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- John Deere 644D vs. Case 321D
John Deere 644D vs. Case 321D
20 reasons to buy John Deere 644D:
Sizes
Clearance | 514 mm and 365 mm | 29 % more or 149 mm |
Radius at maximum lifting and unloading | 933 mm and 889 mm | 5 % more or 44 mm |
Shovel
Bucket capacity with top | 2.3 m3 and 1.1 m3 | 52 % more or 1.2 m3 |
Unloading ground clearance at maximum lifting | 2970 mm and 2659 mm | 10 % more or 311 mm |
Operation
Front axle / differential fluid volume | 23 l. and 3.7 l. | 84 % more or 19.3 l. |
Rear axle / differential fluid volume | 23 l. and 3.7 l. | 84 % more or 19.3 l. |
Static tipping weight | 11435.1 kg and 4307 kg | 62 % more or 7128.1 kg |
Fuel Capacity | 254 l. and 100 l. | 61 % more or 154 l. |
Hydraulic system fluid volume | 95 l. and 70 l. | 26 % more or 25 l. |
Engine oil volume | 19 l. and 7.5 l. | 61 % more or 11.5 l. |
Cooling system fluid volume | 28 l. and 13 l. | 54 % more or 15 l. |
Motor
Cylinders number | 6 and 4 | 33 % more or 2 |
Maximum torque | 650.8 Nm and 214.2 Nm | 67 % more or 436.6 Nm |
Effective power | 115.6 kW and 53.7 kW | 54 % more or 61.9 kW |
Full power | 123 kW and 55.9 kW | 55 % more or 67.1 kW |
Displacement | 7.6 l. and 3.1 l. | 59 % more or 4.5 l. |
Hydraulic system
Lifting time | 6.1 sec and 6.6 sec | 8 % less or 0.5 sec |
Pump bandwidth | 238.5 l/min and 71.9 l/min | 70 % more or 166.6 l/min |
Gear box
Forward gears number | 4 and 2 | 50 % more or 2 |
Maximum forward speed | 43.9 km/h and 20 km/h | 54 % more or 23.9 km/h |
8 reasons to buy Case 321D:
Shovel
Breakout power | 70.8 kN and 109 kN | 35 % less or 38.2 kN |
Operation
Turn radius | 4132 mm and 5029.2 mm | 18 % less or 897.2 mm |
Generator current strength | 55 amperes and 42 amperes | 24 % more or 13 amperes |
Motor
Torque measured at | 1600 rev / min and 1400 rev / min | 12 % more or 200 rev |
Power measured at | 2300 rev / min and 2200 rev / min | 4 % more or 100 rev |
Hydraulic system
Unloading time | 1.1 sec and 2 sec | 45 % less or 0.9 sec |
Lowering time | 3.5 sec and 4.3 sec | 19 % less or 0.8 sec |
Gear box
Maximum reverse gear | 20 km/h and 13.2 km/h | 34 % more or 6.8 km/h |
Neutral reasons:
Sizes
Length with bucket on ground level | 7034.8 mm and 5531 mm |
Between tyres width | 2605 mm and 1978 mm |
Height to cab upper part | 3200.4 mm and 2785 mm |
Wheelbase | 2920 mm and 2350 mm |
Hinge axis maximum height | 3861.8 mm and 3344 mm |
Shovel
Shovel width | 2660 mm and 2100 mm |
Operation
Tyre size | 20.5-25 and 405/70 R20 |
Operating voltage | 12 V and 12 V |
Working weight | 13300 kg and 5909.4 kg |
Rear axle oscillating | 22 degrees and 24 degrees |
Motor
Manufacturer | John Deere and Deutz |
Model | 6-466T and BF4M2011 |
Hydraulic system
Type of pump | gear type pump and Open-centered with pressure/flow compensation |
Overflow valve pressure | 18099 kPa and 159.7 kPa |
Gear box
Transmission type | planetary powershift transmission and hydrostatic |
Reverse gears number | 2 and 2 |
Images
Sizes
4. Wheelbase | 2920 mm | 4. Wheelbase | 2350 mm |
5. Clearance | 514 mm | 5. Clearance | 365 mm |
6. Hinge axis maximum height | 3861.8 mm | 6. Hinge axis maximum height | 3344 mm |
8. Radius at maximum lifting and unloading | 933 mm | 8. Radius at maximum lifting and unloading | 889 mm |
1. Length with bucket on ground level | 7034.8 mm | 1. Length with bucket on ground level | 5531 mm |
2. Between tyres width | 2605 mm | 2. Between tyres width | 1978 mm |
3. Height to cab upper part | 3200.4 mm | 3. Height to cab upper part | 2785 mm |
Shovel
7. Unloading ground clearance at maximum lifting | 2970 mm | 7. Unloading ground clearance at maximum lifting | 2659 mm |