21073 - 3/8 Inch Steel Power Tube Brush

Precision Internal Deburring and Cleaning

The Weiler 21073 3/8" Power Tube Brush is an industrial-grade abrasive tool engineered for the specific challenges of internal diameter cleaning and deburring. Designed with a single continuous length of stainless steel stem wire, this brush offers superior structural integrity compared to standard multi-piece constructions. The stem supports a single spiral of crimped steel wire fill, measuring .004" in diameter. This fine wire gauge, combined with the crimped configuration, provides a flexible brushing action that conforms to surface irregularities without gouging the workpiece, making it highly effective for finishing operations where dimensional tolerance is critical.

This tool is particularly optimized for addressing smooth or threaded blind holes, a common geometry in machined parts that is notoriously difficult to clean. The 1/8" stem diameter ensures compatibility with a wide array of power sources, including CNC machining centers, automatic milling machines, drill presses, and standard hand drills. With a maximum operating speed of 2000 RPM, the brush delivers consistent kinetic energy to remove burrs, chips, and fines from internal cavities effectively.

In manufacturing environments such as aerospace, automotive, and general fabrication, the Weiler 21073 serves as a critical component in the finishing process. It is rated for use on a diverse range of materials including steel, cast iron, and high-nickel alloys. The use of a stainless steel stem prevents cross-contamination and oxidation within the bore, even though the fill material is carbon steel. This attention to detail in construction ensures longevity and reliable performance in high-volume production settings.

Operators looking for a reliable solution for cross-hole deburring or cleaning out tapped holes will find the dimensional accuracy of this 3/8" brush ensures complete coverage of the internal surface area. The 1-inch brush length provides ample contact area, while the 3-1/2 inch overall length allows for reach into deeper recesses. This product represents Weiler's commitment to high-performance surface conditioning solutions.