Cratex B121A80CXI 1/8 Mounted Point Ball 80 Grit

Product Description

The CRATEX B121A80CXI 1/8 is a rubber-bonded aluminum oxide mounted abrasive point designed for precision grinding, deburring, and surface finishing on metal and hard materials. Formed in a ball shape (Point Shape Code B121), it spins at up to 21,000 RPM on a 0.125-inch diameter shank, making it compatible with standard die grinders, rotary tools, and flex-shaft machines. At 80 grit and a medium-to-hard density, it removes material efficiently while leaving a consistent finish. Shank length is 0.125 inches and head thickness is 0.5 inches. Licensed tradespeople and tool-room machinists use these points for detail work in confined areas.

This mounted point is suited for use in metal fabrication shops, tooling rooms, mold and die work, and general maintenance grinding. Its ball profile allows access to contoured surfaces, recesses, and curved profiles that flat or cylindrical points cannot reach. The aluminum oxide abrasive compound handles ferrous metals, cast iron, hardened steel, and similar hard substrates. It is sold individually and is appropriate for both production and maintenance applications where controlled stock removal is required.

Key Features

• Ball shape (B121) reaches contoured recesses and curved interior surfaces
• 80 grit aluminum oxide abrasive for medium stock removal and consistent finish
• Rated to 21,000 RPM for use in die grinders and rotary tools
• Hard density bond provides durability and shape retention during use
• 0.125-inch shank fits standard collets on most rotary and die grinder tools
• Compact geometry: 0.5-inch head thickness on 0.125-inch shank length

Compatibility

Designed as a standard OEM-style replacement mounted abrasive point for use with rotary tools, die grinders, and flex-shaft machines accepting a 0.125-inch collet or chuck.

Installation Notes

Installation is performed by trade machinists, tool grinders, or maintenance technicians using standard die grinders or rotary tools. Before mounting, confirm the tool collet size matches the 0.125-inch shank diameter and that the tool spindle speed does not exceed 21,000 RPM. Always power down and unplug the tool before inserting or removing mounted points. Wear appropriate eye protection and ensure the workpiece is secured before beginning grinding operations.