KJ321-CYTJ45/2 Hydraulic Tunneling Drilling Rig

Model: KJ321-CYTJ45/2

Climbing capacity: ≤14°

Operating range: 3×4-7.3×6.5 m²

   4×4-8.7×7.8 m²

   4×4-11.5×9.2 m²

Product Applications Product Features Technical Parameters Related Products


The KJ321-CYTJ45/2 hydraulic tunneling drilling rig is suitably qualified for the drilling of tunnels whose section falls in the range of 12-45 square meters, capable of drilling the blast hole and rock bolting in a vertical, inclined and horizontal way.


  • The drilling rig is fitted with the flexible boom in two symmetric rectangular coordinates, without any operation blind spot. 360°rotation and self-leveling beam make drill positioning easy; it can also be used for the drilling of lateral cross-cut and rock bolting.
  • The drilling rig provides a good view for the operator; balanced layout and the articulated chassis of four-wheel drive ensure the flexible, fast and 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 maintenance easily.

Technical Parameters

Technical Parameters
Dimensions and weight Air & water system
Length 12000mm Air compressor 1×JN11 Oil consumption of lubrication 2×180-250 g/h
Width 2160mm Capacity of air compressor 1.55m³/min
Height 2500/3300mm Pressure 8 bar Water pump 1×CRI10-22
Weight Appr.22000kg Device of shank lubrication Electronic pulse lubrication pump Power 7.5 KW
Tramming speed on flat ground 10km/h
Maximum climbing capacity 25%(14°) Air consumption of lubrication 2×0.3m³/min Capacity of water pump 10 m³/h
Safety protection Chassis
Noise level <100dB(A) Diesel engine Cummins QSB3.9-C125
Travelling braking Wet bridge brake
Lifting safety roof FOPS and ROPS certificate Exhaust purification Exhaust catalyst Parking braking Mechanical brake
Drive system Hydraulic torque converter + gearbox Fuel tank 120L
Drilling system Electric hydraulic power unit
Rock drill 2×HC50 2×HC95LM Motor 2×45kW 2×75kW
Impact power 13 KW 24 KW Impact/Feed/Positioning Axial variable displacement piston pump
Impact flow 105L/min 100-120L/min Rotation Gear pump
Impact pressure 130bar 180-200bar Filter fineness 10 μ
Impact Frequency 62Hz 62Hz Hydraulic oil tank 400L
Torque 325Nm 764Nm Hydraulic cooler Water cooler
Beam rotation 360° Working voltage 380V
Feed extension 1600mm Frequency 50Hz
Model of drill boom K26F Starting method Star-triangle
Form of drill boom Self-leveling Cable reel 1×CRC1016
Boom extension 1200mm length of reel cabling 100m
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