Weiler 94640 Knotted Wheel Brush 4 Inch Stainless Steel

Product Description

The WEILER 94640 is a knotted stainless steel wheel brush designed for aggressive surface preparation, weld cleaning, and deburring on metal workpieces. The 4-inch outside diameter and standard twist knot wire configuration deliver consistent scrubbing force and penetration into irregular surfaces. Rated to 20,000 RPM, this brush mounts via a 5/8-11 threaded arbor and is compatible with angle grinders and bench grinders that accept threaded-hub accessories. The 0.5-pound brush is a standard shop and field tool for metal fabricators, pipefitters, welders, and maintenance technicians who need reliable surface prep without the risk of contamination from carbon steel wire on stainless or alloy substrates.

This wheel brush is suited for use in fabrication shops, welding operations, and mechanical maintenance environments where stainless steel wire is required to avoid cross-contamination. Typical applications include cleaning weld beads, removing mill scale, descaling pipe joints, and prepping metal surfaces before coating or inspection. The 1/2-inch face width and 7/8-inch trim length focus contact pressure for effective action on narrow grooves, pipe seams, and flat stock. Professionals working on stainless steel, aluminum, or other corrosion-sensitive alloys will find the stainless fill material appropriate for code-sensitive work.

Key Features

• Knotted standard twist wire for aggressive cutting action and surface penetration
• Stainless steel fill material prevents cross-contamination on alloy and corrosion-resistant substrates
• 20,000 RPM maximum speed rating for use with common angle grinders
• 5/8-11 threaded arbor mount for secure, tool-free installation on compatible grinders
• 4-inch outside diameter with 1/2-inch face width for focused surface contact
• 7/8-inch trim length delivers consistent wire deflection and brush life

Compatibility

Designed for use with angle grinders and bench grinders that accept a 5/8-11 threaded arbor connection. Verify the tool spindle thread and maximum RPM rating meet or exceed 20,000 RPM before mounting.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with abrasive accessory safety. Always power down and disconnect the grinder before mounting or removing the brush. Confirm the grinder RPM rating matches or exceeds the 20,000 RPM maximum rating of this brush before operation. Eye protection, gloves, and a face shield are standard PPE when operating wire wheel brushes.