📦 Underground Mining Drilling Rigs
Kaishan KM311 Underground Drill Rig
Model: KM311
The Kaishan KM311 is a compact underground drill rig engineered for efficient hard rock drilling in confined tunnels and mining galleries. Built for DTH and rotary drilling, it delivers reliable performance with a drilling depth of up to 30 meters and hole diameters from 76 to 130 mm. Powered by a 78 kW diesel engine, the KM311 combines a robust chassis with a high-torque rotary head and powerful feed system, ensuring fast penetration in medium to hard rock. Its articulated boom and compact dimensions allow precise positioning in narrow headings, while the ergonomic control panel simplifies operation. Ideal for underground mining, tunnel excavation, and underground water well drilling, the KM311 offers a cost-effective solution for contractors seeking durability and productivity in challenging subterranean environments.
Technical Specifications
| Model | Kaishan KM311 |
| Impact Pressure | 150bar |
| Engine | Cummins QSB39 |
| Drilling Method | DTH / Rotary |
| Engine Power | 60 kW |
| Weight | 12000 kg |
| Dimension (L×W×H) | 10700 × 1,750 × 2,000 mm |
Product Details
Technical Selection
Key parameters for matching this machine to your job. Send us your hole diameter, depth and rock condition and our engineers will confirm the right configuration.
Impact Pressure
150bar
Engine Power
60 kW
Weight
12000 kg
Dimension (L×W×H)
10700 × 1,750 × 2,000 mm
Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.
Check with an engineerKey Advantages
Compact design for narrow underground tunnels and galleries
Powerful 78 kW diesel engine for reliable performance in remote areas
Drilling depth up to 30 meters with hole diameters from 76 to 130 mm
High-torque rotary head suitable for DTH and rotary drilling
Articulated boom for precise positioning and wide coverage
Ergonomic control panel for easy operation and reduced operator fatigue
Dust suppression system for a cleaner working environment
Applications
📍 Underground Mining
Development and production drilling in hard rock mines, including blast hole drilling and bolt hole installation.
Solution: The KM311's compact size and powerful drilling system enable efficient drilling in narrow stopes and drifts, improving productivity and safety.
📍 Tunnel Excavation
Drilling blast holes for tunnel faces in civil engineering and infrastructure projects.
Solution: With its articulated boom and high penetration rate, the KM311 quickly drills accurate blast holes, accelerating tunnel advance.
📍 Underground Water Well Drilling
Drilling water wells in subterranean formations for water supply in mines or remote communities.
Solution: The KM311 can be equipped with DTH hammers to drill through hard rock, providing a reliable solution for underground water extraction.
📍 Geotechnical Exploration
Core drilling and sampling for geological surveys and foundation testing in underground environments.
Solution: The rig's precise control and adjustable drilling parameters allow for accurate sample collection and geological assessment.
KM Series Models
Compare specifications across the series to find the right model.
| ☑ | Model | Model | Impact Pressure | Engine | Drilling Method | Engine Power | Inquire |
|---|---|---|---|---|---|---|---|
| KM311This model | Kaishan KM311 | 150bar★ | Cummins QSB39 | DTH / Rotary | 60 kW | Get a Quote | |
| KM211 | Kaishan KM211 | 150bar | Cummins QSB3.9-C80-31 | Top Hammer / DTH | 60 kW | Get a Quote |
Compare 2–3 models? Tick the boxes and send them together — we will quote each one for you.
Tip: select multiple models and click “Inquire All” — the selected models are added to the quote form automatically, so you get a faster quotation.
Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.
Main Components
- Diesel engine
- Hydraulic pump
- Rotary head
- Feed system
- Articulated boom
- Control panel
- Dust suppression system
- Undercarriage
Working Principle
The Kaishan KM311 underground drill rig operates on a hydraulic system that powers the rotary head, feed mechanism, and boom movements. The diesel engine drives a hydraulic pump, which supplies pressurized oil to various components. The rotary head rotates the drill string while the feed system applies thrust to advance the bit into the rock. For DTH drilling, compressed air is directed through the drill pipe to actuate the hammer, which delivers high-frequency impacts to crush the rock. The cuttings are flushed out of the hole by the air or water flow. The articulated boom allows the operator to position the drill head accurately at different angles and locations without moving the entire rig. The control panel enables precise adjustment of rotation speed, feed force, and air pressure to match rock conditions, ensuring optimal drilling efficiency and bit life.
