Hydraulic Tunnelling Drilling Rig
KJ421 Hydraulic Tunnelling Drilling Rig(Secondary
Dimensions (L*W*H mm)
13000×2200×2400/3100
Weight（kg）
22000
Φ Aperture(mm)
42-102
Power（Kw）
21/22
Gas Production(m3/min)
2*0.3
Gradability(°）
14
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Technical Parameters
KJ421 Hydraulic Tunnelling Drilling Rig(Secondary

Drill the blast hole and rock bolting in a vertical,inclined and horizontal way;Suitably qualified for the drilling of tunnels whose section falls in the range of 16-68m².

  • The firm flexible boom is capable of optical coverage of the section;
  • 360º rotation and self-leveling beam make drill positioning easy;
  • The boom can also be used for the drilling of lateral cross-cut and rock bolting;
  • The drill rig provides a good view for the operator;
  • Balanced layout and the articulated chassis of four-wheel drive ensure the flexible,fastand safe driving in the narrow tunnel;
  • The stepped piston is used for the high-frequency impacting rock drill and this can improve the transmission efficiency of impact wave and drilling speed and reduce the consumption of drilling tools and make it in good condition;
  • Considerable space and automatic functions enable the driver to concentrate on drilling in a safe,fast and accurate manner;
  • All the relevant parts are kept in good protection,meanwhile easy to maintain.
  • It can be equipped with an enclosed cab selectively.
Technical Parameters
* Note: Due to continuous technological updates and advancements, any differences between technical parameters and configurations and the actual product shall be based on the actual product delivered; Additionally, the machine shown in the picture may include additional equipment.
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