{"product_id":"weiler-94631-knotted-wheel-brush-4-inch-carbon-steel","title":"Weiler 94631 Knotted Wheel Brush 4 Inch Carbon Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WEILER 94631 is a knotted wheel brush designed for aggressive surface preparation, deburring, and weld cleaning on metal workpieces. It mounts via a standard arbor hole and spins at up to 20,000 RPM, making it suitable for use with angle grinders and bench grinders in fabrication, maintenance, and industrial service environments. The 4-inch outside diameter and carbon steel knotted wire construction deliver consistent cutting action on rust, scale, and mill coatings. Standard twist wire knots provide durability under sustained load. At 0.43 pounds, the brush is lightweight enough for extended use without excessive tool fatigue.\u003c\/p\u003e\u003cp\u003eThis brush is used in metal fabrication shops, welding operations, and general maintenance applications where fast, aggressive surface conditioning is required. It is well-suited for removing weld spatter, corrosion, and surface oxides on structural steel, pipe, and plate. The arbor-hole mount makes it compatible with standard bench grinders and right-angle grinders equipped with a matching arbor. No shank is included, so the correct arbor adapter must be confirmed before installation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKnotted carbon steel wire for aggressive material removal and long service life\u003c\/li\u003e\n\u003cli\u003eStandard twist wire knot type for consistent cutting performance\u003c\/li\u003e\n\u003cli\u003e20,000 RPM maximum speed rating for high-speed grinder use\u003c\/li\u003e\n\u003cli\u003e4-inch outside diameter with 1\/2-inch face width for focused contact area\u003c\/li\u003e\n\u003cli\u003eArbor hole mount — no shank included, fits standard arbor adapters\u003c\/li\u003e\n\u003cli\u003e7\/8-inch trim length provides controlled wire flex and contact pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with bench grinders and angle grinders that accept an arbor-hole mounted wheel brush with a 4-inch outside diameter operating within the 20,000 RPM speed rating.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified operator familiar with abrasive wheel safety. Power down and disconnect the grinder from its power source before mounting or removing the brush. Confirm the tool's rated RPM meets or exceeds the brush's 20,000 RPM maximum before operation. Always use the appropriate arbor adapter and flanges, and verify secure seating before running the tool. Eye protection and appropriate PPE are required during use per standard shop safety practice.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFace Width\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrim Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 20,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Type\u003c\/strong\u003e: Knotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Knot Type\u003c\/strong\u003e: Standard Twist\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilament Wire Diameter Range\u003c\/strong\u003e: 0.0100 to 0.0199 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill Material\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Arbor Hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Included\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.43 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31191521\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: WEILER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 94631\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WEILER","offers":[{"title":"Default Title","offer_id":51540683981106,"sku":"94631","price":37.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c97e5eeba887436b01319f06bc316ac3.jpg?v=1785861851","url":"https:\/\/voomisupply.com\/products\/weiler-94631-knotted-wheel-brush-4-inch-carbon-steel","provider":"Voomi Supply","version":"1.0","type":"link"}