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JRC300B DTH Pneumatic Mineral Sampling Reverse Circulation Crawler Drilling Rig

Hole Range

105-450mm

Hole Depth

300m

Recommend Chassis Type

Truck
Crawler
Trailer

The JRC300B reverse circulation drilling rig is a versatile, high-efficiency, environmentally friendly multi-track machine utilizing advanced gas lift reverse circulation technology. It effectively collects rock dust via a dust collector to minimize pollution and features a cyclone separator for slagging collection, making it ideal for geological sampling analysis. This rig excels in various compressed air ground hole drilling applications, with fully hydraulic systems for lifting, guide compensation, drill pipe handling, rotation, feed, legs, winch, and walking. It significantly reduces labor intensity while enhancing construction efficiency and quality, serving as the top choice for deep hole operations in exploration, wells, monitoring, and heat pump air-conditioning.

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Functions and Features

Main Components

Environmental Protection Features Integrated dust collector and cyclone separator effectively capture rock dust and slag, preventing pollution and enabling clean sampling for geological analysis.
Versatile Drilling Capabilities Supports a range of drilling angles (45-90°) and adjustable parameters like torque, speed, and pressure for optimal performance in diverse geological conditions.

Advanced Reverse Circulation Technology Employs dual-wall drill rods with inner tubes for continuous, contamination-free sample return, producing high-quality dry rock chips for precise mineral deposit location.
Fully Hydraulic Operation All systems, including rotation, feed, lifting, compensation, and walking, are hydraulically driven to reduce manual effort and improve operational efficiency.

Features Introduction

Product Description

The JRC300B DTH Pneumatic Mineral Sampling Reverse Circulation Crawler Drilling Rig is a high-efficiency, environmentally friendly drilling solution designed for geological exploration and mineral sampling. With a drilling diameter range of 105–450 mm and a maximum depth of 300 m, it utilizes advanced gas-lift reverse circulation technology to deliver clean, uncontaminated samples for accurate geological analysis.
Equipped with a fully hydraulic system covering rotation, feeding, lifting, compensation, pipe handling, winch, legs, and crawler walking, the JRC300B significantly reduces manual labor while improving drilling efficiency and operational safety. Integrated dust collectors and cyclone separators effectively capture rock dust and slag, minimizing environmental impact. Its crawler-mounted design, strong adaptability to complex terrain, and stable drilling performance make it an ideal choice for mineral prospecting, well drilling, monitoring wells, and ground source heat pump projects.

Advanced Reverse Circulation Sampling

Dual-wall drill rods with inner tubes enable continuous, contamination-free sample return, producing high-quality dry rock chips for precise mineral evaluation.

Environmental Protection System

The integrated dust collector and cyclone separator efficiently capture rock dust and slag, reducing pollution and ensuring clean, reliable geological samples.

Fully Hydraulic & Intelligent Control

All major operations—including rotation, feeding, lifting, compensation, and walking—are hydraulically driven, improving efficiency while reducing operator workload.

Mobility, Stability & Safety

Self-walking crawler system with hydraulic jacks ensures stable drilling on rugged terrain, supported by comprehensive safety features such as remote control, emergency stop, and protective structures.

Product Specifications

Specification	Unit	JRC300B
Geology drilled		All kinds
Drilling Type
Drill system and operation		Hydraulic
Max. Hole Diameter	mm	105-450
Max. Hole Depth	m	300
RC Drill pipe diameter	mm	102/114/127
Drill pipe length	mm	6000
Rotation Unit
Rotation Torque (Eaton Motor)	N.M	11800-5900
Rotation Speed	rpm	0-74-148
Mast
Compensation distance	mm	1500
Drilling Angle range	°	45-90
Mast total Length	mm	11000
Feeding System
Feeding Structure		Cylinder & Chain
Max. Feed Speed	m/min	0-32
Max. Lifting Speed	m/min	22
Feed Stroke	mm	7600
Pull back Capacity	T	30
Push down Capacity	T	0-15
Winch
Lifting force of tool winch	T	1.5
Rope Diameter	mm	Φ10
Swing angle		Cylinder ±40°
Auxiliary winch	T	0.5
Rope Diameter	mm	6
Slips and breakout
Slipstable max. Opening	mm	240
Cooling system
Engine system		Engine fan with radiator
Hydraulic System		Hydraulic Driven Cooler
Pipe Rack
Capacity (102×6m RC Drill pipe)		36 Pcs (216m)
Power Unit
Diesel Engine Model		CUMMINS (Euro-2)
Rated Horse power	kW	239
Electrical System	Volt	24
Fuel Tank Capacity	L	200
Hydraulic System
Pump Model		Open quantitative system L8V-107-107
Pump type		Quantitative Piston pump
Sample Collect System
Blow down valve		Standard Install
Cyclone type		Three layer cyclone & sampler
Hammer Oil tank
Tank Capacity	L	16
Control Hydraulic Jacks		Needle Valve Regulate
Max. Extension x2 front Jacks		90°
Max. Extension x2 Rear Jacks		N/A
Stroke of x2 front Jacks	mm	600
Stroke of x2 rear Jacks	mm	600
Control System		Remote control & valve control
Hydraulic type Clamp		3 layers
Safety alert System
Sample hose connection		With steel protection net
Emergency Stop button		1 front, 1 back
Fire extinguisher	Pcs	2
Gradeability	°	22°
Walking Speed	Km/h	1.5 -- 2.5
Tramming motor capacity		TL60
Footboard		Standard 2pcs
Seat		Standard
Reverse remind		Standard
Lifting point		Standard
Rod change camera		Standard
Dimension
Net Weight	Ton	34
Shipping Dimension	mm	12000 × 2900 × 3000
Ground Clearance	mm	320
Remote Control
Main pump	constant power load sensitive variable piston pump (P=32.5MPa)
Power mechanism	engine-coupling-main oil pump
Main rotation motor	plunger high-pressure variable hydraulic motor (P=32.5MPa)
Main control valve	electro-hydraulic pilot load sensitive directional valve - electric control valve, remote control

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OEM Customization

Drilling Diameter

Depth

Power Type

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