>> Products Description

The JC690R hydraulic drilling rig designed for both Down-The-Hole (DTH) and Reverse Circulation (RC) drilling applications. Developed for high-efficiency mining, water well drilling, and geotechnical exploration, this rig combines powerful performance, automation, and environmental responsibility into a single machine.

Built on a robust heavy-duty crawler undercarriage with wide tracks and 10° oscillation capability, JC690R ensures excellent stability and gradeability even on rough terrains. The machine is equipped with a Cummins QSL8.9-C360 turbocharged engine (359 horsepower), paired with a Sullair dual-stage rotary screw air compressor capable of 23 bar pressure and 19.5 m³/min air flow. These ensure high penetration rates in rock formations with hardness ranging from F=6 to F=20.

Key to its efficiency is the fully automatic rod handling system, enabling the operator to load and unload drill pipes with a single joystick. The rig also includes a full hydraulic dry-type dust collector, making it compliant with modern environmental standards and ensuring a clean and safe working environment.

With a maximum hole diameter of 152mm, drilling depth of 25 meters, and a torque output of up to 4300 Nm, the JC690R is an all-around performer in demanding drilling conditions.

>> Paremeter

>> Features

1. Powerful Dual-System Drilling Capability (DTH + RC)
JC690R is engineered to switch easily between DTH and RC drilling modes, allowing operators to adapt to different geological formations and project requirements without changing rigs.

2. Industry-Leading Automation
The automatic pipe handling system allows fully automated rod storage, loading, and clamping via a single joystick. This reduces labor intensity, minimizes downtime, and increases operational safety.

3. Precision Control System
The operator-friendly control dashboard consolidates drilling parameters, system diagnostics, and alerts. Real-time display of rig angles and compressor pressure helps the operator optimize drilling accuracy and manage site operations efficiently.

4. High-Efficiency Powertrain
Equipped with a 359HP Cummins engine and a Sullair twin-stage air compressor, JC690R delivers reliable performance in even the hardest rock formations. Fuel injection and a dual-stage air filtration system increase fuel efficiency and extend engine life.

5. Superior Rotation and Feeding System
Featuring a USA Eaton hydraulic motor, the rotary head delivers up to 4300 Nm of torque and adjustable rotational speeds from 0–100 RPM. A stainless-steel reinforced feeding chain and dual cycloidal motors ensure smooth and jam-free operation.

6. Heavy-Duty Undercarriage and Maneuverability
The crawler-type undercarriage with 350mm wide tracks offers 10° oscillation, 20° gradeability, and 2–3 km/h travel speed, enabling swift transitions between drill sites and stability on uneven ground.

7. Hydraulic Dust Collection System
The rig includes a sliding-shield hydraulic dry dust collector to effectively trap drilling dust, improve air quality, and protect internal components — essential for long-term reliability and meeting environmental regulations.

8. Modular Design with Custom Options
The rig is compatible with optional RC cyclone separator and air box systems, making it versatile for mineral sampling, exploration, and precision drilling.

>> Application

Open-Pit and Underground Mining Projects
Ideal for high-efficiency blast hole drilling, mineral exploration, and sampling in both surface and underground settings.

Geological Survey and Exploration Drilling
Accurate and reliable for reverse circulation drilling and core sampling with optional RC modules.

Water Well and Geothermal Drilling
Efficiently drills medium-depth wells in various soil and rock layers, ideal for rural or remote water access projects.

Civil and Infrastructure Projects
Applicable in foundation drilling, anchor bolt hole drilling, and slope stabilization in highways, bridges, tunnels, and dams.

Environmental and Hydrological Investigations
Delivers precision and dust control for scientific sampling and monitoring of groundwater and soil.

>> FAQ

Q1: What is the maximum hole diameter and depth the JC690R can achieve?
A1: JC690R supports hole diameters of 115–152 mm and can drill up to 25 meters deep using either DTH or RC techniques.

Q2: Does the JC690R support automatic rod changing?
A2: Yes. It features a fully automatic drill pipe changer that supports rods of 4 meters in length, with a capacity of 5+1 rods.

Q3: What type of engine and compressor are used in this rig?
A3: The rig uses a Cummins QSL8.9-C360-30 diesel engine with 264 kW @ 2100 RPM output, and a Sullair dual-stage screw compressor delivering 23 bar pressure and 19.5 m³/min flow.

Q4: How does the dust collection system work?
A4: The machine integrates a hydraulic dry-type dust collector with a sliding dust cover, which efficiently removes particulate matter and improves the health and safety conditions at the job site.

Q5: Can it handle steep or uneven terrain?
A5: Yes. With a 10° chassis oscillation, 20° grade climbing ability, and wide track undercarriage, JC690R is optimized for mobility and stability in challenging environments.

Q6: What optional features are available?
A6: Optional features include an RC drilling cyclone separator and air box, making it suitable for reverse circulation mineral sampling projects.

Q7: What types of rock can JC690R drill through?
A7: It is designed for rock formations with a hardness between F=6 to F=20, including granite, basalt, limestone, and other medium-to-hard strata.

Q8: How user-friendly is the control interface?
A8: The control system is pilot-hydraulic operated, with intuitive dashboard readouts, real-time pressure and angle displays, and ergonomic joystick control — making operation easy, even for less experienced users.

>> Keywords

Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories & drilling services. With our advanced technology, high-quality equipment, rigorous testing processes, and comprehensive service network, we consistently provide professional drilling solutions to our customers. These strengths have helped establish the “JCDRILL” brand as a trusted name in the market. Currently, JCDRILL products account for 50% of the domestic market and are exported to more than 40 countries. In November 2002, we were awarded ISO9001:2000 certification.

Our manufacturing facilities, covering an area of 9,625 square meters, specialize in the production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories. We employ more than 500 staff, including 26 experienced engineers from Ingersoll Rand and the former Xuanhua Mining Machinery Company. With our strong technological expertise and robust market service capabilities, we have developed both an efficient marketing system and an excellent service support system, earning the trust of customers worldwide.

Additionally, we serve as an authorized agent for mobile double-screw air compressors from Atlas Copco, Sullair, and Liutech. This allows us to offer drilling rig users high-quality, professional air compressor solutions along with reliable after-sales services.

At JCDRILL, we are committed to our strategic vision: “Survival by Quality, Development by Credit.” We strive to provide users with high-quality drilling solutions. Our after-sales service system follows a strict control framework based on ISO-9000 standards. This system ensures that technical data, problem-solving solutions, and preventive measures are provided for every maintenance project. All spare parts are sourced from new OEM products and come with installation instructions, packing lists, manufacturer documentation, qualification certificates, and warranty certificates.

We uphold the principle of “One Equipment, One Case, Endless Service”—our after-sales support begins from the moment an order is confirmed and lasts throughout the equipment’s entire operational life.