vs.

      Caterpillar 312D vs. Jonyang JY640

      4 reasons to buy Caterpillar 312D:

      Swing device

      Rotation speed 12.4 rev / min and 9 rev / min 27 % more or 3.4 rev

      Operation

      Hydraulic system overflow valve pressure 35000 kPa and 34300 kPa 2 % more or 700 kPa
      Hydraulic pump flow rate 127 l/min and 720 l/min 82 % less or 593 l/min

      Carrier

      Specific ground pressure 41.9 kPa and 77 kPa 46 % less or 35.1 kPa

      8 reasons to buy Jonyang JY640:

      Sizes

      Width to outside of caterpillar track 3350 mm and 2490 mm 26 % more or 860 mm
      Clearance 496 mm and 430 mm 13 % more or 66 mm
      Counterweight ground clearance 1296 mm and 915 mm 29 % more or 381 mm

      Motor

      Effective power 235 kW and 67.1 kW 71 % more or 167.9 kW

      Carrier

      Maximum travel speed 6.4 km/h and 5.5 km/h 14 % more or 0.9 km/h

      Booms/sections features 1

      Maximum radius along ground level 12090 mm and 8170 mm 32 % more or 3920 mm
      Maximum loading height 8729 mm and 6100 mm 30 % more or 2629 mm
      Maximum excavation depth 7745 mm and 5540 mm 28 % more or 2205 mm

      Neutral reasons:

      Sizes

      Rear platform swing radius 2140 mm and 3666 mm
      Caterpillar track length on ground level 2780 mm and 4236 mm
      Height to cab upper part 2760 mm and 3068 mm

      Operation

      Working weight 28483.7 pound and 80000 pound

      Motor

      Manufacturer Caterpillar and Cummins
      Model C4.2 ACERT and M11-C315

      Carrier

      Shoe dimensions 500 mm and 600 mm
      Track width 1990 mm and 2750 mm

      Booms/sections features 1

      Maximum cut height 8480 mm and 12196 mm
      Unit load-transfer height 2830 mm and 3609 mm
      Unit load-transfer length 7610 mm and 12031 mm

      Images

      Sizes

      2. Width to outside of caterpillar track 2490 mm 2. Width to outside of caterpillar track 3350 mm
      4. Caterpillar track length on ground level 2780 mm 4. Caterpillar track length on ground level 4236 mm
      5. Clearance 430 mm 5. Clearance 496 mm
      7. Height to cab upper part 2760 mm 7. Height to cab upper part 3068 mm
      8. Rear platform swing radius 2140 mm 8. Rear platform swing radius 3666 mm
      15. Counterweight ground clearance 915 mm 15. Counterweight ground clearance 1296 mm

      Carrier

      6. Track width 1990 mm 6. Track width 2750 mm
      14. Shoe dimensions 500 mm 14. Shoe dimensions 600 mm

      Booms/sections features 1

      1. Unit load-transfer length 7610 mm 1. Unit load-transfer length 12031 mm
      3. Unit load-transfer height 2830 mm 3. Unit load-transfer height 3609 mm
      9. Maximum cut height 8700 mm 9. Maximum cut height 12196 mm
      10. Maximum loading height 6340 mm 10. Maximum loading height 8729 mm
      11. Maximum radius along ground level 8620 mm 11. Maximum radius along ground level 12090 mm
      13. Maximum excavation depth 6040 mm 13. Maximum excavation depth 7745 mm