Norton 66260392629 Diamond Mounted Point Ball 200/230 Grit

Product Description

The NORTON 66260392629 is an electroplated diamond mounted point in the Series 4000 line, designed for precision grinding, shaping, and finishing of hard materials including carbide, ceramics, glass, and hardened steel. The point features a ball-shaped head with a 0.156-inch head diameter and 0.25-inch head thickness, mounted on a 0.25-inch diameter shank with a 3-inch overall length. At 200/230 grit, it falls in the fine grade range, making it well-suited for finishing passes and detail work where surface quality matters. It weighs 0.3 pounds and is sold individually.

This mounted point is used in die grinder and rotary tool applications across toolroom, maintenance, and production environments. It is appropriate for hand-held or bench-mounted spindle work on molds, dies, ports, and contoured surfaces. The ball shape allows access to curved recesses and concave profiles that flat or cylindrical points cannot reach. It is commonly used by machinists, tool-and-die workers, and maintenance technicians working with hard or brittle workpieces.

Key Features

• Electroplated diamond abrasive for consistent cut on hard materials including carbide and ceramics
• Ball point shape (Shape Code 4156FD) for grinding curved recesses and concave surfaces
• 200/230 grit fine grade for finishing and light stock removal
• 0.25-inch shank diameter fits standard die grinder collets
• 3-inch overall length provides reach into restricted work areas
• Single-piece packaging with no minimum order beyond one unit

Compatibility

Designed to fit die grinders and rotary tools accepting a 0.25-inch shank. Suitable for use on carbide, ceramics, glass, stone, and hardened steel workpieces.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard die grinder with a 0.25-inch collet. Inspect the mounted point for cracks or loose bonding before mounting, and never exceed the rated RPM marked on the point or packaging. Secure the shank fully in the collet before operation and ensure the workpiece is properly fixtured. Always wear appropriate eye protection and follow ANSI B7.1 guidelines for abrasive tool use.