{"product_id":"norton-66252940605-surface-grinding-wheel-220-grit","title":"Norton 66252940605 Surface Grinding Wheel 220 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NORTON 66252940605 is a Type 1 surface grinding wheel engineered for precision material removal on soft carbon steels, tool steels, and super alloys. Built with aluminum oxide abrasive in a vitrified bond, this wheel delivers consistent cutting action and dimensional stability under load. At 220 grit with a Very Fine grade and Q hardness code, it is suited for fine finishing passes where surface finish quality matters. The 38A series designation indicates a semi-friable aluminum oxide grain that self-sharpens progressively during use. Licensed trade professionals and skilled machinists install and operate this wheel type.\u003c\/p\u003e\u003cp\u003eThis wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The 7-inch diameter and 1\/2-inch thickness fit standard machine spindle configurations common in tool and die shops, maintenance facilities, and precision machining environments. The 1-1\/4-inch arbor hole accommodates typical spindle sizes on bench and floor-standing grinding equipment. It performs well on applications requiring fine surface finish on hardened and unhardened ferrous materials including tool steels and super alloys.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e220 grit Very Fine grade aluminum oxide abrasive for finish grinding passes\u003c\/li\u003e\n\u003cli\u003eVitrified bond provides rigidity and form-holding during precision surface work\u003c\/li\u003e\n\u003cli\u003eSemi-friable grain structure promotes self-sharpening for consistent cut rate\u003c\/li\u003e\n\u003cli\u003eQ hardness rating suited for grinding softer and medium-hardness workpiece materials\u003c\/li\u003e\n\u003cli\u003eType 1 straight wheel profile with no recess for flat-face grinding applications\u003c\/li\u003e\n\u003cli\u003eRated to 3600 RPM maximum operating speed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for material applications including soft carbon steels, tool steels, and super alloys per manufacturer specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eGrinding wheel installation must be performed by a qualified operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder before changing wheels. Never exceed the maximum rated RPM of 3600; verify the machine spindle speed before operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 38A Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1 Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBond Type\u003c\/strong\u003e: Vitrified\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: Q\u003c\/li\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: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Size\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 3600\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: White\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\u003eMaterial Application\u003c\/strong\u003e: Soft Carbon Steels, Tool Steels, Super Alloys\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.5 pounds\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: 66252940605\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51543474995506,"sku":"66252940605","price":136.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74de8d7c45680c3c1323ec1625e97fd1.jpg?v=1785919202","url":"https:\/\/voomisupply.com\/products\/norton-66252940605-surface-grinding-wheel-220-grit","provider":"Voomi Supply","version":"1.0","type":"link"}