Pferd 21823191 Carbide Bur Ball Nose Cylinder 1/8 in

Product Description

The PFERD 21823191 is a solid carbide rotary abrasive bur designed for precision material removal in metalworking, fabrication, and tool-and-die applications. It features a ball nose cylinder head shape with a single-cut tooth style, making it well suited for contouring, deburring, and finishing operations in confined areas. The cutting diameter is 0.125 inches and the shank diameter is 1/8 inch, with an overall length of 1.5 inches and a length of cut of 0.5 inches. Rated for a maximum of 95,000 RPM, this bur is built for use with high-speed die grinders and rotary tools where controlled stock removal is required.

This bur is appropriate for use on ferrous and non-ferrous metals, castings, and hard materials in both shop and field environments. The single-cut configuration produces a smoother finish with lower chip load compared to double-cut styles, making it a preferred choice when surface quality matters alongside material removal. Typical users include machinists, welders, pipefitters, and tool-and-die technicians working on deburring, port matching, weld blending, and mold finishing tasks.

Key Features

• Ball nose cylinder head shape for contouring and finishing in recessed or curved surfaces
• Single-cut tooth style for smooth finish with controlled material removal
• Carbide construction for durability on hard metals and abrasive materials
• 1/8 inch shank diameter fits standard die grinder and rotary tool collets
• Rated to 95,000 RPM for compatibility with high-speed rotary tools
• Uncoated carbide head — no coating to chip or delaminate under heavy use

Compatibility

Designed as a direct-fit replacement or standard selection for die grinders and rotary tools accepting a 1/8 inch collet, conforming to industry specification SC-42.

Installation Notes

Installation is performed by machinists or trade professionals using die grinders or rotary tools with a compatible 1/8 inch collet. Always power down and disconnect the tool from its power source before inserting or removing the bur. Inspect the collet and shank for wear or runout before use, and do not exceed the rated maximum RPM of 95,000. Eye protection and appropriate PPE should be worn at all times during operation per applicable shop safety standards.