Pferd 21724723 Carbide Bur SF-5 Ball Nose Tree 1/2 Inch

Product Description

The PFERD 21724723 is a solid carbide rotary bur in the SF-5 Ball Nose Tree profile with a diamond cut tooth pattern. It is designed for precision material removal, deburring, and contour grinding in metalworking and fabrication applications. The 1/2-inch cutting diameter and 1-inch length of cut provide meaningful stock removal capacity, while the 1/4-inch shank is compatible with standard die grinders and flexible shaft tools. The diamond cut tooth geometry produces a finer finish compared to single or double cut, making it well suited for work on hard, difficult-to-machine alloys. Licensed machinists, toolmakers, and metal fabricators are the primary users of this bur type.

This bur is rated for use on a broad range of hard and high-strength materials, including bronze, case-hardened steels, cast steel, cobalt-based alloys, hard aluminum alloys, hardened and heat-treated steels over 370 HV (38 HRC), hard non-ferrous metals, high-temperature-resistant materials, and nickel-based alloys such as Inconel and Hastelloy. It is well suited for aerospace, tool-and-die, and heavy industrial maintenance environments where conventional carbon steel burs lose effectiveness quickly. The overall tool length of 2.75 inches allows reasonable reach into cavities and recesses without sacrificing rigidity.

Key Features

• SF-5 Ball Nose Tree profile for contouring, profiling, and cavity work in hard metals
• Diamond cut tooth pattern for finer surface finish and reduced chatter on tough alloys
• Solid carbide head construction for durability at elevated hardness levels up to and above 38 HRC
• 1/2-inch cutting diameter with 1-inch length of cut for efficient material removal
• 1/4-inch shank fits standard die grinders and rotary tool accessories
• Maximum rated speed of 24,000 RPM

Compatibility

Designed for use with die grinders, flexible shaft machines, and rotary tools accepting a 1/4-inch shank. Suitable for material applications including bronze, case-hardened steels, cast steel, cobalt-based alloys, hard aluminum alloys, hardened and heat-treated steels over 370 HV (38 HRC), hard non-ferrous metals, high-temperature-resistant materials, and nickel-based alloys such as Inconel and Hastelloy.

Installation Notes

Installation and use of rotary burs should be performed by qualified machinists or metalworking professionals familiar with rotary tool safety. Before mounting, ensure the die grinder or rotary tool is fully de-energized and the collet is clean and undamaged. Do not exceed the rated maximum speed of 24,000 RPM. Always wear appropriate eye protection and follow applicable ANSI and shop safety standards when operating high-speed rotary cutting tools.