Weiler 17689 Knotted Wheel Brush 4 Inch 0.25 Inch Shank

Product Description

The WEILER 17689 is a knotted carbon steel wheel brush designed for aggressive surface preparation and weld cleaning on metal workpieces. The 4-inch outside diameter and standard twist knot construction deliver concentrated wire contact that cuts through rust, scale, and mill residue efficiently. With a maximum rated speed of 20,000 RPM and a 0.25-inch shank mount, this brush is built for use in die grinders, straight grinders, and drill presses where consistent material removal is required. Wire filament diameters fall in the 0.020 to 0.030-inch range, providing a balance of aggressiveness and wire longevity. Licensed trades and industrial machine operators rely on this style of brush for deburring, surface conditioning, and weld prep work.

The 17689 is suited for use in both manual and automated applications. Compatible machine types include die grinders, right angle die grinders, straight grinders, drill presses, drills, milling machines, automatic machines, and CNC machines. The 0.5-inch face width and 0.875-inch trim length concentrate wire action in a narrow contact zone, making it effective on seams, joints, and tight profiles. This brush is well matched to metalworking shops, fabrication facilities, and maintenance environments where power tool brush work is routine.

Key Features

• Knotted standard twist wire construction for aggressive stock removal and scale cleaning
• 4-inch outside diameter with 0.5-inch face width for focused contact area
• 0.25-inch shank included, no separate arbor required for compatible grinders and drills
• Maximum rated speed of 20,000 RPM suits high-speed die grinder operation
• Carbon steel fill material handles ferrous metal surfaces including weld spatter and rust
• Compatible with automatic and CNC machine applications in addition to handheld power tools

Compatibility

Designed for use with die grinders, right angle die grinders, straight grinders, drill presses, drills, milling machines, automatic machines, and CNC machines that accept a 0.25-inch shank attachment.

Installation Notes

Always verify the tool spindle speed rating does not exceed the 20,000 RPM maximum marked on this brush before mounting. Disconnect or de-energize the power tool and confirm the spindle is fully stopped before installing or removing the brush. Inspect the wire fill for broken or loose wires before each use and replace the brush if damage is found. Eye protection and appropriate PPE are required when operating any rotary wire brush per standard shop safety practice.