vs.

      Caterpillar 904B vs. Case 721E

      4 reasons to buy Caterpillar 904B:

      Operation

      Generator current strength 75 amperes and 65 amperes 13 % more or 10 amperes
      Turn radius 1330 mm and 5750 mm 77 % less or 4420 mm

      Hydraulic system

      Lowering time 3.2 sec and 3.3 sec 3 % less or 0.1 sec
      Lifting time 4.5 sec and 5.6 sec 20 % less or 1.1 sec

      16 reasons to buy Case 721E:

      Sizes

      Radius at maximum lifting and unloading 1172 mm and 658 mm 44 % more or 514 mm
      Clearance 365 mm and 245 mm 33 % more or 120 mm

      Shovel

      Unloading ground clearance at maximum lifting 2889 mm and 2390 mm 17 % more or 499 mm

      Operation

      Cooling system fluid volume 36.9 l. and 8 l. 78 % more or 28.9 l.
      Transmission fluid volume 25.6 l. and 7.5 l. 71 % more or 18.1 l.
      Static tipping weight 12526 kg and 2980 kg 76 % more or 9546 kg
      Fuel Capacity 246 l. and 83 l. 66 % more or 163 l.
      Hydraulic system fluid volume 193.1 l. and 43 l. 78 % more or 150.1 l.
      Engine oil volume 14.2 l. and 7.5 l. 47 % more or 6.7 l.

      Motor

      Effective power 128 kW and 41.8 kW 67 % more or 86.2 kW
      Full power 136 kW and 39.5 kW 71 % more or 96.5 kW

      Hydraulic system

      Pump bandwidth 119.6 l/min and 83 l/min 31 % more or 36.6 l/min

      Gear box

      Forward gears number 4 and 2 50 % more or 2
      Reverse gears number 3 and 2 33 % more or 1
      Maximum forward speed 38 km/h and 20 km/h 47 % more or 18 km/h
      Maximum reverse gear 25.7 km/h and 20 km/h 22 % more or 5.7 km/h

      Neutral reasons:

      Sizes

      Between tyres width 1780 mm and 2562 mm
      Height to cab upper part 2390 mm and 3404 mm
      Length with bucket on ground level 5300 mm and 7710 mm
      Wheelbase 658 mm and 3253 mm
      Hinge axis maximum height 3120 mm and 3979 mm

      Shovel

      Shovel width 1780 mm and 2700 mm

      Operation

      Operating voltage 12 V and 24 V
      Rear axle oscillating 37 degrees and 24 degrees
      Tyre size 12.5-18 and 20.5 R25
      Working weight 4450 kg and 13900 kg

      Motor

      Aspiration turbocharging and Turbocharging with subsequent air cooling (by a cooling radiator)
      Model S4Q2 turbocharging and Family IV 667TA/EED, 3 level

      Hydraulic system

      Overflow valve pressure 20700 kPa and 24821 kPa

      Gear box

      Transmission type Hydrostatic single-path and 4F / 3R (4 forward / 3 reverse speeds) proportional with electronic control module, with torque measurement, automatic / manual shifting and modulating

      Images

      Sizes

      2. Between tyres width 1780 mm 2. Between tyres width 2562 mm
      3. Height to cab upper part 2390 mm 3. Height to cab upper part 3404 mm
      4. Wheelbase 658 mm 4. Wheelbase 3253 mm
      5. Clearance 245 mm 5. Clearance 365 mm
      6. Hinge axis maximum height 3120 mm 6. Hinge axis maximum height 3979 mm
      8. Radius at maximum lifting and unloading 658 mm 8. Radius at maximum lifting and unloading 1172 mm
      1. Length with bucket on ground level 5300 mm 1. Length with bucket on ground level 7710 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2390 mm 7. Unloading ground clearance at maximum lifting 2889 mm