05A403 - Walter SST Core Cut Annular Cutter 1-3/16" x 2" Universal Shank

Precision Drilling with Walter SST Technology

The Walter 05A403 SST Core Cut Annular Cutter represents the pinnacle of drilling efficiency for industrial maintenance and fabrication. Designed with a diameter of 1-3/16 inches and a cutting depth of 2 inches, this tool is engineered to tackle the toughest materials found in MRO environments, including stainless steel, structural steel, and aluminum. What sets the SST (Super Speed Tip) series apart is the advanced surface treatment technology employed during manufacturing. Walter uses a proprietary process to eliminate microscopic porosity in the cutter's metal, resulting in a flawlessly smooth finish that significantly enhances structural integrity.

Friction is the enemy of tool life, particularly in heavy-duty drilling applications. To combat this, the 05A403 features a special bronze SST surface treatment. This coating acts as a thermal barrier and lubricant, drastically reducing friction between the tool and the workpiece. The result is lower heat generation, which preserves the temper of the cutting edges and extends the overall lifespan of the cutter. For the operator, this translates to faster drilling times and fewer tool changes, optimizing workflow in high-volume production settings.

Chip evacuation is critical when drilling deep holes, and the Walter SST Core Cut excels in this area. It is manufactured with fully ground, extra-large flutes that channel swarf away from the cutting zone efficiently. This prevents clogging and binding, ensuring a clean, burr-free hole every time. The modern tooth design and cutter geometry are specifically tuned to bite into the material aggressively yet smoothly, reducing the horsepower required from the magnetic drill unit. Equipped with a universal shank, this cutter is compatible with a wide range of magnetic drilling machines and stationary presses, making it a versatile addition to any industrial tool crib.

Whether you are fabricating structural beams or performing precision repairs on stainless steel equipment, the Walter 05A403 delivers consistent, high-quality performance. Its robust construction and advanced metallurgical properties ensure that it remains sharp and effective long after standard cutters have dulled.