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- John Deere 644H High-Lift vs. JCB 456ZX
John Deere 644H High-Lift vs. JCB 456ZX
14 reasons to buy John Deere 644H High-Lift:
Shovel
Breakout power | 136 kN and 161 kN | 16 % less or 25 kN |
Unloading ground clearance at maximum lifting | 3375 mm and 2949 mm | 13 % more or 426 mm |
Bucket capacity with top | 3.3 m3 and 3.1 m3 | 6 % more or 0.2 m3 |
Brimmed bucket capacity | 2.8 m3 and 2.5 m3 | 11 % more or 0.3 m3 |
Operation
Turn radius | 5500 mm and 6630 mm | 17 % less or 1130 mm |
Fuel Capacity | 341 l. and 320 l. | 6 % more or 21 l. |
Engine oil volume | 25 l. and 18.9 l. | 24 % more or 6.1 l. |
Motor
Effective power | 134.2 kW and 114.1 kW | 15 % more or 20.1 kW |
Full power | 153 kW and 120.1 kW | 22 % more or 32.9 kW |
Maximum torque | 1010 Nm and 994 Nm | 2 % more or 16 Nm |
Hydraulic system
Lowering time | 3 sec and 4.1 sec | 27 % less or 1.1 sec |
Pump bandwidth | 257.4 l/min and 163 l/min | 37 % more or 94.4 l/min |
Gear box
Maximum forward speed | 39 km/h and 37.4 km/h | 4 % more or 1.6 km/h |
Maximum reverse gear | 26.7 km/h and 24.4 km/h | 9 % more or 2.3 km/h |
13 reasons to buy JCB 456ZX:
Sizes
Clearance | 470 mm and 461 mm | 2 % more or 9 mm |
Radius at maximum lifting and unloading | 1340 mm and 1175 mm | 12 % more or 165 mm |
Operation
Rear axle / differential fluid volume | 51 l. and 27 l. | 47 % more or 24 l. |
Static tipping weight | 14635 kg and 11248 kg | 23 % more or 3387 kg |
Hydraulic system fluid volume | 215 l. and 117 l. | 46 % more or 98 l. |
Generator current strength | 70 amperes and 55 amperes | 21 % more or 15 amperes |
Cooling system fluid volume | 40 l. and 29 l. | 27 % more or 11 l. |
Transmission fluid volume | 34 l. and 26 l. | 24 % more or 8 l. |
Front axle / differential fluid volume | 69 l. and 27 l. | 61 % more or 42 l. |
Motor
Displacement | 8.3 l. and 8.1 l. | 2 % more or 0.2 l. |
Torque measured at | 1400 rev / min and 1300 rev / min | 7 % more or 100 rev |
Hydraulic system
Unloading time | 1.2 sec and 1.4 sec | 14 % less or 0.2 sec |
Lifting time | 5.8 sec and 6.2 sec | 6 % less or 0.4 sec |
Neutral reasons:
Sizes
Between tyres width | 2697 mm and 2702 mm |
Length with bucket on ground level | 8525 mm and 7960 mm |
Height to cab upper part | 3400 mm and 3370 mm |
Wheelbase | 3200 mm and 3300 mm |
Hinge axis maximum height | 4569 mm and 4107 mm |
Shovel
Shovel width | 2900 mm and 2837 mm |
Operation
Working weight | 17690 kg and 22079 kg |
Operating voltage | 24 V and 24 V |
Rear axle oscillating | 26 degrees and 25 degrees |
Tyre size | 20.5-25 and 23.5R25 HXA (L3) |
Motor
Aspiration | Turbocharging with subsequent air cooling (by a cooling radiator) and turbocharging |
Model | 6081H and 6CT 8.3C |
Power measured at | 2200 rev / min and 2200 rev / min |
Cylinders number | 6 and 6 |
Manufacturer | John Deere and JCB |
Hydraulic system
Type of pump | piston pump and twin variable displacement piston pumps |
Overflow valve pressure | 24821.1 kPa and 24993.5 kPa |
Gear box
Forward gears number | 4 and 4 |
Reverse gears number | 3 and 3 |
Transmission type | powershift and smooth power shifting |
Images
Sizes
1. Length with bucket on ground level | 8525 mm | 1. Length with bucket on ground level | 7960 mm |
2. Between tyres width | 2697 mm | 2. Between tyres width | 2702 mm |
3. Height to cab upper part | 3400 mm | 3. Height to cab upper part | 3370 mm |
4. Wheelbase | 3200 mm | 4. Wheelbase | 3300 mm |
5. Clearance | 461 mm | 5. Clearance | 470 mm |
6. Hinge axis maximum height | 4569 mm | 6. Hinge axis maximum height | 4107 mm |
8. Radius at maximum lifting and unloading | 1175 mm | 8. Radius at maximum lifting and unloading | 1340 mm |
Shovel
7. Unloading ground clearance at maximum lifting | 3375 mm | 7. Unloading ground clearance at maximum lifting | 2949 mm |