Wire end brushes are power brushes with metal filaments that can reach small, tight, and hard-to-reach spaces. They’re great for cleaning, blending, polishing, deburring, and surface finishing recessed areas. Applications for these power-driven brushing tools include cleaning parts, polishing dies, and removing carbon deposits from cylinder heads and valve seats.

For brush buyers and users, choosing the right type of wire end brush means asking and answering a series of questions. Which filament material do you need? Do you need a tool with a standard or banded body, or a brush with a protective coated cup instead? You’ll also need to choose solid wires or knotted wires, or select a circular flared brush.

Wires and End Styles

Most wire end brushes have carbon steel or stainless steel filaments. These brushing tools are specified by wire size, tool diameter, and three different end styles.

• Standard ends are recommended for general-purpose use.
• Banded ends have shorter trim lengths and produce less flare.
• Coated cups protect the workpiece from contact with the tool’s metal body.

Importantly, wire end brushes can have either solid wires or knotted wires. Brush Research Manufacturing (BRM) supplies circular flared brushes, too.

Solid Wire End Brushes

BRM’s solid wire end brushes are recommended for less aggressive applications. They come in four wire sizes (.006”, .0104”, .014”, and .02”), three tool diameters (1/2", 3/4", and 1"), and three end styles.

• Standard ends can be used with hand-held grinders, or with CNC equipment.
• Banded ends provide greater brush control at the filament tips for cleaning and blending.
• Protective coated cups won’t mar or scratch adjoining surfaces.   

Knotted Wire End Brushes

BRM’s knotted wire end brushes are recommended for more aggressive applications. They come in two wire sizes (0.14” and 002”), two tool diameters, (3/4” and 1-1/8”), and three end styles.

• Standard ends are used for removing carbon from heads and in porting applications.
• Banded ends combine extra aggressiveness with less flare and more precise control.
• Coated cups are great for deep-well applications with heavier deposits.   

Circular Flared Brushes

Circular flared end brushes provide side cutting action and won’t score the bottoms of blind holes. They’re also used for removing rust and paint, cleaning welds and molds, spot facing, polishing, and deburring.

These BRM power brushes can be used with a drill press, come in a variety of wire sizes, and are available in six tool diameters:  1”, 1-1/4”, 1-1/2”, 2-3/4”, 3”, or 4”. 

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Now that you understand the basics of end brushes, find what you need in the BRM Product Catalog. There’s also ordering information about BRM's many other products, including Flex-Hone® tools and NamPower technology.