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Vincent Guo



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HFU-4A Full Hydraulic Underground Core Drilling Rig

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The full hydraulic underground drilling rig HFU-4A is applied to the following fields: coal, metallurgy, geology and engineering, etc. It is used in the large-diameter gas drainage and the water injection hole of mine, tunnel and coal mine. It is also used in the large-diameter horizontal drilling surface engineering.

Main Feature:

1. It is separate in structure, small in size, light in weight, flexible in movement and convenient in operation.

2. The hydraulic pump is driven by explosion-proof electric motor through operating system, then the hydraulic pump enforces hydraulic motor to make drill head rotate, and at the same time, the movement of drill head is realized by oil cylinder & chain double speed mechanism.

3. Hydraulic chuck can satisfy the function of shackles and power-off protection.

4. The sliding and extending & retracting function of the mast makes it convenient for the bottom of mast to touches the ground or platform, thus the drill rig will be more stable.

5. The swinging arm and mast can do luffing movement, which satisfy the request of multi-angle drilling.

6. The range of spindle rotating speed is wide and the torque is large.

Corresponding parameter set not found, please add it in property template of background
Items Unit Data Remark  
Rated rotate torque N.m 1440 When 490r/min  
Rotate speed r/min 0-489-876    
Lifting capacity kN 98    
Feeding capacity kN 50    
Electromotor rated power kw 75 Y280S-4-35B  
Electromotor rated RPM r/min 1478    
Feeding stroke mm 1800    
Rotator rising speed Working mm/s 31.4    
Max. mm/s 88    
Rotator Declining speed Working mm/s 61.58    
Max. mm/s 172.4    
Hydraulic pump Main pump ERR100B Rated pressure MPa 28    
Max. displacement L/min 148  
Mid pump A10VO18 Rated pressure MPa 28  
Max. displacement L/min 26.64  
Rear pump A10VO10 Rated pressure MPa 28  
Max. displacement L/min 14.8  
Wireline winch lifting capacity(single wire) t 0.8  
Wireline winch Speed (min) m/min 91 Wireline Dia. Mm 6
Wireline winch Speed (max) 240
Mud pump max displacement L/min 160 When 2.5MPa
Mud pump max pressure MPa 10 When 44L/min
Mast inclined angle ° 0-150 Continually adjustable
Drill Rod and drill capacity mm Φ55.5×1500 BQ 550m
mm Φ69.9×1500 NQ 400m
mm Φ88.9×1500 HQ 250m
mm Φ114.3×1500 PQ 150m
Dimensions of main machine mm (LxWxH) 3730x1200x1850
Total weight of main machine, power cabinet and power station KG 3500  


Drilling Diameter: BQ, NQ, HQ, PQ

Maximum Drilling Depth: 550\400\250\150m

Rated Power: 75kw

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