📦 Surface Mining Drilling Rigs

Kaishan KG720 DTH Drilling Rig

Name: Kaishan KG720 DTH Drilling Rig
Brand: Kaishan
SKU: KG720
Availability: InStock

Model: KG720

The Kaishan KG720 is a heavy-duty DTH drilling rig engineered for high-efficiency blast hole drilling in mining, quarrying, and construction. Built on a robust crawler chassis with a powerful diesel engine, it delivers reliable performance in hard rock conditions. The KG720 supports hole diameters from 90 mm to 165 mm and achieves drilling depths up to 30 meters, making it ideal for open-pit mining, quarry development, and infrastructure projects. Its advanced rotary head, high-torque drive, and optimized dust suppression system ensure smooth operation, reduced downtime, and compliance with environmental standards. The ergonomic control cabin and centralized lubrication system simplify maintenance and enhance operator comfort. Whether you are drilling in limestone, granite, or basalt, the KG720 offers the durability, productivity, and cost-efficiency that modern drilling contractors demand. With Kaishan's global service network and genuine spare parts support, this DTH drilling rig is a smart investment for demanding drilling operations worldwide.

Best For

Open-Pit Mining Quarrying & Aggregate Production Construction & Infrastructure Water Well & Geothermal Drilling

Technical Specifications

Model	Kaishan KG720
Drilling Depth	30 m
Hole Diameter	90–165 mm
Drilling Method	Down-the-Hole (DTH) Drilling
Engine Power	194 kW
Weight	15,000 kg
Dimension (L×W×H)	8,500 × 2,500 × 3,200 mm

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview The Kaishan KG720 is a crawler-mounted down-the-hole (DTH) drilling rig designed for high-capacity blast hole drilling in surface mining, quarrying, and civil construction. As a flagship model in Kaishan's DTH series, it combines a powerful diesel engine, a heavy-duty undercarriage, and an efficient rotary head to deliver consistent performance in hard and abrasive rock formations. The KG720 is engineered to maximize productivity while minimizing operating costs, making it a preferred choice for contractors seeking a reliable and versatile drilling solution. ## Technical Features The KG720 features a high-torque rotary head with infinitely variable speed control, allowing optimal adjustment for different rock conditions and bit types. Its advanced hydraulic system provides smooth feed and retract motions, reducing wear on drill string components. The rig is equipped with a two-stage dust collection system that effectively controls airborne particles, ensuring a safer and cleaner working environment. The ergonomic operator cabin offers excellent visibility, climate control, and intuitive joystick controls, reducing operator fatigue during long shifts. A centralized lubrication system and easy-access service points simplify routine maintenance, boosting uptime and lowering total cost of ownership. ## Applications The KG720 excels in open-pit mining, where it drills blast holes in limestone, granite, basalt, and other hard rocks. It is equally effective in quarrying operations for aggregate production, as well as in construction projects requiring rock excavation, foundation drilling, and site preparation. The rig's mobility and stability make it suitable for rugged terrain and remote job sites. With its ability to drill holes from 90 mm to 165 mm in diameter and depths up to 30 meters, the KG720 adapts to a wide range of drilling programs, from small-scale quarrying to large-scale mining operations. ## Why Choose Kaishan KG720 Kaishan is a globally recognized manufacturer of drilling equipment, and the KG720 reflects decades of engineering expertise. The rig is built with high-quality components, including a reliable diesel engine, durable hydraulic pumps, and a reinforced mast structure. It is backed by Kaishan's extensive service network, ensuring prompt technical support and genuine spare parts availability. The KG720 delivers a compelling combination of power, efficiency, and durability, making it an excellent investment for drilling professionals who demand consistent results in the most challenging environments.

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

90–165 mm

Drilling Depth

30 m

Engine Power

194 kW

Weight

15,000 kg

Dimension (L×W×H)

8,500 × 2,500 × 3,200 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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Powerful diesel engine delivering high torque for hard rock drilling

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Crawler-mounted chassis for superior mobility on rough terrain

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Drilling depth up to 30 meters and hole diameter 90–165 mm

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Advanced dust suppression system for a cleaner worksite

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Ergonomic operator cabin with joystick controls and good visibility

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Centralized lubrication and easy-access service points for low maintenance

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High-torque rotary head with variable speed for optimized drilling

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Robust mast and feed system ensuring stability and precision

Applications

📍 Open-Pit Mining

Blast hole drilling in hard rock such as granite, basalt, and iron ore.

Solution: KG720's high torque and powerful engine ensure fast penetration and consistent hole quality, boosting mine productivity.

📍 Quarrying & Aggregate Production

Drilling blast holes for limestone, sandstone, and other quarry materials.

Solution: The rig's mobility and dust control system enable efficient quarry operations with minimal environmental impact.

📍 Construction & Infrastructure

Rock excavation, foundation drilling, and site preparation for roads, dams, and buildings.

Solution: Compact crawler design and precise controls allow drilling in confined spaces and uneven ground.

📍 Water Well & Geothermal Drilling

Drilling water wells and geothermal boreholes in hard formations.

Solution: With DTH hammer compatibility, KG720 achieves rapid penetration and reliable hole completion.

KG Series Models

Compare specifications across the series to find the right model.