Detailed Features
- ▸Compact and maneuverable for confined underground spaces
- ▸High-torque rotary head for efficient rock penetration
- ▸Articulated boom for flexible positioning
- ▸Powerful diesel engine for reliable performance
- ▸Ergonomic controls for operator comfort
- ▸Dust suppression system for cleaner air
- ▸Robust construction for durability in harsh conditions
- ▸Easy maintenance access for reduced downtime
Packaging & Shipping
The Kaishan KM311 is shipped in a disassembled state for efficient container loading. It is typically packed in a 40HQ container, with major components secured on steel frames and wrapped in protective film. Smaller parts are packed in wooden cases. Delivery time is approximately 30-45 days after order confirmation. Shipping ports include Shanghai, Ningbo, or Qingdao, depending on customer preference.
After-Sales Service
Kaishan offers a 12-month warranty on the KM311 underground drill rig, covering manufacturing defects. A 24-hour technical support hotline is available for troubleshooting. We provide on-site installation and commissioning services, as well as operator training. Genuine spare parts are available globally through our distribution network, ensuring minimal downtime. Regular maintenance kits and service agreements are also offered to extend equipment life.
Frequently Asked Questions
What hole sizes and drilling depth can the Kaishan KM311 handle?+
The Kaishan KM311 drills hole diameters from 76 to 130 mm and a drilling depth of up to 30 meters. It supports both DTH and rotary drilling methods. This range covers medium to hard rock drilling in confined headings.
What engine powers the Kaishan KM311 underground drill rig?+
The Kaishan KM311 is powered by a Cummins QSB39 engine rated at 60 kW. The diesel engine supports reliable operation in remote underground locations. The rig has a weight of 12000 kg.
What impact pressure does the KM311 require for DTH drilling?+
The Kaishan KM311 operates at an impact pressure of 150bar for DTH drilling. The high-torque rotary head is suitable for both DTH and rotary drilling. The feed system delivers a maximum feed force of 25 kN for penetration in medium to hard rock.
What are the dimensions of the KM311 for underground tunnel work?+
The Kaishan KM311 measures 10700 × 1,750 × 2,000 mm (L×W×H). Its compact design allows maneuverability in narrow underground tunnels and galleries. The articulated boom provides precise positioning and wide coverage.
Which applications is the Kaishan KM311 drill rig suitable for?+
The Kaishan KM311 is used for underground mining, tunnel excavation, underground water well drilling and geotechnical exploration. It is built for hard rock drilling in confined tunnels and mining galleries. A dust suppression system supports a cleaner working environment.
How is the Kaishan KM311 packaged and shipped?+
The Kaishan KM311 is shipped in a disassembled state, typically packed in a 40HQ container with major components secured on steel frames and wrapped in protective film. Smaller parts are packed in wooden cases. Delivery time is approximately 30-45 days after order confirmation, with shipping ports including Shanghai, Ningbo or Qingdao.
What after-sales support is available for the KM311?+
Kaishan offers a 12-month warranty on the KM311 underground drill rig covering manufacturing defects. A 24-hour technical support hotline is available for troubleshooting. On-site installation and commissioning services, operator training and genuine spare parts through the global distribution network are also provided.
Related Insights
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Where This Machine Is Used
Is This Rig Right for My Project?
Answer seven questions about your hole, depth and rock — get a matched rig, compressor, hammer, bit and rod.
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Recommended System
Rig + air compressor + drilling tools matched to your project. Get pre-matching advice from our engineers.
Recommended Equipment Configuration
Matched from real machine parameters — rig, compressor, hammer, bit and rod working as one system.
KM311
- Hole range
- 32–51 mm
Why matched
Parameter-matched to the machine on this page.
KSCY-175/8
- Working pressure
- 8 bar
- Air flow
- 5 m³/min
Why matched
Covers the required 8 bar / 0.7 m³/min air demand (rated 8 bar / 5 m³/min).
System requirement: 8 bar / 0.7 m³/min · 32–51 mm
