vs.

      John Deere 844K Z-Bar vs. John Deere 744J Z-Bar

      18 reasons to buy John Deere 844K Z-Bar:

      Sizes

      Radius at maximum lifting and unloading 1490 mm and 1210 mm 19 % more or 280 mm

      Shovel

      Bucket capacity with top 5.5 m3 and 4 m3 27 % more or 1.5 m3
      Brimmed bucket capacity 4.7 m3 and 3.4 m3 28 % more or 1.3 m3
      Unloading ground clearance at maximum lifting 3320 mm and 3090 mm 7 % more or 230 mm

      Operation

      Fuel Capacity 553 l. and 462 l. 16 % more or 91 l.
      Hydraulic system fluid volume 244 l. and 144 l. 41 % more or 100 l.
      Cooling system fluid volume 52 l. and 38 l. 27 % more or 14 l.
      Transmission fluid volume 45.4 l. and 28 l. 38 % more or 17.4 l.
      Front axle / differential fluid volume 55 l. and 46 l. 16 % more or 9 l.
      Rear axle / differential fluid volume 59 l. and 46 l. 22 % more or 13 l.
      Static tipping weight 23355 kg and 17680 kg 24 % more or 5675 kg

      Motor

      Maximum torque 1793.7 Nm and 1315 Nm 27 % more or 478.7 Nm
      Torque increase 44 % and 40 % 9 % more or 4 %
      Effective power 283.4 kW and 198 kW 30 % more or 85.4 kW
      Displacement 13.5 l. and 12.6 l. 7 % more or 0.9 l.

      Hydraulic system

      Pump bandwidth 621 l/min and 394 l/min 37 % more or 227 l/min
      Lifting time 5.9 sec and 6.5 sec 9 % less or 0.6 sec

      Gear box

      Maximum forward speed 40.5 km/h and 39.4 km/h 3 % more or 1.1 km/h

      7 reasons to buy John Deere 744J Z-Bar:

      Shovel

      Breakout power 198.1 kN and 212.9 kN 7 % less or 14.8 kN

      Operation

      Turn radius 6140 mm and 6300 mm 3 % less or 160 mm

      Motor

      Torque measured at 1100 rev / min and 900 rev / min 18 % more or 200 rev
      Power measured at 2000 rev / min and 1600 rev / min 20 % more or 400 rev

      Hydraulic system

      Unloading time 1.5 sec and 1.9 sec 21 % less or 0.4 sec
      Lowering time 3 sec and 3.5 sec 14 % less or 0.5 sec

      Gear box

      Maximum reverse gear 31.1 km/h and 27.3 km/h 12 % more or 3.8 km/h

      Neutral reasons:

      Sizes

      Length with bucket on ground level 9650 mm and 8510 mm
      Between tyres width 3194 mm and 2936 mm
      Height to cab upper part 3760 mm and 3530 mm
      Clearance 460 mm and 460 mm
      Wheelbase 3700 mm and 3400 mm
      Hinge axis maximum height 4620 mm and 4290 mm

      Shovel

      Shovel width 3460 mm and 3040 mm

      Operation

      Generator current strength 80 amperes and 80 amperes
      Rear axle oscillating 26 degrees and 26 degrees
      Tyre size 29.5 R 25 and 26.5 R25
      Working weight 32037 kg and 23345 kg
      Engine oil volume 38 l. and 38 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 turbocharging / air cooling
      Manufacturer John Deere and John Deere
      Model 6135H, III Level III certified and 6125H

      Hydraulic system

      Type of pump two variable displacement piston pumps, axial, with load sensing and variable displacement axial piston pump
      Overflow valve pressure 24131.6 kPa and 22050 kPa

      Gear box

      Transmission type Powershift transmission of intermediate type and automatic transmission system with power gear shifting
      Forward gears number 4 and 4
      Reverse gears number 3 and 3

      Images

      Sizes

      2. Between tyres width 3194 mm 2. Between tyres width 2936 mm
      3. Height to cab upper part 3760 mm 3. Height to cab upper part 3530 mm
      4. Wheelbase 3700 mm 4. Wheelbase 3400 mm
      5. Clearance 460 mm 5. Clearance 460 mm
      6. Hinge axis maximum height 4620 mm 6. Hinge axis maximum height 4290 mm
      8. Radius at maximum lifting and unloading 1490 mm 8. Radius at maximum lifting and unloading 1210 mm
      1. Length with bucket on ground level 9650 mm 1. Length with bucket on ground level 8510 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 3320 mm 7. Unloading ground clearance at maximum lifting 3090 mm