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Kaishan DTH Drilling Rigs

Heavy-duty surface crawlers and integrated rigs for open-pit mining, quarry blasting, and slope stabilization. High penetration rate and anti-jamming hydraulic system.

Kaishan KG726 25m Crawler Air DTH Drill Rig for Open-Pit Mining

Engineered for High-Efficiency Open-Pit Blasting & Quarrying
The Kaishan KG726 Series (KG726III / KG726HIII) is a heavy-duty crawler down-the-hole (DTH) drill rig developed for harsh open-pit mining, civil blasting, and slope excavation. Powered by a fuel-efficient 59 kW Yuchai diesel engine, it delivers high torque and up to 30° climbing capability across rugged terrain.
Drilling Diameter: Φ90 – 115 mm
Max Economical Depth: 25 m
Rock Hardness Adaptability: f = 6 – 20
Mobility & Flexibility: Plunger-piston track drive, 350–2750 mm horizontal hole range
Environmental Compliance: China-III emission standards with optional dry-type dust collection (KG726HIII)
Factory-direct supply, OEM customization, and complete matched portable screw air compressor packages available upon request.
  • Product Detail Introduction
Heavy-Duty Mining & Construction Equipment

Kaishan KG726 Series Crawler DTH Drill Rig for Open-Pit Mining

Engineered for open-pit mining, quarrying, and blasting hole construction. The KG726III / KG726HIII air down-the-hole (DTH) drill rig combines high torque, robust climbing ability, and national environmental compliance to deliver superior drilling efficiency up to 25m depth.

Drilling Diameter Φ90 – 115 mm
Economical Drilling Depth 25 m
Rated Power 59 kW @ 2400 rpm
Max Rotary Torque 2000 N·m

kg726-crawler-dth-rig-open-pit-quarry-blast-hole-drilling

Key Features & Structural Advantages

1. Powerful & Eco-Friendly Powertrain

Equipped with a high-torque Yuchai China-III emission standard diesel engine (59 kW), ensuring strict environmental compliance, fuel economy, and reliable performance in high-dust quarrying environments.

2. Upgraded Hydraulic Drive & Mobility

Features a plunger-piston ramming motor and four-wheel track drive that significantly enhance operating pressure, gradeability (climbing capacity up to 30°), and off-road stability across rugged terrain.

3. Multi-Angle Boom & Low Horizontal Drilling

Expanded pitch and dual-cylinder lifting arm meet extreme position requirements. Minimum horizontal hole height reaches down to 350 mm, while maximum reach extends to 2750 mm.

4. Enhanced Structural Durability

Heavy-gauge thickened profile housing ensures long service life. Includes dedicated lifting rings for secure transit and crane handling on and off job sites.

5. Ergonomic Inclined Guide Rail

The feed guide rail is installed at an ergonomic tilt angle, providing operators with unobstructed observation of hole collar positioning and smoother rod changing operations.

6. Optional Dry Dust Collection (KG726HIII)

The KG726HIII model is equipped with an integrated high-efficiency dry dust collector to maintain clean breathing zones and comply with green mine regulations.

Typical Industrial Applications

The KG726 series is designed for heavy-duty rock drilling applications with rock hardness ratings from f = 6 to 20:

  • Open-pit bench mining & quarry operations
  • Civil engineering blasting hole construction
  • Hydropower & dam foundation engineering
  • Highway & railway cutting excavation
  • Slope stabilization & rock anchoring

kg726-dth-drill-rig-with-portable-diesel-screw-air-compressor

Technical Specifications

Parameter / Specification KG726III KG726HIII (Dust Collector)
Overall Machine Weight 4,200 kg 4,400 kg
Outer Dimensions (L × W × H) 5600 × 2400 × 2300 mm 5600 × 2600 × 2300 mm
Drillable Rock Hardness f = 6 – 20
Drilling Diameter Φ90 – 115 mm
Economical Drilling Depth 25 m
Rotary Speed 0 – 120 rpm
Max Rotary Torque 2000 N·m
Lifting Force 18 kN
Feed Method & Stroke Oil cylinder – leaf chain / 3780 mm
Travelling Speed & Climbing Ability 0 – 2.5 km/h / ≤ 30°
Ground Clearance 350 mm
Tilt Angle of Boom (Up / Down / Total) Up: 50° / Down: 135° / Total: 185°

 

Parameter KG726III KG726HIII (Dust Collector)
Operating Weight 4,200 kg 4,400 kg
Dimensions (L × W × H) 5600 × 2400 × 2300 mm 5600 × 2600 × 2300 mm
Drillable Rock Hardness f = 6 – 20
Drilling Diameter Φ90 – 115 mm
Economical Drilling Depth 25 m
Rotary Speed 0 – 120 rpm
Max Rotary Torque 2000 N·m
Lifting Force 18 kN
Feed Mechanism / Feed Stroke Oil cylinder – leaf chain / 3780 mm
Travelling Speed / Gradeability 0 – 2.5 km/h / ≤ 30°
Ground Clearance 350 mm
Boom Tilt Angle Down 135°, Up 50° (Total 185°)
Boom Swing Angle Left 100°, Right 45° (Total 145°)
Drill Boom Pitch Angle Down 50°, Up 25° (Total 75°)
Drill Boom Swing Angle Left 44°, Right 45° (Total 89°)
Guide Beam Compensation Length 900 mm
Engine Model & Power Yuchai YCD4R23T8-80 (59 kW / 2400 rpm)
Equipped DTH Hammer / Drill Rod M30 / Φ64 × 3000 mm
Recommended Air Consumption 9 – 17 m³/min
Horizontal Hole Height (Min / Max) 350 mm / 2750 mm

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