Weiler 26091 Cup Brush 0.5 in Straight Hair 37000 Rpm

Product Description

The WEILER 26091 is a miniature straight cup brush designed for detail cleaning, surface prep, and light deburring in tight or hard-to-reach areas. The brush features a 0.5-inch diameter fill of stiff black hair with a wire diameter of 0.003 inches, delivering consistent abrasive action without scoring delicate surfaces. A 3/32-inch shank arbor type allows it to mount directly into rotary tools, die grinders, and flex-shaft machines. Rated to a maximum of 37,000 RPM, it suits high-speed rotary applications. HVAC techs, plumbers, electricians, and general maintenance trades use this type of brush for connector cleaning, weld prep, and rust removal in confined spaces.

This cup brush is suited for use in residential and light commercial maintenance applications where a small-diameter rotary brush is needed. Its straight fill geometry keeps abrasive contact concentrated at the face of the brush, making it practical for spot cleaning, oxidation removal on fittings, and surface conditioning on small metal components. The 2-inch overall length and shank mount make it compatible with standard rotary tool chucks commonly found on the job site.

Key Features

• 0.5-inch brush diameter for detail and confined-space work
• Stiff hair fill with 0.003-inch wire diameter for controlled surface action
• Straight fill geometry concentrates abrasive contact at brush face
• 3/32-inch shank for use with rotary tools and die grinders
• 37,000 max RPM rating supports high-speed tool compatibility
• 7/32-inch trim length and 2-inch overall length for compact reach

Compatibility

Designed as an OEM-style replacement cup brush for use with rotary tools and die grinders accepting a 3/32-inch shank arbor.

Installation Notes

This brush is installed by trade professionals using standard rotary tools or die grinders with a compatible chuck size. Always verify the tool's maximum RPM rating meets or exceeds 37,000 RPM before mounting. Wear appropriate eye protection and secure guards per tool manufacturer instructions before operation. Do not exceed the brush's rated maximum RPM.