{"product_id":"norton-66252939529-surface-grinding-wheel-220-grit-7in","title":"Norton 66252939529 Surface Grinding Wheel 220 Grit 7in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NORTON 66252939529 is a Type 1 surface grinding wheel engineered for precision stock removal and finish grinding on soft carbon steels, tool steels, and super alloys. Constructed from aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent cut rates and long service life across high-cycle applications. It measures 7 inches in diameter, 1\/4 inch thick, with a 1-1\/4 inch arbor hole. Rated at a maximum of 3600 RPM, this wheel operates at 220 grit with a medium hardness rating (Hardness Code L), placing it in the very fine grade category. It carries the 38A220-LV specification designation. Machinists, tool grinders, and surface grind operators typically specify this wheel for finish passes and close-tolerance work.\u003c\/p\u003e\n\u003cp\u003eThis wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The 220 grit very fine grade makes it well suited for finish grinding operations where surface finish quality is critical. The non-porous, vitrified bond structure holds the aluminum oxide abrasive firmly during wet or dry grinding passes, providing predictable wheel wear and minimal loading on softer ferrous workpiece materials including soft carbon steels, tool steels, and super alloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum oxide abrasive provides semi-friable cutting action suited to ferrous metals\u003c\/li\u003e\n  \u003cli\u003eVitrified bond maintains wheel form and delivers consistent stock removal\u003c\/li\u003e\n  \u003cli\u003e220 grit very fine grade for finish grinding and close-tolerance surface work\u003c\/li\u003e\n  \u003cli\u003eMedium hardness (Code L) balances wheel life against workpiece surface finish\u003c\/li\u003e\n  \u003cli\u003eNon-porous, non-tapered Type 1 straight wheel profile with no recess\u003c\/li\u003e\n  \u003cli\u003eWhite wheel color aids visual inspection for loading and glazing during use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Arbor hole size of 1-1\/4 inches is required for proper mounting.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eGrinding wheel installation must be performed by a qualified machinist or tool-room professional following ANSI B11.9 and applicable OSHA standards for abrasive wheel machinery. Before mounting, inspect the wheel for cracks using a ring test and verify that the machine spindle speed does not exceed the 3600 RPM maximum rating stamped on the wheel. Always use proper wheel flanges and a compressible blotter between the flange and the wheel face. Dress the wheel with an appropriate dressing tool after mounting and before the first grinding pass.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Diameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Thickness\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Size\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 220\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Very Fine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Code\u003c\/strong\u003e: L (Medium)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBond Type\u003c\/strong\u003e: Vitrified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries \/ Specification\u003c\/strong\u003e: 38A220-LV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 3600\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriability\u003c\/strong\u003e: Semi-Friable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePorous\u003c\/strong\u003e: Non-Porous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapered\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecess Type\u003c\/strong\u003e: No Recess\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Soft Carbon Steels, Tool Steels, Super Alloys\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.8 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23131503\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: NORTON\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66252939529\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51540287553842,"sku":"66252939529","price":135.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1bf207b38a1ea1fb462ccbbee2d4f692.jpg?v=1785851283","url":"https:\/\/voomisupply.com\/products\/norton-66252939529-surface-grinding-wheel-220-grit-7in","provider":"Voomi Supply","version":"1.0","type":"link"}