

      John Deere 644H MH vs. Komatsu WA800-3 Level 2

      8 reasons to buy John Deere 644H MH:

      Shovel

      Breakout power 152.8 kN and 676.7 kN 77 % less or 523.9 kN

      Operation

      Turn radius 5500 mm and 10900 mm 50 % less or 5400 mm

      Motor

      Power measured at 2200 rev / min and 2000 rev / min 9 % more or 200 rev

      Hydraulic system

      Unloading time 1.2 sec and 2 sec 40 % less or 0.8 sec
      Lowering time 3 sec and 4.8 sec 37 % less or 1.8 sec
      Lifting time 6 sec and 11.2 sec 46 % less or 5.2 sec

      Gear box

      Forward gears number 4 and 3 25 % more or 1
      Maximum forward speed 39 km/h and 28 km/h 28 % more or 11 km/h

      20 reasons to buy Komatsu WA800-3 Level 2:

      Sizes

      Clearance 550 mm and 473 mm 14 % more or 77 mm
      Radius at maximum lifting and unloading 2385 mm and 1055 mm 56 % more or 1330 mm

      Shovel

      Unloading ground clearance at maximum lifting 4630 mm and 2962 mm 36 % more or 1668 mm
      Bucket capacity with top 11 m3 and 3.4 m3 69 % more or 7.6 m3
      Brimmed bucket capacity 9.3 m3 and 2.9 m3 69 % more or 6.4 m3

      Operation

      Rear axle / differential fluid volume 360 l. and 27 l. 92 % more or 333 l.
      Static tipping weight 61089.8 kg and 14019 kg 77 % more or 47070.8 kg
      Fuel Capacity 1555 l. and 341 l. 78 % more or 1214 l.
      Hydraulic system fluid volume 724.9 l. and 117 l. 84 % more or 607.9 l.
      Engine oil volume 129.8 l. and 25 l. 81 % more or 104.8 l.
      Generator current strength 90 amperes and 55 amperes 39 % more or 35 amperes
      Cooling system fluid volume 336.9 l. and 29 l. 91 % more or 307.9 l.
      Transmission fluid volume 140.1 l. and 26 l. 81 % more or 114.1 l.
      Front axle / differential fluid volume 360 l. and 27 l. 92 % more or 333 l.

      Motor

      Effective power 602.5 kW and 134 kW 78 % more or 468.5 kW
      Full power 636.1 kW and 158 kW 75 % more or 478.1 kW
      Displacement 30.5 l. and 8.1 l. 73 % more or 22.4 l.
      Cylinders number 12 and 6 50 % more or 6

      Hydraulic system

      Pump bandwidth 405 l/min and 280 l/min 31 % more or 125 l/min

      Gear box

      Maximum reverse gear 28.3 km/h and 26.7 km/h 6 % more or 1.6 km/h

      Neutral reasons:

      Sizes

      Between tyres width 2874 mm and 4585 mm
      Height to cab upper part 3412 mm and 5275 mm
      Wheelbase 3200 mm and 5450 mm
      Length with bucket on ground level 7815 mm and 13960 mm
      Hinge axis maximum height 4156 mm and 6785 mm

      Shovel

      Shovel width 3040 mm and 4810 mm

      Operation

      Working weight 17657 kg and 101899.5 kg
      Operating voltage 24 V and 24 V
      Rear axle oscillating 26 degrees and 22 degrees
      Tyre size 23.5-25 and 45/65-45-45

      Motor

      Aspiration Turbocharging with subsequent air cooling (by a cooling radiator) and Turbocharging with subsequent air cooling (by a cooling radiator)
      Manufacturer John Deere and Komatsu
      Model 6081H and SAA12V140E-3

      Hydraulic system

      Type of pump piston pump and piston pump
      Overflow valve pressure 24850 kPa and 31371.1 kPa

      Gear box

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

      Images

      Sizes

      4. Wheelbase 3200 mm 4. Wheelbase 5450 mm
      5. Clearance 473 mm 5. Clearance 550 mm
      6. Hinge axis maximum height 4156 mm 6. Hinge axis maximum height 6785 mm
      8. Radius at maximum lifting and unloading 1055 mm 8. Radius at maximum lifting and unloading 2385 mm
      1. Length with bucket on ground level 7815 mm 1. Length with bucket on ground level 13960 mm
      2. Between tyres width 2874 mm 2. Between tyres width 4585 mm
      3. Height to cab upper part 3412 mm 3. Height to cab upper part 5275 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2962 mm 7. Unloading ground clearance at maximum lifting 4630 mm