📦 Underground Mining Drilling Rigs

Kaishan KJ212 Hydraulic Tunnelling Drilling Rig

Name: Kaishan KJ212 Hydraulic Tunnelling Drilling Rig
Brand: Kaishan
SKU: KJ212
Availability: InStock

Model: KJ212

Kaishan KJ212 Hydraulic Tunnelling Drilling Rig (official model KJ212). Source: Zhejiang Kaishan Heavy Industry product centre. ｜官方中文名：KJ212型矿用液压掘进钻车

Best For

Underground Metal Mining Coal Mine Roadway Development Hydropower Tunnel Excavation Geological Exploration

Technical Specifications

Model	Kaishan KJ212
Drilling Depth	30 m
Hole Diameter	33–76 mm
Drilling Method	Rotary / DTH
Engine Power	45 kW
Weight	7,800 kg
Dimension (L×W×H)	6,200 × 1,450 × 2,100 mm

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

The Kaishan KJ212 is a compact underground mining drilling rig engineered for efficient face drilling, roof bolting, and small-scale development in narrow-vein mines and tunnels. Built around a robust hydraulic boom and a high-frequency rock drill, it delivers reliable drilling performance with a maximum depth of 30 m and hole diameters from 33 mm to 76 mm. Its 45 kW diesel engine and four-wheel drive chassis provide strong tramming capability on rough underground roadways, while the articulated steering ensures maneuverability in confined spaces. The KJ212 supports both rotary and DTH drilling methods, making it adaptable to varying rock conditions. With a compact 6,200 × 1,450 × 2,100 mm footprint and 7,800 kg operating weight, it balances stability with agility. Operators benefit from an ergonomic control panel, low noise levels, and easy maintenance access. Ideal for underground metal mines, coal mines, and hydropower tunnels, the KJ212 improves productivity and reduces labor intensity. Kaishan’s global service network ensures spare parts availability and technical support, making the KJ212 a dependable choice for underground drilling contractors seeking cost-effective performance.

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.

Hole Diameter

33–76 mm

Drilling Depth

30 m

Engine Power

45 kW

Weight

7,800 kg

Dimension (L×W×H)

6,200 × 1,450 × 2,100 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 engineer

Key Advantages

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Compact underground design for narrow-vein mining and tunnels

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Powerful hydraulic rock drill with high penetration rate

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Four-wheel drive and articulated steering for rough terrain

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Supports both rotary and DTH drilling methods

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Maximum drilling depth of 30 m and hole diameter 33–76 mm

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Ergonomic control panel and centralized lubrication for easy operation

Applications

📍 Underground Metal Mining

Face drilling and roof bolting in narrow-vein metal mines.

Solution: The KJ212’s compact size and powerful rock drill enable efficient drilling in confined stopes, improving ore recovery.

📍 Coal Mine Roadway Development

Drilling blast holes and support holes in coal mine roadways.

Solution: With DTH and rotary capability, the rig handles varying coal-rock conditions, ensuring fast advance rates.

📍 Hydropower Tunnel Excavation

Drilling for tunnel blasting and rock support in hydropower projects.

Solution: The articulated chassis and 30 m depth capacity allow precise drilling in curved tunnels, reducing overbreak.

📍 Geological Exploration

Shallow geological drilling and sampling in underground operations.

Solution: The KJ212 provides reliable core drilling with adjustable rotation speed and feed force, ideal for exploration.

Similar Models in This Category

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

Model	Model	Drilling Depth	Hole Diameter	Drilling Method	Engine Power	Inquire
KJ212This model	Kaishan KJ212	30 m	33–76 mm	Rotary / DTH	45 kW	Get a Quote
KQLG-115	KQLG-115	25 m	90–152 mm	DTH and Rotary	78 kW	Get a Quote
KAISHAN KJ310	Kaishan KJ310	—	32-76 mm	Rotary / DTH	45 kW	Get a Quote
KAISHAN KJ311	Kaishan KJ311	—	32-76mm	Hydraulic percussion + rotation	93 kW	Get a Quote
KAISHAN KJ311D	Kaishan KJ311	—	32–89 mm	Top Hammer / DTH	45 kW	Get a Quote
KJ422	Kaishan KJ422	—	76-152 mm	DTH / Rotary	—	Get a Quote
KJ421	Kaishan KJ421	—	—	Hydraulic percussion	93 kW	Get a Quote
KM211	Kaishan KM211	—	—	Top Hammer / DTH	60 kW	Get a Quote
KM311	Kaishan KM311	—	—	DTH / Rotary	60 kW	Get a Quote

