Weiler 14414 Cup Brush 3.5 in Nylon Crimped 120 Grit 12000 Rpm

Product Description

The WEILER 14414 is a crimped nylon cup brush designed for surface preparation, cleaning, and finishing work on metal and other substrates. The brush measures 3.5 inches in diameter with a 1.5-inch trim length and mounts via a 5/8-11 threaded arbor, making it compatible with standard right-angle grinders. Fill material is nylon impregnated with 120-grit silicon carbide abrasive, rated medium grade, and the assembly is rated for a maximum of 12,000 RPM. Licensed tradespeople and maintenance technicians use this brush for deburring, surface blending, and controlled material removal without the aggressiveness of wire-fill alternatives.

This cup brush suits industrial maintenance, fabrication, and surface prep applications in commercial and light industrial settings. The nylon fill with silicon carbide abrasive delivers consistent scratch patterns and controlled cut rates on steel, aluminum, and composite surfaces. The 5/8-11 threaded arbor fits the majority of 4-inch and 4.5-inch angle grinders used in HVAC, plumbing, and general mechanical trade work. It is sold individually and is intended as a direct replacement or consumable replenishment for ongoing job-site use.

Key Features

• 3.5-inch brush diameter with 1.5-inch trim length for stable cup-style contact
• Nylon fill with 120-grit silicon carbide abrasive — medium grade for controlled surface work
• Crimped wire configuration maintains consistent pressure across uneven surfaces
• 5/8-11 threaded arbor fits standard angle grinder spindles
• 12,000 RPM maximum rating suits most right-angle grinder applications
• Gray color coding for quick visual identification of fill type and grade

Compatibility

Designed for use with angle grinders and die grinders equipped with a 5/8-11 threaded spindle arbor. Suitable as a consumable replacement in any application requiring a medium-grade nylon crimped cup brush at this diameter.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive tool safety. Power down and disconnect the grinder from its power source before mounting or removing the brush. Thread the brush onto the 5/8-11 arbor firmly by hand, then verify it is seated securely before operation. Always confirm the tool's rated RPM meets or exceeds the 12,000 RPM maximum stamped on the brush, and wear appropriate eye and face protection per ANSI B7.1 guidelines during use.