CS Unitec 9-1-2198 C TCT 6-1/4" 9-Series Annular Cutter Product Guide

The CS Unitec 9-1-2198 C TCT 6-1/4" 9-Series Annular Cutter is a precision cutting tool designed for core drilling applications in metalworking. It addresses the common challenge of efficiently creating clean, round holes in metal materials where standard twist drills may be slower or generate excessive heat and wear.

This type of annular cutter is commonly used on magnetic drilling machines, industrial drill presses, and other portable or stationary metal drilling setups. Its tungsten carbide tips enhance durability and allow it to cut through hard metals with less frequent sharpening or replacement. Users typically select this tool for drilling larger diameter holes quickly while maintaining a high-quality finish, minimizing burrs and reducing the metal removal volume compared to traditional drills.

Where This Is Used

• Metal fabrication shops and industrial manufacturing environments
• Construction sites requiring metal hole-making, such as steel beams or structural components
• Maintenance and repair operations performing retrofit or modification drilling on existing metal assemblies

Key Details

Selection Notes

From a selection standpoint, confirm the annular cutter diameter matches the hole size needed for the project, and verify the compatibility of the cutter shank with the available drilling machine. The tungsten carbide tipped design is suitable for cutting structural steel and similar metals, so specify this cutter for jobs demanding longer tool life and high precision. Consider the requirement for cutting fluids to maintain tool and workpiece temperature and to extend bit life. The cutter’s tooth design and tip material facilitate faster cutting speeds than standard drills but will need machine speeds and feeds to be set accordingly.

Setup Notes

When setting up this annular cutter, ensure the drilling machine is securely mounted, particularly if using a magnetic base drill, to prevent movement during cutting. Check the arbor or chuck for secure bit retention, and verify that the machine’s feed mechanism is functioning smoothly for consistent pressure. Maintain adequate flow of cutting fluid or coolant to reduce heat and assist chip evacuation. After use, clean the cutter of metal debris to preserve cutting edges and inspect for wear before subsequent jobs. Correct setup and maintenance extend the performance and reliability of the annular cutter in demanding metal drilling operations.