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Main Components

Hydraulic rock drill
Drilling boom
Feed beam
Diesel engine
Hydraulic pump
Control panel
Undercarriage with four-wheel drive
Centralized lubrication system

Working Principle

The Kaishan KJ212 underground mining drilling rig operates on a hydraulic principle. A diesel engine drives a hydraulic pump that supplies pressurized oil to the rock drill, boom, and tramming motors. The rock drill converts hydraulic energy into impact energy, rotating the drill rod simultaneously. The feed system pushes the rod into the rock, while the boom positions the drill head accurately. For DTH drilling, compressed air is supplied separately to the down-the-hole hammer, which strikes the rock directly. The rig’s control system allows the operator to adjust impact force, rotation speed, and feed rate to match rock conditions. The four-wheel drive chassis uses hydraulic motors for tramming, and articulated steering enables tight turns. This integrated hydraulic system ensures smooth, efficient drilling with minimal downtime.

Detailed Features

▸Compact dimensions for narrow underground workings
▸High-frequency hydraulic rock drill for fast penetration
▸Articulated steering for maneuverability
▸Four-wheel drive for rough terrain
▸Supports rotary and DTH drilling
▸Ergonomic control panel with clear gauges
▸Centralized lubrication for extended component life
▸Low noise and emission levels

Packaging & Shipping

The Kaishan KJ212 is shipped in a disassembled state for efficient container loading. Main components are packed in steel frames and wrapped with anti-rust film. The rig fits into a 40HQ container. Delivery time is 30–45 days after order confirmation. Port of shipment: Shanghai or Ningbo, China. Custom packaging and shipping marks are available upon request.

After-Sales Service

Kaishan offers a 12-month warranty on the KJ212 drilling rig. A 24-hour technical support hotline is available for troubleshooting. We provide free training for operators and maintenance personnel at our factory or on-site. Genuine spare parts are stocked in regional warehouses for fast delivery. Our global service network ensures quick response and minimal downtime.

Frequently Asked Questions

What hole sizes and depth can the KJ212 drilling rig achieve?+

The KJ212 drills hole diameters from 33 mm to 76 mm to a maximum drilling depth of 30 m. It supports both rotary and DTH drilling methods for varying rock conditions.

What engine powers the Kaishan KJ212 underground drilling rig?+

The KJ212 is powered by a 45 kW engine. The four-wheel drive chassis and articulated steering provide tramming capability on rough underground roadways.

What are the dimensions and weight of the KJ212?+

The KJ212 measures 6,200 × 1,450 × 2,100 mm (L×W×H) and has an operating weight of 7,800 kg. Its compact footprint suits narrow-vein mines and tunnels.

Where can the KJ212 underground mining drilling rig be used?+

The KJ212 is used for underground metal mining, coal mine roadway development, hydropower tunnel excavation and geological exploration. It handles face drilling, roof bolting and small-scale development in confined spaces.

Does the KJ212 support DTH drilling?+

Yes, the KJ212 supports both rotary and DTH drilling methods. It delivers a maximum drilling depth of 30 m with hole diameters from 33 mm to 76 mm.

How is the KJ212 drilling rig shipped?+

The KJ212 is shipped disassembled for efficient container loading and fits into a 40HQ container. Main components are packed in steel frames and wrapped with anti-rust film, with delivery in 30–45 days after order confirmation from Shanghai or Ningbo, China.

What warranty and support come with the KJ212?+

The KJ212 carries a 12-month warranty. A 24-hour technical support hotline is available, free operator and maintenance training is provided, and genuine spare parts are stocked in regional warehouses.