Home Toolbuy Products Hfg-21j Crawler Mining or Tunnel Down Hole Drill

Hfg-21j Crawler Mining or Tunnel Down Hole Drill

Hfg-21j Crawler Mining or Tunnel Down Hole Drill
Price: Negotiable/Set
Min Order: 1/Set
Pay Type: L/C,T/T,Western Union,Paypal,Money Gram
HFG-21J Crawler Mining Or Tunnel down hole drill
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 Technical Specifications
Hole range41-89 mmRod size(R32, R38,T38) 3090 mm/3700 mm/4310 mm
Drilling depth2830 mm/3440 mm/4050 mmMaximum working area35 m²
modelHF104MHydraulic System Pressure230 bar
Percussion Power20 kwRotation Speed0-388 rpm
Maximum Torque752 N.mWeight170 kg
Percussion Frequency60 Hz  
Pressure8 barCapacity F.A.D0.3 m³/min
Electric Motor
ModelGN13081501Frequency50 Hz
Power55 kwVotage380 V
RPM1475 r/min  
Feed Mechanism
Total Length4890 mm/5500 mm/6110 mmCompensated Feeding length1600 mm
Feeding length2830 mm/3440 mm/4050 mmMaximum Lifting Force15 kn/19 kn
Parallel holdingCompleteFeed Swing Angle±40°
Boom Extension1200 mmFeed Pitch Angle+25°/-48°
Boom Swing Angle±35°Feed Angle+3°/-90°
Boom Lifting Angle+43°/-20°Feed roll-over360°(Spiral)
Articulated Steering Angle±41°Approach and Departure Angles15°
Hydraulic Support Legs4Fuel Tank Capacity63 L
Model4BTA3.9-C80-(Cummins)RPM2200 r/min
Powe60 kw/(at 2200rpm)Torque380 N.m/(at 1500rpm)
Tramming Speed12/4.5 km/hRear Axle Swing Angle±10°
Maximum Traction Force32 knGround Clearance260 mm
Climbing Angle14°  
Electric System
Start TypeStar / delta unloading startWorking Lights2x40 W,24 V
Voltage380 VTramming Lights8x70 W,24 V
Battery2x12 V,105 AhCable Reel, Diameter1100 mm
Water Flushing System
Flow66 L/minMinimum Water Inlet Pressure2 bar
Pressure12 bar  
Weight and Dimensions
Weight≤121700 kgTramming Turning RadiusInner R 2800 mm,Outer R 4900 mm
Dimensions ( L x W x H)10920mmx1650 mmx2100 mm/2800 mmWorking Coverage Area : Width x Height6600 mmx5670 mm(5600 mmx5390 mm)

Contact Us:

Sales manager:Vincent Guo
Office tel:+0086-371-55019599
After sales: +0086-371-67990387

Zhengzhou Hanfa Prospecting Machinery Co., Ltd.
Prod Model: HFG-21J
Rod Size: (R32, R38, T38) 3090 mm/3700 mm/4310 mm
Hydraulic System Pressure: 230 Bar
Percussion Power: 20 Kw
Rotation Speed: 0-388 Rpm
Maximum Torque: 752 N.M
Tramming Turning Radius: Inner R 2800 mm, Outer R 4900 mm
As the biggest supplier providing the best prices and quality, we have over 11 years' experience in exporting drilling rig machines!

Established in 1998, our company is the subsidiary of Zhengzhou prospecting Machinery Co., Ltd. Concentrated on scientific research & development, production and marketing. To meet the newest requirements of different customers, we absorb advanced technology to improve the quality of our drilling rigs.

At present, We have more than 20 species such as heavy caliber drilling machines, long earth augers, brunt counter circulation drilling machines and hydrology water-well drilling machines.

Our company has passed ISO9001: 2000 quality administrative system Certification. Our products have a vast market in foreign countries such as Southeast Asia, South America, Africa and other countries and regions.

As one of the most excellent machinery experts, Our general manager Mr. Guo Guang with 10 years' exporting business and service team management dedicates to the research of drilling rigs. Excellent capability, perfect service and eminent quality gain the general recognition both from domestic and overseas users.

Our company implement the corporate culture of "integrity, diligence, strict, profession, and efficiency". We are always ready to provide you with best quality, reasonable price, perfect service system!

We sincerely look forward to establish close, trustworthy and long term relationship with each customers. If you are interested in our products, pls contact us, we will make every effort to help.

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