7FAL116 - SF-1NF Aluminum Cut Carbide Bur 1/4 Shank

Precision SF-1NF Carbide Bur for Non-Ferrous Applications

The Magnum Carb SF-1NF Solid Carbide Bur is a high-performance rotary cutting tool specifically engineered for the machining and finishing of aluminum and other non-ferrous metals. Manufactured in the USA from premium Tungsten Carbide, this tool exhibits exceptional hardness and wear resistance, maintaining its cutting edge significantly longer than High-Speed Steel (HSS) alternatives. The "SF" designation indicates a Round Tree shape, also known as a pointed nose tree, which is particularly effective for contouring, reaching into angled areas, and blending radii.

A critical feature of this bur is its "Aluminum Cut" geometry. Unlike standard double-cut or single-cut burs designed for steel, this tool features deep, wide flutes with a high helix angle. This aggressive design is essential for processing soft, ductile materials like aluminum, magnesium, and plastics, which have a tendency to "load" or clog standard flute configurations. By facilitating rapid chip evacuation, the Aluminum Cut prevents the material from welding to the cutting edges, thereby reducing heat generation and ensuring a smooth, consistent surface finish without the need for frequent cleaning or pauses.

The tool features a standard 1/4-inch shank, making it compatible with the vast majority of pneumatic and electric die grinders used in industrial settings. The "Bright" finish indicates that the carbide is uncoated, relying on the natural hardness and lubricity of the substrate to perform. This is often preferred for aluminum applications where coatings can sometimes alter the friction coefficient unfavorably. Whether used for heavy stock removal, deburring machined parts, or preparing weld seams, the SF-1NF offers a balance of aggressive material removal and control.

Industrial professionals rely on Magnum Carb series burs for their consistency and concentricity. A balanced tool reduces vibration at high RPMs, which not only protects the operator from fatigue and potential injury (HAVS) but also extends the life of the die grinder's bearings. This bur is an essential component in the tool crib of any machine shop, foundry, or fabrication facility dealing with non-ferrous alloys.