05A104 - SST Core Cut Annular Cutter, 1-1/4 in. x 1 in. Universal Shank

Advanced Tribology for Precision Drilling

The Walter SST Core Cut Annular Cutter (SKU: 05A104) represents a significant leap forward in hole-making technology for industrial applications. Engineered with a diameter of 1-1/4 inches and a cutting depth of 1 inch, this tool is specifically designed to address the common challenges associated with drilling hard and abrasive metals. The defining feature of this series is the proprietary SST (Super Surface Treatment), a specialized bronze coating that alters the tribological properties of the cutter's surface. By significantly reducing the coefficient of friction between the tool and the workpiece, the SST coating minimizes heat generation—the primary cause of tool failure and work hardening in materials like stainless steel.

Beyond its surface treatment, the geometry of the 05A104 is optimized for high-efficiency material removal. The cutter features fully ground, extra-large flutes that facilitate rapid chip evacuation. In deep hole drilling, chip packing can lead to catastrophic tool breakage; the SST Core Cut's design ensures that swarf is ejected smoothly, maintaining a clear cutting path. The modern tooth design is precision-ground to eliminate porosity during the cut, resulting in a hole finish that is virtually burr-free and requires little to no post-drilling deburring operations. This level of precision is critical for structural engineers and fabricators who require tight tolerances for bolted connections.

Compatibility is a key consideration in the design of the SST Core Cut. It utilizes a universal shank system, making it compatible with a wide array of magnetic drilling units and stationary drill presses without the need for specialized adapters. This versatility allows maintenance teams and fabrication shops to standardize their tooling inventory. Whether working on aluminum, mild steel, or high-tensile structural steel, the Walter 05A104 delivers consistent, reliable performance, reducing cycle times and lowering the cost per hole through extended tool longevity.