YOUR CURRENT LOCATION: Home > Products > Tunneling Jumbo Drilling Rig

HFJ21  Hydraulic Tunneling Jumbo Drilling RigHFJ21  Hydraulic Tunneling Jumbo Drilling RigHFJ21  Hydraulic Tunneling Jumbo Drilling Rig
HFJ21  Hydraulic Tunneling Jumbo Drilling RigHFJ21  Hydraulic Tunneling Jumbo Drilling RigHFJ21  Hydraulic Tunneling Jumbo Drilling Rig

HFJ21 Hydraulic Tunneling Jumbo Drilling Rig

Drilling Diameter: 41-89mm
Drilling Depth: 2.83-4.05m
Engine Power: 60kW
Rotary Torque: 380 N.m

We're here to help:

Easy ways to get the answers you need.


The Main Features:

Applicable for blast hole drilling of underground mining, tunneling and bolting operation.
Function Configuration:
Equipped with environment friendly diesel engine to drive tramming and positioning, electrical motor to drive drilling operation, the dual power configuration allows the rig for fast maneuverability and zero emission with very low noise level of drilling operation. The rig is also equipped with high efficiency hydraulic drifter and heavy duty floating and steady combo boom drilling system, with high accurate automatic horizontal positioning and 360 rotating function, which allows the rig to finish 35 m2 face drilling coverage in one operation and also can be used for bolting and many other applications.
With high pressure and closed cycle hydraulic system to drive four wheels, for two speed transmission while moving forward and backward. With engine non stop when overloaded and climbing slopes, the rig will automatically adjust to lower speed with higher torque output. The two loop circuitry pedal braking system plus emergency braking device can ensure tramming safety. With only width of 1.65 m of ultra-narrow articulated heavy duty chassis design, the minimum turning radius is 2.8m with 14 degree climbility and tramming speed up to 12 km/h and the rig aims to drill blast holes in underground mines and tunneling excavation as well as bolting operation with professional narrow design in mind.
Control System:
With automatic hole collaring and percussion shutdown function after the drilling procedure completed plus 3 seconds delay to flush the hole bottom, the rig returns automatically to start mode. With AUTO shutdown protection function of the drifter and the rock drill tools, the rig will lubricate the drifter when rock drilling idle and when water flushing on. Advanced combo automatic anti-jamming system can adjust the rotation, feed and percussion pressure automatically according to the rock condition to ensure rock drilling operation always in optimum mode.
Intelligent Technology:
With CAN technology, modular layout of all electric system, and simplified circuitry increase reliability. The display panel in the canopy shows all drilling parameters and running state of the rig with automatic alarms and warnings, and data storage, to allow one man operation easy and trouble shootings simplified.

Product Features:
1. Feed: Heavy duty aluminum alloy feed beam with high anti-bending and torsion-resistant features and high corrosion proof assures long beam service life. The beam surface also is wrapped with stainless steel sheet and PTFE anti-wear lining applied between moving parts to further increase service life of the feed system.
2. Rock Drill: HF104M drifter with dual-damping system ensures best rock drilling tools service life. Pressurized oil film protects and lubricates all moving parts surface, decreasing interior wear of the drifter.
3. Safety Canopy: FOPS design for falling objects protection with lifting feature.
4. Large-capacity Cable Reel: Larger-capacity cable reel for 70 m travel without cable disassemble.
5. Positioning legs: Four heavy duty telescopic hydraulic legs for precise positioning and stability during drilling operation.
6. Console: Highly integrated System and one place layout design for easier, simpler and more convenient operation.
7. Braking system: Designed and developed specially for underground work environment - the dual braking system, besides front and rear axle wheel wet brakes, with front axle spindle wet brakes and rear axle closed hydraulic parking brakes and emergency shutdown brake added.

  • HFG-21J  Hydraulic Tunneling Jumbo Drilling Rig
  • HFG-21J  Hydraulic Tunneling Jumbo Drilling Rig
  • HFG-21J  Hydraulic Tunneling Jumbo Drilling Rig

Technical Data

HFJ21 Technical Specifications

Hole range

41-89 mm

Rod size

(R32, R38,T38) 3090 mm/3700 mm/4310 mm

Drilling depth

2830 mm/3440 mm/4050 mm

Maximum working area

35 m²




Hydraulic System Pressure

230 bar

Percussion Power

20 kw

Rotation Speed

0-388 rpm

Maximum Torque

752 N.m


170 kg

Percussion Frequency

60 Hz





8 bar

Capacity F.A.D

0.3 m³/min

Electric Motor




50 Hz


55 kw


380 V


1475 r/min



Feed Mechanism

Total Length

4890 mm/5500 mm/6110 mm

Compensated Feeding length

1600 mm

Feeding length

2830 mm/3440 mm/4050 mm

Maximum Lifting Force

15 kn/19 kn


Parallel holding


Feed Swing Angle


Boom Extension

1200 mm

Feed Pitch Angle


Boom Swing Angle


Feed Angle


Boom Lifting Angle


Feed roll-over



Articulated Steering Angle


Approach and Departure Angles


Hydraulic Support Legs


Fuel Tank Capacity

63 L




2200 r/min


60 kw/(at 2200rpm)


380 N.m/(at 1500rpm)

Tramming Speed

12/4.5 km/h

Rear Axle Swing Angle


Maximum Traction Force

32 kn

Ground Clearance

260 mm

Climbing Angle




Electric System

Start Type

Star / delta unloading start

Working Lights

2x40 W,24 V


380 V

Tramming Lights

8x70 W,24 V


2x12 V,105 Ah

Cable Reel, Diameter

1100 mm

Water Flushing System


66 L/min

Minimum Water Inlet Pressure

2 bar


12 bar



Weight and Dimensions



Tramming Turning Radius

Inner R 2800 mm,Outer R 4900 mm

Dimensions ( L x W x H)

10920mmx1650 mmx2100 mm/2800 mm

Working Coverage Area : Width x Height

6600 mmx5670 mm(5600 mmx5390 mm)


get in touch

If you have any questions, please fill in the following information and we will respond to you in time.

  • *
  • *
 Products  Inquiry  Email  WhatApp
Contact us now