Model	Model	Drilling Depth	Hole Diameter	Drilling Method	Engine Power	Inquire
KG720This model	Kaishan KG720	30 m	90–165 mm	Down-the-Hole (DTH) Drilling	194 kW	Get a Quote
KG430	Kaishan KG430	30 m	90–165 mm	DTH (Down-The-Hole)	73 kW	Get a Quote
KG520	Kaishan KG520	30 m (single pass); 100 m (with extension rods)	90–165 mm	Down-The-Hole (DTH) drilling	194 kW (260 HP)	Get a Quote
KG590	Kaishan KG590	30 m	90–165 mm	DTH (Down-The-Hole) Hammer Drilling	194 kW (260 HP)	Get a Quote
KG590H	KG590H	25 m	105-152 mm	DTH (Down-The-Hole) Drilling	194 kW (260 HP)	Get a Quote
KG420B	Kaishan KG420B	25 m	90-130 mm	Down-the-Hole (DTH)	58 kW	Get a Quote
KG550	KG550	30 m	115–165 mm	DTH (Down-The-Hole) hammer drilling	73.5 kW	Get a Quote
KG940A	KG940A	30 m	90–165 mm	DTH (Down-The-Hole)	58 kW	Get a Quote
KG920A	Kaishan KG920A	25 m	90–165 mm	DTH (Down-The-Hole) Hammer	118 kW (158 hp)	Get a Quote
KG920B	KG920B	25 m	90-165 mm	DTH (Down-The-Hole)	194 kW	Get a Quote
KG920D	Kaishan KG920D	25 m	90–165 mm	Down-the-Hole (DTH) Hammer Drilling	194 kW	Get a Quote

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Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.

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Main Components

Diesel engine
Crawler undercarriage
Rotary head
Hydraulic mast and feed system
Dust collection system
Operator cabin
Control panel and joysticks
Drill string and DTH hammer

Working Principle

The Kaishan KG720 operates on the down-the-hole (DTH) drilling principle, where a pneumatic hammer is positioned directly behind the drill bit at the bottom of the hole. High-pressure air is delivered through the drill pipe to the hammer, driving the piston to strike the bit with high-frequency impacts. Simultaneously, the rotary head rotates the drill string, indexing the bit for uniform rock breakage. The air also serves to flush cuttings out of the hole, keeping the bit clean and efficient. The rig's hydraulic system controls feed force and rotation speed, allowing the operator to match drilling parameters to rock conditions. The crawler undercarriage provides stability and mobility, while the dust collector captures airborne particles. This combination of impact, rotation, and flushing enables fast and efficient drilling in hard rock, making the KG720 a highly productive DTH rig for demanding applications.

Detailed Features

▸High-torque rotary head with variable speed control
▸Heavy-duty crawler chassis for rough terrain
▸Powerful diesel engine with low fuel consumption
▸Advanced dust suppression system
▸Ergonomic operator cabin with climate control
▸Centralized lubrication system
▸Easy-access service points for maintenance
▸Robust mast and feed system for stability

Packaging & Shipping

The Kaishan KG720 is shipped in a disassembled state for efficient transport. Main components are securely packed in heavy-duty steel frames and weatherproof wrapping. The rig is typically loaded into 40HQ containers or flat racks, depending on configuration. Standard delivery time is 30–45 days after order confirmation. Shipping ports include Shanghai, Ningbo, or Qingdao, China. Custom packaging and labeling are available upon request.

After-Sales Service

Kaishan offers comprehensive after-sales support for the KG720, including a 12-month warranty on major components (excluding wear parts). A 24-hour technical hotline provides prompt assistance. We offer on-site installation and commissioning, operator training, and maintenance workshops. Genuine spare parts are available through our global network, ensuring minimal downtime. Our service engineers can be dispatched worldwide for repairs and troubleshooting.

Frequently Asked Questions

What hole diameter and drilling depth does the Kaishan KG720 support?+

The Kaishan KG720 drills hole diameters from 90 mm to 165 mm and reaches a drilling depth of 30 m. It uses down-the-hole (DTH) drilling for blast hole work. This size range covers surface mining, quarrying and construction drilling.

What engine power does the KG720 use?+

The Kaishan KG720 is powered by a 194 kW diesel engine. The engine drives a high-torque rotary head with variable speed control. The rig runs on a crawler-mounted chassis for mobility on rough terrain.

What air supply does the KG720 need for DTH drilling?+

The Kaishan KG720 is a DTH drilling rig that works with a down-the-hole hammer matched to the 90–165 mm hole diameter range. Air consumption depends on the selected DTH hammer and button bit. The rig is configured for blast hole drilling to a depth of 30 m.

Where can the KG720 be used?+

The Kaishan KG720 suits open-pit mining, quarrying and aggregate production, construction and infrastructure, and water well and geothermal drilling. It handles hard rock conditions with a 30 m drilling depth and 90–165 mm hole diameter. The crawler chassis supports work on rough terrain.

How much does the KG720 weigh and what are its dimensions?+

The Kaishan KG720 weighs 15,000 kg and measures 8,500 × 2,500 × 3,200 mm (L×W×H). The heavy-duty crawler chassis carries this weight for stability during drilling. The robust mast and feed system support the 30 m drilling depth.

How is the Kaishan KG720 shipped?+

The Kaishan KG720 is shipped disassembled, with main components packed in heavy-duty steel frames and weatherproof wrapping. It is typically loaded into 40HQ containers or flat racks, depending on configuration. Standard delivery time is 30–45 days after order confirmation, from Shanghai, Ningbo or Qingdao.

What after-sales support is available for the KG720?+

Kaishan provides a 12-month warranty on major components of the KG720, excluding wear parts. A 24-hour technical hotline gives prompt assistance. On-site installation and commissioning, operator training, maintenance workshops and genuine spare parts are available through the global network.