TCT Annular Cutter

TCT Annular Cutters for Metal Hole Drilling

Persistools TCT annular cutters are designed for efficient through-hole drilling in steel plates, structural steel, stainless steel, and other metal workpieces.

Unlike conventional twist drills that remove material across the entire hole diameter, annular cutters machine only the circumference of the hole and leave a solid slug in the center. This reduces the amount of material being cut and makes annular cutters particularly suitable for larger-diameter holes and thick metal plates.

The cutting edges use brazed tungsten carbide tips, providing good hardness and wear resistance while maintaining a practical cost for industrial hole-making applications. TCT annular cutters are particularly useful when drilling harder materials or producing larger holes repeatedly.

A broad range of diameters and cutting depths can be supplied for common magnetic drilling and workshop applications.

Typical applications include:

• Structural steel fabrication
• Steel plate drilling
• Machinery manufacturing
• Bridge and construction steelwork
• Railway and heavy equipment manufacturing
• Stainless steel fabrication
• Large-diameter through-hole drilling
• On-site magnetic drilling

Four Common Shank Systems

Persistools TCT annular cutters can be supplied with several common connection systems to match different magnetic drilling machines:

• Weldon Shank
• Universal / Nitto Shank
• Threaded Shank
• Fein Shank

These shank systems cover many commonly used magnetic drilling machine configurations.

Special Cutters for Difficult Materials

For standard structural steel, conventional TCT annular cutter geometry provides a practical balance between cutting efficiency, tool life, and cost.

However, difficult-to-machine materials may require a different approach.

For applications involving stainless steels, nickel-containing alloys, heat-resistant alloys, and other demanding materials, cutter geometry, carbide grade, tooth design, and other parameters can be adjusted according to the actual workpiece material and drilling conditions.

Instead of forcing one standard cutter design to cover every material, special-purpose annular cutters can be developed where higher heat resistance or improved cutting stability is required.