The Pferd double-cut carbide bur has a ball shape with a radius end and an uncoated (bright) finish, and is for use on cast iron, steel with a Rockwell Hardness of less than C60, stainless steel, titanium alloys, and nickel-based alloys. The standard double-cut type produces smaller chips and offers better operator control than a single-cut bur when used on recommended material. The bur has a ball shape with a radius end, also known as shape D, which is suitable for machining curved surfaces and for enlarging holes. Carbide provides good wear resistance and maintains sharp edges longer than high-speed steel (HSS). With no coating or surface treatment, uncoated carbide supports a range of general-purpose applications. 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 burs head contains the cutting edges, and the burs 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 burs 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 tempe
