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Below the Rock, Above the Rest — KINGS ROCK TOOLS Shanks
Release time:
Jun 21,2026
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KINGS ROCK TOOLS Shanks: Engineered for the Most Demanding Rock Drilling Conditions
In mining, tunnel boring, and hydroelectric engineering, the shank is the critical component that connects the rock drill to the drill rod. It directly withstands the impact energy and torque from the rock drill, efficiently transmitting power to the drill bit. As the "power throat" of the drilling system, its quality directly impacts drilling speed, equipment service life, and overall operational costs.
KINGS ROCK TOOLS: Two Decades of Craftsmanship, Forging Excellence
As a manufacturer specializing in top-hammer drilling tools and tapered drill tools, KINGS ROCK TOOLS has been deeply rooted in the rock drilling industry for over twenty years. We remain steadfast in our commitment to quality, innovation, and customer satisfaction. Understanding the critical role shanks play in harsh working conditions, we enforce stringent standards from raw material selection through every stage of manufacturing. Backed by a professional team of 400, including 30 quality control specialists and 10 R&D engineers, we ensure every shank delivers superior material toughness, enhanced wear resistance, and consistently stable quality.
Comprehensive Guide to Shanks: Types and Selection
Proper selection is the foundation for achieving optimal shank performance. KINGS ROCK TOOLS offers a diverse range of shank products compatible with major global rock drill brands, including Atlas Copco, Sandvik, Furukawa, and Montabert.
Common shank types and their applications include:
Shoulder-type (Hexagonal): Featuring a hexagonal cross-section with inscribed circle diameters typically of 22mm and 25mm, and lengths of 108mm and 159mm. Primarily used for light-duty rock drills.
Spline-type: Used for heavy-duty external-rotation guide-type rock drills with high torque requirements, typically with diameters of 38mm and above.
When selecting a shank, pay close attention to the following key parameters:
Compatible Rock Drill: Clearly identify your rock drill's brand and model—this is the foundation of proper selection.
Thread Specification: KINGS ROCK TOOLS offers a wide range of international standard threads, including R25, R28, R32, R38, T38, T45, T51, and GT60.
Length and Diameter: Customizable to meet specific job requirements. Standard lengths range from 245mm to 850mm, and diameters from 32mm to 80mm.
Shank Adaptability and Performance Advantages
KINGS ROCK TOOLS shanks are manufactured from high-quality alloy structural steel and undergo integral case-hardening treatment, ensuring high toughness and resistance to plastic deformation. Our dedicated CNC machining equipment and precision straightening processes guarantee flat, smooth shank end faces with precise fitment to the rock drill chuck (clearance no greater than 0.5mm), significantly enhancing energy transfer efficiency. Through optimized heat treatment processes, we control shank hardness within the HRC 55–60 ideal range, ensuring extended service life while preventing damage to the piston from excessive hardness. Whether in deep South African mines or South American tunnel projects, KINGS ROCK TOOLS products have earned widespread trust for their durability and reliability.
Professional Shank Maintenance Recommendations
To ensure long-term, stable operation and extend service life, scientific maintenance is essential:
Regular Thread Inspection: Thread engagement surfaces are stress concentration zones. Regularly inspect threads for wear or chipping, and keep them clean.
Proper Lubrication: Use high-quality grease for continuous lubrication of the shank to effectively reduce friction and prevent overheating.
Proper Handling and Storage: Avoid improper storage practices, such as exposing shanks to intense heat followed by rapid cooling, which can cause micro-cracking. Store in a dry environment with minimal temperature fluctuations.
Choose KINGS ROCK TOOLS – Choose Peace of Mind and Efficiency
As a professional manufacturer with a team of 200–500 employees and our products exported overseas, KINGS ROCK TOOLS is not just a reliable supplier but a trusted partner. We support OEM/ODM customization and offer sample testing to ensure our products perform exceptionally in your specific working conditions.
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