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- Komatsu D21A-8 vs. Komatsu D51PX-22
Komatsu D21A-8 vs. Komatsu D51PX-22
2 reasons to buy Komatsu D21A-8:
Operation
Final drive fluid volume | 6 l. and 4 l. | 33 % more or 2 l. |
Carrier
Specific ground pressure | 32.9 kPa and 33.4 kPa | 1 % less or 0.5 kPa |
17 reasons to buy Komatsu D51PX-22:
Standard blade
Blade angle in both directions | 28.5 degrees and 25 degrees | 12 % more or 3.5 degrees |
Cut depth | 456 mm and 355 mm | 22 % more or 101 mm |
Operation
Hydraulic system fluid volume | 63 l. and 21 l. | 67 % more or 42 l. |
Fuel Capacity | 270 l. and 60 l. | 78 % more or 210 l. |
Cooling system fluid volume | 35 l. and 10 l. | 71 % more or 25 l. |
Engine oil volume | 20 l. and 6.6 l. | 67 % more or 13.4 l. |
Motor
Effective power | 97 kW and 29.5 kW | 70 % more or 67.5 kW |
Displacement | 6.7 l. and 3.1 l. | 54 % more or 3.6 l. |
Cylinders number | 6 and 4 | 33 % more or 2 |
Full power | 99 kW and 32.2 kW | 67 % more or 66.8 kW |
Gear box
Forward gears number | 3 and 2 | 33 % more or 1 |
Reverse gears number | 3 and 2 | 33 % more or 1 |
Maximum forward speed | 9 km/h and 4.4 km/h | 51 % more or 4.6 km/h |
Maximum reverse gear | 9 km/h and 5.6 km/h | 38 % more or 3.4 km/h |
Carrier
Contact with ground area | 3.9 m2 and 1 m2 | 74 % more or 2.9 m2 |
Track shoes number per side | 44 and 37 | 16 % more or 7 |
Rolling bearings number on either side | 7 and 5 | 29 % more or 2 |
Neutral reasons:
Standard blade
Width | 2170 mm and 3350 mm |
Height | 820 mm and 1110 mm |
Sizes
Length with blade | 3365 mm and 4800 mm |
Width between caterpillar tracks | 1310 mm and 2590 mm |
Height to cab upper part | 2450 mm and 3002 mm |
Operation
Working weight | 3940 kg and 13100 kg |
Motor
Aspiration | natural aspiration and Turbocharged engine with subsequent cooling of charging air by oncoming air flow |
Manufacturer | Komatsu and Komatsu |
Model | 4D94LE-2 and SAA6D107E-1 |
Gear box
Transmission type | Komatsu transmission Hydro-Gear switching and dual path hydrostatic transmission |
Carrier
Standard shoe size | 300 mm and 710 mm |
Images
Sizes
3. Height to cab upper part | 2450 mm | 3. Height to cab upper part | 3002 mm |
1. Length with blade | 3365 mm | 1. Length with blade | 4800 mm |
2. Width between caterpillar tracks | 1310 mm | 2. Width between caterpillar tracks | 2590 mm |
Carrier
8. Standard shoe size | 300 mm | 8. Standard shoe size | 710 mm |