Reduced Shank Cobalt Drill Bit for D/ACO Series

Crafted with heat-resistant cobalt and meticulously ground to a robust 135° split point, these tools are designed for demanding applications. Their common flute and overall length minimize the need for adjustments during tool changes, while the precision grinding ensures a high degree of concentricity between the shank and body diameter. This makes them ideal for drilling in tough, high-tensile-strength materials, expanding the size range capacity of a portable drill chuck.

These cobalt steel tools share similarities with high-speed steel, but the increased cobalt content enhances their performance when cutting harder metals such as stainless steel or nickel alloys. The gold oxide surface treatment is a thinner oxide layer compared to the more common black oxide, yet it provides comparable performance to uncoated tools.

The round shanks on these tools allow for use with a wide variety of toolholding systems, offering versatility in different applications. When operated in a counterclockwise direction (right-hand cut), the spiral fluted design effectively evacuates chips up and out of the cut, reducing the risk of clogging.

Manufactured to the exacting standards of the National Aerospace standard 907, these tools are engineered to deliver consistent and reliable performance, even in the most demanding environments. The precision ground finish ensures a high degree of concentricity between the shank and body diameter, making them suitable for drilling in low and medium tensile strength materials with precision and accuracy.

The combination of heat-resistant cobalt, the robust 135° split point, and the optimized flute and overall length design allows these tools to excel in a wide range of applications, from tough, high-tensile-strength materials to more moderate strength workpieces. The versatility and performance of these cobalt steel tools make them a valuable asset in any workshop or industrial setting.

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