Norton 66252839032 Knotted Wire Wheel Brush 4 Inch

Product Description

The NORTON 66252839032 is a knotted carbon steel wire wheel brush designed for aggressive surface preparation and metal finishing applications. Built with a 4-inch outside diameter and a 1/4-inch shank for secure chuck mounting, this brush operates at speeds up to 25,000 RPM. The knotted wire configuration concentrates filament contact force, making it effective for removing rust, scale, weld spatter, and mill scale from metal surfaces. At a coarse grade with a 7/8-inch trim length and a 1/2-inch face width, it delivers fast stock removal in demanding shop and field conditions. Licensed trades and fabricators rely on this style of brush for prep work before welding, coating, or inspection.

This knotted wire wheel brush is suited for use in metal fabrication shops, maintenance and repair operations, and construction jobsites. It is compatible with standard die grinders and rotary tools accepting a 1/4-inch shank. Common applications include deburring, rust removal, surface conditioning, and weld joint cleanup on ferrous metals. The coarse carbon steel fill is appropriate for use on structural steel, pipe, and plate where aggressive cutting action is required.

Key Features

• Knotted wire construction provides concentrated contact pressure for fast material removal
• 4-inch outside diameter with 1/2-inch face width for broad surface coverage
• 1/4-inch shank included, compatible with standard die grinders and rotary tools
• Rated to 25,000 RPM maximum operating speed
• Carbon steel fill at coarse grade for aggressive rust, scale, and spatter removal
• 7/8-inch trim length and filament wire diameter in the 0.0100 to 0.0199-inch range

Compatibility

Designed for use with die grinders and rotary tools that accept a 1/4-inch shank. Verify that the tool speed rating meets or exceeds the maximum RPM of the accessory before use.

Installation Notes

Always confirm the tool's rated speed does not exceed the brush's 25,000 RPM maximum before mounting. Secure the 1/4-inch shank fully into the collet and tighten according to the tool manufacturer's torque guidance. Operators should wear appropriate PPE including face shield and heavy gloves, as wire filaments can break free during use. Inspect the brush for damaged or missing wires before each use and remove from service if deformation is observed.