{"product_id":"3m-7100100960-fibre-disc-787c-4-inch-80-grit","title":"3M 7100100960 Fibre Disc 787C 4 Inch 80 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe 3M 7100100960 is a 4-inch coated fibre disc in the 787C series, designed for high-speed grinding and finishing on hard-to-grind metals. Built around 3M Precision Shaped Grain, it delivers a faster cut rate and cooler running temperatures than conventional fibre discs. A built-in grinding aid further reduces heat buildup, making this disc a reliable choice for stainless steel and high nickel alloy work. The Roloc quick-change attachment locks the disc securely to a compatible backup pad without tools, reducing changeover time. Licensed HVAC, fabrication, and metalworking professionals will find this disc well-suited to heavy-duty weld removal and surface preparation tasks.\u003c\/p\u003e\u003cp\u003eThis disc is primarily used in metal fabrication, welding shops, and maintenance environments where stainless steel or high nickel alloys require aggressive stock removal, weld grinding, beveling, edge chamfering, or finish blending. At 80 grit, it sits in the medium-to-coarse range, appropriate for initial weld removal and blending before transitioning to finer finishing steps. The 12000 RPM maximum speed rating supports use with standard angle grinders and die grinders equipped with a Roloc-compatible backup pad.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3M Precision Shaped Grain provides higher cut rates and cooler grinding versus conventional abrasive grains\u003c\/li\u003e\n\u003cli\u003eGrinding aid reduces heat buildup, protecting heat-sensitive alloys like stainless steel and high nickel grades\u003c\/li\u003e\n\u003cli\u003eStiff fibre backing and strong resin bond resist tearing during heavy-load applications\u003c\/li\u003e\n\u003cli\u003eRoloc quick-change attachment secures the disc without tools, enabling fast pad changes\u003c\/li\u003e\n\u003cli\u003eSuited for weld removal, beveling, edge chamfering, blending, and finish refinement\u003c\/li\u003e\n\u003cli\u003e80 grit rating balances aggressive stock removal with controlled surface finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Roloc-compatible backup pads on angle grinders and die grinders rated for a minimum of 12000 RPM. Optimized for stainless steel and high nickel alloy substrates.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and disc changes must be performed with the grinder powered off and unplugged or air supply disconnected. Verify the backup pad and grinder spindle speed meet or exceed the 12000 RPM disc rating before mounting. Wear appropriate PPE including eye protection and gloves when operating grinding equipment. Follow applicable ANSI B11 and OSHA 1910.215 guidelines for abrasive wheel machinery.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Speed\u003c\/strong\u003e: 12000 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttachment Type\u003c\/strong\u003e: Roloc quick-change\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Type\u003c\/strong\u003e: 3M Precision Shaped Grain with grinding aid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking\u003c\/strong\u003e: Stiff fibre with resin bond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 4.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 13.59 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 11.88 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 6.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 076308897111\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7100100960\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51344191619378,"sku":"7100100960","price":392.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310536084.jpg?v=1782031278","url":"https:\/\/voomisupply.com\/products\/3m-7100100960-fibre-disc-787c-4-inch-80-grit","provider":"Voomi Supply","version":"1.0","type":"link"}