Norton 61463624392 Mounted Point 60 Grit Ball A21

Product Description

The NORTON 61463624392 is an aluminum oxide mounted point designed for precision grinding, deburring, and surface finishing in metalworking applications. Formed in a ball shape (A21 point shape code), this mounted point features a vitrified bond and medium-grade, 60-grit abrasive that removes material efficiently while leaving a consistent finish. The 1/4-inch shank fits standard die grinders, rotary tools, and spindle-mounted setups. At a rated maximum of 35,510 RPM, it handles high-speed tool operation without sacrificing control. Weighing under a tenth of a pound, it adds minimal mass to the tool. Machinists, tool-and-die workers, weld finishers, and maintenance techs are the typical end users for this type of abrasive accessory.

This mounted point is suited for internal grinding, cavity work, port matching, weld bead blending, and deburring of ferrous metals where a ball-shaped abrasive head is required to reach confined or contoured surfaces. The A21 ball profile is a standard configuration used in both production shop environments and maintenance-repair operations. It is sold individually but requires a minimum order of 5 units.

Key Features

• A21 ball point shape for grinding internal contours, cavities, and curved surfaces
• 60-grit aluminum oxide abrasive provides medium stock removal on ferrous metals
• Vitrified bond for consistent grain exposure and cool cutting action
• 1/4-inch shank diameter fits standard die grinders and rotary tool chucks
• Rated to 35,510 RPM for use with high-speed rotary tools
• Compact 1-inch head thickness for precise control in tight areas

Compatibility

Designed for use with die grinders and rotary tools accepting a 1/4-inch shank. Suitable for grinding and finishing ferrous metals in standard shop and maintenance applications.

Installation Notes

Mounted points must be installed in a collet or chuck rated for the shank diameter and capable of achieving the required RPM safely. Always verify the tool spindle speed does not exceed the 35,510 RPM rating marked on this abrasive before operation. Inspect the mounted point for cracks or chips before each use and discard any damaged unit immediately. Operators should wear appropriate eye protection and follow ANSI B11 and OSHA abrasive wheel safety guidelines during use.