The Pferd diamond-cut carbide bur has a chromium nitride (CrN) coated finish, a tree shape with a radius end, and a 1/4" shank diameter, and is for use on stainless steel and heat-resistant metal such as nickel- and cobalt-based alloys. Pferd’s CrN HICOAT HC-HT coated finish provides good hardness for wear resistance and protects against chemical breakdown, extending tool life in high-temperature applications. The standard diamond-cut type produces powder-like chips and provides better operator control than single- or double-cut burs when used on recommended material. The bur has a tree shape with a radius end, also known as shape F, which is suitable for machining narrow, hard-to-reach contoured surfaces with a round corner. Carbide provides good wear resistance and maintains sharp edges longer than high-speed steel (HSS). In most applications, burs should be operated within the recommended cutting speed range, expressed in surface feet per minute (SFPM).
Cutting burs, also called rotary files, are small rotary tools with many cutting edges that operate at very high speeds in order to remove material from a workpiece. The bur’s head contains the cutting edges, and the bur’s shank is inserted like a drill bit into a toolholder such as a drill chuck or collet. Burs are versatile tools that are offered in many shapes, sizes, and end types, and they are used in a wide range of industries, including tool, die, and mold manufacturing; metal fabrication; and dentistry. Burs can be used for deburring, or removing small protrusions (burrs) that form on the surface of a workpiece as a result of a machining process. They can also be used for welding preparation, finishing welded joints, chamfering, surface cleaning and finishing, grinding down rough edges, and contouring. A bur’s compact size gives the operator control over contact between the bur and the workpiece, making the tool well suited for delicate operations. Finishes or coatings may be applied to the head of the tool to improve wear resistance, decrease friction, and protect against high temperatures.
Pferd, Inc., manufactures abrasives and cutting tools for grinding, finishing, and cutting. Founded in 1799, Pferd has its U.S. headquarters in Leominster, MA. Pferd meets International Organization for Standardization (ISO) 9001 standards.