Brush Research Mfg. BNH2612 Cup Brush 2-3/4 in Carbon Steel

Product Description

The BRUSH RESEARCH MFG. BNH2612 is a crimped-wire cup brush designed for surface preparation, weld cleaning, rust removal, and deburring on metal workpieces. The brush features a 2-3/4 inch diameter carbon steel fill with a 1/4 inch shank arbor, making it compatible with standard handheld drills and die grinders. With a maximum operating speed of 8,000 RPM and a 3/4 inch trim length, it delivers consistent contact pressure across irregular surfaces. Carbon steel wire construction handles general-purpose metalwork where tougher stainless fill is not required. Fabricators, welders, pipefitters, and maintenance technicians rely on this type of brush for both prep and finish work.

This cup brush is suited for use in fabrication shops, maintenance facilities, and field service applications. The crimped wire configuration provides a more flexible, blending action compared to knotted-style brushes, making it appropriate for moderate surface conditioning tasks rather than aggressive material removal. The 1/4 inch shank fits directly into standard drill chucks and collet-style die grinder attachments without an adapter. It is typically used on mild steel, cast iron, and similar ferrous substrates.

Key Features

• 2-3/4 inch brush diameter for broad surface contact
• Crimped carbon steel wire fill for flexible, controlled surface action
• 1/4 inch shank arbor fits standard drills and die grinders
• 8,000 RPM maximum operating speed
• 3/4 inch trim length maintains consistent wire engagement

Compatibility

Designed as a replacement-style cup brush for use with handheld electric drills and pneumatic or electric die grinders accepting a 1/4 inch shank.

Installation Notes

Always verify that the tool's rated RPM does not exceed the brush's 8,000 RPM maximum before mounting. Secure the shank firmly in the drill chuck or collet and confirm the fastener is fully tightened before operation. Wear ANSI-rated eye protection and appropriate gloves when operating wire brushes, as wire fragments can become projectiles. Do not apply excessive lateral force against the brush face - allow wire contact pressure to do the work.