vs.

      Caterpillar 639D vs. Caterpillar 623E

      7 reasons to buy Caterpillar 639D:

      Tractor engine

      Full power 336 kW and 272.2 kW 19 % more or 63.8 kW
      Displacement 18 l. and 14.6 l. 19 % more or 3.4 l.

      Operation

      Fuel Capacity 1403 l. and 570 l. 59 % more or 833 l.

      Hoist

      Flights number 20 and 15 25 % more or 5

      Gear box

      Maximum forward speed 53 km/h and 48 km/h 9 % more or 5 km/h

      Cup

      Maximum cutting depth 381 mm and 330 mm 13 % more or 51 mm
      Volume with top 26 m3 and 17.6 m3 32 % more or 8.4 m3

      Neutral reasons:

      Weight

      Front axle unloaded 33158 kg and 21906 kg
      Rear axle unloaded 23042 kg and 11796 kg
      Total operating loaded 90200 kg and 58652 kg
      Loaded front axle 46002 kg and 30499 kg
      Loaded rear axle 44198 kg and 28153 kg
      Total operating unloaded 56200 kg and 33702 kg

      Tractor engine

      Manufacturer Caterpillar and Caterpillar
      Model 3408 and 3406

      Sizes

      Dimensional length 14530 mm and 12610 mm
      Overall width 3960 mm and 3550 mm
      Headroom 4420 mm and 3940 mm
      Wheelbase 8990 mm and 7970 mm

      Operation

      Tyre size 37.25-35 42PR E-3 and 29.5-29 34PR (E-2)

      Gear box

      Forward gears number 8 and 8

      Cup

      Cut width 3500 mm and 3500 mm
      Nominal payload 34000 kg and 24950 kg

      Images

      Sizes

      1. Dimensional length 14530 mm 1. Dimensional length 12610 mm
      2. Overall width 3960 mm 2. Overall width 3550 mm
      3. Headroom 4420 mm 3. Headroom 3940 mm
      4. Wheelbase 8990 mm 4. Wheelbase 7970 mm