vs.

      John Deere 644K Z-Bar vs. Caterpillar R2900G

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

      Shovel

      Breakout power 33903 pound and 60298 pound 44 % less or 26395 pound

      Operation

      Turn radius 5570 mm and 7323 mm 24 % less or 1753 mm

      Hydraulic system

      Lifting time 5.5 sec and 9.2 sec 40 % less or 3.7 sec
      Unloading time 1.4 sec and 3.4 sec 59 % less or 2.0 sec
      Lowering time 3 sec and 3.1 sec 3 % less or 0.1 sec

      Gear box

      Maximum forward speed 36.6 km/h and 25.3 km/h 31 % more or 11.3 km/h

      17 reasons to buy Caterpillar R2900G:

      Sizes

      Radius at maximum lifting and unloading 1652 mm and 1120 mm 32 % more or 532 mm
      Clearance 457.2 mm and 408 mm 11 % more or 49.2 mm

      Shovel

      Unloading ground clearance at maximum lifting 2871.2 mm and 2860 mm 0 % more or 11.2 mm
      Bucket capacity with top 7.2 m3 and 3.2 m3 56 % more or 4.0 m3

      Operation

      Fuel Capacity 854 l. and 352 l. 59 % more or 502 l.
      Hydraulic system fluid volume 140 l. and 110 l. 21 % more or 30 l.
      Engine oil volume 34 l. and 24.5 l. 28 % more or 9.5 l.
      Cooling system fluid volume 75 l. and 29.5 l. 61 % more or 45.5 l.
      Transmission fluid volume 62 l. and 23 l. 63 % more or 39 l.
      Front axle / differential fluid volume 119 l. and 22 l. 82 % more or 97 l.
      Rear axle / differential fluid volume 127 l. and 22 l. 83 % more or 105 l.
      Static tipping weight 39923 kg and 15230 kg 62 % more or 24693 kg

      Motor

      Effective power 290.1 kW and 173 kW 40 % more or 117.1 kW
      Power measured at 1900 rev / min and 1700 rev / min 11 % more or 200 rev
      Displacement 15.2 l. and 6.8 l. 55 % more or 8.4 l.

      Gear box

      Reverse gears number 4 and 3 25 % more or 1
      Maximum reverse gear 26.4 km/h and 24.9 km/h 6 % more or 1.5 km/h

      Neutral reasons:

      Sizes

      Wheelbase 3260 mm and 3785.6 mm
      Hinge axis maximum height 4070 mm and 4547.6 mm
      Length with bucket on ground level 8140 mm and 11302 mm
      Between tyres width 2875 mm and 2996.2 mm
      Height to cab upper part 3380 mm and 2895.6 mm

      Shovel

      Shovel width 3040 mm and 3048 mm

      Operation

      Tyre size 23.5 R25 and 29.5 x 29 34 layers STMS
      Rear axle oscillating 26 degrees and 16 degrees
      Working weight 18160 kg and 67409 kg

      Motor

      Model 6068H, III Level III certified and C15 ACERT
      Manufacturer John Deere and Caterpillar

      Gear box

      Forward gears number 4 and 4

      Images

      Sizes

      2. Between tyres width 2875 mm 2. Between tyres width 2996.2 mm
      3. Height to cab upper part 3380 mm 3. Height to cab upper part 2895.6 mm
      4. Wheelbase 3260 mm 4. Wheelbase 3785.6 mm
      5. Clearance 408 mm 5. Clearance 457.2 mm
      6. Hinge axis maximum height 4070 mm 6. Hinge axis maximum height 4547.6 mm
      8. Radius at maximum lifting and unloading 1120 mm 8. Radius at maximum lifting and unloading 1652 mm
      1. Length with bucket on ground level 8140 mm 1. Length with bucket on ground level 11302 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2860 mm 7. Unloading ground clearance at maximum lifting 2871.2 mm