vs.

      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