vs.

      Komatsu D31EX-22 vs. Komatsu D21A-3

      10 reasons to buy Komatsu D31EX-22:

      Standard blade

      Cut depth 390 mm and 320 mm 18 % more or 70 mm

      Sizes

      Clearance 315 mm and 310 mm 2 % more or 5 mm

      Operation

      Fuel Capacity 195 l. and 60 l. 69 % more or 135 l.
      Cooling system fluid volume 18 l. and 14 l. 22 % more or 4 l.

      Motor

      Full power 59.7 kW and 27.6 kW 54 % more or 32.1 kW
      Displacement 3.3 l. and 2.6 l. 21 % more or 0.7 l.

      Gear box

      Maximum forward speed 8.5 km/h and 6.9 km/h 19 % more or 1.6 km/h
      Maximum reverse gear 8.5 km/h and 6.4 km/h 25 % more or 2.1 km/h

      Carrier

      Track shoes number per side 40 and 37 7 % more or 3
      Rolling bearings number on either side 6 and 5 17 % more or 1

      2 reasons to buy Komatsu D21A-3:

      Motor

      Power measured at 2450 rev / min and 2200 rev / min 10 % more or 250 rev

      Carrier

      Specific ground pressure 28.4 kPa and 46.1 kPa 38 % less or 17.7 kPa

      Neutral reasons:

      Standard blade

      Width 2550 mm and 2300 mm
      Height 840 mm and 565 mm

      Sizes

      Width between caterpillar tracks 1910 mm and 1540 mm
      Height to cab upper part 2760 mm and 2085 mm
      Caterpillar track length on ground level 2185 mm and 1675 mm
      Length with blade 4175 mm and 3450 mm

      Operation

      Working weight 8190 kg and 3430 kg

      Motor

      Manufacturer Komatsu and Komatsu
      Model SAA4D95LE-5 and 4D92-1
      Cylinders number 4 and 4

      Gear box

      Forward gears number 3 and 3
      Reverse gears number 3 and 3
      Transmission type dual path hydrostatic transmission and HS

      Carrier

      Track width 1510 mm and 1190 mm
      Standard shoe size 400 mm and 300 mm

      Images

      Sizes

      1. Length with blade 4175 mm 1. Length with blade 3450 mm
      2. Width between caterpillar tracks 1910 mm 2. Width between caterpillar tracks 1540 mm
      3. Height to cab upper part 2760 mm 3. Height to cab upper part 2085 mm
      4. Caterpillar track length on ground level 2185 mm 4. Caterpillar track length on ground level 1675 mm
      5. Clearance 315 mm 5. Clearance 310 mm

      Carrier

      7. Track width 1510 mm 7. Track width 1190 mm
      8. Standard shoe size 400 mm 8. Standard shoe size 300 mm