{"product_id":"weiler-94697-knotted-cup-brush-3-5-in-stainless-steel","title":"Weiler 94697 Knotted Cup Brush 3.5 in Stainless Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WEILER 94697 is a knotted cup brush designed for aggressive surface preparation, weld cleaning, and rust or scale removal on metal surfaces. Built with stainless steel wire at 0.023 inches in diameter, it delivers consistent cut and durability on stainless steel workpieces where carbon steel contamination must be avoided. The brush measures 3.5 inches in diameter with a single-row knotted fill pattern and is rated to a maximum of 13,300 RPM. It mounts via a 5\/8-11 threaded arbor, making it compatible with standard angle grinders used by HVAC, plumbing, and general mechanical trades for surface conditioning and joint prep work.\u003c\/p\u003e\u003cp\u003eThis cup brush is suited for use in residential and commercial maintenance, fabrication shops, and field service environments. Typical applications include cleaning pipe ends before welding or brazing, removing oxidation from metal surfaces, and preparing joints on stainless steel systems. The knotted wire configuration provides more aggressive action than crimped wire brushes, making it the correct choice for heavy scale, slag, and weld spatter removal. It installs on angle grinders or die grinders equipped with the appropriate threaded spindle.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKnotted stainless steel wire construction resists contamination on stainless steel and corrosion-resistant alloy surfaces\u003c\/li\u003e\n\u003cli\u003e0.023 inch wire diameter provides aggressive cutting action for heavy-duty surface prep\u003c\/li\u003e\n\u003cli\u003eRated to 13,300 RPM for use with standard angle grinders\u003c\/li\u003e\n\u003cli\u003e5\/8-11 threaded arbor for direct mounting without adapters on most angle grinders\u003c\/li\u003e\n\u003cli\u003eSingle-row cup configuration concentrates wire action for focused cleaning and weld prep\u003c\/li\u003e\n\u003cli\u003e7\/8 inch trim length maintains consistent wire tension and brush life throughout use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with angle grinders and right-angle die grinders equipped with a 5\/8-11 threaded spindle. Intended for surface preparation on stainless steel and similar corrosion-resistant metals where carbon steel wire contamination is not acceptable.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eLicensed or qualified tradespeople should ensure the grinder spindle speed does not exceed the 13,300 RPM rating of this brush before mounting. Always power down and disconnect the tool from its power source before installing or removing the brush. Wear appropriate PPE including eye and face protection, as wire bristles can shed at operating speed. Thread the brush fully onto the 5\/8-11 arbor and verify it is seated and secured before operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Diameter\u003c\/strong\u003e: 0.023 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrush Type\u003c\/strong\u003e: Knotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRow Count\u003c\/strong\u003e: Single Row\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: 13,300 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArbor Type\u003c\/strong\u003e: Threaded Arbor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArbor Hole Thread Size\u003c\/strong\u003e: 5\/8-11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 94697\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WEILER","offers":[{"title":"Default Title","offer_id":51542957097266,"sku":"94697","price":104.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/33a5e3658f511215d6a1e24cee32c7d2.jpg?v=1785912147","url":"https:\/\/voomisupply.com\/products\/weiler-94697-knotted-cup-brush-3-5-in-stainless-steel","provider":"Voomi Supply","version":"1.0","type":"link"}