Underground Jumbo Drilling Rig Machine Rotary Drilling Operation An underground drilling rig performs rotary drilling operations by utilizing high-torque rotational force to penetrate subsurface layers. The rig's powered rotary head drives a drill string equipped with specialized cutting bits, which grind through soil, rock, or other geological formations. During the process, drilling fluid is injected through the hollow drill pipe to cool the bit, remove cuttings, and stabilize the borehole wall. The auger drill rod simultaneously transmits rotational energy downward while conveying excavated material upward through its helical flights. This mechanized process enables precise vertical/horizontal boring for applications including foundation piling, tunnel construction, utility installation, and mineral exploration. Modern rigs incorporate computerized monitoring systems to optimize rotational speed, feed pressure, and alignment control, ensuring operational efficiency while minimizing ground disturbance in urban or environmentally sensitive areas.
SANROCK SRJ18 Underground Jumbo Drilling Rig Scope of application One-boom face drilling rig for medium sized underground drifts,
with coverage area 7-35m².
Main benefits
> Optimized: for small to medium size tunnels and drifts down to 2.4 m widex2.9 m high,
up to 6 m widex6 m high.
>Economical and efficient: with automatic drilling, automatic return and anti-jamming functions increased the service life of drilling tools.
> Intelligent: with function of real-time monitoring and evaluation of construction conditions by digital recording data of the number and depth of holes.
>Safe and simple operation: equipped with automatic diagnosis and voice alarm system. High popularity: and good after-sales service support.
Products Description
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Product name:jumbo drilling rig
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Model
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SRJ18
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Maximum Coverage Area(H*W)
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2.9*2.4m
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Minimum Coverage Area(H*W)
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6.3*6.5m
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Overall Dimension(L*W*H)
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11700*1800*2100/2900mm
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Weight
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13.6T
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Turning Radio Outer/Inner
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5600/3150mm
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Rock Drill Range
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Ф41-76mm
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Rock Drill Power
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18kw
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Rock Drill Rate
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60Hz
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Drill Rod
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T38-H35-R32-4305mm
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Hole Depth
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4000mm
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Diesel Engine
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Yuchai 66kw
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Main Electric Motor
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55kw
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Total Installed Power
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62kw
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Rock drill
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Shank
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T38
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Drill range
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41mm-76mm
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Reaming range
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76mm-4127mm
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Height over drill centre
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95mm
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Length without shank
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1008mm
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Impact power
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18kW
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Impact rate
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60Hz
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Rated hydraulic pressure
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210bar
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Maximum hydraulic pressure
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230bar
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Rotation system
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Separate rotation
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Rotation speed
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0~215rpm
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Rotation torque
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max 1000Nm
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Company Profile
1.What can you buy from us?
DTH drilling rig,Integrated DTH DTH drilling rig ,core drilling rig,highway pile driver,solar pile driver ,anchor pile driver,rotary drill rig ,Top Hammer drill rig,Underground jumbo drill rig ,DTH hammer,screw air compressor,screw air compressor,piston air compressor,pneumatic rock drill ,drill rod,drill bit,PDC drill bit,top hammer drill bit,tricone bit ,spare parts.
2.How can I make payment?
A:You can pay by credit card, TT, Western Union, LC etc.
3.How is the shipment? How long dose it take?
A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT. You can also appoint shipping method you like before we ship.
4.How is your quality control?
A: We have our own experienced QC. There will be strict inspection and testing for every order before shipping out.
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