Weiler 94695 Knotted Cup Brush 3.5 in Steel Wire

Product Description

The WEILER 94695 is a knotted steel wire cup brush designed for aggressive surface preparation on metal and weld areas. It mounts to angle grinders and right-angle die grinders via a 5/8-11 threaded arbor hole. The brush measures 3.5 inches in diameter with a 0.023-inch wire diameter and a 7/8-inch trim length. The knotted wire configuration delivers high cutting action, making it effective for rust removal, weld cleaning, mill scale removal, and paint stripping. Rated to a maximum of 13,300 RPM, it is built for sustained use in shop and field applications where power tool cleaning is required.

This cup brush is suited for use on structural steel, pipe, plate, and fabricated components ahead of welding, coating, or inspection. It is commonly used by welders, pipefitters, ironworkers, and maintenance technicians working on carbon steel and other ferrous surfaces. The single-row knotted construction concentrates wire contact at the work surface, improving cut rate in confined or contoured areas where flat wire wheels are less effective.

Key Features

• 3.5-inch diameter knotted steel wire cup brush for angle grinders
• 0.023-inch wire diameter provides aggressive cutting action
• 5/8-11 threaded arbor for direct mounting to standard angle grinders
• 7/8-inch trim length for stiffness and controlled wire deflection
• Maximum rated speed of 13,300 RPM
• Single-row construction concentrates contact force at the work surface

Compatibility

Designed for use with angle grinders and right-angle grinders equipped with a 5/8-11 threaded spindle. Suitable for ferrous metal surface preparation applications.

Installation Notes

Installation should be performed by qualified personnel following the grinder and accessory manufacturer instructions. Always disconnect power before mounting or removing the brush. Confirm the tool RPM rating meets or exceeds the brush maximum RPM before operation. Appropriate PPE including face shield, gloves, and hearing protection is required during use per ANSI B11 and applicable shop safety standards.