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- John Deere 644H MH vs. Komatsu WA85-3
John Deere 644H MH vs. Komatsu WA85-3
17 reasons to buy John Deere 644H MH:
Sizes
Radius at maximum lifting and unloading | 1055 mm and 865 mm | 18 % more or 190 mm |
Shovel
Unloading ground clearance at maximum lifting | 2962 mm and 2585 mm | 13 % more or 377 mm |
Operation
Fuel Capacity | 341 l. and 90 l. | 74 % more or 251 l. |
Hydraulic system fluid volume | 117 l. and 95 l. | 19 % more or 22 l. |
Engine oil volume | 25 l. and 9.4 l. | 62 % more or 15.6 l. |
Cooling system fluid volume | 29 l. and 12.3 l. | 58 % more or 16.7 l. |
Front axle / differential fluid volume | 27 l. and 6.1 l. | 77 % more or 20.9 l. |
Rear axle / differential fluid volume | 27 l. and 6.5 l. | 76 % more or 20.5 l. |
Static tipping weight | 14019 kg and 4030 kg | 71 % more or 9989 kg |
Motor
Full power | 158 kW and 48.5 kW | 69 % more or 109.5 kW |
Cylinders number | 6 and 4 | 33 % more or 2 |
Displacement | 8.1 l. and 3.3 l. | 59 % more or 4.8 l. |
Maximum torque | 1010.1 Nm and 240 Nm | 76 % more or 770.1 Nm |
Hydraulic system
Pump bandwidth | 280 l/min and 64.1 l/min | 77 % more or 215.9 l/min |
Gear box
Forward gears number | 4 and 2 | 50 % more or 2 |
Reverse gears number | 3 and 2 | 33 % more or 1 |
Maximum forward speed | 39 km/h and 5.7 km/h | 85 % more or 33.3 km/h |
9 reasons to buy Komatsu WA85-3:
Sizes
Clearance | 480 mm and 473 mm | 1 % more or 7 mm |
Shovel
Breakout power | 48.6 kN and 152.8 kN | 68 % less or 104.2 kN |
Operation
Generator current strength | 80 amperes and 55 amperes | 31 % more or 25 amperes |
Turn radius | 3790 mm and 5500 mm | 31 % less or 1710 mm |
Motor
Power measured at | 2500 rev / min and 2200 rev / min | 12 % more or 300 rev |
Torque measured at | 1600 rev / min and 1300 rev / min | 19 % more or 300 rev |
Hydraulic system
Lifting time | 4.9 sec and 6 sec | 18 % less or 1.1 sec |
Unloading time | 1 sec and 1.2 sec | 17 % less or 0.2 sec |
Lowering time | 2.6 sec and 3 sec | 13 % less or 0.4 sec |
Neutral reasons:
Sizes
Length with bucket on ground level | 7815 mm and 5410 mm |
Height to cab upper part | 3412 mm and 2670 mm |
Wheelbase | 3200 mm and 2000 mm |
Hinge axis maximum height | 4156 mm and 3225 mm |
Shovel
Shovel width | 3040 mm and 2050 mm |
Operation
Tyre size | 23.5-25 and 405/70 R20 SPT 9 |
Rear axle oscillating | 26 degrees and 24 degrees |
Working weight | 17657 kg and 5000 kg |
Operating voltage | 24 V and 12 V |
Motor
Manufacturer | John Deere and Komatsu |
Model | 6081H and 4D98E |
Hydraulic system
Type of pump | piston pump and Closed Hydraulic Circuit |
Overflow valve pressure | 24850 kPa and 20500 kPa |
Gear box
Transmission type | powershift and Hydro-Static Transmission |
Images
Sizes
1. Length with bucket on ground level | 7815 mm | 1. Length with bucket on ground level | 5410 mm |
3. Height to cab upper part | 3412 mm | 3. Height to cab upper part | 2670 mm |
4. Wheelbase | 3200 mm | 4. Wheelbase | 2000 mm |
5. Clearance | 473 mm | 5. Clearance | 480 mm |
6. Hinge axis maximum height | 4156 mm | 6. Hinge axis maximum height | 3225 mm |
8. Radius at maximum lifting and unloading | 1055 mm | 8. Radius at maximum lifting and unloading | 865 mm |
Shovel
7. Unloading ground clearance at maximum lifting | 2962 mm | 7. Unloading ground clearance at maximum lifting | 2585 mm |