Sgs Pro 15903 SN-4 Inverted Cone Carbide Bur 1/2 in

Product Description

The SGS PRO 15903 is a double cut tungsten carbide inverted cone rotary bur conforming to industry specification SN-4. With a 1/2 inch cutting diameter and a 2.25 inch overall length, this bur is designed for aggressive material removal on tough metals including steel, hardened steel, stainless steel, cast iron, titanium, nickel, copper, and copper alloys. The 1/4 inch shank fits standard die grinders and rotary tool chucks. It is rated to 28,000 RPM and features an uncoated tungsten carbide head with a 28-degree included angle. Machinists, tool and die workers, and fabricators use this bur for deburring, shaping, and material removal in hard-to-reach geometry.

This bur is suited for applications requiring precise contouring in recessed or angled surfaces where an inverted cone profile provides clearance that straight or cylindrical heads cannot. Common uses include weld cleanup, port work, mold and die finishing, and deburring of drilled or countersunk features. The double cut tooth pattern produces faster stock removal with less operator fatigue compared to single cut configurations, making it practical for extended use in production or repair shop environments.

Key Features

• SN-4 industry specification inverted cone head profile
• Double cut tooth pattern for fast, efficient stock removal
• Tungsten carbide construction handles hardened steel, stainless, cast iron, titanium, nickel, copper, and copper alloys
• 28,000 RPM maximum speed rating for use with standard die grinders
• 1/4 inch shank diameter fits common rotary tool and die grinder collets
• 28-degree included angle for precise work in angled or recessed features

Compatibility

Designed for use with standard die grinders and rotary tools accepting a 1/4 inch shank collet. Suitable for ferrous and non-ferrous metal applications as listed in the material application data.

Installation Notes

A licensed machinist or experienced fabricator should verify collet size and condition before mounting this bur. Ensure the die grinder or rotary tool is powered off and unplugged before inserting or removing the bur. Do not exceed the rated 28,000 RPM maximum speed. Always wear appropriate personal protective equipment including eye protection and gloves when operating rotary cutting tools.