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- Hitachi EX12-2 vs. Komatsu PC20R-8
Hitachi EX12-2 vs. Komatsu PC20R-8
4 reasons to buy Hitachi EX12-2:
Operation
Hydraulic system fluid volume | 30 l. and 29 l. | 3 % more or 1 l. |
Engine oil volume | 4.5 l. and 3.6 l. | 20 % more or 0.9 l. |
Hydraulic system overflow valve pressure | 21084.3 kPa and 21000 kPa | 0 % more or 84.3 kPa |
Hydraulic pump flow rate | 30.4 l/min and 59.6 l/min | 49 % less or 29.2 l/min |
17 reasons to buy Komatsu PC20R-8:
Swing device
Rotation speed | 9 rev / min and 8.5 rev / min | 6 % more or 0.5 rev |
Sizes
Width to outside of caterpillar track | 1370 mm and 960 mm | 30 % more or 410 mm |
Counterweight ground clearance | 545 mm and 445 mm | 18 % more or 100 mm |
Operation
Fuel Capacity | 35 l. and 20 l. | 43 % more or 15 l. |
Cooling system fluid volume | 4 l. and 3.5 l. | 12 % more or 0.5 l. |
Generator current strength | 40 amperes and 36 amperes | 10 % more or 4 amperes |
Motor
Effective power | 17.4 kW and 12.2 kW | 30 % more or 5.2 kW |
Power measured at | 2600 rev / min and 2000 rev / min | 23 % more or 600 rev |
Displacement | 1.2 l. and 1.1 l. | 8 % more or 0.1 l. |
Torque measured at | 1600 rev / min and 1500 rev / min | 6 % more or 100 rev |
Maximum torque | 72.5 Nm and 63.7 Nm | 12 % more or 8.8 Nm |
Carrier
Specific ground pressure | 1.6 lb / sq. inch and 3.8 lb / sq. inch | 58 % less or 2.2 lb |
Maximum travel speed | 4.3 km/h and 2.2 km/h | 49 % more or 2.1 km/h |
Booms/sections features 1
Maximum excavation depth | 2350 mm and 1900 mm | 19 % more or 450 mm |
Maximum radius along ground level | 4250 mm and 3430 mm | 19 % more or 820 mm |
Maximum loading height | 2765 mm and 2190 mm | 21 % more or 575 mm |
Maximum vertical wall digging depth | 1900 mm and 1360 mm | 28 % more or 540 mm |
Neutral reasons:
Sizes
Height to cab upper part | 2280 mm and 2450 mm |
Rear platform swing radius | 1060 mm and 1240 mm |
Caterpillar track length on ground level | 1025 mm and 1340 mm |
Operation
Working weight | 1350 kg and 2535 kg |
Operating voltage | 12 V and 12 V |
Motor
Manufacturer | Kubota and Komatsu |
Aspiration | natural aspiration and natural aspiration |
Model | D1105-KA and 3D78AE-3FA |
Cylinders number | 3 and 3 |
Carrier
Shoe dimensions | 230 mm and 250 mm |
Rolling bearings number on either side | 3 and 3 |
Track width | 1025 mm and 1120 mm |
Booms/sections features 1
Unit load-transfer height | 2280 mm and 2450 mm |
Unit load-transfer length | 3520 mm and 4250 mm |
Maximum cut height | 3120 mm and 4030 mm |
Images
Sizes
2. Width to outside of caterpillar track | 960 mm | 2. Width to outside of caterpillar track | 1370 mm |
4. Caterpillar track length on ground level | 1025 mm | 4. Caterpillar track length on ground level | 1340 mm |
7. Height to cab upper part | 2280 mm | 7. Height to cab upper part | 2450 mm |
8. Rear platform swing radius | 1060 mm | 8. Rear platform swing radius | 1240 mm |
15. Counterweight ground clearance | 445 mm | 15. Counterweight ground clearance | 545 mm |
Carrier
6. Track width | 1025 mm | 6. Track width | 1120 mm |
14. Shoe dimensions | 230 mm | 14. Shoe dimensions | 250 mm |
Booms/sections features 1
1. Unit load-transfer length | 3520 mm | 1. Unit load-transfer length | 4320 mm |
3. Unit load-transfer height | 2280 mm | 3. Unit load-transfer height | 2450 mm |
9. Maximum cut height | 3120 mm | 9. Maximum cut height | 4205 mm |
10. Maximum loading height | 2190 mm | 10. Maximum loading height | 2945 mm |
11. Maximum radius along ground level | 3430 mm | 11. Maximum radius along ground level | 4510 mm |
12. Maximum vertical wall digging depth | 1360 mm | 12. Maximum vertical wall digging depth | 2190 mm |
13. Maximum excavation depth | 1900 mm | 13. Maximum excavation depth | 2550 mm |