Weiler 90304 End Brush 3in Steel Crimped Wire 16000 Rpm

Product Description

The WEILER 90304 is a 3-inch diameter end brush designed for aggressive surface conditioning, deburring, and cleaning on metal and fabricated components. It is constructed with crimped steel wire filaments up to 0.010 inches in diameter, which deliver consistent contact pressure and a degree of flex that reduces wire breakage under load. The brush mounts via a 6 mm shank that is included and ready to chuck into a die grinder or rotary tool, with a rated maximum speed of 16,000 RPM. Flared wire construction improves coverage on contoured and hard-to-reach surfaces. This type of brush is a standard consumable in metal fabrication, welding prep, and maintenance shops.

End brushes in this size class are used for weld spatter removal, scale cleaning, surface prep before coating or inspection, and light deburring on drilled or machined edges. The 3-inch working diameter makes this brush suited to moderate work areas where a smaller pencil brush would require multiple passes. It is installed by trade welders, fabricators, pipefitters, and maintenance mechanics using air-powered or electric die grinders. The 6 mm shank is compatible with standard die grinder collets widely used in industrial and trade settings.

Key Features

• 3-inch brush diameter provides broad surface coverage for end-brush applications
• Crimped steel wire filaments up to 0.010 inches in diameter for flexible, consistent contact
• Flared wire construction improves access on contoured or irregular surfaces
• 6 mm shank included, ready for die grinder or rotary tool installation
• Rated to 16,000 RPM for use with standard pneumatic and electric die grinders
• Not bridled, encapsulated, or piloted, keeping the design simple and the weight low

Compatibility

Designed for use with die grinders and rotary tools equipped with a 6 mm collet. Verify that the tool's rated speed meets or exceeds the brush's 16,000 RPM maximum before installation.

Installation Notes

A licensed or qualified technician or experienced tradesperson should install and operate end brushes. Always confirm the tool's no-load RPM does not exceed the 16,000 RPM rating marked on this brush before mounting. Wear appropriate PPE including eye protection and gloves, as wire filaments can shed under load. Inspect the brush for damaged or flared wires beyond normal wear before each use and replace if the shank or fill shows signs of fatigue.