- Home/
- Comparison/
- Wheel-Mounted Loader/
- John Deere 644K Z-Bar vs. Case 1221EXR
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 |