Hfh420 Rotary DTH Down The Hole Hammer Drill Rig

• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Condition: New
• Motor: DC Motor
• Drill Hole Diameter: 95~140mm
• Drill Hole Depth: 30m
• Bit Type: DTH Hammer Bit
• Model NO.: HFH420
• Drilling Way: Impactor
• Adapt Ability to Rock Hardness: 6~20
• Stand-Alone Gradeability: 25 Degree
• Propelling Way: Cylinder
• Propelling Stroke: 3m
• Max.Lifting Force: 25kn
• Rotary Torque: 4400n.M
• Work Pressure: 1.2~2.4MPa
• Air Consumption: 11~21m3/Min
• Main Power: 58kw Diesel Engine
• Drill Arm Horizontal Pendulum Angle: Left35 Degree Right35 Degree
• Transport Package: Machine in Nude Package, Parts in Wooden Case
• Specification: 6000*2200*2100mm
• Trademark: HF
• Origin: Zhengzhou City
• HS Code: 8430490000
• Production Capacity: 20sets/Month

Product Description

Product Features                                               

1.Equipped with two motors and planetary gear gyrator,has the characteristics of large rotary torque, high 
efficiency and durable.
2.Equipped with 40 kw yuchai four cylinder diesel engine,elastic coupling transmission, stable and reliable, with a pre-filter, oil bath type air filter and air filter level 3, vice water tank and is equipped with (antifreeze), greatly improving the diesel engine's adaptability to the environment.
3.Multi-way valve adopts two layers of double entry structure, location is reasonable, easy to operate.
4.The prefilter, oil bath type air filter and air filter level 3, for the diesel engine working under high dust 
environment provides the guarantee.
5.Power output gear box with double gear structure of mercury
6.Drill arm, novel structure, convenient adjustment,greatly improve the area of drilling, apply to drill
horizontal hole low. The lowest level hole height 300mm
7.Using engineering with walking motor, strong gradeability, low failure rate.








Parameter                                                          
 

Model Parameters		HFH420	HFH420M hybrid power
Adapt ability to rock hardness		6~20	6~20
Borehole diameter	mm	95~140(standard 90)	90~200
Borehole depth	m	30	30
Standalone climbing ability	°	≥25	30
Propelling way		Cylinder	Cylinder
Propelling stroke	m	3	3
Max. lifting force	kN	25	25
Rotary torque	N.m	4400	6000
Rotary speed	r/min	0~100	0~90
Working air pressure	MPa	1.2~2.4	1.2~2.4
Air consumption	m3/min	11~21	11~21
Power source	kw	58kw diesel engine	58kw diesel engine and 55kw electric motor
Horizontal swing angle of drill arm	°	Left 35 Right 35	Left 35 Right 35
Max.swing angle of carriage	°	Left 92 Right 12	Left 92 Right 12
Walking speed	km/h	2.5	2.5
Ground clearance	mm	300	min.300
Dimensions	mm	6000*2200*2100	6300*2200*2100
Weight	kg	5000	6200

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