📦 Underground Mining Drilling Rigs

Kaishan KS311 Underground Drilling Rig

Name: Kaishan KS311 Underground Drilling Rig
Brand: Kaishan
SKU: KS311
Availability: InStock

Model: KS311

The Kaishan KS311 is a compact underground drilling rig engineered for efficient development and production drilling in narrow-vein mining and tunneling projects. Built around a robust boom and feed system, it delivers reliable performance in confined spaces with hole diameters from 45 mm to 102 mm and drilling depths up to 30 meters. Powered by a 55 kW diesel engine, the KS311 combines strong tramming capability with precise boom positioning, making it suitable for underground mines, tunnels, and hydropower caverns. Its modular design simplifies maintenance, while the ergonomic control panel enhances operator safety and productivity. With proven Kaishan rock drilling technology, the KS311 offers a cost-effective solution for contractors seeking a dependable underground drill rig.

Best For

Underground Metal Mining Tunnel Construction Hydropower Caverns Underground Civil Works

Technical Specifications

Model	Kaishan KS311
Impact Pressure	5-7bar
Engine	Cummins qsb39-c
Drilling Method	Hydraulic top hammer drilling
Engine Power	93 kW
Weight	7,500 kg
Dimension (L×W×H)	2300 × 3000 × 3300 mm

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview The Kaishan KS311 is a purpose-built underground drilling rig designed for face drilling, roof bolting, and production drilling in underground mines and tunnels. As part of Kaishan's underground drill rig series, the KS311 balances compact dimensions with powerful drilling performance, making it ideal for operations where space is limited but productivity demands remain high. ## Technical Features The KS311 features a hydraulic boom with a large coverage area, allowing precise positioning of the drill feed for accurate hole placement. The rig is equipped with a high-frequency rock drill that delivers fast penetration rates in medium to hard rock. A robust diesel engine provides reliable power for tramming and drilling, while the articulated chassis ensures excellent maneuverability in narrow drifts. The operator's station is ergonomically designed with intuitive controls, promoting safety and reducing fatigue during long shifts. Additionally, the KS311 incorporates advanced hydraulic systems for smooth boom movements and efficient energy use. ## Applications This underground drill rig is widely used in underground metal mines, coal mines (non-gassy), tunnels, and hydropower projects. It excels in development drilling, cut holes, and production drilling where precision and efficiency are critical. The KS311 can also be adapted for roof bolting and grouting applications with optional attachments. ## Why Choose Kaishan KS311 With decades of experience in rock drilling equipment, Kaishan ensures the KS311 is built to withstand harsh underground conditions. The rig's modular design simplifies maintenance and reduces downtime, while global after-sales support guarantees peace of mind. Whether you are a mining contractor or a mine operator, the KS311 delivers a reliable, cost-effective solution for your underground drilling needs.

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

5-7bar

Engine Power

93 kW

Weight

7,500 kg

Dimension (L×W×H)

2300 × 3000 × 3300 mm

Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.

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Key Advantages

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Compact design for narrow underground workings

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Powerful hydraulic boom with wide coverage

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High-frequency rock drill for fast penetration

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Reliable 55 kW diesel engine for tramming and drilling

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Ergonomic operator station with intuitive controls

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Modular components for easy maintenance

Applications

📍 Underground Metal Mining

Development and production drilling in narrow-vein metal mines.

Solution: KS311's compact size and powerful boom enable efficient drilling in confined stopes, improving ore extraction rates.

📍 Tunnel Construction

Face drilling and blast hole drilling in road, rail, and water tunnels.

Solution: With precise boom positioning and high penetration rate, the KS311 accelerates tunnel advance cycles.

📍 Hydropower Caverns

Drilling for rock support and grouting in underground powerhouses.

Solution: The rig's versatility allows for drilling bolt holes and grout holes, ensuring stable rock conditions.

📍 Underground Civil Works

Drilling for storage caverns, parking garages, and utility tunnels.

Solution: KS311's maneuverability and reliable performance make it suitable for various underground construction projects.

Similar Models in This Category

This model is unique in its series — here are similar models from the same category.

