Premium Rotary System Air Compressor Integrated Down The Hole Rock Blasting Hole Surface Drilling Rig With Dust Collector

>> Products Description

JC843 is engineered for precision drilling in medium depth projects, combining robust power with advanced feed technology to achieve stable and efficient hole formation. Designed for drilling depths of up to 21 meters and hole diameters between φ90 and 115mm, it is ideal for applications requiring consistent performance in moderate rock conditions. The rig's rotation system features an Eaton 2K series motor delivering up to 2200N·m torque and variable speeds from 0 to 100rpm, providing controlled drilling dynamics. Its feed system utilizes a motor-driven chain mechanism that ensures smooth, reliable feed motion with a 3400mm stroke and 1100mm extension, capable of applying a maximum feeding force of 12kN and a feed speed up to 1m/s. Powered by a high-output 162kW Yuchai diesel engine, JC843 integrates a two-stage compression air system delivering 15m³/min at 1.8MPa working pressure, optimizing pneumatic energy for down-the-hole hammer efficiency. The rig's high-strength steel feed beam and durable frame construction enhance operational stability and longevity under heavy workloads. Weighing 9.5 tons and measuring 8400×2300×2400 mm, the rig balances substantial power with manageable transport size. With tramming speeds of 3km/h (fast) and 1.5km/h (slow), JC843 adapts well to site mobility demands. The 12-core dry-type dust collector improves onsite air quality and maintenance convenience.Incorporating QIANGTIAN control valves and imported IP56-rated electrical components, JC843 guarantees precise hydraulic control and robust environmental protection.

>> Paremeter

>> Features

>> Control System: Rear-mounted control console integrates drilling, tramming, and system monitoring in one centralized panel. Equipped with smart instrumentation for real-time diagnostics, fault alerts, and operational feedback—enhancing safety and workflow efficiency.

>> Power & Air System: Driven by a 162 kW Yuchai turbocharged diesel engine for reliable, fuel-efficient performance. Paired with a two-stage compressor system delivering 15 m³/min at 1.8 MPa, ensuring consistent high-pressure output for demanding DTH operations.

>> Rotation & Feeding Unit: Eaton 2K series motor delivers up to 2200 N·m torque with a stepless speed range from 0–100 rpm. Multi-gear rotary head adapts to varied geological conditions. The chain-driven feed system provides 3400 mm stroke and 1100 mm extension for strong, stable push and pull force.

>> Drilling Structure: Compatible with φ64×3000 mm drill rods and 3" DTH hammers, supporting boreholes from φ90–115 mm to depths of 21 m. Reinforced high-strength steel feed beam minimizes vibration and ensures long-term durability in rugged environments.

>> Mobility & Dust Control: Equipped with a crawler chassis for robust site adaptability and dual-speed tramming (Fast: 3 km/h, Slow: 1.5 km/h). Integrated 12-core dry-type dust collector ensures effective particulate filtration, supporting cleaner air and safer operation in urban or enclosed drilling sites.

>> Application

JC843 DTH Crawler Drilling Rig for Medium-Depth Rock Drilling Projects

JC843 is designed for precision drilling in medium-depth rock formations, ideal for surface mining, quarry blasting, geothermal exploration, and municipal infrastructure foundation projects. With a drilling depth of up to 21 meters and hole diameter from φ90 to 115mm, it is suitable for applications requiring both mobility and stability in complex terrains.

Thanks to its 162kW Yuchai diesel engine and a two-stage 15m³/min @ 1.8MPa air compressor, JC843 delivers consistent performance for down-the-hole (DTH) drilling, even in hard or fractured rock layers.

The Eaton 2K series rotary motor provides 2200 N·m torque with variable speeds from 0–100 rpm, adapting to varying geological conditions. The chain-driven feed system and high-strength steel feed beam ensure efficient and accurate borehole formation with minimal vibration.

JC843 is commonly deployed in:

Open-pit and underground mining operations

Hydroelectric anchoring and slope stabilization

Blasting hole preparation in construction sites

Geological and hydrological survey drilling

Hard rock water well drilling

Its dual-speed crawler system and integrated dry-type dust collector make it an ideal solution for urban construction zones, environmentally sensitive areas, and remote drilling sites where reliability, dust control, and power are critical.

>> FAQ

Q1: What is the maximum drilling depth and diameter for JC843?
A: JC843 supports drilling depths up to 21 meters with hole diameters ranging from φ90 to φ115 mm, using φ64×3000 mm drill rods and a 3-inch DTH hammer.

Q2: What kind of engine and compressor does JC843 use?
A: It is powered by a 162kW Yuchai turbocharged diesel engine and features a two-stage air compressor delivering 15 m³/min at 1.8 MPa, suitable for continuous high-pressure DTH drilling.

Q3: Is JC843 suitable for hard rock conditions?
A: Yes, JC843 is designed for medium to hard rock formations, equipped with a high-torque Eaton 2K rotary motor (2200 N·m) and variable speed (0–100 rpm), ideal for rock with high compressive strength.

Q4: How is the feeding system configured?
A: It uses a chain-driven feed mechanism with a 3400 mm stroke and 1100 mm feed extension, capable of delivering up to 12 kN feeding force, ensuring stable and efficient push-pull operations.

Q5: What is the tramming speed and how mobile is the rig?
A: JC843 is mounted on a crawler chassis with dual-speed mobility: 3 km/h (fast) and 1.5 km/h (slow), allowing for reliable repositioning across various terrains.

Q6: Does it have dust control features?
A: Yes, it is equipped with a 12-core dry-type dust collector system that minimizes airborne particles and meets urban or enclosed jobsite environmental standards.

Q7: What kind of projects is JC843 commonly used for?
A: JC843 is widely used in quarry blasting, foundation anchoring, mining operations, water well drilling, and geothermal exploration, especially where medium drilling depth and high air pressure are required.

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