05A101 - Walter SST Core Cut Annular Cutter 1-1/16 Inch x 1 Inch Depth

Technical Overview: Walter SST Corecut Annular Cutter

The Walter 05A101 is a high-performance 1-1/16" diameter annular cutter designed for industrial drilling applications requiring precision and speed. Part of the renowned SST (Super Speed Tip) Corecut series, this tool is engineered to address common challenges in metal fabrication, such as heat buildup, chip clogging, and premature tool wear. The cutter features a 1-inch depth of cut, making it suitable for drilling through plate steel, structural beams, and pipe walls.

At the core of its performance is the proprietary bronze SST surface treatment. This advanced coating technology serves a dual purpose: it eliminates microscopic porosity on the tool's surface to prevent material adhesion, and it significantly lowers the coefficient of friction during operation. This is particularly critical when drilling stainless steel, where heat generation can lead to work hardening of the workpiece. The reduction in friction allows the cutter to operate at optimal speeds while maintaining a cooler cutting edge, thereby extending the tool's service life.

Mechanically, the 05A101 utilizes a sophisticated tooth geometry combined with fully ground, extra-large flutes. This design facilitates rapid and efficient material evacuation, preventing the packing of chips inside the hole—a common cause of cutter breakage. The universal shank design ensures broad compatibility, fitting securely into standard Weldon shanks as well as other quick-change systems found on magnetic drilling units. This versatility makes it an essential component for MRO operations and fabrication shops handling diverse machinery.

The cutter is manufactured with strict tolerances to ensure hole accuracy. Unlike twist drills that remove all material within the hole, this annular cutter removes only a periphery ring, ejecting a solid slug. This method requires less horsepower and thrust, resulting in less wear on the drilling machine and faster penetration rates.