vs.

      Caterpillar 621F 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 814 l. 42 % more or 589 l.

      Cup

      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
      Cut width 3490 mm and 3020 mm 13 % more or 470 mm

      Neutral reasons:

      Weight

      Total operating unloaded 32090 kg and 48160 kg

      Tractor engine

      Model 3406CTA and 3408

      Sizes

      Headroom 3710 mm and 4170 mm
      Dimensional length 12930 mm and 14800 mm
      Wheelbase 7720 mm and 8740 mm
      Overall width 3470 mm and 3960 mm

      Gear box

      Maximum forward speed 51 km/h and 51 km/h

      Cup

      Nominal payload 21770 kg and 34000 kg

      Images

      Sizes

      1. Dimensional length 12930 mm 1. Dimensional length 14800 mm
      2. Overall width 3470 mm 2. Overall width 3960 mm
      3. Headroom 3710 mm 3. Headroom 4170 mm
      4. Wheelbase 7720 mm 4. Wheelbase 8740 mm