Weiler 94657 Knotted Wheel Brush 4 Inch Stainless Steel

Product Description

The WEILER 94657 is a knotted wire wheel brush designed for aggressive surface preparation, weld cleaning, and deburring on metal workpieces. It mounts via a 3/8-24 threaded arbor hole, making it compatible with standard angle grinders and bench grinders that accept threaded spindle attachments. The brush features stainless steel stringer bead twist wire, which delivers consistent, high-impact scrubbing action without contaminating the base metal with carbon or iron deposits. Rated at 20,000 RPM, it handles demanding production environments and fits cleanly into fabrication, maintenance, and welding prep workflows. Metalworkers, fabricators, and maintenance technicians are the primary installers of this tool.

This wheel brush is suited for use on stainless steel, aluminum, and other metals where carbon steel wire would cause cross-contamination concerns. Typical applications include removal of mill scale, weld spatter, rust, and surface oxides in both shop and field settings. The 4-inch outside diameter and 3/16-inch face width make it appropriate for detail work on weld beads, pipe joints, and structural connections. It is sold individually and is commonly used in light fabrication shops, HVAC duct work finishing, plumbing fitting preparation, and structural steel maintenance.

Key Features

• Knotted stringer bead twist wire for aggressive, high-penetration surface action
• Stainless steel fill material prevents carbon contamination on sensitive base metals
• 3/8-24 threaded arbor mount fits standard angle grinder and bench grinder spindles
• 20,000 RPM maximum speed rating suits high-speed grinder applications
• 4-inch wheel diameter with 3/16-inch face width for focused, controlled brushing
• 7/8-inch trim length provides consistent wire projection and brush life

Compatibility

Designed for use with angle grinders and bench grinders equipped with a 3/8-24 threaded spindle. No shank is included with this brush.

Installation Notes

Always power down and disconnect the grinder from its power source before mounting or removing the wheel brush. Verify that the tool spindle speed rating meets or exceeds the 20,000 RPM maximum listed on this brush before operation. Eye protection, face shield, and appropriate gloves are required during use per general abrasive tool safety practices. Do not exceed the rated RPM, and inspect the brush for wire fatigue or damage before each use.