{"product_id":"merit-abrasives-69957399680-quick-change-disc-3-4-in-320-grit","title":"Merit Abrasives 69957399680 Quick-change Disc 3\/4 in 320 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MERIT ABRASIVES 69957399680 is a coated quick-change abrasive disc designed for use with Power-Lock Type R attachment systems. The disc measures 3\/4 inch in diameter and cuts with 320-grit aluminum oxide abrasive, placing it in the extra-fine grade range. Backed by rigid polyester with a Y-weight backing, it is built to hold its shape under high-speed rotation up to 40,000 RPM. The brown disc with black button is part of the R766 series. It is suited for fine finishing, light deburring, and surface prep work on metal and similar materials. Machinists, fabricators, and general metalworkers are the typical users.\u003c\/p\u003e\n\u003cp\u003eThis disc is used in applications requiring consistent fine finishing at high rotational speeds. The Type R quick-change attachment makes swapping discs fast without tools, which is common in production grinding and finishing setups. At 3\/4 inch diameter, it fits into tight areas and contoured surfaces where larger discs cannot reach. It is well-suited for use on angle grinders, die grinders, and rotary tools configured for Type R quick-change disc systems. Minimum order quantity is 100 units, with individual package quantity of 1 disc per pack.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e320 grit aluminum oxide abrasive for extra-fine surface finishing\u003c\/li\u003e\n  \u003cli\u003eType R Power-Lock quick-change attachment for tool-free disc swaps\u003c\/li\u003e\n  \u003cli\u003eRated to 40,000 RPM for high-speed rotary tool use\u003c\/li\u003e\n  \u003cli\u003eRigid polyester Y-weight backing for consistent disc geometry\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch diameter fits tight or contoured workspaces\u003c\/li\u003e\n  \u003cli\u003ePart of the R766 series coated abrasive line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Type R Power-Lock quick-change disc holders and mandrels on angle grinders, die grinders, and rotary tools rated at or above 40,000 RPM maximum speed.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by pressing the disc onto a compatible Type R quick-change mandrel until it locks into place. Before mounting or removing the disc, ensure the rotary tool is powered off and unplugged or has its power source disconnected. Always verify the tool's rated RPM meets or exceeds the disc's 40,000 RPM maximum before operation. Wear appropriate eye and hand protection when operating abrasive discs.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 320\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Extra Fine\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: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBacking Material\u003c\/strong\u003e: Polyester\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: Rigid\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 40,000\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAttaching System\u003c\/strong\u003e: Type R Power-Lock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R766\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\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.001 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MERIT ABRASIVES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 69957399680\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERIT","offers":[{"title":"Default Title","offer_id":51559963689266,"sku":"69957399680","price":3976.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c68055c3ee05e4cfd45b54cee7584fa6.jpg?v=1786444910","url":"https:\/\/voomisupply.com\/products\/merit-abrasives-69957399680-quick-change-disc-3-4-in-320-grit","provider":"Voomi Supply","version":"1.0","type":"link"}