Weiler 94850 Knotted Wire Wheel Brush 4 in 20000 Rpm

Product Description

The WEILER 94850 is a knotted wire wheel brush designed for aggressive surface preparation and weld cleaning on metal workpieces. The 4-inch diameter wheel uses standard-twist knotted carbon steel wire to deliver the high contact pressure needed to remove mill scale, rust, slag, and coatings. Rated to 20,000 RPM, it mounts via a 1/4-inch shank directly into a die grinder or similar rotary tool. Licensed tradespeople and fabricators working in HVAC, plumbing, mechanical, or general metalwork rely on this style of brush where angle grinder clearance is limited.

This wheel brush is suited for spot weld cleanup, pipe end preparation, and deburring in confined areas where a larger cup brush or angle grinder wheel cannot fit. The 1/4-inch shank mount makes it compatible with standard die grinders commonly found in HVAC and plumbing shops. It is sold as a single unit and is appropriate for both light production use and field service work on ferrous metals.

Key Features

• Knotted carbon steel wire delivers high-impact scrubbing force for rust, scale, and slag removal
• Standard-twist wire knot type maintains consistent aggressiveness across the brush face
• 20,000 RPM maximum speed rating compatible with most die grinders
• 1/4-inch diameter shank included — no separate arbor required
• 0.5-inch face width concentrates wire contact on narrow or detailed surfaces
• 7/8-inch trim length provides firm wire action with controlled deflection

Compatibility

Designed for use with die grinders and rotary tools accepting a 1/4-inch shank, rated to a minimum of 20,000 RPM. Intended for use on ferrous metal surfaces.

Installation Notes

Installation is performed by trade professionals or experienced users familiar with rotary abrasive tooling. Confirm the tool spindle speed does not exceed the 20,000 RPM maximum rating of the brush before operation. Always wear appropriate eye and face protection, as wire tips can break free during use. Power down and disconnect the tool before mounting or removing the brush.