{"product_id":"norton-66623340021-quick-change-disc-3-4-in-tr-aluminum-oxide","title":"Norton 66623340021 Quick-change Disc 3\/4 in Tr Aluminum Oxide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NORTON 66623340021 is a quick-change abrasive disc from the Bear-Tex Rapid Prep series, designed for surface preparation, blending, and finishing on metal and composite materials. It measures 3\/4 inches in diameter and uses a TR (Type III) attachment system with a Type R backing for fast tool-free disc changes. The aluminum oxide abrasive grain is bonded to a flexible polyester and nylon web backing, rated for up to 40000 RPM. Coarse grit (50) makes it suitable for moderate material removal and surface conditioning. Licensed HVAC technicians, machinists, and metal fabricators will recognize this disc as a compact, high-speed option for tight-access surface work.\u003c\/p\u003e\u003cp\u003eThe 66623340021 is built for use with die grinders and handheld disc sanders in both shop and field environments. Its flexible, high-loft nylon fiber construction and Clean Bond resin technology allow it to work across a wide range of base materials without loading or smearing the workpiece surface. Compatible materials include 300 and 400 series stainless steel, brass, bronze, cast iron, copper, ductile iron, fiberglass and composites, gray iron, hard and soft carbon steels, super alloys, titanium, and tool steels. Sold individually with a minimum order quantity of 50 units.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTR (Type III) quick-change attachment with Type R backing for rapid disc swaps\u003c\/li\u003e\n\u003cli\u003eAluminum oxide abrasive grain rated for higher cut rate and consistent performance\u003c\/li\u003e\n\u003cli\u003eHigh-loft nylon fiber construction extends disc service life\u003c\/li\u003e\n\u003cli\u003eClean Bond resin technology delivers smear-free finishes on sensitive alloys\u003c\/li\u003e\n\u003cli\u003eFlexible polyester and nylon web backing conforms to irregular and contoured surfaces\u003c\/li\u003e\n\u003cli\u003eCoarse grit (50) supports moderate material removal across a broad material range\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with die grinders and handheld disc sanders that accept TR (Type III) quick-change attachments with a Type R interface. Compatible base materials include 300 Series Stainless, 400 Series Stainless, Brass, Bronze, Cast Iron, Copper, Ductile Iron, Fiberglass\/Composites, Gray Iron, Hard Carbon Steels, Soft Carbon Steels, Super Alloys, Titanium, and Tool Steels.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by metal fabricators, machinists, or maintenance technicians using a compatible TR (Type III) quick-change die grinder or handheld disc sander. Confirm the tool spindle speed rating meets or exceeds the disc maximum RPM before mounting. Inspect the disc for damage before each use and discard any disc that shows tears, delamination, or core damage. Always wear appropriate PPE including eye protection and gloves when operating abrasive discs at high speed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Bear-Tex Rapid Prep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Type\u003c\/strong\u003e: Non-Woven\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 40000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking Material\u003c\/strong\u003e: Polyester and Nylon Web\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking Weight\u003c\/strong\u003e: Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexibility\u003c\/strong\u003e: Flexible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Color\u003c\/strong\u003e: Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButton Color\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Change Compatibility\u003c\/strong\u003e: TR (Type III)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttaching System\u003c\/strong\u003e: Type R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Compatibility\u003c\/strong\u003e: Die Grinder, Handheld Disc Sander\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.00143 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31191506\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NORTON\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66623340021\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51543106289970,"sku":"66623340021","price":77.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38055f3c4021f0ef2a357afcafbcdbaa.jpg?v=1785915622","url":"https:\/\/voomisupply.com\/products\/norton-66623340021-quick-change-disc-3-4-in-tr-aluminum-oxide","provider":"Voomi Supply","version":"1.0","type":"link"}