vs.

      Caterpillar 639D vs. Caterpillar 623B

      8 reasons to buy Caterpillar 639D:

      Tractor engine

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

      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

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

      Tractor engine

      Manufacturer Caterpillar and Caterpillar
      Model 3408 and 3406

      Sizes

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

      Operation

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

      Gear box

      Forward gears number 8 and 8

      Cup

      Nominal payload 34000 kg and 22680 kg

      Images

      Sizes

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