YG Machinery

Need to drill blasting holes in confined spaces inaccessible to large equipment? The mini DTH pneumatic drilling rig is a compact drill that uses compressed air to drive a down-the-hole (DTH) hammer. Located directly behind the drill bit, the DTH hammer transmits high-frequency impact force directly to the rock surface. This design maximizes drilling efficiency while minimizing energy loss. In terms of appearance, the mini DTH pneumatic drilling rig is small in size, with a lightweight steel structure weighing under 500kg. It features a foldable stand for easy manual handling or transport by small vehicles, eliminating the need for large lifting equipment. If your workspace is limited, please contact us for product information on mini DTH drilling rigs.

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YG Small DTH Pneumatic Drilling Rig Technical Parameter

Product model		SKD70	SKQ70	SKD100	SKQ100
Hole diameter		50-90mm	50-90mm	90-130mm	90-130mm
Applicable to rock hardness		F6-20	F6-20	F6-20	F6-20
Hole depth		< 15m	< 15m	<25m	<25m
Rotation speed		110 r/min	110 r/min	110 r/min	110-160 r/min
working pressure		0.5-0.7 MPa	0.5-0.7 MPa	0.5-1.0Mpa	0.5-1.0Mpa
Gas consumption		4m³/min	10m³/min	6m³/min	12m³/min
Promote the cylinder	cylinder diameter	90mm	90mm	140mm	140mm
	Advance stroke	1070mm	1070mm	1070mm	1070mm
	Maximum propulsion	3600N	3600N	9600N	9600N
Electric motor/pneumatic motor	Model/model	Y2-4E	TMY3 blade pneumatic motor	Y112M-4-B5	TMY4 blade pneumatic motor
	power	3kW	3kW	4kW	4.4kW
	voltage	380V	/	380V	/
	Rated speed	1430 r/min	3500 r/min	1440 r/min	3200 r/min
Drill pipe	Drill pipe outer diameter	42mm	42mm	50-60mm	50-60mm
	Drill pipe length	1025mm	1025mm	1025mm	1025mm
Machine weight		295kg	298kg	415kg	398kg
External dimensions		1740×260×420mm	1740×260×420mm	2230×380×550mm	2230×380×550mm

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5 Key Features That Set Small DTH Drilling Rigs Apart

1. Exceptional Portability for Confined Spaces. Small DTH drilling rigs solve a critical industry problem: how to drill blast holes or anchor holes where standard equipment cannot reach. Their compact dimensions (under 2.5m in length for many models) allow operation in narrow tunnels, steep slopes, underground mines, and urban construction sites with limited access.
2. Powerful Percussive Drilling Performance. Despite their small size, these machines deliver impressive drilling speeds. The dth pneumatic drilling rig achieves 20-30 meters per hour in medium-hard rock, competitive with much larger equipment. The direct impact mechanism means energy transfers efficiently without losses through long drill strings.
3. Compressed Air Power System. Air-powered operation offers major advantages. No electrical connections are required at the work site. Compressed air is available in remote locations via portable compressors. The system is inherently safer for underground mining applications where electrical sparks pose explosion risks.
4. Versatile Rock Compatibility. With drilling diameters ranging from 80mm to 130mm (and beyond with different bit configurations), small DTH rigs handle various applications. Harder rock formations benefit from tungsten carbide button bits, while softer formations work well with ball tooth designs.
5. Simplified Maintenance and Repair. Fewer complex components compared to hydraulic systems mean easier maintenance. The pneumatic system is well-understood by technicians worldwide, and replacement parts are readily available. Daily maintenance can be performed by operators without specialized training.

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Where Are Small DTH Pneumatic Drilling Rigs Used? 8 Common Applications

1. Small-scale mining: Used for drilling and blasting holes in small gold mines, iron mines, and quarries. Suitable for the scale of small-scale mining, requiring no large equipment, highly efficient, and convenient.
2. Geological exploration: Used for drilling holes for shallow geological exploration and collecting rock samples. Suitable for complex terrains such as mountains and hills. Highly portable and can be quickly moved to other locations.
3. Construction: Used for foundation pit support, foundation drilling, and anchor bolt drilling. Suitable for narrow construction sites, it does not occupy too much construction space and improves construction efficiency.
4. Water well drilling: Used for drilling small water wells and farmland irrigation wells. Suitable for rural and remote areas. Requires no external power grid and has strong independent operation capabilities.
5. Slope protection: Used for drilling holes for highway and railway slope protection and installing anchor bolts and cables. Suitable for sloping terrain, easy to transport, and precise drilling.
6. Pipeline Laying: Used for drilling pilot holes for gas and water supply pipelines. Small diameter, high precision, suitable for urban roads, residential areas, and other scenarios.
7. Landscape Engineering: Used for drilling holes for installing landscape sculptures and fences in scenic areas and parks. Low noise, no dust, and does not damage the surrounding environment.
8. Emergency Rescue: Used for drilling holes in emergency scenarios such as earthquakes and landslides. Portable and easily transportable, allowing for rapid deployment and rescue operations.

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Small DTH Drilling Rig vs. Large Crawler DTH Drilling Rig: Which Is Right for Your Project?

Choosing between compact and full-size drilling equipment depends on your specific situation:

Choose a Small DTH Drilling Rig When:

• Your work sites have limited access or tight spaces.
• You need to move equipment frequently between locations.
• Your drilling projects are medium-scale (not massive open-pit operations).
• You work in remote locations with limited infrastructure.
• Your budget focuses on versatility rather than maximum production.

Choose a Large Drilling Rig When:

• You operate in large, open mining pits.
• You need to drill very deep holes (30m+) consistently.
• Production speed is your top priority over mobility.
• Your sites have established infrastructure to support large equipment.

For most contractors, mining companies, and construction firms, a small portable DTH drilling rig offers the best balance of capability, versatility, and return on investment.

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Maintenance Tips: Extending Your Small DTH Drilling Rig Lifespan

Protect your investment with regular maintenance:

Daily Checks:

• Inspect drill bits for wear and damage.
• Check air hose connections for leaks.
• Verify lubrication levels in the rotation gearbox.
• Clean debris from the chassis and components.

Weekly Maintenance:

• Replace or clean air filters.
• Check DTH hammer performance.
• Inspect push cylinder operation.
• Tighten any loose bolts or fittings.

Long-Term Care:

• Replace wear components proactively.
• Store the machine in dry conditions.
• Train operators on proper techniques.
• Keep detailed service records.

Proper maintenance can extend your rig’s productive life by 50% or more, significantly reducing your cost per meter drilled.

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Frequently Asked Questions about DTH Pneumatic Drilling Rigs