vs.

      Caterpillar D7R serie II vs. Komatsu D21A-5

      14 reasons to buy Caterpillar D7R serie II:

      Standard blade

      Cut depth 527 mm and 350 mm 34 % more or 177 mm

      Sizes

      Clearance 416 mm and 310 mm 25 % more or 106 mm

      Operation

      Fuel Capacity 479 l. and 60 l. 87 % more or 419 l.
      Cooling system fluid volume 77.4 l. and 13 l. 83 % more or 64.4 l.

      Motor

      Full power 192 kW and 29.1 kW 85 % more or 162.9 kW
      Displacement 10.3 l. and 2.9 l. 72 % more or 7.4 l.
      Cylinders number 6 and 4 33 % more or 2

      Hydraulic system

      Pump bandwidth 180 l/min and 53 l/min 71 % more or 127 l/min

      Gear box

      Maximum forward speed 10.5 km/h and 4.4 km/h 58 % more or 6.1 km/h
      Maximum reverse gear 13.6 km/h and 5.4 km/h 60 % more or 8.2 km/h
      Forward gears number 3 and 2 33 % more or 1
      Reverse gears number 3 and 2 33 % more or 1

      Carrier

      Rolling bearings number on either side 7 and 5 29 % more or 2
      Track shoes number per side 40 and 37 7 % more or 3

      2 reasons to buy Komatsu D21A-5:

      Motor

      Power measured at 2450 rev / min and 2100 rev / min 14 % more or 350 rev

      Carrier

      Specific ground pressure 29.4 kPa and 75 kPa 61 % less or 45.6 kPa

      Neutral reasons:

      Standard blade

      Width 3693 mm and 2170 mm
      Height 1524 mm and 590 mm

      Sizes

      Length with blade 5690 mm and 3385 mm
      Width between caterpillar tracks 2540 mm and 1610 mm
      Height to cab upper part 3372 mm and 2160 mm
      Caterpillar track length on ground level 2878 mm and 1685 mm
      Length without blade 4736 mm and 2440 mm

      Operation

      Working weight 25304 kg and 3620 kg

      Motor

      Manufacturer Caterpillar and Komatsu
      Model 3176C and 4D92-2P

      Hydraulic system

      Overflow valve pressure 22800 kPa and 15200.3 kPa

      Gear box

      Transmission type Hydro-Static Transmission and HS

      Carrier

      Caterpillar track pitch 216 mm and 135 mm
      Track width 1980 mm and 1310 mm
      Standard shoe size 560 mm and 300 mm

      Images

      Sizes

      5. Clearance 416 mm 5. Clearance 310 mm
      6. Length without blade 4736 mm 6. Length without blade 2440 mm
      1. Length with blade 5690 mm 1. Length with blade 3385 mm
      2. Width between caterpillar tracks 2540 mm 2. Width between caterpillar tracks 1610 mm
      3. Height to cab upper part 3372 mm 3. Height to cab upper part 2160 mm
      4. Caterpillar track length on ground level 2878 mm 4. Caterpillar track length on ground level 1685 mm

      Carrier

      7. Track width 1980 mm 7. Track width 1310 mm
      8. Standard shoe size 560 mm 8. Standard shoe size 300 mm