Weiler 94633 Knotted Wheel Brush 4 in Stainless Steel

Product Description

The WEILER 94633 is a knotted wheel brush designed for aggressive surface preparation and weld cleaning on metal workpieces. Measuring 4 inches in outside diameter with a 1/2-inch face width, it mounts via an arbor hole and spins at a rated maximum of 20,000 RPM. The fill material is stainless steel wire in a standard twist knot configuration, with a filament diameter in the 0.0100 to 0.0199-inch range and a trim length of 7/8 inch. This brush is suited for fabricators, welders, pipefitters, and maintenance technicians who need a reliable wire wheel for fast, consistent metal surface work.

This brush is used on angle grinders and bench grinders equipped with a compatible arbor in industrial, fabrication shop, and field maintenance settings. Typical applications include weld spatter removal, rust and scale stripping, and surface conditioning on steel and stainless steel substrates. The knotted wire construction delivers more aggressive cutting action than crimped wire, making it the preferred choice for heavy-duty deburring and weld prep tasks. No shank is included, so a separate arbor nut or adapter is required for installation.

Key Features

• 4-inch outside diameter with 1/2-inch face width for focused surface contact
• Knotted stainless steel wire in standard twist configuration for aggressive material removal
• Rated to 20,000 RPM maximum for compatibility with high-speed angle grinders
• Arbor hole mount requires no shank — pairs with standard bench or angle grinder arbor hardware
• 7/8-inch trim length provides consistent wire extension and controlled brush action
• Filament wire diameter in the 0.0100 to 0.0199-inch range balances aggression and wire longevity

Compatibility

Designed for use with angle grinders and bench grinders that accept an arbor hole mounted wheel brush. Verify spindle arbor size and thread before installation. No shank is included.

Installation Notes

Installation should be performed by qualified fabricators or maintenance technicians familiar with abrasive wheel safety. Always power down and unplug or lock out the grinder before mounting or removing the brush. Confirm the tool's rated RPM meets or exceeds 20,000 RPM and that the arbor hardware is properly torqued per the grinder manufacturer's specifications. Always wear appropriate eye and face protection when operating wire wheel brushes, and inspect the brush for wire fatigue or damage before each use.