vs.

      John Deere 644K Z-Bar vs. Case 1221EXR

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

      Operation

      Turn radius 5570 mm and 7590 mm 27 % less or 2020 mm
      Generator current strength 80 amperes and 70 amperes 12 % more or 10 amperes

      Motor

      Torque increase 55 % and 40 % 27 % more or 15 %

      Hydraulic system

      Lifting time 5.5 sec and 6.4 sec 14 % less or 0.9 sec

      Gear box

      Maximum forward speed 36.6 km/h and 34 km/h 7 % more or 2.6 km/h
      Maximum reverse gear 24.9 km/h and 23.7 km/h 5 % more or 1.2 km/h

      18 reasons to buy Case 1221EXR:

      Sizes

      Radius at maximum lifting and unloading 1400 mm and 1120 mm 20 % more or 280 mm
      Clearance 510 mm and 408 mm 20 % more or 102 mm

      Shovel

      Bucket capacity with top 4.3 m3 and 3.2 m3 26 % more or 1.1 m3
      Brimmed bucket capacity 5.1 m3 and 2.8 m3 45 % more or 2.3 m3
      Unloading ground clearance at maximum lifting 3750 mm and 2860 mm 24 % more or 890 mm

      Operation

      Static tipping weight 21799.7 kg and 15230 kg 30 % more or 6569.7 kg
      Transmission fluid volume 43 l. and 23 l. 47 % more or 20 l.
      Front axle / differential fluid volume 60 l. and 22 l. 63 % more or 38 l.
      Rear axle / differential fluid volume 60 l. and 22 l. 63 % more or 38 l.
      Fuel Capacity 470 l. and 352 l. 25 % more or 118 l.
      Hydraulic system fluid volume 340 l. and 110 l. 68 % more or 230 l.
      Engine oil volume 37 l. and 24.5 l. 34 % more or 12.5 l.
      Cooling system fluid volume 65 l. and 29.5 l. 55 % more or 35.5 l.

      Motor

      Power measured at 2200 rev / min and 1700 rev / min 23 % more or 500 rev
      Displacement 10.8 l. and 6.8 l. 37 % more or 4.0 l.
      Effective power 238.6 kW and 173 kW 27 % more or 65.6 kW
      Maximum torque 1674.4 Nm and 1016 Nm 39 % more or 658.4 Nm

      Hydraulic system

      Pump bandwidth 482 l/min and 310 l/min 36 % more or 172 l/min

      Neutral reasons:

      Sizes

      Length with bucket on ground level 8140 mm and 10020 mm
      Between tyres width 2875 mm and 3270 mm
      Height to cab upper part 3380 mm and 3840 mm
      Wheelbase 3260 mm and 3700 mm
      Hinge axis maximum height 4070 mm and 4960 mm

      Shovel

      Shovel width 3040 mm and 3450 mm

      Operation

      Operating voltage 24 V and 24 V
      Rear axle oscillating 26 degrees and 26 degrees
      Tyre size 23.5 R25 and 29.5 x 25
      Working weight 18160 kg and 30399.8 kg

      Motor

      Manufacturer John Deere and Cummins
      Model 6068H, III Level III certified and QSM11
      Torque measured at 1400 rev / min and 1400 rev / min
      Cylinders number 6 and 6
      Aspiration Turbocharger with charge air cooler by oncoming air flow and turbocharging

      Hydraulic system

      Unloading time 1.4 sec and 1.4 sec
      Lowering time 3 sec and 3 sec
      Overflow valve pressure 25165.8 kPa and 20615.3 kPa

      Gear box

      Forward gears number 4 and 4
      Reverse gears number 3 and 3

      Images

      Sizes

      6. Hinge axis maximum height 4070 mm 6. Hinge axis maximum height 4960 mm
      8. Radius at maximum lifting and unloading 1120 mm 8. Radius at maximum lifting and unloading 1400 mm
      1. Length with bucket on ground level 8140 mm 1. Length with bucket on ground level 10020 mm
      2. Between tyres width 2875 mm 2. Between tyres width 3270 mm
      3. Height to cab upper part 3380 mm 3. Height to cab upper part 3840 mm
      4. Wheelbase 3260 mm 4. Wheelbase 3700 mm
      5. Clearance 408 mm 5. Clearance 510 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2860 mm 7. Unloading ground clearance at maximum lifting 3750 mm