Featured Underground Mining Rock Drills & Breakers
Heavy-duty, precision pneumatic tools built for high penetration rates and durable tunnel drifting
Industrial State & Engineering Trends in Underground Mining
Technological transformation, ergonomics, and structural mechanics in modern jackleg drilling
The jackleg rock drill remains the backbone of narrow-vein underground mining, sublevel caving, cut-and-fill stoping, and primary shaft sinking across major mining belts worldwide. While hydraulic mechanized drill rigs dominate large-diameter haulage ramps, pneumatic jackleg drills retain unmatched strategic advantages in restricted stopes, steeply dipping veins, and variable ground conditions where heavy mobile equipment cannot physically mobilize or operate economically.
Narrow-Vein Agility
Optimized power-to-weight ratio allows single-operator deployment in drifts as small as 1.8m x 1.8m, ensuring minimal ore dilution and maximum grade extraction in precious metal reserves.
Alloy Metallurgy & Longevity
Constructed with carburized, drop-forged alloy steel cylinders and specialized heat-treated rifle bars, ensuring high resistance to abrasive underground slurry, acidic mine waters, and intense thermal cycles.
Dynamic Pneumatic Thrust
Multi-stage telescopic air legs deliver smooth, balanced thrust along the drill axis, preventing bit sticking, dampening excessive operator kickback, and stabilizing percussion at high rock depths.
Deep Engineering Evolution in Subterranean Excavation
In contemporary underground mining operations, productivity depends heavily on the drill's percussive index and air consumption efficiency. Modern jackleg rock drills are calibrated to sustain penetration rates exceeding 350 to 450 mm per minute in medium-hard granite and quartzite formations, operating under 5 to 7 bar pneumatic working pressure. High-frequency valving systems deliver crisp blow cycles, driving internal pistons against the drill steel shank with reduced energy dissipation. Simultaneously, high-velocity internal flushing air-and-water channels clear pulverized rock cuttings instantly, preventing regrinding and dramatically extending drill steel and tungsten carbide bit service life.
Beyond face drilling, the modern underground jackleg rock drill fulfills vital support roles including pattern rock bolting, split-set insertion, spiling, and drainage hole installation. In geotechnical environments characterized by high rock burst potential or seismic shifts, the tactile feedback of a jackleg drill gives experienced miners immediate recognition of micro-fractures, rock hardness transitions, and void spaces—a life-saving empirical assessment automated machinery often obscures.
Corporate Profile & Advanced Manufacturing
Engineering excellence, precision machining, and enduring global partnerships since 2005
SHENLI is a premier global manufacturer and direct supplier of superior pneumatic equipment engineered for underground mining, heavy construction, tunneling, and high-impact industrial operations. Since 2005, the Shenli brand has stood at the cutting edge of industrial pneumatic performance, metallurgical integrity, and mechanical innovation.
Operating our own comprehensive manufacturing facility, SHENLI produces a complete portfolio of high-efficiency rock drills, pneumatic paving breakers, pusher legs, and matched components. Our tools deliver superior penetration metrics, rugged durability under aggressive underground ambient conditions, and competitive direct-factory economics. Supported by stringent ISO 9001:2015 quality frameworks and CE certification, our experienced engineers support your project from technical selection to lifecycle spare parts logistics.
Enterprise Mission & Guiding Culture
Corporate Culture:
More Attentive: Work collaboratively, pursue relentless technical refinement, and ensure zero-defect reliability across underground percussive equipment.
More Focused: Absolute dedication to rock drill durability and high-performance metallurgical processing.
More Thoughtful: Customer first, rapid responsiveness, and reliable lifetime parts delivery for critical mine production cycles.
Dare to Innovate: Keeping up with advancing mining methodologies, adapting high-efficiency flow dynamics, and setting global industry benchmarks.
Shenli strives to establish itself as a world-class rock drill provider, bringing sustainable mechanical value and robust extraction reliability to underground operations worldwide.
Factory Tour & Precision Manufacturing Workflow
Stringent production controls, computerized machining centers, and comprehensive physical testing
Industrial Fabrication Infrastructure
Raw Material Sourcing: All structural alloy steels are selected from certified domestic and international metallurgical foundries, guaranteeing defect-free structural grain and extreme impact fatigue resistance.
CNC Precision Processing: Our machining facilities utilize multi-axis CNC lathes and computerized milling centers, maintaining ultra-tight axial tolerances across cylinder bores, rifle nuts, and rotation pawls.
Controlled Heat Treatment: Critical components undergo carburizing, deep nitriding, volume quenching, and step-tempering in atmospheric sealed quench furnaces to build rock-hard wear exteriors combined with high ductile cores.
Micron-Level Grinding: Advanced cylindrical, internal diameter, and universal CNC grinding centers maintain operational clearances within 3 microns, ensuring superior pneumatic compression sealing.
Surface Treatment & Anti-Corrosion: Industrial electrostatic coating and protective anti-wear finishes protect equipment from acidic mine runoff and humid underground shaft atmospheres.
Quality Control Protocol & Assembly Benchmarks
Customer confidence is built upon our unyielding commitment to 'zero defect' manufacturing and verifiable assembly tolerances:
1. Full Spectrum Testing: Every individual rock drill is mounted on computerized test dynamometers to verify exact torque output, blows per minute (BPM), and CFM air consumption before clearance.
