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- Caterpillar D7R XR serie II vs. Komatsu D31PX-22
Caterpillar D7R XR serie II vs. Komatsu D31PX-22
18 reasons to buy Caterpillar D7R XR serie II:
Standard blade
Volume | 6.9 m3 and 1.6 m3 | 77 % more or 5.3 m3 |
Cut depth | 527 mm and 390 mm | 26 % more or 137 mm |
Sizes
Clearance | 416 mm and 315 mm | 24 % more or 101 mm |
Operation
Fuel Capacity | 479 l. and 195 l. | 59 % more or 284 l. |
Cooling system fluid volume | 77.4 l. and 18 l. | 77 % more or 59.4 l. |
Engine oil volume | 31 l. and 11 l. | 65 % more or 20 l. |
Final drive fluid volume | 13 l. and 3.5 l. | 73 % more or 9.5 l. |
Generator current strength | 95 amperes and 35 amperes | 63 % more or 60 amperes |
Motor
Displacement | 10.3 l. and 3.3 l. | 68 % more or 7.0 l. |
Cylinders number | 6 and 4 | 33 % more or 2 |
Full power | 192 kW and 59.7 kW | 69 % more or 132.3 kW |
Effective power | 179 kW and 58.2 kW | 67 % more or 120.8 kW |
Hydraulic system
Pump bandwidth | 180 l/min and 99.2 l/min | 45 % more or 80.8 l/min |
Gear box
Maximum forward speed | 10.5 km/h and 8.5 km/h | 19 % more or 2.0 km/h |
Maximum reverse gear | 13.6 km/h and 8.5 km/h | 37 % more or 5.1 km/h |
Carrier
Contact with ground area | 3.7 m2 and 2.6 m2 | 30 % more or 1.1 m2 |
Track shoes number per side | 41 and 40 | 2 % more or 1 |
Rolling bearings number on either side | 8 and 6 | 25 % more or 2 |
2 reasons to buy Komatsu D31PX-22:
Motor
Power measured at | 2200 rev / min and 2100 rev / min | 5 % more or 100 rev |
Carrier
Specific ground pressure | 32.3 kPa and 67.6 kPa | 52 % less or 35.3 kPa |
Neutral reasons:
Standard blade
Width | 3693 mm and 3250 mm |
Height | 1524 mm and 750 mm |
Sizes
Caterpillar track length on ground level | 3050 mm and 2185 mm |
Length with blade | 6030 mm and 4155 mm |
Width between caterpillar tracks | 2590 mm and 2250 mm |
Height to cab upper part | 3372 mm and 2760 mm |
Operation
Working weight | 25880 kg and 8540 kg |
Operating voltage | 24 V and 24 V |
Motor
Manufacturer | Caterpillar and Komatsu |
Model | 3176C and SAA4D95LE-5 |
Gear box
Transmission type | Hydro-Static Transmission and dual path hydrostatic transmission |
Forward gears number | 3 and 3 |
Reverse gears number | 3 and 3 |
Carrier
Standard shoe size | 610 mm and 600 mm |
Track width | 1980 mm and 1650 mm |
Images
Sizes
1. Length with blade | 6030 mm | 1. Length with blade | 4155 mm |
2. Width between caterpillar tracks | 2590 mm | 2. Width between caterpillar tracks | 2250 mm |
3. Height to cab upper part | 3372 mm | 3. Height to cab upper part | 2760 mm |
4. Caterpillar track length on ground level | 3050 mm | 4. Caterpillar track length on ground level | 2185 mm |
5. Clearance | 416 mm | 5. Clearance | 315 mm |
Carrier
7. Track width | 1980 mm | 7. Track width | 1650 mm |
8. Standard shoe size | 610 mm | 8. Standard shoe size | 600 mm |


