vs.

      Caterpillar 623B vs. Caterpillar 639D

      8 reasons to buy Caterpillar 639D:

      Tractor engine

      Displacement 18 l. and 14.6 l. 19 % more or 3.4 l.
      Full power 336 kW and 246 kW 27 % more or 90 kW

      Operation

      Fuel Capacity 1403 l. and 511 l. 64 % more or 892 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

      Volume with top 26 m3 and 16.8 m3 35 % more or 9.2 m3
      Maximum cutting depth 381 mm and 330 mm 13 % more or 51 mm
      Cut width 3500 mm and 3150 mm 10 % more or 350 mm

      Neutral reasons:

      Weight

      Rear axle unloaded 10504 kg and 23042 kg
      Total operating loaded 55505 kg and 90200 kg
      Loaded front axle 29972.7 kg and 46002 kg
      Loaded rear axle 25532.3 kg and 44198 kg
      Total operating unloaded 32825 kg and 56200 kg
      Front axle unloaded 22321 kg and 33158 kg

      Tractor engine

      Manufacturer Caterpillar and Caterpillar
      Model 3406 and 3408

      Sizes

      Dimensional length 12520 mm and 14530 mm
      Overall width 3550 mm and 3960 mm
      Headroom 3810 mm and 4420 mm
      Wheelbase 7970 mm and 8990 mm

      Operation

      Tyre size 29.5-29 28PR (E-2) and 37.25-35 42PR E-3

      Gear box

      Forward gears number 8 and 8

      Cup

      Nominal payload 22680 kg and 34000 kg

      Images

      Sizes

      1. Dimensional length 12520 mm 1. Dimensional length 14530 mm
      2. Overall width 3550 mm 2. Overall width 3960 mm
      3. Headroom 3810 mm 3. Headroom 4420 mm
      4. Wheelbase 7970 mm 4. Wheelbase 8990 mm