Strovolt Premium TCT Annular Core Cutter 49mm Diameter x 50mm Depth Tungsten Carbide Tipped Mag Drill Bit Heavy Duty Structural Steel & Inox Cutter
Product Overview
The Strovolt STRO784950 is a premium-grade Tungsten Carbide Tipped (TCT) Annular Core Cutter engineered for extreme performance in heavy fabrication and industrial environments. Designed with a robust 49mm cutting diameter and an extended 50mm cutting depth, this professional core drill bit is purpose-built to bore large, precise holes in the toughest industrial metals—including Stainless Steel, Cast Iron, Hardened Steel, and High-Tensile Structural Steel—significantly faster and more efficiently than traditional twist drills.
Conventional methods for creating a 49mm hole typically require a massive radial arm drill, multiple step-drilling processes, and excessive horsepower. The Strovolt TCT Series revolutionizes this workflow by cutting only the periphery of the hole and ejecting a solid slug. This advanced annular geometry reduces power consumption by up to 60%, minimizes wear on your magnetic drilling machine, and delivers a burr-free, reamer-quality finish in a single pass. Featuring Advanced Micro-Grain Carbide Tips with a Rockwell Hardness of HRC 90+, the STRO784950 offers exceptional thermal stability, maintaining its cutting edge even under the high heat generated by large-diameter drilling.
One of the key advantages of the STRO784950 is its Triple-Edge Ply Geometry, which utilizes a sophisticated 3-ply tooth arrangement (inner, middle, and outer cutting edges) to evenly distribute chip load. This innovative design reduces cutting resistance, prevents chatter, and ensures smooth penetration in large 49mm bores. Additionally, the precision-ground 19.05mm (3/4") Weldon Shank (2-flat) ensures a rigid, slip-free connection with all major magnetic drill brands, including Alfra, Hougen, Evolution, Nitto, Euroboor, and Rotabroach.
Engineered for high-speed performance, the STRO784950 is capable of running at higher surface speeds (RPM) than conventional High-Speed Steel (HSS) cutters, reducing cycle times and boosting production output. The self-centering design starts cuts immediately without "walking," eliminating the need for center punching or pilot drilling, further streamlining the drilling process.
The Strovolt 49mm x 50mm TCT Cutter is a critical tool for various heavy industry, construction, and maintenance sectors. In structural steel fabrication, it is essential for creating 49mm holes for large-diameter anchor bolts, custom fitments, and tie-rods in heavy I-beams, H-beams, and bridge girders. It is also ideal for drilling bolt patterns in high-pressure flanges and thick-walled pipe vessels in Oil & Gas refineries, as well as line-boring pivot points and mounting holes on mining excavators, cranes, earthmovers, and railway chassis. Additionally, this cutter effortlessly machines through difficult materials like Stainless Steel (INOX), Hardox (Wear Plate), and Railway Track, making it indispensable for hard alloy machining applications. It is also widely used in the fabrication of wind turbine towers and hydroelectric plant components in the power generation industry.
The STRO784950 features a robust material combination, with cutting tips made from premium K-Grade Micro-Grain Tungsten Carbide (Sandvik or equivalent), selected for their optimal balance of extreme hardness and impact toughness to resist chipping. The body is constructed from high-strength Heat-Treated Alloy Tool Steel, engineered to absorb high torsional stress and prevent shank breakage under heavy load. State-of-the-art induction brazing using a high-strength silver alloy ensures the carbide tips remain secure even under extreme thermal shock and vibration. The polished alloy finish, combined with specialized flute geometry, assists in rapid chip evacuation, further enhancing the cutter's performance and longevity. Compatible with internal cooling systems (via pilot pin) to flush chips and extend tool life, the STRO784950 is designed to deliver superior performance, durability, and efficiency in the most demanding industrial applications.