2. Traceable Documentation: Certified test certificates accompany each unit, verifying conformance to stringent engineering tolerances.
3. Standardized Quality Training: Continuous skills development ensures our specialized technical team operates in full accordance with ISO 9001:2015 continuous improvement frameworks.
International Quality Certifications & Intellectual Property
Fully compliant with European Union CE requirements and verified by ISO 9001:2015 standards
CE certification provides certified verification that our percussive breakers and jackleg drills satisfy rigorous European Economic Area health, mechanical safety, and environmental standards. Coupled with our ISO 9001:2015 Quality Management System continuously certified since 2015, Shenli tools assure global mine operators, engineering contractors, and procurement supervisors that our machinery fulfills the strictest industrial performance standards across every production lot.
Global Customer Collaborations & Project Validation
Trusted across demanding underground mines and infrastructure contracts across Europe, the Americas, and Asia
Dutch Underground Mining & Demolition Partner
Following comprehensive on-site inspections of our CNC milling lines, automated quench furnaces, and dynamometer testing cells, our Dutch engineering client finalized a custom procurement order of 500 specialized pneumatic units, initiating a long-term strategic equipment supply partnership.
United States Heavy Mining Equipment Distributor
US mining contractors visited our production facilities for rigorous technical and metallurgical negotiations. The partnership established direct-factory supply chains for heavy pneumatic drills and rapid-wear accessory sets across North American underground hard-rock operations.
Japanese Civil Tunneling & Mining Specialists
Japanese geotechnical clients evaluated our tight-tolerance grinding and machining lines. Pleased with the micro-finish standards, they initiated a joint engineering framework to co-optimize air flow circuits for ultra-demanding excavation environments.
Indian Ore Mining & Processing Enterprises
Representatives from major Indian mining operations performed in-depth audits of our ISO 9001 certified assembly lines, checking component interchangeability and wear testing. This led to ongoing annual supply contracts for high-impact pneumatic extraction tools.
Featured Model: TS11 High-Impact Pneumatic Breaker & Drill
Engineered for drift face trimming, ore breaking, and confined subterranean tunneling
TS11 Pneumatic Breaker Light Duty Pneumatic Breaker Mining Jack Hammer for Quarry Rock Breaking
The SHENLI TS11 is an industrial-grade light-duty pneumatic breaker engineered with an operational scope closely aligned with the heavy-duty TCD20. Specifically refined for underground mining stopes, quarry secondary fragmentation, and tunnel face clearing, it delivers stable high-frequency impact energy at lower air volume consumption.
To eliminate costly downtime in underground extraction sites, Shenli maintains an uninterrupted supply of 100% genuine replacement components—including hardened pistons, chisels, valve manifolds, return springs, retention latches, and internal sealing rings. Built with standardized metric dimensions, all spare parts are fully interchangeable with zero minimum order quantities, ensuring seamless site maintenance.
Comprehensive Technical Parameters: Pneumatic Breakers & Rock Drills
Review standard engineering specifications across our versatile heavy pneumatic tool series:
| Parameter / Model | TCA-7 | TCD-20 | TS11 | TPB-40 | TPB-60 | TPB-90 |
|---|---|---|---|---|---|---|
| Piston Diameter | 35 mm | 42.85 mm | 38 mm | 44 mm | 57.15 mm | 66.67 mm |
| Piston Stroke | 120 mm | 60 mm | 135 mm | 146 mm | 100 mm | 152 mm |
| Percussive Frequency | 1,250 BPM | 2,000 BPM | 1,630 BPM | 1,050 BPM | 1,400 BPM | 1,400 BPM |
| Net Weight (N.W) | 7.2 kg | 10.0 kg | 10.1 kg | 18.0 kg | 30.0 kg | 42.0 kg |
| Overall Length | 465 mm | 520 mm | 600 mm | 660 mm | 645 mm | 723 mm |
| Air Consumption | 1.0 m³/min | 1.1 m³/min | 19 L/s | 1.6 m³/min | 2.0 m³/min | 2.2 m³/min |
| Air Hose Diameter | 19 mm | 19 mm | Inlet 12 mm | 19 mm | 19 mm | 19 mm |
| Bit Head Shank Size | R26 × 80 | R26 × 80 | R22 × 82.5 | R25 × 108 | R32 × 152 | R32 × 152 |
Underground & Civil Engineering Application Scenarios
1. Underground Stopes & Narrow-Vein Mining: The ideal primary tool for driving pilot raises, breaking hung-up chutes, secondary reduction of oversized ore boulders, and trimming roof rock profiles prior to support arch installation.
2. Tunneling & Civil Subsurface Works: Specialized auxiliary trimming for drill-and-blast advancing faces, removing protruding rock bodies, shaping tunnel ditches, and carving utility niches in deep underground stations.
3. Open-Pit Quarry & Bench Dressing: Splitting massive granitic blocks, cleaning toe rocks, loose ore clearing, and secondary fracturing where mobile hydraulic rock breakers lack economical reach.
4. Infrastructure Reconstruction & Heavy Demolition: High-energy fracturing of thick reinforced concrete foundations, bridge pillar removal, roadbed sub-base cracking, and industrial furnace refractory demolition.
Complete Underground Mining Rock Drill & Pneumatic Line
Heavy-duty, site-tested machinery for professional underground excavation, demolition, and rock breaking
Need direct factory consultation or tailored underground rock drilling solutions?
