{"product_id":"norton-66623399007-ceramic-alumina-flap-disc-120-grit","title":"Norton 66623399007 Ceramic Alumina Flap Disc 120 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NORTON 66623399007 is a Type 27 ceramic alumina flap disc engineered for aggressive grinding and finishing on metal, stainless steel, and hard alloys. Built on a polyester backing, it runs at a rated maximum of 13,300 RPM and delivers fine-grade surface finishing in a single pass. The 7\/8-inch arbor-mount center hole fits standard right-angle grinders. Ceramic alumina abrasive cuts cooler and lasts longer than conventional aluminum oxide, reducing disc changes on heavy production work. The trimmable design allows the operator to expose fresh abrasive as the disc wears, extending usable life on contoured or uneven surfaces.\u003c\/p\u003e\u003cp\u003eThis disc is suited to fabrication shops, maintenance and repair operations, and field welding applications where operators need consistent stock removal alongside a controlled surface finish. At 4.5 inches in diameter with a fine 120 grit, it is well matched to deburring weld seams, blending surface transitions, and preparing metal for coating or inspection. The green polyester-backed construction handles heat and flex better than fiberglass-backed alternatives during prolonged contact grinding.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCeramic alumina abrasive for cool cutting and extended disc life\u003c\/li\u003e\n\u003cli\u003eType 27 flat profile for surface grinding and blending applications\u003c\/li\u003e\n\u003cli\u003e120 grit fine grade for finishing and pre-coat surface preparation\u003c\/li\u003e\n\u003cli\u003ePolyester backing provides flexibility and heat resistance during use\u003c\/li\u003e\n\u003cli\u003eTrimmable disc exposes fresh abrasive as the flaps wear down\u003c\/li\u003e\n\u003cli\u003eRated to 13,300 RPM for use on standard 4.5-inch right-angle grinders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use on 4.5-inch right-angle grinders equipped with a 7\/8-inch arbor attachment. Verify that the grinder free-speed rating does not exceed the 13,300 RPM disc maximum before mounting.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eDisc installation and replacement should be performed by trained personnel following the grinder manufacturer's guard and mounting requirements. Always confirm the grinder is unplugged or the battery removed before changing the disc. Inspect the disc for cracks, delamination, or damage before each use and discard any disc that shows signs of defect. ANSI B7.1 and applicable OSHA abrasive wheel standards govern safe use of bonded and coated abrasives in the workplace.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Hole Size\u003c\/strong\u003e: 7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlap Disc Type\u003c\/strong\u003e: Type 27\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Fine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Ceramic Alumina\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Type\u003c\/strong\u003e: Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking Material\u003c\/strong\u003e: Polyester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttachment Type\u003c\/strong\u003e: Arbor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 13,300\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrimmable\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Color\u003c\/strong\u003e: Green\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 5 inches x 5 inches x 8.3 inches\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: NORTON\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66623399007\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51542936518962,"sku":"66623399007","price":95.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2e8f4d3b6e9eebe59d375d2bfab9c98c.jpg?v=1785911577","url":"https:\/\/voomisupply.com\/products\/norton-66623399007-ceramic-alumina-flap-disc-120-grit","provider":"Voomi Supply","version":"1.0","type":"link"}