Model	Model	Impact Pressure	Engine	Drilling Method	Engine Power	Inquire
KS311This model	Kaishan KS311	5-7bar	Cummins qsb39-c	Hydraulic top hammer drilling	93 kW	Get a Quote
KQLG-115	KQLG-115	—	—	DTH and Rotary	78 kW	Get a Quote
KAISHAN KJ310	Kaishan KJ310	130bar	—	Rotary / DTH	45 kW	Get a Quote
KAISHAN KJ311	Kaishan KJ311	130BAR	—	Hydraulic percussion + rotation	93 kW	Get a Quote
KAISHAN KJ311D	Kaishan KJ311	130bar	—	Top Hammer / DTH	45 kW	Get a Quote
KM211	Kaishan KM211	150bar	Cummins QSB3.9-C80-31	Top Hammer / DTH	60 kW	Get a Quote
KM311	Kaishan KM311	150bar	Cummins QSB39	DTH / Rotary	60 kW	Get a Quote
KJ422	Kaishan KJ422	180-200bar	Cummins qsb5.9-c160	DTH / Rotary	—	Get a Quote
KJ421	Kaishan KJ421	180-200bar	Cummins QSB3.9-C125	Hydraulic percussion	93 kW	Get a Quote

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Main Components

Diesel engine
Hydraulic boom
Feed beam
Rock drill
Control panel
Undercarriage
Drill string
Flushing system

Working Principle

The Kaishan KS311 underground drilling rig operates on a hydraulic drilling principle. A diesel engine powers the hydraulic system, which drives the boom, feed, and rock drill. The operator positions the boom and feed beam to the desired drilling location using hydraulic controls. The rock drill then applies impact, rotation, and feed force to the drill string, penetrating the rock. Flushing water or air removes cuttings from the hole. The rig's articulated chassis allows tramming between drilling sites, and the hydraulic system ensures smooth, precise movements for accurate hole alignment. This combination of mobility, power, and precision makes the KS311 effective for underground drilling tasks.

Detailed Features

▸Compact and maneuverable for narrow drifts
▸Powerful hydraulic boom with large coverage
▸High-frequency rock drill for fast drilling
▸Reliable diesel engine for tramming and drilling
▸Ergonomic operator station for safety and comfort
▸Modular design for easy maintenance
▸Advanced hydraulic system for smooth operation
▸Optional attachments for versatility

Packaging & Shipping

The Kaishan KS311 underground drilling rig is typically shipped in a 40-foot container or flat rack, depending on configuration. It is securely fastened and protected with anti-rust coating and wrapping. Delivery time is approximately 30-45 days after order confirmation. Port of shipment: Shanghai or Ningbo, China.

After-Sales Service

Kaishan provides a 12-month warranty on the KS311 drilling rig (excluding wear parts). We offer 24-hour online technical support and global after-sales service. Training for operators and maintenance personnel is available at our factory or on-site. Genuine spare parts are supplied through our worldwide distribution network to ensure minimal downtime.

Frequently Asked Questions

What hole sizes and depths can the Kaishan KS311 drill?+

The Kaishan KS311 drills hole diameters from 45 mm to 102 mm and drilling depths up to 30 meters. It uses hydraulic top hammer drilling for development and production drilling. This range suits narrow-vein mining and tunneling work.

What engine powers the Kaishan KS311?+

The Kaishan KS311 is powered by a Cummins qsb39-c engine rated at 93 kW. The rig weighs 7,500 kg and measures 2300 × 3000 × 3300 mm. This engine provides power for tramming and drilling.

What working pressure does the KS311 require?+

The Kaishan KS311 operates at an impact pressure of 5-7bar. This pressure range supports hydraulic top hammer drilling with hole diameters from 45 mm to 102 mm. It is matched to the rig's high-frequency rock drill.

Where can the Kaishan KS311 be used?+

The Kaishan KS311 is used in underground metal mining, tunnel construction, hydropower caverns and underground civil works. Its compact design suits narrow underground workings and confined spaces. It handles face drilling, roof bolting and production drilling.

What drilling method does the KS311 use?+

The Kaishan KS311 uses hydraulic top hammer drilling. It drills holes from 45 mm to 102 mm in diameter to depths up to 30 meters. The hydraulic boom allows precise positioning of the drill feed.

How is the Kaishan KS311 shipped?+

The Kaishan KS311 is typically shipped in a 40-foot container or flat rack, depending on configuration. It is secured with anti-rust coating and wrapping. Delivery takes approximately 30-45 days after order confirmation from Shanghai or Ningbo, China.

What warranty and support come with the KS311?+

Kaishan provides a 12-month warranty on the KS311 drilling rig, excluding wear parts. We offer 24-hour online technical support and global after-sales service. Operator and maintenance training is available at our factory or on-site.

What are the dimensions and weight of the Kaishan KS311?+

The Kaishan KS311 measures 2300 × 3000 × 3300 mm and weighs 7,500 kg. Its compact dimensions suit narrow underground workings. The articulated chassis supports maneuverability in narrow drifts.