{"product_id":"3m-7010309470-quick-change-disc-400-grit-diamond-3-in","title":"3M 7010309470 Quick-change Disc 400 Grit Diamond 3 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe 3M 7010309470 is a quick-change abrasive disc designed for high-speed surface finishing, blending, and material removal tasks. Part of the 3M 6234J Series, it uses a diamond abrasive material at 400 grit for fine finishing work on hard materials. The disc attaches via a Roloc TR Type R center-button system, allowing fast one-handed disc changes on compatible right-angle grinders and die grinders. Rated to 20,000 RPM, the flexible polyester backing conforms to contoured surfaces. At 3 inches in diameter and 0.17 pounds, it is compact enough for detail work in tight spaces. Licensed tradespeople in metalworking, fabrication, and maintenance fields are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis disc is suited for fine finishing and polishing passes on hard surfaces where conventional aluminum oxide or ceramic abrasives wear too quickly. The 400 grit diamond abrasive delivers consistent cut rate on glass, carbide, ceramics, stone, and hardened steel. The flexible polyester J-weight backing allows the disc to follow curved or irregular profiles without loading or glazing. Typical applications include edge blending, surface prep before coating, and finish work on hard tooling or precision components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e400 grit diamond abrasive for fine finishing on hard materials\u003c\/li\u003e\n  \u003cli\u003eRoloc TR Type R quick-change attachment for one-handed disc swaps\u003c\/li\u003e\n  \u003cli\u003eFlexible J-weight polyester backing conforms to contoured surfaces\u003c\/li\u003e\n  \u003cli\u003e20,000 RPM maximum speed rating for high-speed grinder use\u003c\/li\u003e\n  \u003cli\u003e3 inches diameter suits detail and close-quarters work\u003c\/li\u003e\n  \u003cli\u003e6234J Series construction with consistent grit distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with right-angle grinders and die grinders equipped with a Roloc TR Type R quick-change disc holder. The Type R attachment system is a standard interface found on a wide range of pneumatic and electric grinders used in metalworking and fabrication applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and disc changes should be performed with the grinder powered off and air supply disconnected or tool unplugged. Thread the Type R button into a compatible mandrel until seated, then verify the disc is secure before operating. Always confirm the tool RPM rating meets or exceeds the 20,000 RPM disc rating before use. Operators should wear appropriate eye protection and follow applicable workplace safety standards when using coated 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: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Diamond\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 400\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: M40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Type\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAttaching System\u003c\/strong\u003e: Type R (Roloc TR)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 6234J\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: J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexibility\u003c\/strong\u003e: Flexible\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 20,000\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: Yellow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.17 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 3M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7010309470\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51693216006450,"sku":"7010309470","price":61.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cf35de3bd60fdb5a9e8bc8be640bd34.jpg?v=1788309101","url":"https:\/\/voomisupply.com\/products\/3m-7010309470-quick-change-disc-400-grit-diamond-3-in","provider":"Voomi Supply","version":"1.0","type":"link"}