vs.

      Caterpillar 621E vs. Caterpillar 637D

      6 reasons to buy Caterpillar 637D:

      Tractor engine

      Displacement 18 l. and 14.6 l. 19 % more or 3.4 l.

      Operation

      Fuel Capacity 1403 l. and 545 l. 61 % more or 858 l.

      Cup

      Cut width 3490 mm and 3020 mm 13 % more or 470 mm
      Volume with top 23.7 m3 and 15.3 m3 35 % more or 8.4 m3
      Brimmed volume 16.1 m3 and 10.7 m3 34 % more or 5.4 m3
      Maximum cutting depth 483 mm and 333 mm 31 % more or 150 mm

      Neutral reasons:

      Weight

      Total operating unloaded 30476 kg and 48160 kg
      Front axle unloaded 20723 kg and 29378 kg
      Rear axle unloaded 9753 kg and 18782 kg
      Total operating loaded 52249 kg and 82160 kg
      Loaded front axle 27692 kg and 41080 kg
      Loaded rear axle 24557 kg and 41080 kg

      Tractor engine

      Manufacturer Caterpillar and Caterpillar
      Model 3406 and 3408

      Sizes

      Dimensional length 12930 mm and 14800 mm
      Overall width 3470 mm and 3960 mm
      Wheelbase 7720 mm and 8740 mm

      Operation

      Tyre size 33.25-29 26 PR (E-3) and 33.25-35 38PR (E-3)

      Gear box

      Forward gears number 8 and 8
      Maximum forward speed 51 km/h and 51 km/h

      Cup

      Nominal payload 21770 kg and 34000 kg

      Images

      Sizes

      4. Wheelbase 7720 mm 4. Wheelbase 8740 mm
      1. Dimensional length 12930 mm 1. Dimensional length 14800 mm
      2. Overall width 3470 mm 2. Overall width 3960 mm